refactor(mir): Phase 139-P3-B - RoutingDecision を enum 対応 + レガシー削除

- RoutingDecision の missing_caps を Vec<CapabilityTag> に変更（型安全化）
- error_tags は to_tag() メソッドで自動生成
- 全 callsite を enum variant に修正
- capability_tags モジュール（文字列定数群）を完全削除
- 全テスト PASS（型安全性向上を確認）
- フォーマット適用

src/config/env.rs

@@ -26,11 +26,11 @@ pub mod stage1;
 // New modular organization
 mod joinir_flags;
 mod mir_flags;
-mod vm_backend_flags;
 mod parser_flags;
+mod selfhost_flags;
 mod using_flags;
 mod verification_flags;
-mod selfhost_flags;
+mod vm_backend_flags;
 
 pub use catalog::{env_vars, AppliesTo, EnvVarMeta};
 pub use dump::*;
@@ -42,11 +42,11 @@ pub use stage1::*;
 // Backward-compatible re-exports (NO BREAKING CHANGES!)
 pub use joinir_flags::*;
 pub use mir_flags::*;
-pub use vm_backend_flags::*;
 pub use parser_flags::*;
+pub use selfhost_flags::*;
 pub use using_flags::*;
 pub use verification_flags::*;
-pub use selfhost_flags::*;
+pub use vm_backend_flags::*;
 
 use std::collections::BTreeMap;
 

src/config/env/joinir_flags.rs

@@ -181,6 +181,5 @@ pub fn loopform_normalize() -> bool {
 ///
 /// For fine-grained control, use `joinir_debug_level()` which returns 0-3.
 pub fn is_joinir_debug() -> bool {
-    std::env::var("HAKO_JOINIR_DEBUG").is_ok()
-        || std::env::var("NYASH_JOINIR_DEBUG").is_ok()
+    std::env::var("HAKO_JOINIR_DEBUG").is_ok() || std::env::var("NYASH_JOINIR_DEBUG").is_ok()
 }

src/grammar/generated.rs

@@ -36,37 +36,15 @@ pub static OPERATORS_DIV_RULES: &[(&str, &str, &str, &str)] = &[
 ];
 pub fn lookup_keyword(word: &str) -> Option<&'static str> {
     for (k, t) in KEYWORDS {
-        if *k == word { return Some(*t); }
+        if *k == word {
+            return Some(*t);
+        }
     }
     None
 }
 
 pub static SYNTAX_ALLOWED_STATEMENTS: &[&str] = &[
-    "box",
-    "global",
-    "function",
-    "static",
-    "if",
-    "loop",
-    "break",
-    "return",
-    "print",
-    "nowait",
-    "include",
-    "local",
-    "outbox",
-    "try",
-    "throw",
-    "using",
-    "from",
-];
-pub static SYNTAX_ALLOWED_BINOPS: &[&str] = &[
-    "add",
-    "sub",
-    "mul",
-    "div",
-    "and",
-    "or",
-    "eq",
-    "ne",
+    "box", "global", "function", "static", "if", "loop", "break", "return", "print", "nowait",
+    "include", "local", "outbox", "try", "throw", "using", "from",
 ];
+pub static SYNTAX_ALLOWED_BINOPS: &[&str] = &["add", "sub", "mul", "div", "and", "or", "eq", "ne"];

src/mir/builder.rs

@@ -15,19 +15,19 @@ use crate::mir::region::function_slot_registry::FunctionSlotRegistry;
 use crate::mir::region::RegionId;
 use std::collections::HashSet;
 use std::collections::{BTreeMap, HashMap};
+mod binding_context; // Phase 136 follow-up (Step 4/7): BindingContext extraction
 mod builder_calls;
 mod call_resolution; // ChatGPT5 Pro: Type-safe call resolution utilities
 mod calls; // Call system modules (refactored from builder_calls)
-mod binding_context; // Phase 136 follow-up (Step 4/7): BindingContext extraction
 mod compilation_context; // Phase 136 follow-up (Step 7/7): CompilationContext extraction
 mod context; // BoxCompilationContext - 箱理論による静的Boxコンパイル時のコンテキスト分離
 mod core_context; // Phase 136 follow-up (Step 2/7): CoreContext extraction
-mod metadata_context; // Phase 136 follow-up (Step 6/7): MetadataContext extraction
-mod variable_context; // Phase 136 follow-up (Step 5/7): VariableContext extraction
 mod decls; // declarations lowering split
 mod exprs; // expression lowering split
 mod exprs_call;
-mod method_call_handlers; // Method call handler separation (Phase 3) // call(expr)
+mod metadata_context; // Phase 136 follow-up (Step 6/7): MetadataContext extraction
+mod method_call_handlers;
+mod variable_context; // Phase 136 follow-up (Step 5/7): VariableContext extraction // Method call handler separation (Phase 3) // call(expr)
                                                                                     // include lowering removed (using is handled in runner)
 mod control_flow; // thin wrappers to centralize control-flow entrypoints
 mod exprs_lambda; // lambda lowering
@@ -55,9 +55,9 @@ mod receiver; // ReceiverMaterializationBox（Method recv の pin+LocalSSA 集
 mod rewrite; // P1: Known rewrite & special consolidation
 mod router; // RouterPolicyBox（Unified vs BoxCall）
 mod schedule; // BlockScheduleBox（物理順序: PHI→materialize→body）
+mod scope_context; // Phase 136 follow-up (Step 3/7): ScopeContext extraction
 mod ssa; // LocalSSA helpers (in-block materialization)
 mod stmts;
-mod scope_context; // Phase 136 follow-up (Step 3/7): ScopeContext extraction
 mod type_context; // Phase 136 follow-up: TypeContext extraction
 mod type_facts; // Phase 136 follow-up: Type inference facts box
 pub(crate) mod type_registry;
@@ -86,8 +86,6 @@ pub struct MirBuilder {
     /// Direct field access for backward compatibility (migration in progress).
     pub(super) core_ctx: core_context::CoreContext,
 
-
-
     /// Phase 136 follow-up: Type information context
     /// Consolidates value_types, value_kinds, value_origin_newbox for better organization.
     /// Direct field access for backward compatibility (migration in progress).
@@ -125,7 +123,6 @@ pub struct MirBuilder {
     #[allow(dead_code)]
     pub(super) pending_phis: Vec<(BasicBlockId, ValueId, String)>,
 
-
     // Phase 2-5: binding_map removed - use binding_ctx.binding_map instead
 
     // include guards removed
@@ -153,7 +150,6 @@ pub struct MirBuilder {
     // ----------------------
     // Debug scope context (dev only; zero-cost when unused)
     // ----------------------
-
     /// Local SSA cache: ensure per-block materialization for critical operands (e.g., recv)
     /// Key: (bb, original ValueId, kind) -> local ValueId
     /// kind: 0=recv, 1+ reserved for future (args etc.)
@@ -196,7 +192,8 @@ impl MirBuilder {
         let core_ctx = core_context::CoreContext::new();
 
         // Phase 136 Step 7/7: Compilation context (new SSOT)
-        let comp_ctx = compilation_context::CompilationContext::with_plugin_sigs(plugin_method_sigs.clone());
+        let comp_ctx =
+            compilation_context::CompilationContext::with_plugin_sigs(plugin_method_sigs.clone());
 
         // フェーズM: no_phi_mode初期化削除
         #[allow(deprecated)]
@@ -384,7 +381,8 @@ impl MirBuilder {
                 if let (Some(dot), Some(slash)) = (name.rfind('.'), name.rfind('/')) {
                     if slash > dot {
                         let tail = &name[dot..];
-                        self.comp_ctx.method_tail_index
+                        self.comp_ctx
+                            .method_tail_index
                             .entry(tail.to_string())
                             .or_insert_with(Vec::new)
                             .push(name.clone());
@@ -399,7 +397,9 @@ impl MirBuilder {
 
     fn ensure_method_tail_index(&mut self) {
         let need_rebuild = match self.current_module {
-            Some(ref refmod) => self.comp_ctx.method_tail_index_source_len != refmod.functions.len(),
+            Some(ref refmod) => {
+                self.comp_ctx.method_tail_index_source_len != refmod.functions.len()
+            }
             None => self.comp_ctx.method_tail_index_source_len != 0,
         };
         if need_rebuild {
@@ -410,7 +410,8 @@ impl MirBuilder {
     pub(super) fn method_candidates(&mut self, method: &str, arity: usize) -> Vec<String> {
         self.ensure_method_tail_index();
         let tail = format!(".{}{}", method, format!("/{}", arity));
-        self.comp_ctx.method_tail_index
+        self.comp_ctx
+            .method_tail_index
             .get(&tail)
             .cloned()
             .unwrap_or_default()
@@ -418,7 +419,8 @@ impl MirBuilder {
 
     pub(super) fn method_candidates_tail<S: AsRef<str>>(&mut self, tail: S) -> Vec<String> {
         self.ensure_method_tail_index();
-        self.comp_ctx.method_tail_index
+        self.comp_ctx
+            .method_tail_index
             .get(tail.as_ref())
             .cloned()
             .unwrap_or_default()
@@ -527,7 +529,9 @@ impl MirBuilder {
         if !suggest.is_empty() {
             msg.push_str("\nHint: symbol appears in using module(s): ");
             msg.push_str(&suggest.join(", "));
-            msg.push_str("\nConsider adding 'using <module> [as Alias]' or check nyash.toml [using].");
+            msg.push_str(
+                "\nConsider adding 'using <module> [as Alias]' or check nyash.toml [using].",
+            );
         }
 
         msg
@@ -567,7 +571,9 @@ impl MirBuilder {
         // Result: VM would try to read undefined ValueIds (e.g., ValueId(270) at bb303).
         if !var_name.starts_with("__pin$") {
             // In SSA form, each assignment creates a new value
-            self.variable_ctx.variable_map.insert(var_name.clone(), value_id);
+            self.variable_ctx
+                .variable_map
+                .insert(var_name.clone(), value_id);
         }
 
         Ok(value_id)
@@ -582,7 +588,8 @@ impl MirBuilder {
 
         // Precompute debug metadata to avoid borrow conflicts later
         let _dbg_fn_name = self
-            .scope_ctx.current_function
+            .scope_ctx
+            .current_function
             .as_ref()
             .map(|f| f.signature.name.clone());
         let _dbg_region_id = self.debug_current_region_id();
@@ -694,7 +701,8 @@ impl MirBuilder {
                         }) = callee
                         {
                             let names: Vec<String> = self
-                                .variable_ctx.variable_map
+                                .variable_ctx
+                                .variable_map
                                 .iter()
                                 .filter(|(_, &vid)| vid == *r)
                                 .map(|(k, _)| k.clone())
@@ -760,7 +768,10 @@ impl MirBuilder {
                     );
                 }
                 // Phase 136 Step 6/7: Use metadata_ctx for span
-                block.add_instruction_with_span(instruction.clone(), self.metadata_ctx.current_span());
+                block.add_instruction_with_span(
+                    instruction.clone(),
+                    self.metadata_ctx.current_span(),
+                );
                 // Drop the mutable borrow of `block` before updating other blocks
             }
             // Update predecessor sets for branch/jump immediately so that
@@ -854,7 +865,8 @@ impl MirBuilder {
                 effects: EffectMask::PURE,
             })?;
             // 型注釈（最小）
-            self.type_ctx.value_types
+            self.type_ctx
+                .value_types
                 .insert(dst, super::MirType::Box(class.clone()));
             return Ok(dst);
         }
@@ -872,7 +884,9 @@ impl MirBuilder {
                     dst,
                     value: ConstValue::Integer(n),
                 })?;
-                self.type_ctx.value_types.insert(dst, super::MirType::Integer);
+                self.type_ctx
+                    .value_types
+                    .insert(dst, super::MirType::Integer);
                 return Ok(dst);
             }
         }
@@ -897,7 +911,8 @@ impl MirBuilder {
         })?;
         // Phase 15.5: Unified box type handling
         // All boxes (including former core boxes) are treated uniformly as Box types
-        self.type_ctx.value_types
+        self.type_ctx
+            .value_types
             .insert(dst, super::MirType::Box(class.clone()));
 
         // Record origin for optimization: dst was created by NewBox of class
@@ -954,7 +969,9 @@ impl MirBuilder {
 
     /// Check if the current basic block is terminated
     fn is_current_block_terminated(&self) -> bool {
-        if let (Some(block_id), Some(ref function)) = (self.current_block, &self.scope_ctx.current_function) {
+        if let (Some(block_id), Some(ref function)) =
+            (self.current_block, &self.scope_ctx.current_function)
+        {
             if let Some(block) = function.get_block(block_id) {
                 return block.is_terminated();
             }
@@ -1018,13 +1035,17 @@ use crate::mir::loop_pattern_detection::BindingMapProvider;
 
 impl BindingMapProvider for MirBuilder {
     #[cfg(feature = "normalized_dev")]
-    fn get_binding_map(&self) -> Option<&std::collections::BTreeMap<String, crate::mir::BindingId>> {
+    fn get_binding_map(
+        &self,
+    ) -> Option<&std::collections::BTreeMap<String, crate::mir::BindingId>> {
         // Phase 136 Step 4/7: Use binding_ctx (SSOT)
         Some(self.binding_ctx.binding_map())
     }
 
     #[cfg(not(feature = "normalized_dev"))]
-    fn get_binding_map(&self) -> Option<&std::collections::BTreeMap<String, crate::mir::BindingId>> {
+    fn get_binding_map(
+        &self,
+    ) -> Option<&std::collections::BTreeMap<String, crate::mir::BindingId>> {
         None
     }
 }

src/mir/builder/calls/annotation.rs

@@ -40,7 +40,8 @@ pub(in super::super) fn annotate_call_result_from_func_name<S: AsRef<str>>(
                     || std::env::var("NYASH_BUILDER_DEBUG").ok().as_deref() == Some("1")
                 {
                     let bx = builder
-                        .type_ctx.value_origin_newbox
+                        .type_ctx
+                        .value_origin_newbox
                         .get(&dst)
                         .cloned()
                         .unwrap_or_default();

src/mir/builder/calls/build.rs

@@ -21,7 +21,8 @@ impl MirBuilder {
         // Dev trace
         if std::env::var("NYASH_CLI_VERBOSE").ok().as_deref() == Some("1") {
             let cur_fun = self
-                .scope_ctx.current_function
+                .scope_ctx
+                .current_function
                 .as_ref()
                 .map(|f| f.signature.name.clone())
                 .unwrap_or_else(|| "<none>".to_string());
@@ -270,7 +271,8 @@ impl MirBuilder {
         if let Err(e) = self.emit_constructor_call(math_recv, "MathBox".to_string(), vec![]) {
             return Some(Err(e));
         }
-        self.type_ctx.value_origin_newbox
+        self.type_ctx
+            .value_origin_newbox
             .insert(math_recv, "MathBox".to_string());
         // birth()
         if let Err(e) = self.emit_method_call(None, math_recv, "birth".to_string(), vec![]) {

src/mir/builder/calls/lowering.rs

@@ -307,8 +307,12 @@ impl MirBuilder {
 
             // me
             let me_id = f.params[0];
-            self.variable_ctx.variable_map.insert("me".to_string(), me_id);
-            self.type_ctx.value_origin_newbox.insert(me_id, box_name.to_string());
+            self.variable_ctx
+                .variable_map
+                .insert("me".to_string(), me_id);
+            self.type_ctx
+                .value_origin_newbox
+                .insert(me_id, box_name.to_string());
             slot_regs.push(("me".to_string(), None));
 
             // 通常パラメータ

src/mir/builder/calls/unified_emitter.rs

@@ -208,7 +208,8 @@ impl UnifiedCallEmitterBox {
                                     crate::mir::MirType::Box(box_name.to_string()),
                                 );
                                 builder
-                                    .type_ctx.value_origin_newbox
+                                    .type_ctx
+                                    .value_origin_newbox
                                     .insert(singleton_id, box_name.to_string());
                                 // Cache for future use
                                 builder
@@ -296,7 +297,8 @@ impl UnifiedCallEmitterBox {
                     // Try to retrieve origin info for receiver
                     let recv_meta = receiver.and_then(|r| {
                         builder
-                            .type_ctx.value_origin_newbox
+                            .type_ctx
+                            .value_origin_newbox
                             .get(&r)
                             .cloned()
                             .map(|cls| (r, cls))

src/mir/builder/compilation_context.rs

@@ -394,7 +394,10 @@ mod tests {
         let base_id = ValueId::new(10);
 
         ctx.set_field_origin_class(base_id, "name".to_string(), "StringBox".to_string());
-        assert_eq!(ctx.get_field_origin_class(base_id, "name"), Some("StringBox"));
+        assert_eq!(
+            ctx.get_field_origin_class(base_id, "name"),
+            Some("StringBox")
+        );
         assert_eq!(ctx.get_field_origin_class(base_id, "other"), None);
     }
 

src/mir/builder/control_flow/joinir/merge/carrier_init_builder.rs

@@ -13,11 +13,10 @@
 /// - **SSOT**: Single function for all CarrierInit → ValueId generation
 /// - **Testability**: Pure function, easy to unit test
 /// - **Consistency**: Uniform debug output format
-
 use crate::mir::builder::MirBuilder;
 use crate::mir::join_ir::lowering::carrier_info::CarrierInit;
-use crate::mir::value_id::ValueId;
 use crate::mir::types::ConstValue;
+use crate::mir::value_id::ValueId;
 use crate::mir::MirInstruction;
 
 /// Generate a ValueId for the given CarrierInit policy
@@ -120,7 +119,13 @@ mod tests {
         let mut builder = MirBuilder::new();
         let host_id = ValueId(999); // Dummy host_id (not used for BoolConst)
 
-        let result = init_value(&mut builder, &CarrierInit::BoolConst(true), host_id, "test", false);
+        let result = init_value(
+            &mut builder,
+            &CarrierInit::BoolConst(true),
+            host_id,
+            "test",
+            false,
+        );
 
         assert_ne!(result, host_id, "BoolConst should emit new ValueId");
     }
@@ -131,7 +136,13 @@ mod tests {
         let mut builder = MirBuilder::new();
         let host_id = ValueId(999);
 
-        let result = init_value(&mut builder, &CarrierInit::BoolConst(false), host_id, "flag", false);
+        let result = init_value(
+            &mut builder,
+            &CarrierInit::BoolConst(false),
+            host_id,
+            "flag",
+            false,
+        );
 
         assert_ne!(result, host_id, "BoolConst should emit new ValueId");
     }
@@ -142,7 +153,13 @@ mod tests {
         let mut builder = MirBuilder::new();
         let host_id = ValueId(999);
 
-        let result = init_value(&mut builder, &CarrierInit::LoopLocalZero, host_id, "digit", false);
+        let result = init_value(
+            &mut builder,
+            &CarrierInit::LoopLocalZero,
+            host_id,
+            "digit",
+            false,
+        );
 
         assert_ne!(result, host_id, "LoopLocalZero should emit new ValueId");
     }
@@ -153,12 +170,36 @@ mod tests {
         let mut builder = MirBuilder::new();
         let host_id = ValueId(100);
 
-        let result1 = init_value(&mut builder, &CarrierInit::BoolConst(true), host_id, "flag1", false);
-        let result2 = init_value(&mut builder, &CarrierInit::BoolConst(false), host_id, "flag2", false);
-        let result3 = init_value(&mut builder, &CarrierInit::LoopLocalZero, host_id, "counter", false);
+        let result1 = init_value(
+            &mut builder,
+            &CarrierInit::BoolConst(true),
+            host_id,
+            "flag1",
+            false,
+        );
+        let result2 = init_value(
+            &mut builder,
+            &CarrierInit::BoolConst(false),
+            host_id,
+            "flag2",
+            false,
+        );
+        let result3 = init_value(
+            &mut builder,
+            &CarrierInit::LoopLocalZero,
+            host_id,
+            "counter",
+            false,
+        );
 
-        assert_ne!(result1, result2, "Different BoolConst calls should produce different ValueIds");
-        assert_ne!(result2, result3, "BoolConst and LoopLocalZero should produce different ValueIds");
+        assert_ne!(
+            result1, result2,
+            "Different BoolConst calls should produce different ValueIds"
+        );
+        assert_ne!(
+            result2, result3,
+            "BoolConst and LoopLocalZero should produce different ValueIds"
+        );
         assert_ne!(result1, result3, "All ValueIds should be unique");
     }
 
@@ -168,7 +209,13 @@ mod tests {
         let mut builder = MirBuilder::new();
         let host_id = ValueId(42);
 
-        let _ = init_value(&mut builder, &CarrierInit::FromHost, host_id, "debug_test", true);
+        let _ = init_value(
+            &mut builder,
+            &CarrierInit::FromHost,
+            host_id,
+            "debug_test",
+            true,
+        );
         // Expected stderr output: "[carrier_init_builder] 'debug_test': FromHost -> ValueId(42)"
         // (This test just verifies it doesn't crash)
     }
@@ -179,7 +226,13 @@ mod tests {
         let mut builder = MirBuilder::new();
         let host_id = ValueId(999);
 
-        let _result = init_value(&mut builder, &CarrierInit::BoolConst(true), host_id, "debug_bool", true);
+        let _result = init_value(
+            &mut builder,
+            &CarrierInit::BoolConst(true),
+            host_id,
+            "debug_bool",
+            true,
+        );
         // Expected stderr output: "[carrier_init_builder] 'debug_bool': BoolConst(true) -> ValueId(N)"
         // (This test just verifies it doesn't crash)
     }
@@ -190,7 +243,13 @@ mod tests {
         let mut builder = MirBuilder::new();
         let host_id = ValueId(999);
 
-        let _result = init_value(&mut builder, &CarrierInit::LoopLocalZero, host_id, "debug_zero", true);
+        let _result = init_value(
+            &mut builder,
+            &CarrierInit::LoopLocalZero,
+            host_id,
+            "debug_zero",
+            true,
+        );
         // Expected stderr output: "[carrier_init_builder] 'debug_zero': LoopLocalZero -> ValueId(N)"
         // (This test just verifies it doesn't crash)
     }

src/mir/builder/control_flow/joinir/merge/exit_line/reconnector.rs

@@ -143,7 +143,11 @@ impl ExitLineReconnector {
 
             // Update variable_ctx.variable_map with PHI dst
             if let Some(&phi_value) = phi_dst {
-                if let Some(var_vid) = builder.variable_ctx.variable_map.get_mut(&binding.carrier_name) {
+                if let Some(var_vid) = builder
+                    .variable_ctx
+                    .variable_map
+                    .get_mut(&binding.carrier_name)
+                {
                     // Phase 177-STRUCT: Always log for debugging
                     if verbose {
                         eprintln!(

src/mir/builder/control_flow/joinir/merge/instruction_rewriter.rs

@@ -149,7 +149,8 @@ pub(super) fn merge_and_rewrite(
 
             // Phase 195 FIX: Reuse existing block if present (preserves PHI from JoinIR Select lowering)
             // ultrathink "finalizer集約案": Don't overwrite blocks with BasicBlock::new()
-            let mut new_block = if let Some(ref mut current_func) = builder.scope_ctx.current_function {
+            let mut new_block =
+                if let Some(ref mut current_func) = builder.scope_ctx.current_function {
                     current_func
                         .blocks
                         .remove(&new_block_id)

src/mir/builder/control_flow/joinir/merge/loop_header_phi_builder.rs

@@ -96,12 +96,17 @@ impl LoopHeaderPhiBuilder {
         // Phase 131-11-H: Set PHI type from entry incoming (init value) only
         // Ignore backedge to avoid circular dependency in type inference
         if let Some(init_type) = builder.type_ctx.value_types.get(&loop_var_init).cloned() {
-            builder.type_ctx.value_types.insert(loop_var_phi_dst, init_type.clone());
+            builder
+                .type_ctx
+                .value_types
+                .insert(loop_var_phi_dst, init_type.clone());
 
             if debug || std::env::var("NYASH_CARRIER_PHI_DEBUG").ok().as_deref() == Some("1") {
                 eprintln!(
                     "[carrier/phi] Loop var '{}': dst=%{} entry_type={:?} (backedge ignored)",
-                    loop_var_name, loop_var_phi_dst.as_u32(), init_type
+                    loop_var_name,
+                    loop_var_phi_dst.as_u32(),
+                    init_type
                 );
             }
         }
@@ -128,13 +133,8 @@ impl LoopHeaderPhiBuilder {
         // Allocate PHIs for other carriers
         for (name, host_id, init, role) in carriers {
             // Phase 86: Use centralized CarrierInit builder
-            let init_value = super::carrier_init_builder::init_value(
-                builder,
-                &init,
-                *host_id,
-                &name,
-                debug,
-            );
+            let init_value =
+                super::carrier_init_builder::init_value(builder, &init, *host_id, &name, debug);
 
             let phi_dst = builder.next_value_id();
 
@@ -145,12 +145,17 @@ impl LoopHeaderPhiBuilder {
             // Phase 131-11-H: Set PHI type from entry incoming (init value) only
             // Ignore backedge to avoid circular dependency in type inference
             if let Some(init_type) = builder.type_ctx.value_types.get(&init_value).cloned() {
-                builder.type_ctx.value_types.insert(phi_dst, init_type.clone());
+                builder
+                    .type_ctx
+                    .value_types
+                    .insert(phi_dst, init_type.clone());
 
                 if debug || std::env::var("NYASH_CARRIER_PHI_DEBUG").ok().as_deref() == Some("1") {
                     eprintln!(
                         "[carrier/phi] Carrier '{}': dst=%{} entry_type={:?} (backedge ignored)",
-                        name, phi_dst.as_u32(), init_type
+                        name,
+                        phi_dst.as_u32(),
+                        init_type
                     );
                 }
             }
@@ -223,7 +228,8 @@ impl LoopHeaderPhiBuilder {
 
         // Get the header block from current function
         let current_func = builder
-            .scope_ctx.current_function
+            .scope_ctx
+            .current_function
             .as_mut()
             .ok_or("Phase 33-16: No current function when finalizing header PHIs")?;
 

src/mir/builder/control_flow/joinir/parity_checker.rs

@@ -141,20 +141,24 @@ mod tests {
 
     #[test]
     fn test_parity_check_skip_whitespace_match() {
-        use crate::mir::loop_canonicalizer::canonicalize_loop_expr;
         use crate::mir::builder::control_flow::joinir::patterns::ast_feature_extractor as ast_features;
+        use crate::mir::loop_canonicalizer::canonicalize_loop_expr;
 
         let loop_ast = build_skip_whitespace_loop();
 
         // Extract condition and body
         let (condition, body) = match &loop_ast {
-            ASTNode::Loop { condition, body, .. } => (condition.as_ref(), body.as_slice()),
+            ASTNode::Loop {
+                condition, body, ..
+            } => (condition.as_ref(), body.as_slice()),
             _ => panic!("Expected loop node"),
         };
 
         // Run canonicalizer
         let (_, canonical_decision) = canonicalize_loop_expr(&loop_ast).unwrap();
-        let canonical_pattern = canonical_decision.chosen.expect("Canonicalizer should succeed");
+        let canonical_pattern = canonical_decision
+            .chosen
+            .expect("Canonicalizer should succeed");
 
         // Run router's pattern detection
         let has_continue = ast_features::detect_continue_in_body(body);
@@ -175,13 +179,16 @@ mod tests {
             crate::mir::loop_pattern_detection::LoopPatternKind::Pattern2Break,
             "Router should classify as Pattern2Break for has_break=true"
         );
-        assert_eq!(canonical_pattern, actual_pattern, "Phase 137-5: Canonicalizer and router should agree (SSOT policy)");
+        assert_eq!(
+            canonical_pattern, actual_pattern,
+            "Phase 137-5: Canonicalizer and router should agree (SSOT policy)"
+        );
     }
 
     #[test]
     fn test_parity_check_match_simple_while() {
-        use crate::mir::loop_canonicalizer::canonicalize_loop_expr;
         use crate::mir::builder::control_flow::joinir::patterns::ast_feature_extractor as ast_features;
+        use crate::mir::loop_canonicalizer::canonicalize_loop_expr;
 
         // Simple while loop: no break, no continue, no if
         let loop_ast = ASTNode::Loop {
@@ -221,7 +228,9 @@ mod tests {
 
         // Extract condition and body
         let (condition, body) = match &loop_ast {
-            ASTNode::Loop { condition, body, .. } => (condition.as_ref(), body.as_slice()),
+            ASTNode::Loop {
+                condition, body, ..
+            } => (condition.as_ref(), body.as_slice()),
             _ => panic!("Expected loop node"),
         };
 
@@ -243,6 +252,9 @@ mod tests {
         // Canonicalizer should fail (not implemented yet for Pattern1)
         assert!(canonical_result.is_ok());
         let (_, decision) = canonical_result.unwrap();
-        assert!(decision.is_fail_fast(), "Canonicalizer should fail for simple patterns (Phase 3 only supports skip_whitespace)");
+        assert!(
+            decision.is_fail_fast(),
+            "Canonicalizer should fail for simple patterns (Phase 3 only supports skip_whitespace)"
+        );
     }
 }

src/mir/builder/control_flow/joinir/patterns/exit_binding.rs

@@ -106,7 +106,10 @@ impl<'a> ExitBindingBuilder<'a> {
     ///
     /// Success or error if boundary cannot be updated
     #[allow(dead_code)]
-    pub(crate) fn apply_to_boundary(&self, boundary: &mut JoinInlineBoundary) -> Result<(), String> {
+    pub(crate) fn apply_to_boundary(
+        &self,
+        boundary: &mut JoinInlineBoundary,
+    ) -> Result<(), String> {
         // Phase 222.5-C: Delegate to applicator module
         apply_exit_bindings_to_boundary(
             self.carrier_info,

src/mir/builder/control_flow/joinir/patterns/pattern1_minimal.rs

@@ -77,14 +77,17 @@ impl MirBuilder {
         //
         // Phase 132: Add exit_bindings to enable ExitLineReconnector
         // This ensures `return i` after loop returns the final value (3) instead of initial (0)
-        use crate::mir::join_ir::lowering::JoinInlineBoundaryBuilder;
-        use crate::mir::join_ir::lowering::inline_boundary::LoopExitBinding;
         use crate::mir::join_ir::lowering::carrier_info::CarrierRole;
+        use crate::mir::join_ir::lowering::inline_boundary::LoopExitBinding;
         use crate::mir::join_ir::lowering::join_value_space::PARAM_MIN;
+        use crate::mir::join_ir::lowering::JoinInlineBoundaryBuilder;
 
         // Phase 132-Post: Extract k_exit's parameter ValueId from join_module (Box-First)
         let k_exit_func = join_module.require_function("k_exit", "Pattern 1");
-        let join_exit_value = k_exit_func.params.first().copied()
+        let join_exit_value = k_exit_func
+            .params
+            .first()
+            .copied()
             .expect("k_exit must have parameter for exit value");
 
         // Phase 132: Create exit binding for loop variable

src/mir/builder/control_flow/joinir/patterns/pattern2_with_break.rs

@@ -9,8 +9,8 @@ use crate::mir::join_ir::lowering::join_value_space::JoinValueSpace;
 use crate::mir::join_ir::lowering::loop_body_local_env::LoopBodyLocalEnv;
 use crate::mir::join_ir::lowering::loop_scope_shape::LoopScopeShape;
 use crate::mir::join_ir::lowering::loop_update_analyzer::UpdateExpr;
-use crate::mir::loop_pattern_detection::function_scope_capture::CapturedEnv;
 use crate::mir::loop_pattern_detection::error_messages;
+use crate::mir::loop_pattern_detection::function_scope_capture::CapturedEnv;
 use crate::mir::ValueId;
 use std::collections::BTreeMap;
 
@@ -42,7 +42,9 @@ fn prepare_pattern2_inputs(
     verbose: bool,
 ) -> Result<Pattern2Inputs, String> {
     use super::condition_env_builder::ConditionEnvBuilder;
-    use crate::mir::loop_pattern_detection::function_scope_capture::{analyze_captured_vars_v2, CapturedEnv};
+    use crate::mir::loop_pattern_detection::function_scope_capture::{
+        analyze_captured_vars_v2, CapturedEnv,
+    };
 
     let loop_var_name = ctx.loop_var_name.clone();
     let loop_var_id = ctx.loop_var_id;
@@ -88,7 +90,10 @@ fn prepare_pattern2_inputs(
         log_pattern2(
             verbose,
             "capture",
-            format!("Phase 200-C: Captured {} variables", captured_env.vars.len()),
+            format!(
+                "Phase 200-C: Captured {} variables",
+                captured_env.vars.len()
+            ),
         );
         for var in &captured_env.vars {
             log_pattern2(
@@ -747,16 +752,8 @@ impl MirBuilder {
 
         trace::trace().varmap("pattern2_start", &self.variable_ctx.variable_map);
 
-        let mut inputs =
-            prepare_pattern2_inputs(self, condition, _body, fn_body, &ctx, verbose)?;
-        promote_and_prepare_carriers(
-            self,
-            condition,
-            _body,
-            &mut inputs,
-            debug,
-            verbose,
-        )?;
+        let mut inputs = prepare_pattern2_inputs(self, condition, _body, fn_body, &ctx, verbose)?;
+        promote_and_prepare_carriers(self, condition, _body, &mut inputs, debug, verbose)?;
         let (effective_break_condition, normalized_body) =
             apply_trim_and_normalize(self, condition, _body, &mut inputs, verbose)?;
         let analysis_body = normalized_body.as_deref().unwrap_or(_body);
@@ -977,11 +974,26 @@ mod tests {
         use crate::mir::ValueId;
 
         let mut builder = MirBuilder::new();
-        builder.variable_ctx.variable_map.insert("i".to_string(), ValueId(1));
-        builder.variable_ctx.variable_map.insert("len".to_string(), ValueId(2));
-        builder.variable_ctx.variable_map.insert("s".to_string(), ValueId(3));
-        builder.variable_ctx.variable_map.insert("digits".to_string(), ValueId(4));
-        builder.variable_ctx.variable_map.insert("result".to_string(), ValueId(5));
+        builder
+            .variable_ctx
+            .variable_map
+            .insert("i".to_string(), ValueId(1));
+        builder
+            .variable_ctx
+            .variable_map
+            .insert("len".to_string(), ValueId(2));
+        builder
+            .variable_ctx
+            .variable_map
+            .insert("s".to_string(), ValueId(3));
+        builder
+            .variable_ctx
+            .variable_map
+            .insert("digits".to_string(), ValueId(4));
+        builder
+            .variable_ctx
+            .variable_map
+            .insert("result".to_string(), ValueId(5));
 
         let condition = bin(BinaryOperator::Less, var("i"), var("len"));
 
@@ -1008,7 +1020,9 @@ mod tests {
 
         let break_if = ASTNode::If {
             condition: Box::new(bin(BinaryOperator::Less, var("digit_pos"), lit_i(0))),
-            then_body: vec![ASTNode::Break { span: Span::unknown() }],
+            then_body: vec![ASTNode::Break {
+                span: Span::unknown(),
+            }],
             else_body: None,
             span: Span::unknown(),
         };
@@ -1035,8 +1049,7 @@ mod tests {
 
         let ctx = build_pattern_context(&mut builder, &condition, &body, PatternVariant::Pattern2)
             .expect("build_pattern_context");
-        let mut inputs =
-            prepare_pattern2_inputs(&builder, &condition, &body, None, &ctx, false)
+        let mut inputs = prepare_pattern2_inputs(&builder, &condition, &body, None, &ctx, false)
             .expect("prepare_pattern2_inputs");
 
         promote_and_prepare_carriers(&mut builder, &condition, &body, &mut inputs, false, false)

src/mir/builder/control_flow/joinir/patterns/pattern3_with_if_phi.rs

@@ -183,7 +183,8 @@ impl MirBuilder {
             // Collect parent-defined variables from function scope
             // For now, use all variables in variable_map except loop_var
             let parent_defined: Vec<String> = self
-                .variable_ctx.variable_map
+                .variable_ctx
+                .variable_map
                 .keys()
                 .filter(|name| *name != &loop_var_name)
                 .cloned()
@@ -196,9 +197,11 @@ impl MirBuilder {
                         condition_bindings.iter().map(|b| b.name.clone()).collect();
 
                     // Run consistency checks
-                    if let Err(e) =
-                        check_ownership_plan_consistency(&plan, &ctx.carrier_info, &condition_binding_names)
-                    {
+                    if let Err(e) = check_ownership_plan_consistency(
+                        &plan,
+                        &ctx.carrier_info,
+                        &condition_binding_names,
+                    ) {
                         eprintln!("[phase64/ownership] Consistency check failed: {}", e);
                         return Err(e);
                     }

src/mir/builder/control_flow/joinir/patterns/pattern5_infinite_early_exit.rs

@@ -50,7 +50,13 @@ fn count_breaks_and_continues(body: &[ASTNode]) -> (usize, usize, bool) {
     let mut continue_count = 0;
     let mut has_nested_loop = false;
 
-    fn scan_node(node: &ASTNode, break_count: &mut usize, continue_count: &mut usize, has_nested_loop: &mut bool, depth: usize) {
+    fn scan_node(
+        node: &ASTNode,
+        break_count: &mut usize,
+        continue_count: &mut usize,
+        has_nested_loop: &mut bool,
+        depth: usize,
+    ) {
         match node {
             ASTNode::Break { .. } => {
                 *break_count += 1;
@@ -61,13 +67,29 @@ fn count_breaks_and_continues(body: &[ASTNode]) -> (usize, usize, bool) {
             ASTNode::Loop { .. } if depth > 0 => {
                 *has_nested_loop = true;
             }
-            ASTNode::If { then_body, else_body, .. } => {
+            ASTNode::If {
+                then_body,
+                else_body,
+                ..
+            } => {
                 for stmt in then_body {
-                    scan_node(stmt, break_count, continue_count, has_nested_loop, depth + 1);
+                    scan_node(
+                        stmt,
+                        break_count,
+                        continue_count,
+                        has_nested_loop,
+                        depth + 1,
+                    );
                 }
                 if let Some(else_body) = else_body {
                     for stmt in else_body {
-                        scan_node(stmt, break_count, continue_count, has_nested_loop, depth + 1);
+                        scan_node(
+                            stmt,
+                            break_count,
+                            continue_count,
+                            has_nested_loop,
+                            depth + 1,
+                        );
                     }
                 }
             }
@@ -76,7 +98,13 @@ fn count_breaks_and_continues(body: &[ASTNode]) -> (usize, usize, bool) {
     }
 
     for stmt in body {
-        scan_node(stmt, &mut break_count, &mut continue_count, &mut has_nested_loop, 0);
+        scan_node(
+            stmt,
+            &mut break_count,
+            &mut continue_count,
+            &mut has_nested_loop,
+            0,
+        );
     }
 
     (break_count, continue_count, has_nested_loop)
@@ -95,7 +123,12 @@ fn validate_continue_position(body: &[ASTNode]) -> bool {
 /// Phase 131-11-D: Validate break is in simple if pattern
 fn validate_break_pattern(body: &[ASTNode]) -> bool {
     for stmt in body {
-        if let ASTNode::If { then_body, else_body, .. } = stmt {
+        if let ASTNode::If {
+            then_body,
+            else_body,
+            ..
+        } = stmt
+        {
             // Check then branch for simple break
             if then_body.len() == 1 && matches!(then_body[0], ASTNode::Break { .. }) {
                 // Ensure no else-break pattern
@@ -132,13 +165,17 @@ pub(crate) fn can_lower(_builder: &MirBuilder, ctx: &LoopPatternContext) -> bool
     // Step 2: Shape guard - infinite loop condition (true literal)
     if !ctx.features.is_infinite_loop {
         if debug {
-            trace::trace().debug("pattern5/detect", "Not an infinite loop (condition != true)");
+            trace::trace().debug(
+                "pattern5/detect",
+                "Not an infinite loop (condition != true)",
+            );
         }
         return false;
     }
 
     // Phase 131-11-D: Enhanced real count validation
-    let (real_break_count, real_continue_count, has_nested_loop) = count_breaks_and_continues(ctx.body);
+    let (real_break_count, real_continue_count, has_nested_loop) =
+        count_breaks_and_continues(ctx.body);
 
     // Step 3: Shape guard - exactly 1 break (real count)
     if real_break_count != 1 {
@@ -232,11 +269,21 @@ fn extract_counter_name(body: &[ASTNode]) -> Result<String, String> {
     use crate::ast::BinaryOperator;
 
     for stmt in body {
-        if let ASTNode::If { condition, then_body, .. } = stmt {
+        if let ASTNode::If {
+            condition,
+            then_body,
+            ..
+        } = stmt
+        {
             // Check if then_body contains just break
             if then_body.len() == 1 && matches!(then_body[0], ASTNode::Break { .. }) {
                 // Extract counter from condition
-                if let ASTNode::BinaryOp { operator: BinaryOperator::Equal, left, .. } = condition.as_ref() {
+                if let ASTNode::BinaryOp {
+                    operator: BinaryOperator::Equal,
+                    left,
+                    ..
+                } = condition.as_ref()
+                {
                     if let ASTNode::Variable { name, .. } = left.as_ref() {
                         return Ok(name.clone());
                     }
@@ -256,12 +303,26 @@ fn extract_limit_value(body: &[ASTNode]) -> Result<i64, String> {
     use crate::ast::{BinaryOperator, LiteralValue};
 
     for stmt in body {
-        if let ASTNode::If { condition, then_body, .. } = stmt {
+        if let ASTNode::If {
+            condition,
+            then_body,
+            ..
+        } = stmt
+        {
             // Check if then_body contains just break
             if then_body.len() == 1 && matches!(then_body[0], ASTNode::Break { .. }) {
                 // Extract limit from condition
-                if let ASTNode::BinaryOp { operator: BinaryOperator::Equal, right, .. } = condition.as_ref() {
-                    if let ASTNode::Literal { value: LiteralValue::Integer(limit), .. } = right.as_ref() {
+                if let ASTNode::BinaryOp {
+                    operator: BinaryOperator::Equal,
+                    right,
+                    ..
+                } = condition.as_ref()
+                {
+                    if let ASTNode::Literal {
+                        value: LiteralValue::Integer(limit),
+                        ..
+                    } = right.as_ref()
+                    {
                         return Ok(*limit);
                     }
                 }
@@ -317,8 +378,16 @@ pub(crate) fn lower(
     }
 
     // Step 2: Get counter ValueId from variable_ctx.variable_map
-    let counter_id = builder.variable_ctx.variable_map.get(&counter_name).copied().ok_or_else(|| {
-        format!("Counter variable '{}' not found in variable_ctx.variable_map", counter_name)
+    let counter_id = builder
+        .variable_ctx
+        .variable_map
+        .get(&counter_name)
+        .copied()
+        .ok_or_else(|| {
+            format!(
+                "Counter variable '{}' not found in variable_ctx.variable_map",
+                counter_name
+            )
         })?;
 
     if debug {
@@ -340,7 +409,8 @@ pub(crate) fn lower(
     // Step 4: Generate JoinIR
     use crate::mir::join_ir::lowering::join_value_space::JoinValueSpace;
     use crate::mir::join_ir::{
-        BinOpKind, CompareOp, ConstValue, JoinFuncId, JoinFunction, JoinInst, JoinModule, MirLikeInst,
+        BinOpKind, CompareOp, ConstValue, JoinFuncId, JoinFunction, JoinInst, JoinModule,
+        MirLikeInst,
     };
 
     let mut join_value_space = JoinValueSpace::new();
@@ -397,15 +467,20 @@ pub(crate) fn lower(
     // ==================================================================
     // loop_step(counter) function - post-increment pattern
     // ==================================================================
-    let mut loop_step_func = JoinFunction::new(loop_step_id, "loop_step".to_string(), vec![counter_param]);
+    let mut loop_step_func =
+        JoinFunction::new(loop_step_id, "loop_step".to_string(), vec![counter_param]);
 
     // counter_next = counter + 1
-    loop_step_func.body.push(JoinInst::Compute(MirLikeInst::Const {
+    loop_step_func
+        .body
+        .push(JoinInst::Compute(MirLikeInst::Const {
             dst: const_1,
             value: ConstValue::Integer(1),
         }));
 
-    loop_step_func.body.push(JoinInst::Compute(MirLikeInst::BinOp {
+    loop_step_func
+        .body
+        .push(JoinInst::Compute(MirLikeInst::BinOp {
             dst: counter_next,
             op: BinOpKind::Add,
             lhs: counter_param,
@@ -413,12 +488,16 @@ pub(crate) fn lower(
         }));
 
     // break_cond = (counter_next == LIMIT)
-    loop_step_func.body.push(JoinInst::Compute(MirLikeInst::Const {
+    loop_step_func
+        .body
+        .push(JoinInst::Compute(MirLikeInst::Const {
             dst: const_limit,
             value: ConstValue::Integer(limit),
         }));
 
-    loop_step_func.body.push(JoinInst::Compute(MirLikeInst::Compare {
+    loop_step_func
+        .body
+        .push(JoinInst::Compute(MirLikeInst::Compare {
             dst: break_cond,
             op: CompareOp::Eq,
             lhs: counter_next,

src/mir/builder/control_flow/joinir/patterns/trim_loop_lowering.rs

@@ -241,7 +241,8 @@ impl TrimLoopLowerer {
                 // Step 3: Convert to CarrierInfo and merge
                 #[cfg(feature = "normalized_dev")]
                 // Phase 136 Step 4/7: Use binding_ctx for binding_map reference
-                let promoted_carrier = trim_info.to_carrier_info(Some(builder.binding_ctx.binding_map()));
+                let promoted_carrier =
+                    trim_info.to_carrier_info(Some(builder.binding_ctx.binding_map()));
                 #[cfg(not(feature = "normalized_dev"))]
                 let promoted_carrier = trim_info.to_carrier_info();
                 carrier_info.merge_from(&promoted_carrier);
@@ -352,10 +353,12 @@ impl TrimLoopLowerer {
         );
 
         // Get ValueIds for string and start
-        let s_id =
-            builder.variable_ctx.variable_map.get(&s_name).copied().ok_or_else(|| {
-                format!("[TrimLoopLowerer] String variable '{}' not found", s_name)
-            })?;
+        let s_id = builder
+            .variable_ctx
+            .variable_map
+            .get(&s_name)
+            .copied()
+            .ok_or_else(|| format!("[TrimLoopLowerer] String variable '{}' not found", s_name))?;
 
         // Compile start expression to get ValueId
         let start_id = builder.build_expression_impl(*start_expr)?;
@@ -403,7 +406,8 @@ impl TrimLoopLowerer {
 
         // Register carrier in variable_ctx.variable_map
         builder
-            .variable_ctx.variable_map
+            .variable_ctx
+            .variable_map
             .insert(trim_helper.carrier_name.clone(), is_ch_match0);
 
         Ok(())

src/mir/builder/control_flow/joinir/routing.rs

@@ -6,7 +6,6 @@ use crate::mir::builder::MirBuilder;
 use crate::mir::ValueId;
 
 impl MirBuilder {
-
     /// Phase 49: Try JoinIR Frontend for mainline integration
     ///
     /// Returns `Ok(Some(value))` if the loop is successfully lowered via JoinIR,
@@ -29,7 +28,8 @@ impl MirBuilder {
     ) -> Result<Option<ValueId>, String> {
         // Get current function name
         let func_name = self
-            .scope_ctx.current_function
+            .scope_ctx
+            .current_function
             .as_ref()
             .map(|f| f.signature.name.clone())
             .unwrap_or_default();
@@ -138,17 +138,38 @@ impl MirBuilder {
             match canonicalize_loop_expr(&loop_ast) {
                 Ok((skeleton, decision)) => {
                     eprintln!("[loop_canonicalizer] Function: {}", func_name);
-                    eprintln!("[loop_canonicalizer]   Skeleton steps: {}", skeleton.steps.len());
-                    eprintln!("[loop_canonicalizer]   Carriers: {}", skeleton.carriers.len());
-                    eprintln!("[loop_canonicalizer]   Has exits: {}", skeleton.exits.has_any_exit());
-                    eprintln!("[loop_canonicalizer]   Decision: {}",
-                        if decision.is_success() { "SUCCESS" } else { "FAIL_FAST" });
+                    eprintln!(
+                        "[loop_canonicalizer]   Skeleton steps: {}",
+                        skeleton.steps.len()
+                    );
+                    eprintln!(
+                        "[loop_canonicalizer]   Carriers: {}",
+                        skeleton.carriers.len()
+                    );
+                    eprintln!(
+                        "[loop_canonicalizer]   Has exits: {}",
+                        skeleton.exits.has_any_exit()
+                    );
+                    eprintln!(
+                        "[loop_canonicalizer]   Decision: {}",
+                        if decision.is_success() {
+                            "SUCCESS"
+                        } else {
+                            "FAIL_FAST"
+                        }
+                    );
                     if let Some(pattern) = decision.chosen {
                         eprintln!("[loop_canonicalizer]   Chosen pattern: {:?}", pattern);
                     }
-                    eprintln!("[loop_canonicalizer]   Missing caps: {:?}", decision.missing_caps);
+                    eprintln!(
+                        "[loop_canonicalizer]   Missing caps: {:?}",
+                        decision.missing_caps
+                    );
                     if decision.is_fail_fast() {
-                        eprintln!("[loop_canonicalizer]   Reason: {}", decision.notes.join("; "));
+                        eprintln!(
+                            "[loop_canonicalizer]   Reason: {}",
+                            decision.notes.join("; ")
+                        );
                     }
 
                     // Phase 137-4: Router parity verification
@@ -183,7 +204,11 @@ impl MirBuilder {
             func_name,
             &format!(
                 "fn_body_ast is {}",
-                if fn_body_clone.is_some() { "SOME" } else { "NONE" }
+                if fn_body_clone.is_some() {
+                    "SOME"
+                } else {
+                    "NONE"
+                }
             ),
         );
         let ctx = if let Some(ref fn_body) = fn_body_clone {

src/mir/builder/decls.rs

@@ -47,7 +47,10 @@ impl super::MirBuilder {
                     );
                     eprintln!("[DEBUG]   params.len() = {}", params.len());
                     eprintln!("[DEBUG]   body.len() = {}", body.len());
-                    eprintln!("[DEBUG]   variable_map = {:?}", self.variable_ctx.variable_map);
+                    eprintln!(
+                        "[DEBUG]   variable_map = {:?}",
+                        self.variable_ctx.variable_map
+                    );
                     // Note: Metadata clearing is now handled by BoxCompilationContext (箱理論)
                     // See lifecycle.rs and builder_calls.rs for context swap implementation
                     let _ = self.lower_static_method_as_function(
@@ -58,7 +61,10 @@ impl super::MirBuilder {
                     eprintln!(
                         "[DEBUG] build_static_main_box: After lower_static_method_as_function"
                     );
-                    eprintln!("[DEBUG]   variable_map = {:?}", self.variable_ctx.variable_map);
+                    eprintln!(
+                        "[DEBUG]   variable_map = {:?}",
+                        self.variable_ctx.variable_map
+                    );
                 }
                 // Initialize local variables for Main.main() parameters
                 // Note: These are local variables in the wrapper main() function, NOT parameters
@@ -75,8 +81,11 @@ impl super::MirBuilder {
                             box_type: "ArrayBox".to_string(),
                             args: vec![],
                         })?;
-                        self.type_ctx.value_origin_newbox.insert(pid, "ArrayBox".to_string());
-                        self.type_ctx.value_types
+                        self.type_ctx
+                            .value_origin_newbox
+                            .insert(pid, "ArrayBox".to_string());
+                        self.type_ctx
+                            .value_types
                             .insert(pid, super::MirType::Box("ArrayBox".to_string()));
                         // Explicitly call birth() to initialize internal state
                         self.emit_instruction(MirInstruction::BoxCall {
@@ -206,7 +215,8 @@ impl super::MirBuilder {
                 if let Some((k, prop)) = kind_and_prop {
                     use std::collections::HashMap;
                     let entry: &mut HashMap<String, super::PropertyKind> = self
-                        .comp_ctx.property_getters_by_box
+                        .comp_ctx
+                        .property_getters_by_box
                         .entry(name.clone())
                         .or_insert_with(HashMap::new);
                     entry.insert(prop, k);

src/mir/builder/emission/constant.rs

@@ -14,7 +14,9 @@ pub fn emit_integer(b: &mut MirBuilder, val: i64) -> ValueId {
         value: ConstValue::Integer(val),
     });
     // Phase 84-1: Integer constant type annotation
-    b.type_ctx.value_types.insert(dst, crate::mir::MirType::Integer);
+    b.type_ctx
+        .value_types
+        .insert(dst, crate::mir::MirType::Integer);
     dst
 }
 
@@ -26,7 +28,9 @@ pub fn emit_bool(b: &mut MirBuilder, val: bool) -> ValueId {
         value: ConstValue::Bool(val),
     });
     // Phase 84-1: Bool constant type annotation
-    b.type_ctx.value_types.insert(dst, crate::mir::MirType::Bool);
+    b.type_ctx
+        .value_types
+        .insert(dst, crate::mir::MirType::Bool);
     dst
 }
 
@@ -38,7 +42,9 @@ pub fn emit_float(b: &mut MirBuilder, val: f64) -> ValueId {
         value: ConstValue::Float(val),
     });
     // Phase 84-1: Float constant type annotation
-    b.type_ctx.value_types.insert(dst, crate::mir::MirType::Float);
+    b.type_ctx
+        .value_types
+        .insert(dst, crate::mir::MirType::Float);
     dst
 }
 
@@ -51,9 +57,12 @@ pub fn emit_string<S: Into<String>>(b: &mut MirBuilder, s: S) -> ValueId {
     });
     // 🎯 Phase 3-A: String constant type annotation
     // Ensures string constants have proper Box type for method resolution
-    b.type_ctx.value_types
+    b.type_ctx
+        .value_types
         .insert(dst, crate::mir::MirType::Box("StringBox".to_string()));
-    b.type_ctx.value_origin_newbox.insert(dst, "StringBox".to_string());
+    b.type_ctx
+        .value_origin_newbox
+        .insert(dst, "StringBox".to_string());
     dst
 }
 
@@ -66,7 +75,9 @@ pub fn emit_null(b: &mut MirBuilder) -> ValueId {
     });
     // Phase 84-1: Null constant type annotation
     // Note: MirType has no Null variant, using Unknown as fallback
-    b.type_ctx.value_types.insert(dst, crate::mir::MirType::Unknown);
+    b.type_ctx
+        .value_types
+        .insert(dst, crate::mir::MirType::Unknown);
     dst
 }
 
@@ -78,6 +89,8 @@ pub fn emit_void(b: &mut MirBuilder) -> ValueId {
         value: ConstValue::Void,
     });
     // Phase 84-1: Void constant type annotation
-    b.type_ctx.value_types.insert(dst, crate::mir::MirType::Void);
+    b.type_ctx
+        .value_types
+        .insert(dst, crate::mir::MirType::Void);
     dst
 }

src/mir/builder/exprs.rs

@@ -222,7 +222,8 @@ impl super::MirBuilder {
                                     body.clone(),
                                 )?;
                                 // Index static method for fallback resolution of bare calls
-                                self.comp_ctx.static_method_index
+                                self.comp_ctx
+                                    .static_method_index
                                     .entry(method_name.clone())
                                     .or_insert_with(Vec::new)
                                     .push((name.clone(), params.len()));
@@ -306,14 +307,18 @@ impl super::MirBuilder {
                     args: vec![],
                     effects: super::EffectMask::MUT,
                 })?;
-                self.type_ctx.value_origin_newbox
+                self.type_ctx
+                    .value_origin_newbox
                     .insert(arr_id, "ArrayBox".to_string());
-                self.type_ctx.value_types
+                self.type_ctx
+                    .value_types
                     .insert(arr_id, super::MirType::Box("ArrayBox".to_string()));
                 // TypeRegistry + trace for deterministic debug
-                self.comp_ctx.type_registry
+                self.comp_ctx
+                    .type_registry
                     .record_newbox(arr_id, "ArrayBox".to_string());
-                self.comp_ctx.type_registry
+                self.comp_ctx
+                    .type_registry
                     .record_type(arr_id, super::MirType::Box("ArrayBox".to_string()));
                 type_trace::origin("newbox:ArrayLiteral", arr_id, "ArrayBox");
                 type_trace::ty(
@@ -350,13 +355,17 @@ impl super::MirBuilder {
                     args: vec![],
                     effects: super::EffectMask::MUT,
                 })?;
-                self.type_ctx.value_origin_newbox
+                self.type_ctx
+                    .value_origin_newbox
                     .insert(map_id, "MapBox".to_string());
-                self.type_ctx.value_types
+                self.type_ctx
+                    .value_types
                     .insert(map_id, super::MirType::Box("MapBox".to_string()));
-                self.comp_ctx.type_registry
+                self.comp_ctx
+                    .type_registry
                     .record_newbox(map_id, "MapBox".to_string());
-                self.comp_ctx.type_registry
+                self.comp_ctx
+                    .type_registry
                     .record_type(map_id, super::MirType::Box("MapBox".to_string()));
                 type_trace::origin("newbox:MapLiteral", map_id, "MapBox");
                 type_trace::ty(
@@ -404,7 +413,10 @@ impl super::MirBuilder {
         if let Some(cls) = self.type_ctx.value_origin_newbox.get(&target_val) {
             return Some(cls.clone());
         }
-        self.type_ctx.value_types.get(&target_val).and_then(|ty| match ty {
+        self.type_ctx
+            .value_types
+            .get(&target_val)
+            .and_then(|ty| match ty {
                 super::MirType::Box(name) => Some(name.clone()),
                 super::MirType::String => Some("String".to_string()),
                 super::MirType::Integer => Some("Integer".to_string()),

src/mir/builder/exprs_lambda.rs

@@ -170,7 +170,8 @@ impl super::MirBuilder {
             captures,
             me,
         })?;
-        self.type_ctx.value_types
+        self.type_ctx
+            .value_types
             .insert(dst, crate::mir::MirType::Box("FunctionBox".to_string()));
         Ok(dst)
     }

src/mir/builder/exprs_peek.rs

@@ -118,7 +118,9 @@ impl super::MirBuilder {
         // Merge and yield result
         self.start_new_block(merge_block)?;
         // フェーズM: PHI はブロック先頭に配置（cf_common 統一）
-        if let (Some(func), Some(cur_bb)) = (self.scope_ctx.current_function.as_mut(), self.current_block) {
+        if let (Some(func), Some(cur_bb)) =
+            (self.scope_ctx.current_function.as_mut(), self.current_block)
+        {
             crate::mir::ssot::cf_common::insert_phi_at_head_spanned(
                 func,
                 cur_bb,

src/mir/builder/fields.rs

@@ -16,7 +16,12 @@ impl super::MirBuilder {
 
         // Unified members: if object class is known and has a synthetic getter for `field`,
         // rewrite to method call `__get_<field>()`.
-        if let Some(class_name) = self.type_ctx.value_origin_newbox.get(&object_value).cloned() {
+        if let Some(class_name) = self
+            .type_ctx
+            .value_origin_newbox
+            .get(&object_value)
+            .cloned()
+        {
             if let Some(map) = self.comp_ctx.property_getters_by_box.get(&class_name) {
                 if let Some(kind) = map.get(&field) {
                     let mname = match kind {
@@ -53,15 +58,24 @@ impl super::MirBuilder {
 
         // Propagate recorded origin class for this field if any (ValueId-scoped)
         if let Some(class_name) = self
-            .comp_ctx.field_origin_class
+            .comp_ctx
+            .field_origin_class
             .get(&(object_value, field.clone()))
             .cloned()
         {
-            self.type_ctx.value_origin_newbox.insert(field_val, class_name);
-        } else if let Some(base_cls) = self.type_ctx.value_origin_newbox.get(&object_value).cloned() {
+            self.type_ctx
+                .value_origin_newbox
+                .insert(field_val, class_name);
+        } else if let Some(base_cls) = self
+            .type_ctx
+            .value_origin_newbox
+            .get(&object_value)
+            .cloned()
+        {
             // Cross-function heuristic: use class-level field origin mapping
             if let Some(fcls) = self
-                .comp_ctx.field_origin_by_box
+                .comp_ctx
+                .field_origin_by_box
                 .get(&(base_cls.clone(), field.clone()))
                 .cloned()
             {
@@ -78,8 +92,11 @@ impl super::MirBuilder {
         }
 
         // If base is a known newbox and field is weak, emit WeakLoad (+ optional barrier)
-        let mut inferred_class: Option<String> =
-            self.type_ctx.value_origin_newbox.get(&object_value).cloned();
+        let mut inferred_class: Option<String> = self
+            .type_ctx
+            .value_origin_newbox
+            .get(&object_value)
+            .cloned();
         if inferred_class.is_none() {
             if let ASTNode::FieldAccess {
                 object: inner_obj,
@@ -89,7 +106,8 @@ impl super::MirBuilder {
             {
                 if let Ok(base_id) = self.build_expression(*inner_obj.clone()) {
                     if let Some(cls) = self
-                        .comp_ctx.field_origin_class
+                        .comp_ctx
+                        .field_origin_class
                         .get(&(base_id, inner_field))
                         .cloned()
                     {
@@ -128,7 +146,12 @@ impl super::MirBuilder {
         value_result = self.local_arg(value_result);
 
         // If base is known and field is weak, create WeakRef before store
-        if let Some(class_name) = self.type_ctx.value_origin_newbox.get(&object_value).cloned() {
+        if let Some(class_name) = self
+            .type_ctx
+            .value_origin_newbox
+            .get(&object_value)
+            .cloned()
+        {
             if let Some(weak_set) = self.comp_ctx.weak_fields_by_box.get(&class_name) {
                 if weak_set.contains(&field) {
                     value_result = self.emit_weak_new(value_result)?;
@@ -158,7 +181,12 @@ impl super::MirBuilder {
         })?;
 
         // Write barrier if weak field
-        if let Some(class_name) = self.type_ctx.value_origin_newbox.get(&object_value).cloned() {
+        if let Some(class_name) = self
+            .type_ctx
+            .value_origin_newbox
+            .get(&object_value)
+            .cloned()
+        {
             if let Some(weak_set) = self.comp_ctx.weak_fields_by_box.get(&class_name) {
                 if weak_set.contains(&field) {
                     let _ = self.emit_barrier_write(value_result);
@@ -167,12 +195,24 @@ impl super::MirBuilder {
         }
 
         // Record origin class for this field value if known
-        if let Some(val_cls) = self.type_ctx.value_origin_newbox.get(&value_result).cloned() {
-            self.comp_ctx.field_origin_class
+        if let Some(val_cls) = self
+            .type_ctx
+            .value_origin_newbox
+            .get(&value_result)
+            .cloned()
+        {
+            self.comp_ctx
+                .field_origin_class
                 .insert((object_value, field.clone()), val_cls.clone());
             // Also record class-level mapping if base object class is known
-            if let Some(base_cls) = self.type_ctx.value_origin_newbox.get(&object_value).cloned() {
-                self.comp_ctx.field_origin_by_box
+            if let Some(base_cls) = self
+                .type_ctx
+                .value_origin_newbox
+                .get(&object_value)
+                .cloned()
+            {
+                self.comp_ctx
+                    .field_origin_by_box
                     .insert((base_cls, field.clone()), val_cls);
             }
         }

src/mir/builder/if_form.rs

@@ -22,9 +22,10 @@ impl<'a> PhiBuilderOps for ToplevelOps<'a> {
         inputs: Vec<(BasicBlockId, ValueId)>,
     ) -> Result<(), String> {
         // merge ブロックの先頭に PHI を挿入
-        if let (Some(func), Some(_cur_bb)) =
-            (self.0.scope_ctx.current_function.as_mut(), self.0.current_block)
-        {
+        if let (Some(func), Some(_cur_bb)) = (
+            self.0.scope_ctx.current_function.as_mut(),
+            self.0.current_block,
+        ) {
             crate::mir::ssot::cf_common::insert_phi_at_head_spanned(
                 func,
                 block,
@@ -170,7 +171,11 @@ impl MirBuilder {
                     }
                 }
                 let val = self.build_expression(else_ast.clone())?;
-                (val, Some(else_ast), Some(self.variable_ctx.variable_map.clone()))
+                (
+                    val,
+                    Some(else_ast),
+                    Some(self.variable_ctx.variable_map.clone()),
+                )
             } else {
                 // No else branch: materialize PHI nodes for the empty else block
                 self.variable_ctx.variable_map = pre_if_var_map.clone();
@@ -222,7 +227,8 @@ impl MirBuilder {
 
         // 関数名ガードチェック
         let func_name = self
-            .scope_ctx.current_function
+            .scope_ctx
+            .current_function
             .as_ref()
             .map(|f| f.signature.name.as_str())
             .unwrap_or("");

src/mir/builder/lifecycle.rs

@@ -92,7 +92,8 @@ impl super::MirBuilder {
                 } else {
                     for (mname, mast) in methods {
                         if let ASTNode::FunctionDeclaration { params, .. } = mast {
-                            self.comp_ctx.static_method_index
+                            self.comp_ctx
+                                .static_method_index
                                 .entry(mname.clone())
                                 .or_insert_with(Vec::new)
                                 .push((name.clone(), params.len()));
@@ -207,7 +208,8 @@ impl super::MirBuilder {
                                                     params.clone(),
                                                     body.clone(),
                                                 )?;
-                                                self.comp_ctx.static_method_index
+                                                self.comp_ctx
+                                                    .static_method_index
                                                     .entry(mname.clone())
                                                     .or_insert_with(Vec::new)
                                                     .push((name.clone(), params.len()));
@@ -447,7 +449,8 @@ impl super::MirBuilder {
                     // PHI + Copy の小グラフを DFS 探索し、1 種類の型に収束する場合のみ返す。
                     // これにより Loop edge copy / If merge 後の型推論が解決できる。
                     if hint.is_none() {
-                        let phi_resolver = PhiTypeResolver::new(&function, &self.type_ctx.value_types);
+                        let phi_resolver =
+                            PhiTypeResolver::new(&function, &self.type_ctx.value_types);
                         if let Some(mt) = phi_resolver.resolve(*v) {
                             if std::env::var("NYASH_P4_DEBUG").is_ok() {
                                 eprintln!(
@@ -461,9 +464,11 @@ impl super::MirBuilder {
                     }
                     // Phase 67: P3-C 対象なら GenericTypeResolver を優先使用
                     if hint.is_none() && TypeHintPolicy::is_p3c_target(&function.signature.name) {
-                        if let Some(mt) =
-                            GenericTypeResolver::resolve_from_phi(&function, *v, &self.type_ctx.value_types)
-                        {
+                        if let Some(mt) = GenericTypeResolver::resolve_from_phi(
+                            &function,
+                            *v,
+                            &self.type_ctx.value_types,
+                        ) {
                             if std::env::var("NYASH_P3C_DEBUG").is_ok() {
                                 eprintln!(
                                     "[lifecycle/p3c] {} type inferred via GenericTypeResolver: {:?}",
@@ -650,7 +655,9 @@ impl super::MirBuilder {
                                 .unwrap_or(MirType::Unknown),
                             Callee::Constructor { box_type } => {
                                 let ret = MirType::Box(box_type.clone());
-                                self.type_ctx.value_origin_newbox.insert(*dst, box_type.clone());
+                                self.type_ctx
+                                    .value_origin_newbox
+                                    .insert(*dst, box_type.clone());
                                 ret
                             }
                             _ => MirType::Unknown,

src/mir/builder/method_call_handlers.rs

@@ -24,7 +24,8 @@ impl MeCallPolicyBox {
     ) -> Result<Option<ValueId>, String> {
         // Instance box: prefer enclosing box method (lowered function) if存在
         let enclosing_cls: Option<String> = builder
-            .scope_ctx.current_function
+            .scope_ctx
+            .current_function
             .as_ref()
             .and_then(|f| f.signature.name.split('.').next().map(|s| s.to_string()));
 

src/mir/builder/observe/resolve.rs

@@ -25,7 +25,8 @@ fn sample_every() -> usize {
 /// Dev‑only: emit a resolve.try event（candidates inspection）。
 pub(crate) fn emit_try(builder: &MirBuilder, meta: serde_json::Value) {
     let fn_name = builder
-        .scope_ctx.current_function
+        .scope_ctx
+        .current_function
         .as_ref()
         .map(|f| f.signature.name.as_str());
     let region = builder.debug_current_region_id();
@@ -35,7 +36,8 @@ pub(crate) fn emit_try(builder: &MirBuilder, meta: serde_json::Value) {
 /// Dev‑only: emit a resolve.choose event（decision）。
 pub(crate) fn emit_choose(builder: &MirBuilder, meta: serde_json::Value) {
     let fn_name = builder
-        .scope_ctx.current_function
+        .scope_ctx
+        .current_function
         .as_ref()
         .map(|f| f.signature.name.as_str());
     let region = builder.debug_current_region_id();

src/mir/builder/observe/ssa.rs

@@ -18,13 +18,15 @@ pub(crate) fn emit_phi(builder: &MirBuilder, dst: ValueId, inputs: &Vec<(BasicBl
         })
         .collect();
     let decided_t = builder
-        .type_ctx.value_types
+        .type_ctx
+        .value_types
         .get(&dst)
         .cloned()
         .map(|tt| format!("{:?}", tt))
         .unwrap_or_default();
     let decided_o = builder
-        .type_ctx.value_origin_newbox
+        .type_ctx
+        .value_origin_newbox
         .get(&dst)
         .cloned()
         .unwrap_or_default();
@@ -35,7 +37,8 @@ pub(crate) fn emit_phi(builder: &MirBuilder, dst: ValueId, inputs: &Vec<(BasicBl
         "decided_origin": decided_o,
     });
     let fn_name = builder
-        .scope_ctx.current_function
+        .scope_ctx
+        .current_function
         .as_ref()
         .map(|f| f.signature.name.as_str());
     let region = builder.debug_current_region_id();

src/mir/builder/ops.rs

@@ -48,7 +48,8 @@ impl super::MirBuilder {
             BinaryOpType::Arithmetic(op) => {
                 // Dev: Lower '+' を演算子ボックス呼び出しに置換（既定OFF）
                 let in_add_op = self
-                    .scope_ctx.current_function
+                    .scope_ctx
+                    .current_function
                     .as_ref()
                     .map(|f| f.signature.name.starts_with("AddOperator.apply/"))
                     .unwrap_or(false);
@@ -80,9 +81,11 @@ impl super::MirBuilder {
                     match (lhs_type, rhs_type) {
                         (String, String) => {
                             // BOTH are strings: result is string
-                            self.type_ctx.value_types
+                            self.type_ctx
+                                .value_types
                                 .insert(dst, MirType::Box("StringBox".to_string()));
-                            self.type_ctx.value_origin_newbox
+                            self.type_ctx
+                                .value_origin_newbox
                                 .insert(dst, "StringBox".to_string());
                         }
                         (Integer, Integer) | (Integer, Unknown) | (Unknown, Integer) => {
@@ -121,7 +124,8 @@ impl super::MirBuilder {
                     };
                     if !name.is_empty() {
                         let in_guard = self
-                            .scope_ctx.current_function
+                            .scope_ctx
+                            .current_function
                             .as_ref()
                             .map(|f| f.signature.name.starts_with(guard_prefix))
                             .unwrap_or(false);
@@ -172,9 +176,11 @@ impl super::MirBuilder {
                             match (lhs_type, rhs_type) {
                                 (String, String) => {
                                     // BOTH are strings: result is definitely a string
-                                    self.type_ctx.value_types
+                                    self.type_ctx
+                                        .value_types
                                         .insert(dst, MirType::Box("StringBox".to_string()));
-                                    self.type_ctx.value_origin_newbox
+                                    self.type_ctx
+                                        .value_origin_newbox
                                         .insert(dst, "StringBox".to_string());
                                 }
                                 (Integer, Integer) | (Integer, Unknown) | (Unknown, Integer) => {
@@ -217,7 +223,8 @@ impl super::MirBuilder {
                             Some(MirType::String) => true,
                             Some(MirType::Box(bt)) if bt == "StringBox" => true,
                             _ => self
-                                .type_ctx.value_origin_newbox
+                                .type_ctx
+                                .value_origin_newbox
                                 .get(&lhs)
                                 .map(|s| s == "StringBox")
                                 .unwrap_or(false),
@@ -226,16 +233,19 @@ impl super::MirBuilder {
                             Some(MirType::String) => true,
                             Some(MirType::Box(bt)) if bt == "StringBox" => true,
                             _ => self
-                                .type_ctx.value_origin_newbox
+                                .type_ctx
+                                .value_origin_newbox
                                 .get(&rhs)
                                 .map(|s| s == "StringBox")
                                 .unwrap_or(false),
                         };
                         if lhs_is_str && rhs_is_str {
                             // BOTH are strings: result is definitely a string
-                            self.type_ctx.value_types
+                            self.type_ctx
+                                .value_types
                                 .insert(dst, MirType::Box("StringBox".to_string()));
-                            self.type_ctx.value_origin_newbox
+                            self.type_ctx
+                                .value_origin_newbox
                                 .insert(dst, "StringBox".to_string());
                         } else if !lhs_is_str && !rhs_is_str {
                             // NEITHER is a string: numeric addition
@@ -252,7 +262,8 @@ impl super::MirBuilder {
             BinaryOpType::Comparison(op) => {
                 // Dev: Lower 比較 を演算子ボックス呼び出しに置換（既定OFF）
                 let in_cmp_op = self
-                    .scope_ctx.current_function
+                    .scope_ctx
+                    .current_function
                     .as_ref()
                     .map(|f| f.signature.name.starts_with("CompareOperator.apply/"))
                     .unwrap_or(false);
@@ -285,12 +296,14 @@ impl super::MirBuilder {
                 } else {
                     // 既存の比較経路（安全のための型注釈/slot化含む）
                     let (lhs2_raw, rhs2_raw) = if self
-                        .type_ctx.value_origin_newbox
+                        .type_ctx
+                        .value_origin_newbox
                         .get(&lhs)
                         .map(|s| s == "IntegerBox")
                         .unwrap_or(false)
                         && self
-                            .type_ctx.value_origin_newbox
+                            .type_ctx
+                            .value_origin_newbox
                             .get(&rhs)
                             .map(|s| s == "IntegerBox")
                             .unwrap_or(false)
@@ -541,7 +554,8 @@ impl super::MirBuilder {
             };
             if !name.is_empty() {
                 let in_guard = self
-                    .scope_ctx.current_function
+                    .scope_ctx
+                    .current_function
                     .as_ref()
                     .map(|f| f.signature.name.starts_with(guard_prefix))
                     .unwrap_or(false);

src/mir/builder/origin/infer.rs

@@ -23,7 +23,10 @@ pub(crate) fn annotate_me_origin(builder: &mut MirBuilder, me_id: ValueId) {
     }
     if let Some(c) = cls {
         // Record both origin class and a Box type hint for downstream passes（観測用）。
-        builder.type_ctx.value_origin_newbox.insert(me_id, c.clone());
+        builder
+            .type_ctx
+            .value_origin_newbox
+            .insert(me_id, c.clone());
         builder.type_ctx.value_types.insert(me_id, MirType::Box(c));
     }
 }

src/mir/builder/phi.rs

@@ -70,7 +70,8 @@ impl MirBuilder {
                     if let Some(func) = self.scope_ctx.current_function.as_mut() {
                         func.update_cfg();
                     }
-                    if let (Some(func), Some(cur_bb)) = (&self.scope_ctx.current_function, self.current_block)
+                    if let (Some(func), Some(cur_bb)) =
+                        (&self.scope_ctx.current_function, self.current_block)
                     {
                         crate::mir::phi_core::common::debug_verify_phi_inputs(
                             func, cur_bb, &inputs,
@@ -94,7 +95,9 @@ impl MirBuilder {
                             type_hint: None, // Phase 63-6: Legacy path, no type hint
                         })?;
                     }
-                    self.variable_ctx.variable_map.insert(pin_name.clone(), merged);
+                    self.variable_ctx
+                        .variable_map
+                        .insert(pin_name.clone(), merged);
                 }
             }
         }
@@ -172,7 +175,8 @@ impl MirBuilder {
                     if let Some(func) = self.scope_ctx.current_function.as_mut() {
                         func.update_cfg();
                     }
-                    if let (Some(func), Some(cur_bb)) = (&self.scope_ctx.current_function, self.current_block)
+                    if let (Some(func), Some(cur_bb)) =
+                        (&self.scope_ctx.current_function, self.current_block)
                     {
                         crate::mir::phi_core::common::debug_verify_phi_inputs(
                             func, cur_bb, &inputs,
@@ -205,7 +209,8 @@ impl MirBuilder {
                     if let Some(func) = self.scope_ctx.current_function.as_mut() {
                         func.update_cfg();
                     }
-                    if let (Some(func), Some(cur_bb)) = (&self.scope_ctx.current_function, self.current_block)
+                    if let (Some(func), Some(cur_bb)) =
+                        (&self.scope_ctx.current_function, self.current_block)
                     {
                         crate::mir::phi_core::common::debug_verify_phi_inputs(
                             func, cur_bb, &inputs,

src/mir/builder/phi_merge.rs

@@ -89,9 +89,10 @@ impl<'a> PhiMergeHelper<'a> {
                 if let Some(func) = self.builder.scope_ctx.current_function.as_mut() {
                     func.update_cfg();
                 }
-                if let (Some(func), Some(cur_bb)) =
-                    (&self.builder.scope_ctx.current_function, self.builder.current_block)
-                {
+                if let (Some(func), Some(cur_bb)) = (
+                    &self.builder.scope_ctx.current_function,
+                    self.builder.current_block,
+                ) {
                     crate::mir::phi_core::common::debug_verify_phi_inputs(func, cur_bb, &inputs);
                 }
                 let merged = self.builder.insert_phi(inputs)?;
@@ -135,9 +136,10 @@ impl<'a> PhiMergeHelper<'a> {
                 if let Some(func) = self.builder.scope_ctx.current_function.as_mut() {
                     func.update_cfg();
                 }
-                if let (Some(func), Some(cur_bb)) =
-                    (&self.builder.scope_ctx.current_function, self.builder.current_block)
-                {
+                if let (Some(func), Some(cur_bb)) = (
+                    &self.builder.scope_ctx.current_function,
+                    self.builder.current_block,
+                ) {
                     crate::mir::phi_core::common::debug_verify_phi_inputs(func, cur_bb, &inputs);
                 }
                 self.builder.insert_phi_with_dst(dst, inputs)?;

src/mir/builder/receiver.rs

@@ -23,13 +23,15 @@ pub fn finalize_method_receiver(builder: &mut MirBuilder, callee: &mut Callee) {
         // Optional dev trace for receiver aliases
         if std::env::var("NYASH_BUILDER_TRACE_RECV").ok().as_deref() == Some("1") {
             let current_fn = builder
-                .scope_ctx.current_function
+                .scope_ctx
+                .current_function
                 .as_ref()
                 .map(|f| f.signature.name.clone())
                 .unwrap_or_else(|| "<none>".to_string());
             let bb = builder.current_block;
             let names: Vec<String> = builder
-                .variable_ctx.variable_map
+                .variable_ctx
+                .variable_map
                 .iter()
                 .filter(|(_, &vid)| vid == r)
                 .map(|(k, _)| k.clone())

src/mir/builder/rewrite/known.rs

@@ -40,7 +40,12 @@ pub(crate) fn try_known_rewrite(
         return None;
     }
     // Receiver must be Known (origin 由来)
-    if builder.type_ctx.value_origin_newbox.get(&object_value).is_none() {
+    if builder
+        .type_ctx
+        .value_origin_newbox
+        .get(&object_value)
+        .is_none()
+    {
         return None;
     }
     // Only user-defined boxes (plugin/core boxesは対象外)
@@ -54,7 +59,11 @@ pub(crate) fn try_known_rewrite(
         .ok()
         .as_deref()
         == Some("1");
-    let from_new_origin = builder.type_ctx.value_origin_newbox.get(&object_value).is_some();
+    let from_new_origin = builder
+        .type_ctx
+        .value_origin_newbox
+        .get(&object_value)
+        .is_some();
     let arity = arg_values.len();
     let fname = crate::mir::builder::calls::function_lowering::generate_method_function_name(
         cls, method, arity,
@@ -107,7 +116,12 @@ pub(crate) fn try_known_rewrite_to_dst(
     if !rewrite_enabled() {
         return None;
     }
-    if builder.type_ctx.value_origin_newbox.get(&object_value).is_none() {
+    if builder
+        .type_ctx
+        .value_origin_newbox
+        .get(&object_value)
+        .is_none()
+    {
         return None;
     }
     if !builder.comp_ctx.user_defined_boxes.contains(cls) {
@@ -119,7 +133,11 @@ pub(crate) fn try_known_rewrite_to_dst(
         .ok()
         .as_deref()
         == Some("1");
-    let from_new_origin = builder.type_ctx.value_origin_newbox.get(&object_value).is_some();
+    let from_new_origin = builder
+        .type_ctx
+        .value_origin_newbox
+        .get(&object_value)
+        .is_some();
     let arity = arg_values.len();
     let fname = crate::mir::builder::calls::function_lowering::generate_method_function_name(
         cls, method, arity,
@@ -171,7 +189,12 @@ pub(crate) fn try_unique_suffix_rewrite(
         return None;
     }
     // Only attempt if receiver is Known (keeps behavior stable and avoids surprises)
-    if builder.type_ctx.value_origin_newbox.get(&object_value).is_none() {
+    if builder
+        .type_ctx
+        .value_origin_newbox
+        .get(&object_value)
+        .is_none()
+    {
         return None;
     }
     let mut cands: Vec<String> = builder.method_candidates(method, arg_values.len());
@@ -222,7 +245,12 @@ pub(crate) fn try_unique_suffix_rewrite_to_dst(
     if !rewrite_enabled() {
         return None;
     }
-    if builder.type_ctx.value_origin_newbox.get(&object_value).is_none() {
+    if builder
+        .type_ctx
+        .value_origin_newbox
+        .get(&object_value)
+        .is_none()
+    {
         return None;
     }
     let mut cands: Vec<String> = builder.method_candidates(method, arg_values.len());

src/mir/builder/schedule/block.rs

@@ -64,7 +64,10 @@ impl BlockScheduleBox {
         if std::env::var("NYASH_BLOCK_SCHEDULE_VERIFY").ok().as_deref() != Some("1") {
             return;
         }
-        let (f_opt, bb_opt) = (builder.scope_ctx.current_function.as_ref(), builder.current_block);
+        let (f_opt, bb_opt) = (
+            builder.scope_ctx.current_function.as_ref(),
+            builder.current_block,
+        );
         let (Some(fun), Some(bb_id)) = (f_opt, bb_opt) else {
             return;
         };

src/mir/builder/scope_context.rs

@@ -72,8 +72,7 @@ impl ScopeContext {
     /// Push new lexical scope frame
     #[inline]
     pub(super) fn push_lexical_scope(&mut self) {
-        self.lexical_scope_stack
-            .push(LexicalScopeFrame::default());
+        self.lexical_scope_stack.push(LexicalScopeFrame::default());
     }
 
     /// Pop lexical scope frame (returns frame for restoration)

src/mir/builder/ssa/local.rs

@@ -63,7 +63,8 @@ pub fn ensure(builder: &mut MirBuilder, v: ValueId, kind: LocalKind) -> ValueId
         let mut slot_name_opt: Option<String> = None;
 
         let names_for_v: Vec<String> = builder
-            .variable_ctx.variable_map
+            .variable_ctx
+            .variable_map
             .iter()
             .filter(|(k, &vid)| vid == v && k.starts_with("__pin$"))
             .map(|(k, _)| k.clone())
@@ -116,13 +117,17 @@ pub fn ensure(builder: &mut MirBuilder, v: ValueId, kind: LocalKind) -> ValueId
             builder.type_ctx.value_types.insert(loc, t);
         }
         if let Some(cls) = builder.type_ctx.value_origin_newbox.get(&v).cloned() {
-            builder.type_ctx.value_origin_newbox.insert(loc, cls.clone());
+            builder
+                .type_ctx
+                .value_origin_newbox
+                .insert(loc, cls.clone());
 
             // CRITICAL FIX: For receiver kind, if type is missing but origin exists,
             // infer MirType::Box from origin
             if kind == LocalKind::Recv && builder.type_ctx.value_types.get(&loc).is_none() {
                 builder
-                    .type_ctx.value_types
+                    .type_ctx
+                    .value_types
                     .insert(loc, crate::mir::MirType::Box(cls));
             }
         }

src/mir/builder/stmts.rs

@@ -181,7 +181,8 @@ impl super::MirBuilder {
                 idx + 1,
                 total,
                 self.current_block,
-                self.scope_ctx.current_function
+                self.scope_ctx
+                    .current_function
                     .as_ref()
                     .map(|f| f.signature.name.as_str())
                     .unwrap_or("none")
@@ -427,9 +428,12 @@ impl super::MirBuilder {
             })?;
             // Future spawn returns a Future<T>; the inner type is not statically known here.
             // Register at least Future<Unknown> to avoid later fail-fast type inference panics.
-            self.type_ctx.value_types
+            self.type_ctx
+                .value_types
                 .insert(future_id, MirType::Future(Box::new(MirType::Unknown)));
-            self.variable_ctx.variable_map.insert(variable.clone(), future_id);
+            self.variable_ctx
+                .variable_map
+                .insert(variable.clone(), future_id);
             if let Some(reg) = self.comp_ctx.current_slot_registry.as_mut() {
                 reg.ensure_slot(&variable, None);
             }
@@ -442,13 +446,17 @@ impl super::MirBuilder {
             value: expression_value,
         })?;
         let inner = self
-            .type_ctx.value_types
+            .type_ctx
+            .value_types
             .get(&expression_value)
             .cloned()
             .unwrap_or(MirType::Unknown);
-        self.type_ctx.value_types
+        self.type_ctx
+            .value_types
             .insert(future_id, MirType::Future(Box::new(inner)));
-        self.variable_ctx.variable_map.insert(variable.clone(), future_id);
+        self.variable_ctx
+            .variable_map
+            .insert(variable.clone(), future_id);
         if let Some(reg) = self.comp_ctx.current_slot_registry.as_mut() {
             reg.ensure_slot(&variable, None);
         }
@@ -487,7 +495,9 @@ impl super::MirBuilder {
             "__me__".to_string()
         };
         let me_value = crate::mir::builder::emission::constant::emit_string(self, me_tag);
-        self.variable_ctx.variable_map.insert("me".to_string(), me_value);
+        self.variable_ctx
+            .variable_map
+            .insert("me".to_string(), me_value);
         if let Some(reg) = self.comp_ctx.current_slot_registry.as_mut() {
             reg.ensure_slot("me", None);
         }

src/mir/builder/utils.rs

@@ -149,7 +149,8 @@ impl super::MirBuilder {
                 // Second pass: update any user variables that pointed to old pin ids to the new ones
                 if !pin_renames.is_empty() {
                     let snapshot: Vec<(String, super::ValueId)> = self
-                        .variable_ctx.variable_map
+                        .variable_ctx
+                        .variable_map
                         .iter()
                         .filter(|(k, _)| !k.starts_with("__pin$"))
                         .map(|(k, &v)| (k.clone(), v))
@@ -316,7 +317,8 @@ impl super::MirBuilder {
             effects,
         })?;
         if let Some(d) = dst {
-            let mut recv_box: Option<String> = self.type_ctx.value_origin_newbox.get(&box_val).cloned();
+            let mut recv_box: Option<String> =
+                self.type_ctx.value_origin_newbox.get(&box_val).cloned();
             if recv_box.is_none() {
                 if let Some(t) = self.type_ctx.value_types.get(&box_val) {
                     match t {
@@ -327,7 +329,11 @@ impl super::MirBuilder {
                 }
             }
             if let Some(bt) = recv_box {
-                if let Some(mt) = self.comp_ctx.plugin_method_sigs.get(&(bt.clone(), method.clone())) {
+                if let Some(mt) = self
+                    .comp_ctx
+                    .plugin_method_sigs
+                    .get(&(bt.clone(), method.clone()))
+                {
                     self.type_ctx.value_types.insert(d, mt.clone());
                 } else {
                     // Phase 84-4-B: ビルトイン Box のメソッド戻り値型推論
@@ -489,7 +495,8 @@ impl super::MirBuilder {
         dst: super::ValueId,
         src: super::ValueId,
     ) -> Result<(), String> {
-        if let (Some(ref mut function), Some(bb)) = (&mut self.scope_ctx.current_function, self.current_block)
+        if let (Some(ref mut function), Some(bb)) =
+            (&mut self.scope_ctx.current_function, self.current_block)
         {
             if std::env::var("NYASH_SCHEDULE_TRACE").ok().as_deref() == Some("1") {
                 eprintln!(

src/mir/builder/vars/assignment_resolver.rs

@@ -26,4 +26,3 @@ impl AssignmentResolverBox {
         Err(msg)
     }
 }
-

src/mir/builder/vars/lexical_scope.rs

@@ -97,7 +97,9 @@ impl super::super::MirBuilder {
         }
 
         // Update both ValueId and BindingId mappings
-        self.variable_ctx.variable_map.insert(name.to_string(), value);
+        self.variable_ctx
+            .variable_map
+            .insert(name.to_string(), value);
 
         // Phase 74: Allocate and register new BindingId for this binding
         let binding_id = self.allocate_binding_id();

src/mir/join_ir/frontend/ast_lowerer/loop_patterns/break_pattern.rs

@@ -24,17 +24,15 @@ use super::common::{
     build_join_module, create_k_exit_function, create_loop_context, parse_program_json,
     process_local_inits,
 };
-use super::param_guess::{build_param_order, compute_param_guess};
 #[cfg(feature = "normalized_dev")]
 use super::if_sum_break_pattern;
+use super::param_guess::{build_param_order, compute_param_guess};
 use super::{AstToJoinIrLowerer, JoinModule, LoweringError};
 use crate::mir::join_ir::{JoinFunction, JoinInst};
 use crate::mir::ValueId;
 
 #[cfg(feature = "normalized_dev")]
-use crate::mir::join_ir::ownership::{
-    plan_to_p2_inputs_with_relay, OwnershipAnalyzer,
-};
+use crate::mir::join_ir::ownership::{plan_to_p2_inputs_with_relay, OwnershipAnalyzer};
 
 /// Break パターンを JoinModule に変換
 ///
@@ -217,7 +215,11 @@ fn compute_param_order_from_ownership(
         // Fallback: any loop plan with relay_writes
         .or_else(|| plans.iter().find(|p| !p.relay_writes.is_empty()))
         // Last resort: any plan that owns loop_var_name (loop-local case)
-        .or_else(|| plans.iter().find(|p| p.owned_vars.iter().any(|v| v.name == loop_var_name)))?;
+        .or_else(|| {
+            plans
+                .iter()
+                .find(|p| p.owned_vars.iter().any(|v| v.name == loop_var_name))
+        })?;
 
     let inputs = plan_to_p2_inputs_with_relay(loop_plan, loop_var_name).ok()?;
 
@@ -316,18 +318,19 @@ fn create_loop_step_function_break(
 
     let mut body = Vec::new();
 
-    let (loop_cond_var, loop_cond_insts) =
-        lowerer.extract_value(loop_cond_expr, &mut step_ctx);
+    let (loop_cond_var, loop_cond_insts) = lowerer.extract_value(loop_cond_expr, &mut step_ctx);
     body.extend(loop_cond_insts);
     let acc_current = step_ctx
         .get_var(acc_name)
         .unwrap_or_else(|| panic!("{} must be initialized", acc_name));
     let header_exit_flag = step_ctx.alloc_var();
-    body.push(JoinInst::Compute(crate::mir::join_ir::MirLikeInst::UnaryOp {
+    body.push(JoinInst::Compute(
+        crate::mir::join_ir::MirLikeInst::UnaryOp {
             dst: header_exit_flag,
             op: crate::mir::join_ir::UnaryOp::Not,
             operand: loop_cond_var,
-    }));
+        },
+    ));
     body.push(JoinInst::Jump {
         cont: ctx.k_exit_id.as_cont(),
         args: vec![acc_current],
@@ -398,9 +401,7 @@ fn create_loop_step_function_break(
     Ok(JoinFunction {
         id: ctx.loop_step_id,
         name: format!("{}_loop_step", func_name),
-        params: (0..param_names.len())
-            .map(|i| ValueId(i as u32))
-            .collect(),
+        params: (0..param_names.len()).map(|i| ValueId(i as u32)).collect(),
         body,
         exit_cont: None,
     })

src/mir/join_ir/frontend/ast_lowerer/loop_patterns/common.rs

@@ -12,8 +12,8 @@
 //! - `create_entry_function()`: entry 関数生成
 //! - `create_k_exit_function()`: k_exit 関数生成
 
-use super::{AstToJoinIrLowerer, JoinModule};
 use super::super::stmt_handlers::StatementEffect;
+use super::{AstToJoinIrLowerer, JoinModule};
 use crate::mir::join_ir::JoinIrPhase;
 use crate::mir::join_ir::{JoinFuncId, JoinFunction, JoinInst};
 use crate::mir::ValueId;
@@ -127,7 +127,10 @@ pub fn process_local_inits(
                 if let StatementEffect::VarUpdate { name, value_id } = effect {
                     ctx.register_param(name, value_id);
                 } else if matches!(effect, StatementEffect::SideEffect) {
-                    panic!("Unexpected side-effecting statement before Loop: {}", stmt_type);
+                    panic!(
+                        "Unexpected side-effecting statement before Loop: {}",
+                        stmt_type
+                    );
                 }
             }
             _ => panic!("Unexpected statement type before Loop: {}", stmt_type),

src/mir/join_ir/frontend/ast_lowerer/loop_patterns/continue_pattern.rs

@@ -205,7 +205,8 @@ fn create_loop_step_function_continue(
     // Phase 89-2: StepCalculator Box に抽出済み（再利用性向上）
 
     let mut i_next_continue = i_next;
-    let continue_then = continue_if_stmt["then"]
+    let continue_then =
+        continue_if_stmt["then"]
             .as_array()
             .ok_or_else(|| LoweringError::InvalidLoopBody {
                 message: "Continue pattern If must have 'then' array".to_string(),
@@ -283,10 +284,12 @@ fn create_loop_step_function_continue(
 
     // Phase 88: Continue 分岐側でも acc を更新できるようにする（例: acc += 1）
     let mut acc_then_val = step_acc;
-    if let Some(then_acc_local) = continue_then.iter().find(|stmt| {
-        stmt["type"].as_str() == Some("Local") && stmt["name"].as_str() == Some("acc")
-    }) {
-        let (acc_then, acc_then_insts) = lowerer.extract_value(&then_acc_local["expr"], &mut step_ctx);
+    if let Some(then_acc_local) = continue_then
+        .iter()
+        .find(|stmt| stmt["type"].as_str() == Some("Local") && stmt["name"].as_str() == Some("acc"))
+    {
+        let (acc_then, acc_then_insts) =
+            lowerer.extract_value(&then_acc_local["expr"], &mut step_ctx);
         body.extend(acc_then_insts);
         acc_then_val = acc_then;
     }

src/mir/join_ir/frontend/ast_lowerer/loop_patterns/continue_return_pattern.rs

@@ -128,7 +128,8 @@ pub fn lower(
     let return_if_stmt = return_if_stmts[0];
 
     // 5-2. Return が then にあることを確認（Fail-Fast）
-    let return_then = return_if_stmt["then"]
+    let return_then =
+        return_if_stmt["then"]
             .as_array()
             .ok_or_else(|| LoweringError::InvalidLoopBody {
                 message: "Return If must have 'then' array".to_string(),
@@ -318,7 +319,8 @@ fn create_loop_step_function_continue_return(
 
     // 3. Continue pattern: i のインクリメント処理
     // Continue If の then 内に i の更新がある場合、それを使う（例: i = i + 1）
-    let continue_then = continue_if_stmt["then"]
+    let continue_then =
+        continue_if_stmt["then"]
             .as_array()
             .ok_or_else(|| LoweringError::InvalidLoopBody {
                 message: "Continue If must have 'then' array".to_string(),
@@ -411,9 +413,7 @@ fn create_loop_step_function_continue_return(
     // 5. acc の更新値を計算（通常パス）
     let acc_update_local = loop_body
         .iter()
-        .find(|stmt| {
-            stmt["type"].as_str() == Some("Local") && stmt["name"].as_str() == Some("acc")
-        })
+        .find(|stmt| stmt["type"].as_str() == Some("Local") && stmt["name"].as_str() == Some("acc"))
         .ok_or_else(|| LoweringError::InvalidLoopBody {
             message: format!(
                 "ContinueReturn pattern validation failed: missing accumulator update.\n\
@@ -429,9 +429,10 @@ fn create_loop_step_function_continue_return(
 
     // Continue 分岐側でも acc を更新できる場合（例: acc += 1）
     let mut acc_then_val = step_acc;
-    if let Some(then_acc_local) = continue_then.iter().find(|stmt| {
-        stmt["type"].as_str() == Some("Local") && stmt["name"].as_str() == Some("acc")
-    }) {
+    if let Some(then_acc_local) = continue_then
+        .iter()
+        .find(|stmt| stmt["type"].as_str() == Some("Local") && stmt["name"].as_str() == Some("acc"))
+    {
         let (acc_then, acc_then_insts) =
             lowerer.extract_value(&then_acc_local["expr"], &mut step_ctx);
         body.extend(acc_then_insts);

src/mir/join_ir/frontend/ast_lowerer/loop_patterns/if_sum_break_pattern.rs

@@ -17,9 +17,9 @@ use super::common::{
     process_local_inits,
 };
 use super::{AstToJoinIrLowerer, JoinModule, LoweringError};
+use crate::mir::join_ir::ownership::{plan_to_p3_inputs_with_relay, OwnershipAnalyzer};
 use crate::mir::join_ir::{BinOpKind, JoinFunction, JoinInst, MirLikeInst};
 use crate::mir::ValueId;
-use crate::mir::join_ir::ownership::{plan_to_p3_inputs_with_relay, OwnershipAnalyzer};
 
 pub fn try_lower_if_sum_break(
     lowerer: &mut AstToJoinIrLowerer,
@@ -65,10 +65,7 @@ pub fn try_lower_if_sum_break(
         None => return Ok(None),
     };
 
-    let counter_update_stmt = loop_body
-        .last()
-        .expect("loop_body len checked")
-        .clone();
+    let counter_update_stmt = loop_body.last().expect("loop_body len checked").clone();
 
     let loop_var_name = detect_counter_update_loop_var(loop_body).ok_or_else(|| {
         LoweringError::InvalidLoopBody {
@@ -92,14 +89,17 @@ pub fn try_lower_if_sum_break(
     let loop_plan = plans
         .iter()
         .find(|p| p.relay_writes.iter().any(|r| r.name == loop_var_name))
-        .or_else(|| plans.iter().find(|p| p.owned_vars.iter().any(|v| v.name == loop_var_name)))
+        .or_else(|| {
+            plans
+                .iter()
+                .find(|p| p.owned_vars.iter().any(|v| v.name == loop_var_name))
+        })
         .ok_or_else(|| LoweringError::InvalidLoopBody {
             message: "if-sum-break: failed to find loop ownership plan".to_string(),
         })?;
 
-    let inputs = plan_to_p3_inputs_with_relay(loop_plan, &loop_var_name).map_err(|e| {
-        LoweringError::JsonParseError { message: e }
-    })?;
+    let inputs = plan_to_p3_inputs_with_relay(loop_plan, &loop_var_name)
+        .map_err(|e| LoweringError::JsonParseError { message: e })?;
 
     // Ensure carriers are exactly the return vars (fail-fast mixing protection).
     let carrier_names: std::collections::BTreeSet<String> =
@@ -119,16 +119,21 @@ pub fn try_lower_if_sum_break(
     let mut param_order: Vec<(String, ValueId)> = Vec::new();
     let mut seen = std::collections::BTreeSet::<String>::new();
 
-    let loop_var_id = entry_ctx
+    let loop_var_id =
+        entry_ctx
             .get_var(&loop_var_name)
             .ok_or_else(|| LoweringError::InvalidLoopBody {
-            message: format!("loop var '{}' must be initialized before loop", loop_var_name),
+                message: format!(
+                    "loop var '{}' must be initialized before loop",
+                    loop_var_name
+                ),
             })?;
     param_order.push((loop_var_name.clone(), loop_var_id));
     seen.insert(loop_var_name.clone());
 
     for carrier in &inputs.carriers {
-        let id = entry_ctx
+        let id =
+            entry_ctx
                 .get_var(&carrier.name)
                 .ok_or_else(|| LoweringError::InvalidLoopBody {
                     message: format!("carrier '{}' must be initialized before loop", carrier.name),
@@ -155,13 +160,8 @@ pub fn try_lower_if_sum_break(
         }
     }
 
-    let entry_func = create_entry_function_if_sum_break(
-        &ctx,
-        &parsed,
-        init_insts,
-        &mut entry_ctx,
-        &param_order,
-    );
+    let entry_func =
+        create_entry_function_if_sum_break(&ctx, &parsed, init_insts, &mut entry_ctx, &param_order);
 
     let loop_step_func = create_loop_step_function_if_sum_break(
         lowerer,
@@ -179,12 +179,14 @@ pub fn try_lower_if_sum_break(
 
     let k_exit_func = create_k_exit_function(&ctx, &parsed.func_name);
 
-    Ok(Some(build_join_module(entry_func, loop_step_func, k_exit_func)))
+    Ok(Some(build_join_module(
+        entry_func,
+        loop_step_func,
+        k_exit_func,
+    )))
 }
 
-fn parse_return_var_plus_var(
-    expr: Option<&serde_json::Value>,
-) -> Option<(String, String)> {
+fn parse_return_var_plus_var(expr: Option<&serde_json::Value>) -> Option<(String, String)> {
     let expr = expr?;
     if expr["type"].as_str()? != "Binary" {
         return None;
@@ -300,7 +302,8 @@ fn create_loop_step_function_if_sum_break(
         .ok_or_else(|| LoweringError::InvalidLoopBody {
             message: format!("{} must exist", sum_name),
         })?;
-    let count_before = step_ctx
+    let count_before =
+        step_ctx
             .get_var(count_name)
             .ok_or_else(|| LoweringError::InvalidLoopBody {
                 message: format!("{} must exist", count_name),
@@ -333,19 +336,14 @@ fn create_loop_step_function_if_sum_break(
         lowerer.extract_value(update_cond_expr, &mut step_ctx);
     body.extend(update_cond_insts);
 
-    let (sum_then_expr, sum_else_expr) =
-        extract_if_branch_assignment(update_if_stmt, sum_name)?;
+    let (sum_then_expr, sum_else_expr) = extract_if_branch_assignment(update_if_stmt, sum_name)?;
     let (count_then_expr, count_else_expr) =
         extract_if_branch_assignment(update_if_stmt, count_name)?;
 
-    let (sum_then_val, sum_then_insts) =
-        lowerer.extract_value(&sum_then_expr, &mut step_ctx);
-    let (sum_else_val, sum_else_insts) =
-        lowerer.extract_value(&sum_else_expr, &mut step_ctx);
-    let (count_then_val, count_then_insts) =
-        lowerer.extract_value(&count_then_expr, &mut step_ctx);
-    let (count_else_val, count_else_insts) =
-        lowerer.extract_value(&count_else_expr, &mut step_ctx);
+    let (sum_then_val, sum_then_insts) = lowerer.extract_value(&sum_then_expr, &mut step_ctx);
+    let (sum_else_val, sum_else_insts) = lowerer.extract_value(&sum_else_expr, &mut step_ctx);
+    let (count_then_val, count_then_insts) = lowerer.extract_value(&count_then_expr, &mut step_ctx);
+    let (count_else_val, count_else_insts) = lowerer.extract_value(&count_else_expr, &mut step_ctx);
     body.extend(sum_then_insts);
     body.extend(sum_else_insts);
     body.extend(count_then_insts);
@@ -370,10 +368,11 @@ fn create_loop_step_function_if_sum_break(
     step_ctx.register_param(count_name.to_string(), count_next);
 
     // Counter update (must update loop var)
-    let counter_expr = counter_update_stmt.get("expr").ok_or_else(|| {
-        LoweringError::InvalidLoopBody {
+    let counter_expr =
+        counter_update_stmt
+            .get("expr")
+            .ok_or_else(|| LoweringError::InvalidLoopBody {
                 message: "counter update must have 'expr'".to_string(),
-        }
             })?;
     let (i_next, i_insts) = lowerer.extract_value(counter_expr, &mut step_ctx);
     body.extend(i_insts);
@@ -401,9 +400,7 @@ fn create_loop_step_function_if_sum_break(
     Ok(JoinFunction {
         id: ctx.loop_step_id,
         name: format!("{}_loop_step", func_name),
-        params: (0..param_names.len())
-            .map(|i| ValueId(i as u32))
-            .collect(),
+        params: (0..param_names.len()).map(|i| ValueId(i as u32)).collect(),
         body,
         exit_cont: None,
     })
@@ -432,12 +429,18 @@ fn extract_if_branch_assignment(
     if_stmt: &serde_json::Value,
     target: &str,
 ) -> Result<(serde_json::Value, serde_json::Value), LoweringError> {
-    fn find_assignment_expr(branch: &[serde_json::Value], target: &str) -> Result<Option<serde_json::Value>, LoweringError> {
+    fn find_assignment_expr(
+        branch: &[serde_json::Value],
+        target: &str,
+    ) -> Result<Option<serde_json::Value>, LoweringError> {
         let mut found: Option<serde_json::Value> = None;
         for stmt in branch {
             match stmt["type"].as_str() {
                 Some("Local") => {
-                    let name = stmt["name"].as_str().ok_or_else(|| LoweringError::InvalidLoopBody {
+                    let name =
+                        stmt["name"]
+                            .as_str()
+                            .ok_or_else(|| LoweringError::InvalidLoopBody {
                                 message: "Local must have 'name'".to_string(),
                             })?;
                     if name != target {
@@ -448,13 +451,18 @@ fn extract_if_branch_assignment(
                             message: format!("if-sum-break: multiple assignments to '{}'", target),
                         });
                     }
-                    let expr = stmt.get("expr").ok_or_else(|| LoweringError::InvalidLoopBody {
+                    let expr = stmt
+                        .get("expr")
+                        .ok_or_else(|| LoweringError::InvalidLoopBody {
                             message: "Local must have 'expr'".to_string(),
                         })?;
                     found = Some(expr.clone());
                 }
                 Some("Assignment") | Some("Assign") => {
-                    let name = stmt["target"].as_str().ok_or_else(|| LoweringError::InvalidLoopBody {
+                    let name =
+                        stmt["target"]
+                            .as_str()
+                            .ok_or_else(|| LoweringError::InvalidLoopBody {
                                 message: "Assignment must have 'target'".to_string(),
                             })?;
                     if name != target {
@@ -465,10 +473,11 @@ fn extract_if_branch_assignment(
                             message: format!("if-sum-break: multiple assignments to '{}'", target),
                         });
                     }
-                    let expr = stmt.get("expr").or_else(|| stmt.get("value")).ok_or_else(|| {
-                        LoweringError::InvalidLoopBody {
+                    let expr = stmt
+                        .get("expr")
+                        .or_else(|| stmt.get("value"))
+                        .ok_or_else(|| LoweringError::InvalidLoopBody {
                             message: "Assignment must have 'expr' or 'value'".to_string(),
-                        }
                         })?;
                     found = Some(expr.clone());
                 }
@@ -493,11 +502,9 @@ fn extract_if_branch_assignment(
             message: "If must have 'else' array".to_string(),
         })?;
 
-    let then_expr = find_assignment_expr(then_branch, target)?.unwrap_or_else(|| {
-        serde_json::json!({"type":"Var","name":target})
-    });
-    let else_expr = find_assignment_expr(else_branch, target)?.unwrap_or_else(|| {
-        serde_json::json!({"type":"Var","name":target})
-    });
+    let then_expr = find_assignment_expr(then_branch, target)?
+        .unwrap_or_else(|| serde_json::json!({"type":"Var","name":target}));
+    let else_expr = find_assignment_expr(else_branch, target)?
+        .unwrap_or_else(|| serde_json::json!({"type":"Var","name":target}));
     Ok((then_expr, else_expr))
 }

src/mir/join_ir/frontend/ast_lowerer/loop_patterns/mod.rs

@@ -22,9 +22,9 @@ pub mod continue_return_pattern;
 pub mod filter;
 #[cfg(feature = "normalized_dev")]
 pub mod if_sum_break_pattern;
+pub mod param_guess;
 #[cfg(feature = "normalized_dev")]
 pub mod parse_string_composite_pattern;
-pub mod param_guess;
 pub mod print_tokens;
 pub mod simple;
 pub mod step_calculator;

src/mir/join_ir/frontend/ast_lowerer/loop_patterns/step_calculator.rs

@@ -103,7 +103,10 @@ mod tests {
             "lhs": {"type": "Var", "name": "i"},
             "rhs": {"type": "Int", "value": 2}
         });
-        assert_eq!(StepCalculator::extract_linear_increment(&expr, "i"), Some(2));
+        assert_eq!(
+            StepCalculator::extract_linear_increment(&expr, "i"),
+            Some(2)
+        );
     }
 
     #[test]
@@ -114,7 +117,10 @@ mod tests {
             "lhs": {"type": "Int", "value": 3},
             "rhs": {"type": "Var", "name": "i"}
         });
-        assert_eq!(StepCalculator::extract_linear_increment(&expr, "i"), Some(3));
+        assert_eq!(
+            StepCalculator::extract_linear_increment(&expr, "i"),
+            Some(3)
+        );
     }
 
     #[test]

src/mir/join_ir/frontend/ast_lowerer/mod.rs

@@ -87,15 +87,13 @@ impl AstToJoinIrLowerer {
             .as_str()
             .expect("Function must have 'name'");
 
-        let route = resolve_function_route(func_name)
-            .unwrap_or_else(|msg| panic!("{msg}"));
+        let route = resolve_function_route(func_name).unwrap_or_else(|msg| panic!("{msg}"));
 
         match route {
             FunctionRoute::IfReturn => self.lower_if_return_pattern(program_json),
-            FunctionRoute::LoopFrontend => loop_frontend_binding::lower_loop_by_function_name(
-                self,
-                program_json,
-            ),
+            FunctionRoute::LoopFrontend => {
+                loop_frontend_binding::lower_loop_by_function_name(self, program_json)
+            }
             FunctionRoute::NestedIf => self.lower_nested_if_pattern(program_json),
             FunctionRoute::ReadQuoted => self.lower_read_quoted_pattern(program_json),
         }

src/mir/join_ir/lowering/carrier_binding_assigner.rs

@@ -57,8 +57,8 @@
 //! // - carrier_info.carriers["is_digit_pos"].binding_id = Some(BindingId(10))
 //! ```
 
-use crate::mir::MirBuilder;
 use crate::mir::join_ir::lowering::carrier_info::CarrierInfo;
+use crate::mir::MirBuilder;
 
 #[derive(Debug)]
 pub enum CarrierBindingError {
@@ -87,9 +87,7 @@ impl CarrierBindingAssigner {
             Some(bid) => bid,
             None => {
                 let bid = builder.allocate_binding_id();
-                builder
-                    .binding_map
-                    .insert(original_name.to_string(), bid);
+                builder.binding_map.insert(original_name.to_string(), bid);
                 bid
             }
         };
@@ -189,14 +187,16 @@ mod tests {
 
     #[test]
     fn test_assign_promoted_binding_success() {
-        use crate::mir::join_ir::lowering::carrier_info::{CarrierVar, CarrierRole, CarrierInit};
+        use crate::mir::join_ir::lowering::carrier_info::{CarrierInit, CarrierRole, CarrierVar};
 
         // Create a MirBuilder with binding_map
         let mut builder = MirBuilder::new();
 
         // Add original binding to builder.binding_map
         let original_bid = builder.allocate_binding_id();
-        builder.binding_map.insert("digit_pos".to_string(), original_bid);
+        builder
+            .binding_map
+            .insert("digit_pos".to_string(), original_bid);
 
         // Create CarrierInfo with promoted carrier
         let mut carrier_info = CarrierInfo::with_carriers(
@@ -227,7 +227,11 @@ mod tests {
         assert!(promoted_bid.is_some());
 
         // Verify: carrier.binding_id was set
-        let carrier = carrier_info.carriers.iter().find(|c| c.name == "is_digit_pos").unwrap();
+        let carrier = carrier_info
+            .carriers
+            .iter()
+            .find(|c| c.name == "is_digit_pos")
+            .unwrap();
         assert_eq!(carrier.binding_id, promoted_bid);
     }
 
@@ -238,16 +242,18 @@ mod tests {
         // Create MirBuilder WITHOUT adding "digit_pos" to binding_map
         let mut builder = MirBuilder::new();
 
-        let mut carrier_info = CarrierInfo::with_carriers("test_loop".to_string(), ValueId(0), vec![
-            CarrierVar {
+        let mut carrier_info = CarrierInfo::with_carriers(
+            "test_loop".to_string(),
+            ValueId(0),
+            vec![CarrierVar {
                 name: "is_digit_pos".to_string(),
                 host_id: ValueId(0),
                 join_id: None,
                 role: CarrierRole::ConditionOnly,
                 init: CarrierInit::BoolConst(false),
                 binding_id: None,
-            },
-        ]);
+            }],
+        );
 
         // Should succeed (original/promoted BindingId are allocated on demand).
         let result = CarrierBindingAssigner::assign_promoted_binding(
@@ -270,12 +276,14 @@ mod tests {
 
     #[test]
     fn test_assign_promoted_binding_multiple_carriers() {
-        use crate::mir::join_ir::lowering::carrier_info::{CarrierVar, CarrierRole, CarrierInit};
+        use crate::mir::join_ir::lowering::carrier_info::{CarrierInit, CarrierRole, CarrierVar};
         let mut builder = MirBuilder::new();
 
         // Add two original bindings
         let digit_pos_bid = builder.allocate_binding_id();
-        builder.binding_map.insert("digit_pos".to_string(), digit_pos_bid);
+        builder
+            .binding_map
+            .insert("digit_pos".to_string(), digit_pos_bid);
 
         let ch_bid = builder.allocate_binding_id();
         builder.binding_map.insert("ch".to_string(), ch_bid);
@@ -309,24 +317,36 @@ mod tests {
             &mut carrier_info,
             "digit_pos",
             "is_digit_pos",
-        ).unwrap();
+        )
+        .unwrap();
 
         CarrierBindingAssigner::assign_promoted_binding(
             &mut builder,
             &mut carrier_info,
             "ch",
             "is_ch_match",
-        ).unwrap();
+        )
+        .unwrap();
 
         // Verify both mappings exist
-        assert!(carrier_info.resolve_promoted_with_binding(digit_pos_bid).is_some());
+        assert!(carrier_info
+            .resolve_promoted_with_binding(digit_pos_bid)
+            .is_some());
         assert!(carrier_info.resolve_promoted_with_binding(ch_bid).is_some());
 
         // Verify both carriers have binding_id set
-        let is_digit_pos = carrier_info.carriers.iter().find(|c| c.name == "is_digit_pos").unwrap();
+        let is_digit_pos = carrier_info
+            .carriers
+            .iter()
+            .find(|c| c.name == "is_digit_pos")
+            .unwrap();
         assert!(is_digit_pos.binding_id.is_some());
 
-        let is_ch_match = carrier_info.carriers.iter().find(|c| c.name == "is_ch_match").unwrap();
+        let is_ch_match = carrier_info
+            .carriers
+            .iter()
+            .find(|c| c.name == "is_ch_match")
+            .unwrap();
         assert!(is_ch_match.binding_id.is_some());
     }
 }

src/mir/join_ir/lowering/carrier_info.rs

@@ -649,7 +649,11 @@ impl CarrierInfo {
     /// don't have access to binding_map. Actual population happens in a future phase when
     /// we integrate BindingId tracking into the promotion pipeline.
     #[cfg(feature = "normalized_dev")]
-    pub fn record_promoted_binding(&mut self, original_binding: BindingId, promoted_binding: BindingId) {
+    pub fn record_promoted_binding(
+        &mut self,
+        original_binding: BindingId,
+        promoted_binding: BindingId,
+    ) {
         use super::debug_output_box::DebugOutputBox;
 
         // Phase 86: Use DebugOutputBox for consistent debug output
@@ -663,7 +667,8 @@ impl CarrierInfo {
                 original_binding, promoted_binding
             );
         }
-        self.promoted_bindings.insert(original_binding, promoted_binding);
+        self.promoted_bindings
+            .insert(original_binding, promoted_binding);
     }
 }
 

src/mir/join_ir/lowering/condition_env.rs

@@ -191,11 +191,7 @@ impl ConditionEnv {
     /// }
     /// ```
     #[cfg(feature = "normalized_dev")]
-    pub fn register_carrier_binding(
-        &mut self,
-        binding_id: BindingId,
-        join_value_id: ValueId,
-    ) {
+    pub fn register_carrier_binding(&mut self, binding_id: BindingId, join_value_id: ValueId) {
         self.binding_id_map.insert(binding_id, join_value_id);
     }
 
@@ -219,11 +215,7 @@ impl ConditionEnv {
     /// }
     /// ```
     #[cfg(feature = "normalized_dev")]
-    pub fn register_loop_var_binding(
-        &mut self,
-        binding_id: BindingId,
-        value_id: ValueId,
-    ) {
+    pub fn register_loop_var_binding(&mut self, binding_id: BindingId, value_id: ValueId) {
         self.binding_id_map.insert(binding_id, value_id);
     }
 
@@ -250,11 +242,7 @@ impl ConditionEnv {
     /// }
     /// ```
     #[cfg(feature = "normalized_dev")]
-    pub fn register_condition_binding(
-        &mut self,
-        binding_id: BindingId,
-        value_id: ValueId,
-    ) {
+    pub fn register_condition_binding(&mut self, binding_id: BindingId, value_id: ValueId) {
         self.binding_id_map.insert(binding_id, value_id);
     }
 
@@ -315,7 +303,10 @@ impl ConditionEnv {
             if let Some(&value_id) = self.binding_id_map.get(&bid) {
                 debug.log(
                     "hit",
-                    &format!("BindingId({}) -> ValueId({}) for '{}'", bid.0, value_id.0, name),
+                    &format!(
+                        "BindingId({}) -> ValueId({}) for '{}'",
+                        bid.0, value_id.0, name
+                    ),
                 );
                 return Some(value_id);
             } else {
@@ -330,7 +321,10 @@ impl ConditionEnv {
         } else {
             // Legacy: no BindingId, use name lookup
             let result = self.get(name);
-            debug.log("legacy", &format!("No BindingId, name '{}' -> {:?}", name, result));
+            debug.log(
+                "legacy",
+                &format!("No BindingId, name '{}' -> {:?}", name, result),
+            );
             return result;
         }
     }

src/mir/join_ir/lowering/condition_lowerer.rs

@@ -129,8 +129,7 @@ fn lower_comparison(
     alloc_value: &mut dyn FnMut() -> ValueId,
     env: &ConditionEnv,
     instructions: &mut Vec<JoinInst>,
-) -> Result<ValueId, String>
-{
+) -> Result<ValueId, String> {
     // Lower left and right sides
     let lhs = lower_value_expression(left, alloc_value, env, instructions)?;
     let rhs = lower_value_expression(right, alloc_value, env, instructions)?;
@@ -164,8 +163,7 @@ fn lower_logical_and(
     alloc_value: &mut dyn FnMut() -> ValueId,
     env: &ConditionEnv,
     instructions: &mut Vec<JoinInst>,
-) -> Result<ValueId, String>
-{
+) -> Result<ValueId, String> {
     // Logical AND: evaluate both sides and combine
     let lhs = lower_condition_recursive(left, alloc_value, env, instructions)?;
     let rhs = lower_condition_recursive(right, alloc_value, env, instructions)?;
@@ -189,8 +187,7 @@ fn lower_logical_or(
     alloc_value: &mut dyn FnMut() -> ValueId,
     env: &ConditionEnv,
     instructions: &mut Vec<JoinInst>,
-) -> Result<ValueId, String>
-{
+) -> Result<ValueId, String> {
     // Logical OR: evaluate both sides and combine
     let lhs = lower_condition_recursive(left, alloc_value, env, instructions)?;
     let rhs = lower_condition_recursive(right, alloc_value, env, instructions)?;
@@ -213,8 +210,7 @@ fn lower_not_operator(
     alloc_value: &mut dyn FnMut() -> ValueId,
     env: &ConditionEnv,
     instructions: &mut Vec<JoinInst>,
-) -> Result<ValueId, String>
-{
+) -> Result<ValueId, String> {
     let operand_val = lower_condition_recursive(operand, alloc_value, env, instructions)?;
     let dst = alloc_value();
 
@@ -233,8 +229,7 @@ fn lower_literal(
     value: &LiteralValue,
     alloc_value: &mut dyn FnMut() -> ValueId,
     instructions: &mut Vec<JoinInst>,
-) -> Result<ValueId, String>
-{
+) -> Result<ValueId, String> {
     let dst = alloc_value();
     let const_value = match value {
         LiteralValue::Integer(n) => ConstValue::Integer(*n),
@@ -322,8 +317,7 @@ fn lower_arithmetic_binop(
     alloc_value: &mut dyn FnMut() -> ValueId,
     env: &ConditionEnv,
     instructions: &mut Vec<JoinInst>,
-) -> Result<ValueId, String>
-{
+) -> Result<ValueId, String> {
     let lhs = lower_value_expression(left, alloc_value, env, instructions)?;
     let rhs = lower_value_expression(right, alloc_value, env, instructions)?;
     let dst = alloc_value();

src/mir/join_ir/lowering/condition_pattern.rs

@@ -49,8 +49,12 @@ fn is_if_sum_value_expr(expr: &ASTNode) -> bool {
     match expr {
         ASTNode::Variable { .. } | ASTNode::Literal { .. } => true,
         ASTNode::BinaryOp {
-            operator, left, right, ..
-        } => matches!(
+            operator,
+            left,
+            right,
+            ..
+        } => {
+            matches!(
                 operator,
                 BinaryOperator::Add
                     | BinaryOperator::Subtract
@@ -58,7 +62,8 @@ fn is_if_sum_value_expr(expr: &ASTNode) -> bool {
                     | BinaryOperator::Divide
                     | BinaryOperator::Modulo
             ) && is_if_sum_value_expr(left.as_ref())
-            && is_if_sum_value_expr(right.as_ref()),
+                && is_if_sum_value_expr(right.as_ref())
+        }
         _ => false,
     }
 }

src/mir/join_ir/lowering/expr_lowerer.rs

@@ -192,7 +192,11 @@ impl<'env, 'builder, S: ScopeManager> ExprLowerer<'env, 'builder, S> {
         // 2. Build ConditionEnv from ScopeManager
         // Phase 79-1: Use BindingId-aware version when available
         #[cfg(feature = "normalized_dev")]
-        let condition_env = scope_resolution::build_condition_env_from_scope_with_binding(self.scope, ast, self.builder)?;
+        let condition_env = scope_resolution::build_condition_env_from_scope_with_binding(
+            self.scope,
+            ast,
+            self.builder,
+        )?;
 
         #[cfg(not(feature = "normalized_dev"))]
         let condition_env = scope_resolution::build_condition_env_from_scope(self.scope, ast)?;
@@ -279,12 +283,16 @@ impl<'env, 'builder, S: ScopeManager> ConditionLoweringBox<S> for ExprLowerer<'e
 
         // Build ConditionEnv from the provided scope (the caller controls the scope + allocator).
         #[cfg(feature = "normalized_dev")]
-        let condition_env =
-            scope_resolution::build_condition_env_from_scope_with_binding(context.scope, condition, self.builder)
+        let condition_env = scope_resolution::build_condition_env_from_scope_with_binding(
+            context.scope,
+            condition,
+            self.builder,
+        )
         .map_err(|e| e.to_string())?;
 
         #[cfg(not(feature = "normalized_dev"))]
-        let condition_env = scope_resolution::build_condition_env_from_scope(context.scope, condition)
+        let condition_env =
+            scope_resolution::build_condition_env_from_scope(context.scope, condition)
                 .map_err(|e| e.to_string())?;
 
         // Delegate to the well-tested lowerer, but use the caller-provided allocator (SSOT).

src/mir/join_ir/lowering/expr_lowerer/scope_resolution.rs

@@ -1,8 +1,8 @@
 use super::{ExprLoweringError, ScopeManager};
 use crate::ast::ASTNode;
-use crate::mir::join_ir::lowering::condition_env::ConditionEnv;
 #[cfg(feature = "normalized_dev")]
 use crate::mir::builder::MirBuilder;
+use crate::mir::join_ir::lowering::condition_env::ConditionEnv;
 
 /// Phase 79-1: Build ConditionEnv with BindingId support (dev-only)
 ///

src/mir/join_ir/lowering/loop_to_join/case_a_entrypoints.rs

@@ -70,4 +70,3 @@ impl LoopToJoinLowerer {
         )
     }
 }
-

src/mir/join_ir/lowering/loop_to_join/core.rs

@@ -108,9 +108,10 @@ impl LoopToJoinLowerer {
         }
 
         if !generic_case_a_enabled() {
-            if !func_name
-                .map_or(false, super::super::loop_scope_shape::is_case_a_minimal_target)
-            {
+            if !func_name.map_or(
+                false,
+                super::super::loop_scope_shape::is_case_a_minimal_target,
+            ) {
                 if self.debug {
                     eprintln!(
                         "[LoopToJoinLowerer] rejected by name filter (generic disabled): {:?}",
@@ -163,4 +164,3 @@ mod tests {
         assert!(!lowerer.debug || lowerer.debug);
     }
 }
-

src/mir/join_ir/lowering/loop_to_join/mod.rs

@@ -12,8 +12,7 @@
 //! - Phase 進捗ログはここに混ぜない（現役の導線のみ）。
 //! - “とりあえず通す”フォールバックは増やさない。失敗は `None` で上位に返す。
 
-mod core;
 mod case_a_entrypoints;
+mod core;
 
 pub use core::LoopToJoinLowerer;
-

src/mir/join_ir/lowering/loop_with_break_minimal.rs

@@ -261,9 +261,7 @@ pub(crate) fn lower_loop_with_break_minimal(
         "[joinir/pattern2] Phase 201: loop_step params - i_param={:?}, carrier_params={:?}",
         i_param, carrier_param_ids
     );
-    if crate::config::env::joinir_dev_enabled()
-        || crate::config::env::joinir_test_debug_enabled()
-    {
+    if crate::config::env::joinir_dev_enabled() || crate::config::env::joinir_test_debug_enabled() {
         eprintln!(
             "[joinir/pattern2/debug] loop_var='{}' env.get(loop_var)={:?}, carriers={:?}",
             loop_var_name,
@@ -668,7 +666,9 @@ pub(crate) fn lower_loop_with_break_minimal(
             Pattern2StepKind::Updates => loop_step_func.body.append(&mut carrier_update_block),
             Pattern2StepKind::Tail => loop_step_func.body.append(&mut tail_block),
             // Phase 47-A: P3 steps not used in P2 lowering (handled in Pattern3 lowerer)
-            Pattern2StepKind::IfCond | Pattern2StepKind::ThenUpdates | Pattern2StepKind::ElseUpdates => {
+            Pattern2StepKind::IfCond
+            | Pattern2StepKind::ThenUpdates
+            | Pattern2StepKind::ElseUpdates => {
                 panic!("Pattern3 step kinds should not appear in Pattern2 lowering");
             }
             // Phase 48-A: P4 steps not used in P2 lowering (handled in Pattern4 lowerer)

src/mir/join_ir/lowering/loop_with_continue_minimal.rs

@@ -126,7 +126,9 @@ pub(crate) fn lower_loop_with_continue_minimal(
     carrier_info: &CarrierInfo,
     carrier_updates: &BTreeMap<String, UpdateExpr>, // Phase 222.5-D: HashMap → BTreeMap for determinism
     join_value_space: &mut JoinValueSpace,
-    #[cfg(feature = "normalized_dev")] binding_map: Option<&std::collections::BTreeMap<String, crate::mir::BindingId>>,
+    #[cfg(feature = "normalized_dev")] binding_map: Option<
+        &std::collections::BTreeMap<String, crate::mir::BindingId>,
+    >,
 ) -> Result<(JoinModule, ExitMeta), String> {
     // Phase 170-D-impl-3: Validate that loop condition only uses supported variable scopes
     // LoopConditionScopeBox checks that loop conditions don't reference loop-body-local variables

src/mir/join_ir/lowering/mod.rs

@@ -25,8 +25,6 @@ pub mod carrier_info; // Phase 196: Carrier metadata for loop lowering
 pub(crate) mod carrier_update_emitter; // Phase 179: Carrier update instruction emission
 pub(crate) mod common; // Internal lowering utilities
 pub mod complex_addend_normalizer; // Phase 192: Complex addend normalization (AST preprocessing)
-pub mod debug_output_box; // Phase 85: Centralized debug output management
-pub mod error_tags; // Phase 86: Centralized error message formatting
 pub mod condition_env; // Phase 171-fix: Condition expression environment
 pub(crate) mod condition_lowerer; // Phase 171-fix: Core condition lowering logic
 pub mod condition_lowering_box; // Phase 244: Unified condition lowering interface (trait-based)
@@ -34,7 +32,9 @@ pub mod condition_pattern; // Phase 219-fix: If condition pattern detection (sim
 pub mod condition_to_joinir; // Phase 169: JoinIR condition lowering orchestrator (refactored)
 pub(crate) mod condition_var_extractor; // Phase 171-fix: Variable extraction from condition AST
 pub mod continue_branch_normalizer; // Phase 33-19: Continue branch normalization for Pattern B
+pub mod debug_output_box; // Phase 85: Centralized debug output management
 pub mod digitpos_condition_normalizer; // Phase 224-E: DigitPos condition normalizer (digit_pos < 0 → !is_digit_pos)
+pub mod error_tags; // Phase 86: Centralized error message formatting
 pub(crate) mod exit_args_resolver; // Internal exit argument resolution
 pub mod expr_lowerer; // Phase 231: Unified expression lowering with scope management
 pub mod funcscanner_append_defs;
@@ -64,11 +64,11 @@ pub(crate) mod loop_view_builder; // Phase 33-23: Loop lowering dispatch
 pub mod loop_with_break_minimal; // Phase 188-Impl-2: Pattern 2 minimal lowerer
 pub mod loop_with_continue_minimal;
 pub mod method_call_lowerer; // Phase 224-B: MethodCall lowering (metadata-driven)
-pub(crate) mod step_schedule; // Phase 47-A: Generic step scheduler for P2/P3 (renamed from pattern2_step_schedule)
 pub mod method_return_hint; // Phase 83: P3-D 既知メソッド戻り値型推論箱
 pub mod scope_manager; // Phase 231: Unified variable scope management // Phase 195: Pattern 4 minimal lowerer
 #[cfg(feature = "normalized_dev")]
-pub mod scope_manager_bindingid_poc; // Phase 73: BindingId-based scope PoC (dev-only)
+pub mod scope_manager_bindingid_poc;
+pub(crate) mod step_schedule; // Phase 47-A: Generic step scheduler for P2/P3 (renamed from pattern2_step_schedule) // Phase 73: BindingId-based scope PoC (dev-only)
                                                                                                                     // Phase 242-EX-A: loop_with_if_phi_minimal removed - replaced by loop_with_if_phi_if_sum
 pub mod loop_with_if_phi_if_sum; // Phase 213: Pattern 3 AST-based if-sum lowerer (Phase 242-EX-A: supports complex conditions)
 pub mod min_loop;

src/mir/join_ir/lowering/scope_manager.rs

@@ -274,7 +274,10 @@ impl<'a> ScopeManager for Pattern2ScopeManager<'a> {
             if let Some(value_id) = self.condition_env.resolve_var_with_binding(Some(bid), name) {
                 debug.log(
                     "direct",
-                    &format!("BindingId({}) -> ValueId({}) for '{}'", bid.0, value_id.0, name),
+                    &format!(
+                        "BindingId({}) -> ValueId({}) for '{}'",
+                        bid.0, value_id.0, name
+                    ),
                 );
                 return Some(value_id);
             }
@@ -282,7 +285,10 @@ impl<'a> ScopeManager for Pattern2ScopeManager<'a> {
             // Step 2: **NEW (Phase 76)**: Check promoted_bindings map
             if let Some(promoted_bid) = self.carrier_info.resolve_promoted_with_binding(bid) {
                 // Promoted BindingId found, lookup in ConditionEnv
-                if let Some(value_id) = self.condition_env.resolve_var_with_binding(Some(promoted_bid), name) {
+                if let Some(value_id) = self
+                    .condition_env
+                    .resolve_var_with_binding(Some(promoted_bid), name)
+                {
                     debug.log(
                         "promoted",
                         &format!(
@@ -304,7 +310,10 @@ impl<'a> ScopeManager for Pattern2ScopeManager<'a> {
             #[cfg(not(feature = "normalized_dev"))]
             debug.log(
                 "fallback",
-                &format!("BindingId({}) miss, falling back to name '{}' lookup", bid.0, name),
+                &format!(
+                    "BindingId({}) miss, falling back to name '{}' lookup",
+                    bid.0, name
+                ),
             );
         }
 

src/mir/join_ir/lowering/scope_manager_bindingid_poc/mod.rs

@@ -225,7 +225,10 @@ mod tests {
         let promoted = BindingId(10);
         carrier_info.add_promoted_binding(original, promoted);
 
-        assert_eq!(carrier_info.resolve_promoted_binding(original), Some(promoted));
+        assert_eq!(
+            carrier_info.resolve_promoted_binding(original),
+            Some(promoted)
+        );
         assert_eq!(carrier_info.resolve_promoted_binding(BindingId(99)), None);
     }
 

src/mir/join_ir/lowering/simple_while_minimal.rs

@@ -193,7 +193,9 @@ pub(crate) fn lower_simple_while_minimal(
     // Phase 188-Impl-1-E: Use Print instruction
     loop_step_func
         .body
-        .push(JoinInst::Compute(MirLikeInst::Print { value: i_step_param }));
+        .push(JoinInst::Compute(MirLikeInst::Print {
+            value: i_step_param,
+        }));
 
     // i_next = i + 1
     // Step 1: const 1

src/mir/join_ir/lowering/step_schedule.rs

@@ -189,12 +189,7 @@ mod tests {
         } else {
             CarrierInit::FromHost
         };
-        CarrierVar::with_role_and_init(
-            "c".to_string(),
-            ValueId(1),
-            CarrierRole::LoopState,
-            init,
-        )
+        CarrierVar::with_role_and_init("c".to_string(), ValueId(1), CarrierRole::LoopState, init)
     }
 
     fn carrier_info(carriers: Vec<CarrierVar>) -> CarrierInfo {
@@ -249,8 +244,7 @@ mod tests {
 
     #[test]
     fn loop_local_carrier_triggers_body_first() {
-        let ctx =
-            Pattern2ScheduleContext::from_env(None, &carrier_info(vec![carrier(true)]));
+        let ctx = Pattern2ScheduleContext::from_env(None, &carrier_info(vec![carrier(true)]));
         let schedule = build_pattern2_schedule(&ctx);
         assert_eq!(
             schedule.steps(),

src/mir/join_ir/normalized.rs

@@ -15,13 +15,13 @@ use std::collections::HashMap;
 #[cfg(feature = "normalized_dev")]
 use std::panic::{catch_unwind, AssertUnwindSafe};
 
-#[cfg(feature = "normalized_dev")]
-pub mod fixtures;
 #[cfg(feature = "normalized_dev")]
 pub mod dev_env;
 #[cfg(feature = "normalized_dev")]
 pub mod dev_fixtures;
 #[cfg(feature = "normalized_dev")]
+pub mod fixtures;
+#[cfg(feature = "normalized_dev")]
 pub mod loop_step_inspector;
 #[cfg(feature = "normalized_dev")]
 pub mod shape_guard;
@@ -97,7 +97,10 @@ pub enum JpOp {
     BinOp(BinOpKind),
     Unary(UnaryOp),
     Compare(CompareOp),
-    BoxCall { box_name: String, method: String },
+    BoxCall {
+        box_name: String,
+        method: String,
+    },
     /// 三項演算子（cond ? then : else）
     Select,
 }
@@ -462,13 +465,11 @@ pub fn normalize_pattern2_minimal(structured: &JoinModule) -> NormalizedModule {
                     cond,
                     then_val,
                     else_val,
-                }) => {
-                    body.push(JpInst::Let {
+                }) => body.push(JpInst::Let {
                     dst: *dst,
                     op: JpOp::Select,
                     args: vec![*cond, *then_val, *else_val],
-                    })
-                }
+                }),
                 JoinInst::Jump { cont, args, cond } => {
                     if let Some(cond_val) = cond {
                         body.push(JpInst::If {
@@ -497,7 +498,9 @@ pub fn normalize_pattern2_minimal(structured: &JoinModule) -> NormalizedModule {
                         args: vec![*cond, *then_val, *else_val],
                     });
                 }
-                JoinInst::Call { func, args, k_next, .. } => {
+                JoinInst::Call {
+                    func, args, k_next, ..
+                } => {
                     if k_next.is_none() {
                         body.push(JpInst::TailCallFn {
                             target: JpFuncId(func.0),
@@ -620,9 +623,7 @@ pub fn normalize_pattern3_if_sum_json_minimal(
 
 /// Phase 50: selfhost if-sum P3 を Normalized に載せる（dev-only）。
 #[cfg(feature = "normalized_dev")]
-pub fn normalize_selfhost_if_sum_p3(
-    structured: &JoinModule,
-) -> Result<NormalizedModule, String> {
+pub fn normalize_selfhost_if_sum_p3(structured: &JoinModule) -> Result<NormalizedModule, String> {
     normalize_pattern3_if_sum_shape(structured, NormalizedDevShape::SelfhostIfSumP3)
 }
 
@@ -769,9 +770,7 @@ pub fn normalized_pattern2_to_structured(norm: &NormalizedModule) -> JoinModule
                         op: *op,
                         operand: args.get(0).copied().unwrap_or(ValueId(0)),
                     })),
-                    JpOp::Select => func
-                        .body
-                        .push(JoinInst::Compute(MirLikeInst::Select {
+                    JpOp::Select => func.body.push(JoinInst::Compute(MirLikeInst::Select {
                         dst: *dst,
                         cond: args.get(0).copied().unwrap_or(ValueId(0)),
                         then_val: args.get(1).copied().unwrap_or(ValueId(0)),
@@ -832,9 +831,7 @@ fn verify_normalized_pattern2(
     max_env_fields: usize,
 ) -> Result<(), String> {
     if module.phase != JoinIrPhase::Normalized {
-        return Err(
-            "[joinir/normalized-dev] pattern2: phase must be Normalized".to_string(),
-        );
+        return Err("[joinir/normalized-dev] pattern2: phase must be Normalized".to_string());
     }
 
     let mut layout_sizes: HashMap<u32, usize> = HashMap::new();
@@ -871,10 +868,8 @@ fn verify_normalized_pattern2(
                 | JpInst::If { env, .. } => {
                     if let Some(expected) = expected_env_len {
                         if env.is_empty() {
-                            return Err(
-                                "[joinir/normalized-dev] pattern2: env must not be empty"
-                                    .to_string(),
-                            );
+                            return Err("[joinir/normalized-dev] pattern2: env must not be empty"
+                                .to_string());
                         }
                         let _ = expected;
                     }
@@ -885,9 +880,7 @@ fn verify_normalized_pattern2(
 
         if let Some(last) = func.body.last() {
             match last {
-                JpInst::TailCallFn { .. }
-                | JpInst::TailCallKont { .. }
-                | JpInst::If { .. } => {}
+                JpInst::TailCallFn { .. } | JpInst::TailCallKont { .. } | JpInst::If { .. } => {}
                 _ => {
                     return Err(format!(
                         "[joinir/normalized-dev] pattern2: function '{}' does not end with tail call/if",
@@ -1069,7 +1062,9 @@ pub(crate) fn normalized_dev_roundtrip_structured(
 
     let shapes = shape_guard::supported_shapes(module);
     if shapes.is_empty() {
-        return Err("[joinir/normalized-dev] module shape is not supported by normalized_dev".into());
+        return Err(
+            "[joinir/normalized-dev] module shape is not supported by normalized_dev".into(),
+        );
     }
 
     let debug = dev_env::normalized_dev_logs_enabled() && crate::config::env::joinir_dev_enabled();
@@ -1092,15 +1087,15 @@ pub(crate) fn normalized_dev_roundtrip_structured(
             | NormalizedDevShape::JsonparserSkipWsReal
             | NormalizedDevShape::JsonparserAtoiMini
             | NormalizedDevShape::JsonparserAtoiReal
-            | NormalizedDevShape::JsonparserParseNumberReal => catch_unwind(AssertUnwindSafe(
-                || {
+            | NormalizedDevShape::JsonparserParseNumberReal => {
+                catch_unwind(AssertUnwindSafe(|| {
                     let norm = normalize_pattern2_minimal(module);
                     normalized_pattern2_to_structured(&norm)
-                },
-            )),
+                }))
+            }
             NormalizedDevShape::SelfhostTokenScanP2 => catch_unwind(AssertUnwindSafe(|| {
-                let norm =
-                    normalize_selfhost_token_scan_p2(module).expect("selfhost P2 normalization failed");
+                let norm = normalize_selfhost_token_scan_p2(module)
+                    .expect("selfhost P2 normalization failed");
                 normalized_pattern2_to_structured(&norm)
             })),
             NormalizedDevShape::SelfhostTokenScanP2Accum => catch_unwind(AssertUnwindSafe(|| {
@@ -1110,8 +1105,8 @@ pub(crate) fn normalized_dev_roundtrip_structured(
             })),
             // Phase 47-A: P3 minimal (delegates to P2 for now, but uses proper guard)
             NormalizedDevShape::Pattern3IfSumMinimal => catch_unwind(AssertUnwindSafe(|| {
-                let norm = normalize_pattern3_if_sum_minimal(module)
-                    .expect("P3 normalization failed");
+                let norm =
+                    normalize_pattern3_if_sum_minimal(module).expect("P3 normalization failed");
                 normalized_pattern2_to_structured(&norm)
             })),
             NormalizedDevShape::Pattern3IfSumMulti => catch_unwind(AssertUnwindSafe(|| {
@@ -1125,8 +1120,8 @@ pub(crate) fn normalized_dev_roundtrip_structured(
                 normalized_pattern2_to_structured(&norm)
             })),
             NormalizedDevShape::SelfhostIfSumP3 => catch_unwind(AssertUnwindSafe(|| {
-                let norm = normalize_selfhost_if_sum_p3(module)
-                    .expect("selfhost P3 normalization failed");
+                let norm =
+                    normalize_selfhost_if_sum_p3(module).expect("selfhost P3 normalization failed");
                 normalized_pattern2_to_structured(&norm)
             })),
             NormalizedDevShape::SelfhostIfSumP3Ext => catch_unwind(AssertUnwindSafe(|| {
@@ -1156,36 +1151,38 @@ pub(crate) fn normalized_dev_roundtrip_structured(
             })),
             // Phase 48-A: P4 minimal (delegates to P2 for now, but uses proper guard)
             NormalizedDevShape::Pattern4ContinueMinimal => catch_unwind(AssertUnwindSafe(|| {
-                let norm = normalize_pattern4_continue_minimal(module)
-                    .expect("P4 normalization failed");
+                let norm =
+                    normalize_pattern4_continue_minimal(module).expect("P4 normalization failed");
                 normalized_pattern2_to_structured(&norm)
             })),
             NormalizedDevShape::JsonparserParseArrayContinueSkipWs => {
                 catch_unwind(AssertUnwindSafe(|| {
-                    let norm =
-                        normalize_jsonparser_parse_array_continue_skip_ws(module)
+                    let norm = normalize_jsonparser_parse_array_continue_skip_ws(module)
                         .expect("P4 array normalization failed");
                     normalized_pattern2_to_structured(&norm)
                 }))
             }
             NormalizedDevShape::JsonparserParseObjectContinueSkipWs => {
                 catch_unwind(AssertUnwindSafe(|| {
-                    let norm =
-                        normalize_jsonparser_parse_object_continue_skip_ws(module)
+                    let norm = normalize_jsonparser_parse_object_continue_skip_ws(module)
                         .expect("P4 object normalization failed");
                     normalized_pattern2_to_structured(&norm)
                 }))
             }
             // Phase 89: Continue + Early Return pattern (dev-only, delegates to P2 for now)
-            NormalizedDevShape::PatternContinueReturnMinimal => catch_unwind(AssertUnwindSafe(|| {
+            NormalizedDevShape::PatternContinueReturnMinimal => {
+                catch_unwind(AssertUnwindSafe(|| {
                     let norm = normalize_pattern2_minimal(module);
                     normalized_pattern2_to_structured(&norm)
-            })),
+                }))
+            }
             // Phase 90: Parse String Composite pattern (dev-only, delegates to P2 for now)
-            NormalizedDevShape::ParseStringCompositeMinimal => catch_unwind(AssertUnwindSafe(|| {
+            NormalizedDevShape::ParseStringCompositeMinimal => {
+                catch_unwind(AssertUnwindSafe(|| {
                     let norm = normalize_pattern2_minimal(module);
                     normalized_pattern2_to_structured(&norm)
-            })),
+                }))
+            }
         };
 
         match attempt {

src/mir/join_ir/normalized/dev_fixtures.rs

@@ -132,8 +132,8 @@ impl NormalizedDevFixture {
         use super::super::frontend::ast_lowerer::AstToJoinIrLowerer;
 
         let fixture_json = self.fixture_content();
-        let program_json: serde_json::Value = serde_json::from_str(fixture_json)
-            .unwrap_or_else(|e| {
+        let program_json: serde_json::Value =
+            serde_json::from_str(fixture_json).unwrap_or_else(|e| {
                 panic!(
                     "{} fixture should be valid JSON: {}",
                     self.function_name(),
@@ -165,11 +165,12 @@ mod tests {
     #[test]
     fn test_all_fixtures_have_unique_names() {
         use std::collections::HashSet;
-        let names: HashSet<_> = ALL_DEV_FIXTURES
-            .iter()
-            .map(|f| f.function_name())
-            .collect();
-        assert_eq!(names.len(), ALL_DEV_FIXTURES.len(), "Fixture names must be unique");
+        let names: HashSet<_> = ALL_DEV_FIXTURES.iter().map(|f| f.function_name()).collect();
+        assert_eq!(
+            names.len(),
+            ALL_DEV_FIXTURES.len(),
+            "Fixture names must be unique"
+        );
     }
 
     #[test]

src/mir/join_ir/normalized/fixtures.rs

@@ -24,7 +24,12 @@ fn const_i64(func: &mut JoinFunction, dst: ValueId, value: i64) {
 }
 
 fn compare(func: &mut JoinFunction, dst: ValueId, op: CompareOp, lhs: ValueId, rhs: ValueId) {
-    func.body.push(JoinInst::Compute(MirLikeInst::Compare { dst, op, lhs, rhs }));
+    func.body.push(JoinInst::Compute(MirLikeInst::Compare {
+        dst,
+        op,
+        lhs,
+        rhs,
+    }));
 }
 
 fn unary_not(func: &mut JoinFunction, dst: ValueId, operand: ValueId) {
@@ -44,7 +49,13 @@ fn bin_add(func: &mut JoinFunction, dst: ValueId, lhs: ValueId, rhs: ValueId) {
     }));
 }
 
-fn select(func: &mut JoinFunction, dst: ValueId, cond: ValueId, then_val: ValueId, else_val: ValueId) {
+fn select(
+    func: &mut JoinFunction,
+    dst: ValueId,
+    cond: ValueId,
+    then_val: ValueId,
+    else_val: ValueId,
+) {
     func.body.push(JoinInst::Compute(MirLikeInst::Select {
         dst,
         cond,
@@ -165,8 +176,8 @@ pub fn build_jsonparser_skip_ws_real_structured_for_normalized_dev() -> JoinModu
         "../../../../docs/private/roadmap2/phases/normalized_dev/fixtures/jsonparser_skip_ws_real.program.json"
     );
 
-    let program_json: serde_json::Value =
-        serde_json::from_str(FIXTURE).expect("jsonparser skip_ws real fixture should be valid JSON");
+    let program_json: serde_json::Value = serde_json::from_str(FIXTURE)
+        .expect("jsonparser skip_ws real fixture should be valid JSON");
 
     let mut lowerer = AstToJoinIrLowerer::new();
     let module = lowerer.lower_program_json(&program_json);
@@ -189,8 +200,8 @@ pub fn build_jsonparser_parse_number_real_structured_for_normalized_dev() -> Joi
         "../../../../docs/private/roadmap2/phases/normalized_dev/fixtures/jsonparser_parse_number_real.program.json"
     );
 
-    let program_json: serde_json::Value =
-        serde_json::from_str(FIXTURE).expect("jsonparser parse_number real fixture should be valid JSON");
+    let program_json: serde_json::Value = serde_json::from_str(FIXTURE)
+        .expect("jsonparser parse_number real fixture should be valid JSON");
 
     let mut lowerer = AstToJoinIrLowerer::new();
     let module = lowerer.lower_program_json(&program_json);
@@ -319,13 +330,7 @@ pub fn build_pattern3_if_sum_multi_min_structured_for_normalized_dev() -> JoinMo
     let cond_cmp = alloc();
     let zero_const = alloc();
     const_i64(&mut loop_step, zero_const, 0);
-    compare(
-        &mut loop_step,
-        cond_cmp,
-        CompareOp::Gt,
-        i_param,
-        zero_const,
-    );
+    compare(&mut loop_step, cond_cmp, CompareOp::Gt, i_param, zero_const);
 
     // then: sum = sum + 1, count = count + 1
     let one_const = alloc();
@@ -415,15 +420,14 @@ pub fn build_pattern3_json_if_sum_min_structured_for_normalized_dev() -> JoinMod
     // loop_step params: i, sum
     let i_param = alloc();
     let sum_param = alloc();
-    let mut loop_step = JoinFunction::new(loop_id, "loop_step".to_string(), vec![i_param, sum_param]);
+    let mut loop_step =
+        JoinFunction::new(loop_id, "loop_step".to_string(), vec![i_param, sum_param]);
 
     // loop condition: i < 5
     let limit_const = alloc();
     let cmp_loop = alloc();
     let exit_cond = alloc();
-    loop_step
-        .body
-        .push(JoinInst::Compute(MirLikeInst::Const {
+    loop_step.body.push(JoinInst::Compute(MirLikeInst::Const {
         dst: limit_const,
         value: ConstValue::Integer(5),
     }));
@@ -445,13 +449,7 @@ pub fn build_pattern3_json_if_sum_min_structured_for_normalized_dev() -> JoinMod
     let cond_cmp = alloc();
     let zero_const = alloc();
     const_i64(&mut loop_step, zero_const, 0);
-    compare(
-        &mut loop_step,
-        cond_cmp,
-        CompareOp::Gt,
-        i_param,
-        zero_const,
-    );
+    compare(&mut loop_step, cond_cmp, CompareOp::Gt, i_param, zero_const);
 
     // then: sum = sum + i
     let sum_then = alloc();
@@ -524,8 +522,8 @@ pub fn build_selfhost_if_sum_p3_ext_structured_for_normalized_dev() -> JoinModul
         "../../../../docs/private/roadmap2/phases/normalized_dev/fixtures/selfhost_if_sum_p3_ext.program.json"
     );
 
-    let program_json: serde_json::Value = serde_json::from_str(FIXTURE)
-        .expect("selfhost if_sum P3 ext fixture should be valid JSON");
+    let program_json: serde_json::Value =
+        serde_json::from_str(FIXTURE).expect("selfhost if_sum P3 ext fixture should be valid JSON");
 
     let mut lowerer = AstToJoinIrLowerer::new();
     let module = lowerer.lower_program_json(&program_json);
@@ -548,8 +546,8 @@ pub fn build_selfhost_args_parse_p2_structured_for_normalized_dev() -> JoinModul
         "../../../../docs/private/roadmap2/phases/normalized_dev/fixtures/selfhost_args_parse_p2.program.json"
     );
 
-    let program_json: serde_json::Value = serde_json::from_str(FIXTURE)
-        .expect("selfhost args_parse P2 fixture should be valid JSON");
+    let program_json: serde_json::Value =
+        serde_json::from_str(FIXTURE).expect("selfhost args_parse P2 fixture should be valid JSON");
 
     let mut lowerer = AstToJoinIrLowerer::new();
     let module = lowerer.lower_program_json(&program_json);
@@ -572,8 +570,8 @@ pub fn build_selfhost_stmt_count_p3_structured_for_normalized_dev() -> JoinModul
         "../../../../docs/private/roadmap2/phases/normalized_dev/fixtures/selfhost_stmt_count_p3.program.json"
     );
 
-    let program_json: serde_json::Value = serde_json::from_str(FIXTURE)
-        .expect("selfhost stmt_count P3 fixture should be valid JSON");
+    let program_json: serde_json::Value =
+        serde_json::from_str(FIXTURE).expect("selfhost stmt_count P3 fixture should be valid JSON");
 
     let mut lowerer = AstToJoinIrLowerer::new();
     let module = lowerer.lower_program_json(&program_json);
@@ -679,18 +677,9 @@ pub fn build_pattern3_if_sum_min_structured_for_normalized_dev() -> JoinModule {
     let loop_condition = bin(BinaryOperator::Less, var("i"), int_lit(3));
     let if_condition = bin(BinaryOperator::Greater, var("i"), int_lit(0));
 
-    let then_update = assignment(
-        var("sum"),
-        bin(BinaryOperator::Add, var("sum"), int_lit(1)),
-    );
-    let else_update = assignment(
-        var("sum"),
-        bin(BinaryOperator::Add, var("sum"), int_lit(0)),
-    );
-    let counter_update = assignment(
-        var("i"),
-        bin(BinaryOperator::Add, var("i"), int_lit(1)),
-    );
+    let then_update = assignment(var("sum"), bin(BinaryOperator::Add, var("sum"), int_lit(1)));
+    let else_update = assignment(var("sum"), bin(BinaryOperator::Add, var("sum"), int_lit(0)));
+    let counter_update = assignment(var("i"), bin(BinaryOperator::Add, var("i"), int_lit(1)));
 
     let if_stmt = ASTNode::If {
         condition: Box::new(if_condition),
@@ -707,8 +696,13 @@ pub fn build_pattern3_if_sum_min_structured_for_normalized_dev() -> JoinModule {
     let i_id = join_value_space.alloc_param();
     cond_env.insert("i".to_string(), i_id);
 
-    let (module, _meta) =
-        lower_if_sum_pattern(&loop_condition, &if_stmt, &body, &cond_env, &mut join_value_space)
+    let (module, _meta) = lower_if_sum_pattern(
+        &loop_condition,
+        &if_stmt,
+        &body,
+        &cond_env,
+        &mut join_value_space,
+    )
     .expect("if-sum lowering should succeed for minimal pattern3");
 
     if joinir_dev_enabled() && joinir_test_debug_enabled() {
@@ -743,7 +737,8 @@ pub fn build_jsonparser_parse_array_continue_skip_ws_structured_for_normalized_d
 /// JsonParser _parse_object の whitespace continue ループを Structured で組み立てるヘルパー（dev-only）。
 ///
 /// Fixture: docs/private/roadmap2/phases/normalized_dev/fixtures/jsonparser_parse_object_continue_skip_ws.program.json
-pub fn build_jsonparser_parse_object_continue_skip_ws_structured_for_normalized_dev() -> JoinModule {
+pub fn build_jsonparser_parse_object_continue_skip_ws_structured_for_normalized_dev() -> JoinModule
+{
     use super::dev_fixtures::NormalizedDevFixture;
     NormalizedDevFixture::Pattern4JsonParserParseObjectContinueSkipWs.load_and_lower()
 }
@@ -818,15 +813,15 @@ pub mod prelude {
         build_jsonparser_skip_ws_real_structured_for_normalized_dev,
         build_jsonparser_skip_ws_structured_for_normalized_dev,
         build_jsonparser_unescape_string_step2_min_structured_for_normalized_dev,
+        build_parse_array_min_structured_for_normalized_dev,
+        build_parse_object_min_structured_for_normalized_dev,
+        build_parse_string_composite_min_structured_for_normalized_dev,
         build_pattern2_break_fixture_structured, build_pattern2_minimal_structured,
         build_pattern3_if_sum_min_structured_for_normalized_dev,
         build_pattern3_if_sum_multi_min_structured_for_normalized_dev,
         build_pattern3_json_if_sum_min_structured_for_normalized_dev,
         build_pattern4_continue_min_structured_for_normalized_dev,
         build_pattern_continue_return_min_structured_for_normalized_dev,
-        build_parse_string_composite_min_structured_for_normalized_dev,
-        build_parse_array_min_structured_for_normalized_dev,
-        build_parse_object_min_structured_for_normalized_dev,
         build_selfhost_if_sum_p3_ext_structured_for_normalized_dev,
         build_selfhost_if_sum_p3_structured_for_normalized_dev,
         build_selfhost_token_scan_p2_accum_structured_for_normalized_dev,

src/mir/join_ir/normalized/loop_step_inspector.rs

@@ -29,12 +29,10 @@ impl LoopStepInspector {
     ///
     /// ループ条件や continue/break 判定で使用される。
     pub fn has_compare_instruction(loop_step_func: &JoinFunction) -> bool {
-        loop_step_func.body.iter().any(|inst| {
-            matches!(
-                inst,
-                JoinInst::Compute(MirLikeInst::Compare { .. })
-            )
-        })
+        loop_step_func
+            .body
+            .iter()
+            .any(|inst| matches!(inst, JoinInst::Compute(MirLikeInst::Compare { .. })))
     }
 
     /// 条件付き Jump の個数をカウント
@@ -77,10 +75,7 @@ mod tests {
     use super::*;
     use crate::mir::join_ir::{JoinFuncId, VarId};
 
-    fn make_dummy_loop_step(
-        body: Vec<JoinInst>,
-        param_count: usize,
-    ) -> JoinFunction {
+    fn make_dummy_loop_step(body: Vec<JoinInst>, param_count: usize) -> JoinFunction {
         let params: Vec<_> = (0..param_count).map(|i| VarId(i as u32)).collect();
         JoinFunction {
             id: JoinFuncId(1),
@@ -105,7 +100,9 @@ mod tests {
         assert!(LoopStepInspector::has_select_instruction(&func_with_select));
 
         let func_without_select = make_dummy_loop_step(vec![], 2);
-        assert!(!LoopStepInspector::has_select_instruction(&func_without_select));
+        assert!(!LoopStepInspector::has_select_instruction(
+            &func_without_select
+        ));
     }
 
     #[test]
@@ -160,10 +157,20 @@ mod tests {
 
     #[test]
     fn test_has_reasonable_param_count() {
-        assert!(!LoopStepInspector::has_reasonable_param_count(&make_dummy_loop_step(vec![], 1)));
-        assert!(LoopStepInspector::has_reasonable_param_count(&make_dummy_loop_step(vec![], 2)));
-        assert!(LoopStepInspector::has_reasonable_param_count(&make_dummy_loop_step(vec![], 3)));
-        assert!(LoopStepInspector::has_reasonable_param_count(&make_dummy_loop_step(vec![], 4)));
-        assert!(!LoopStepInspector::has_reasonable_param_count(&make_dummy_loop_step(vec![], 5)));
+        assert!(!LoopStepInspector::has_reasonable_param_count(
+            &make_dummy_loop_step(vec![], 1)
+        ));
+        assert!(LoopStepInspector::has_reasonable_param_count(
+            &make_dummy_loop_step(vec![], 2)
+        ));
+        assert!(LoopStepInspector::has_reasonable_param_count(
+            &make_dummy_loop_step(vec![], 3)
+        ));
+        assert!(LoopStepInspector::has_reasonable_param_count(
+            &make_dummy_loop_step(vec![], 4)
+        ));
+        assert!(!LoopStepInspector::has_reasonable_param_count(
+            &make_dummy_loop_step(vec![], 5)
+        ));
     }
 }

src/mir/join_ir/normalized/shape_guard.rs

@@ -37,7 +37,6 @@ pub enum ShapeCapabilityKind {
 
     /// Selfhost P3 if-sum family
     SelfhostP3IfSum,
-
     // Future: Other P2 patterns
     // P2MidAtOfLoop,
     // P2HeavyString,
@@ -100,8 +99,14 @@ pub enum NormalizedDevShape {
 type Detector = fn(&JoinModule) -> bool;
 
 const SHAPE_DETECTORS: &[(NormalizedDevShape, Detector)] = &[
-    (NormalizedDevShape::Pattern1Mini, detectors::is_pattern1_mini),
-    (NormalizedDevShape::Pattern2Mini, detectors::is_pattern2_mini),
+    (
+        NormalizedDevShape::Pattern1Mini,
+        detectors::is_pattern1_mini,
+    ),
+    (
+        NormalizedDevShape::Pattern2Mini,
+        detectors::is_pattern2_mini,
+    ),
     (
         NormalizedDevShape::JsonparserSkipWsMini,
         detectors::is_jsonparser_skip_ws_mini,
@@ -552,18 +557,16 @@ mod detectors {
 
         let has_select = loop_func.body.iter().any(|inst| match inst {
             JoinInst::Select { .. } => true,
-            JoinInst::Compute(mir_inst) => matches!(
-                mir_inst,
-                crate::mir::join_ir::MirLikeInst::Select { .. }
-            ),
+            JoinInst::Compute(mir_inst) => {
+                matches!(mir_inst, crate::mir::join_ir::MirLikeInst::Select { .. })
+            }
             _ => false,
         });
 
         let has_boxcall = loop_func.body.iter().any(|inst| match inst {
-            JoinInst::Compute(mir_inst) => matches!(
-                mir_inst,
-                crate::mir::join_ir::MirLikeInst::BoxCall { .. }
-            ),
+            JoinInst::Compute(mir_inst) => {
+                matches!(mir_inst, crate::mir::join_ir::MirLikeInst::BoxCall { .. })
+            }
             _ => false,
         });
 
@@ -601,8 +604,7 @@ mod detectors {
             .iter()
             .any(|inst| matches!(inst, JoinInst::Call { k_next: None, .. }));
 
-        let param_set: std::collections::BTreeSet<_> =
-            loop_step.params.iter().copied().collect();
+        let param_set: std::collections::BTreeSet<_> = loop_step.params.iter().copied().collect();
 
         let has_ge_compare_between_params = loop_step.body.iter().any(|inst| match inst {
             JoinInst::Compute(mir_inst) => match mir_inst {
@@ -617,10 +619,9 @@ mod detectors {
         });
 
         let has_boxcall = loop_step.body.iter().any(|inst| match inst {
-            JoinInst::Compute(mir_inst) => matches!(
-                mir_inst,
-                crate::mir::join_ir::MirLikeInst::BoxCall { .. }
-            ),
+            JoinInst::Compute(mir_inst) => {
+                matches!(mir_inst, crate::mir::join_ir::MirLikeInst::BoxCall { .. })
+            }
             _ => false,
         });
 
@@ -667,10 +668,9 @@ mod detectors {
         // Phase 220: Select can be either JoinInst::Select or Compute(MirLikeInst::Select)
         let has_select = loop_step.body.iter().any(|inst| match inst {
             JoinInst::Select { .. } => true,
-            JoinInst::Compute(mir_inst) => matches!(
-                mir_inst,
-                crate::mir::join_ir::MirLikeInst::Select { .. }
-            ),
+            JoinInst::Compute(mir_inst) => {
+                matches!(mir_inst, crate::mir::join_ir::MirLikeInst::Select { .. })
+            }
             _ => false,
         });
 
@@ -993,8 +993,12 @@ mod detectors {
                     // Check if rhs is a const value 2 (indicating i+=2 for escape)
                     // We need to check if rhs points to a Const instruction with value 2
                     loop_step.body.iter().any(|other_inst| match other_inst {
-                        JoinInst::Compute(crate::mir::join_ir::MirLikeInst::Const { dst, value }) => {
-                            dst == rhs && matches!(value, crate::mir::join_ir::ConstValue::Integer(2))
+                        JoinInst::Compute(crate::mir::join_ir::MirLikeInst::Const {
+                            dst,
+                            value,
+                        }) => {
+                            dst == rhs
+                                && matches!(value, crate::mir::join_ir::ConstValue::Integer(2))
                         }
                         _ => false,
                     })
@@ -1171,7 +1175,9 @@ mod tests {
             shapes
         );
         assert!(
-            !shapes.iter().any(|s| matches!(s, NormalizedDevShape::Pattern3IfSumMinimal)),
+            !shapes
+                .iter()
+                .any(|s| matches!(s, NormalizedDevShape::Pattern3IfSumMinimal)),
             "selfhost_if_sum_p3 should not rely on canonical P3 minimal detection: {:?}",
             shapes
         );
@@ -1286,7 +1292,9 @@ mod tests {
                     k_next: None,
                     dst: Some(ValueId(2)),
                 },
-                JoinInst::Ret { value: Some(ValueId(2)) },
+                JoinInst::Ret {
+                    value: Some(ValueId(2)),
+                },
             ],
             exit_cont: None,
         };
@@ -1348,7 +1356,9 @@ mod tests {
                     k_next: None,
                     dst: Some(ValueId(40)),
                 },
-                JoinInst::Ret { value: Some(ValueId(40)) },
+                JoinInst::Ret {
+                    value: Some(ValueId(40)),
+                },
             ],
             exit_cont: None,
         };
@@ -1358,7 +1368,9 @@ mod tests {
             id: JoinFuncId::new(2),
             name: "k_exit".to_string(),
             params: vec![ValueId(0)],
-            body: vec![JoinInst::Ret { value: Some(ValueId(0)) }],
+            body: vec![JoinInst::Ret {
+                value: Some(ValueId(0)),
+            }],
             exit_cont: None,
         };
 

src/mir/join_ir/ownership/analyzer.rs

@@ -77,7 +77,9 @@ impl OwnershipAnalyzer {
                 return Err("OwnershipAnalyzer: no FunctionDef found in 'defs'".to_string());
             }
         } else {
-            return Err("OwnershipAnalyzer: expected top-level 'functions' or 'defs' array".to_string());
+            return Err(
+                "OwnershipAnalyzer: expected top-level 'functions' or 'defs' array".to_string(),
+            );
         }
 
         // Convert ScopeInfo to OwnershipPlan
@@ -87,7 +89,9 @@ impl OwnershipAnalyzer {
     fn alloc_scope(&mut self, kind: ScopeKind, parent: Option<ScopeId>) -> ScopeId {
         let id = ScopeId(self.next_scope_id);
         self.next_scope_id += 1;
-        self.scopes.insert(id, ScopeInfo {
+        self.scopes.insert(
+            id,
+            ScopeInfo {
                 id,
                 kind,
                 parent,
@@ -95,18 +99,27 @@ impl OwnershipAnalyzer {
                 reads: BTreeSet::new(),
                 writes: BTreeSet::new(),
                 condition_reads: BTreeSet::new(),
-        });
+            },
+        );
         id
     }
 
-    fn analyze_function(&mut self, func: &Value, parent: Option<ScopeId>) -> Result<ScopeId, String> {
+    fn analyze_function(
+        &mut self,
+        func: &Value,
+        parent: Option<ScopeId>,
+    ) -> Result<ScopeId, String> {
         let scope_id = self.alloc_scope(ScopeKind::Function, parent);
 
         // Collect function parameters as defined
         if let Some(params) = func.get("params").and_then(|p| p.as_array()) {
             for param in params {
                 if let Some(name) = param.as_str() {
-                    self.scopes.get_mut(&scope_id).unwrap().defined.insert(name.to_string());
+                    self.scopes
+                        .get_mut(&scope_id)
+                        .unwrap()
+                        .defined
+                        .insert(name.to_string());
                 }
             }
         }
@@ -156,7 +169,11 @@ impl OwnershipAnalyzer {
             }
             "Assign" | "Assignment" => {
                 if let Some(target) = stmt.get("target").and_then(|t| t.as_str()) {
-                    self.scopes.get_mut(&current_scope).unwrap().writes.insert(target.to_string());
+                    self.scopes
+                        .get_mut(&current_scope)
+                        .unwrap()
+                        .writes
+                        .insert(target.to_string());
                 }
                 if let Some(value) = stmt.get("value").or_else(|| stmt.get("expr")) {
                     self.analyze_expression(value, current_scope, false)?;
@@ -234,7 +251,12 @@ impl OwnershipAnalyzer {
         Ok(())
     }
 
-    fn analyze_expression(&mut self, expr: &Value, current_scope: ScopeId, is_condition: bool) -> Result<(), String> {
+    fn analyze_expression(
+        &mut self,
+        expr: &Value,
+        current_scope: ScopeId,
+        is_condition: bool,
+    ) -> Result<(), String> {
         let kind = expr
             .get("kind")
             .or_else(|| expr.get("type"))
@@ -372,8 +394,11 @@ impl OwnershipAnalyzer {
             // owned_vars: defined in this scope
             for name in &scope.defined {
                 let is_written = scope.writes.contains(name);
-                let is_condition_only = scope.condition_reads.contains(name) &&
-                                        !scope.writes.iter().any(|w| w == name && !scope.condition_reads.contains(w));
+                let is_condition_only = scope.condition_reads.contains(name)
+                    && !scope
+                        .writes
+                        .iter()
+                        .any(|w| w == name && !scope.condition_reads.contains(w));
 
                 plan.owned_vars.push(ScopeOwnedVar {
                     name: name.clone(),
@@ -530,10 +555,15 @@ mod tests {
 
         // Find the loop plan
         let loop_plan = plans.iter().find(|p| {
-            p.relay_writes.iter().any(|r| r.name == "sum" || r.name == "i")
+            p.relay_writes
+                .iter()
+                .any(|r| r.name == "sum" || r.name == "i")
         });
 
-        assert!(loop_plan.is_some(), "Should have a loop plan with relay writes");
+        assert!(
+            loop_plan.is_some(),
+            "Should have a loop plan with relay writes"
+        );
         let loop_plan = loop_plan.unwrap();
 
         // sum and i are written in loop but owned by function -> relay_writes
@@ -576,15 +606,19 @@ mod tests {
         let plans = analyzer.analyze_json(&json).unwrap();
 
         // Find loop plan
-        let loop_plan = plans.iter().find(|p| {
-            p.owned_vars.iter().any(|v| v.name == "count")
-        });
+        let loop_plan = plans
+            .iter()
+            .find(|p| p.owned_vars.iter().any(|v| v.name == "count"));
 
         assert!(loop_plan.is_some(), "Loop should own 'count'");
         let loop_plan = loop_plan.unwrap();
 
         // count is owned AND written -> carrier
-        let count_var = loop_plan.owned_vars.iter().find(|v| v.name == "count").unwrap();
+        let count_var = loop_plan
+            .owned_vars
+            .iter()
+            .find(|v| v.name == "count")
+            .unwrap();
         assert!(count_var.is_written, "count should be marked as written");
 
         // No relay for count (it's owned)
@@ -631,9 +665,9 @@ mod tests {
         let plans = analyzer.analyze_json(&json).unwrap();
 
         // Find loop plan
-        let loop_plan = plans.iter().find(|p| {
-            p.captures.iter().any(|c| c.name == "limit")
-        });
+        let loop_plan = plans
+            .iter()
+            .find(|p| p.captures.iter().any(|c| c.name == "limit"));
 
         assert!(loop_plan.is_some(), "Loop should capture 'limit'");
         let loop_plan = loop_plan.unwrap();
@@ -642,7 +676,10 @@ mod tests {
         assert!(loop_plan.captures.iter().any(|c| c.name == "limit"));
 
         // limit should also be in condition_captures
-        assert!(loop_plan.condition_captures.iter().any(|c| c.name == "limit"));
+        assert!(loop_plan
+            .condition_captures
+            .iter()
+            .any(|c| c.name == "limit"));
 
         // limit is NOT in relay_writes (not written)
         assert!(!loop_plan.relay_writes.iter().any(|r| r.name == "limit"));
@@ -687,9 +724,9 @@ mod tests {
         let plans = analyzer.analyze_json(&json).unwrap();
 
         // At least one loop should relay total
-        let any_relay = plans.iter().any(|p| {
-            p.relay_writes.iter().any(|r| r.name == "total")
-        });
+        let any_relay = plans
+            .iter()
+            .any(|p| p.relay_writes.iter().any(|r| r.name == "total"));
 
         assert!(any_relay, "Some loop should relay 'total' to function");
     }

src/mir/join_ir/ownership/mod.rs

@@ -26,20 +26,20 @@
 //! - Phase 59: plan_to_lowering helper for P3 (if-sum patterns)
 //! - Phase 71-Pre: plan_validator box (reusable validation)
 
-mod types;
 mod analyzer;
 #[cfg(feature = "normalized_dev")]
-mod plan_to_lowering;
-#[cfg(feature = "normalized_dev")]
 mod ast_analyzer;
 #[cfg(feature = "normalized_dev")]
-mod plan_validator;
-
-pub use types::*;
-pub use analyzer::*;
+mod plan_to_lowering;
 #[cfg(feature = "normalized_dev")]
-pub use plan_to_lowering::*;
+mod plan_validator;
+mod types;
+
+pub use analyzer::*;
 #[cfg(feature = "normalized_dev")]
 pub use ast_analyzer::*;
 #[cfg(feature = "normalized_dev")]
+pub use plan_to_lowering::*;
+#[cfg(feature = "normalized_dev")]
 pub use plan_validator::*;
+pub use types::*;

src/mir/join_ir/ownership/plan_to_lowering.rs

@@ -34,15 +34,15 @@ pub struct P3LoweringInputs {
 /// # Errors
 /// Returns Err if relay_writes is non-empty (Phase 58 scope limitation).
 #[cfg(feature = "normalized_dev")]
-pub fn plan_to_p2_inputs(
-    plan: &OwnershipPlan,
-    loop_var: &str,
-) -> Result<P2LoweringInputs, String> {
+pub fn plan_to_p2_inputs(plan: &OwnershipPlan, loop_var: &str) -> Result<P2LoweringInputs, String> {
     // Fail-Fast: relay_writes not supported in Phase 58
     if !plan.relay_writes.is_empty() {
         return Err(format!(
             "Phase 58 limitation: relay_writes not yet supported. Found: {:?}",
-            plan.relay_writes.iter().map(|r| &r.name).collect::<Vec<_>>()
+            plan.relay_writes
+                .iter()
+                .map(|r| &r.name)
+                .collect::<Vec<_>>()
         ));
     }
 
@@ -206,15 +206,15 @@ pub fn plan_to_p2_inputs_with_relay(
 /// # Errors
 /// Returns Err if relay_writes is non-empty (Phase 59 scope limitation).
 #[cfg(feature = "normalized_dev")]
-pub fn plan_to_p3_inputs(
-    plan: &OwnershipPlan,
-    loop_var: &str,
-) -> Result<P3LoweringInputs, String> {
+pub fn plan_to_p3_inputs(plan: &OwnershipPlan, loop_var: &str) -> Result<P3LoweringInputs, String> {
     // Fail-Fast: relay_writes not supported in Phase 59
     if !plan.relay_writes.is_empty() {
         return Err(format!(
             "Phase 59 limitation: relay_writes not yet supported for P3. Found: {:?}",
-            plan.relay_writes.iter().map(|r| &r.name).collect::<Vec<_>>()
+            plan.relay_writes
+                .iter()
+                .map(|r| &r.name)
+                .collect::<Vec<_>>()
         ));
     }
 
@@ -382,7 +382,8 @@ mod tests {
             relay_path: vec![ScopeId(1), ScopeId(2)], // L3 → L2 → L1
         });
 
-        let inputs = plan_to_p2_inputs_with_relay(&plan, "i").expect("Phase 66: multihop should be accepted");
+        let inputs = plan_to_p2_inputs_with_relay(&plan, "i")
+            .expect("Phase 66: multihop should be accepted");
         assert_eq!(inputs.carriers.len(), 1);
         assert_eq!(inputs.carriers[0].name, "counter");
         assert_eq!(inputs.carriers[0].role, CarrierRole::LoopState);
@@ -433,7 +434,9 @@ mod tests {
 
         let result = plan_to_p2_inputs_with_relay(&plan, "i");
         assert!(result.is_err());
-        assert!(result.unwrap_err().contains("relay cannot be owned by same scope"));
+        assert!(result
+            .unwrap_err()
+            .contains("relay cannot be owned by same scope"));
     }
 
     #[test]
@@ -454,7 +457,9 @@ mod tests {
 
         let result = plan_to_p2_inputs_with_relay(&plan, "i");
         assert!(result.is_err());
-        assert!(result.unwrap_err().contains("appears in both owned_vars and relay_writes"));
+        assert!(result
+            .unwrap_err()
+            .contains("appears in both owned_vars and relay_writes"));
     }
 
     #[test]
@@ -546,8 +551,7 @@ mod tests {
     fn test_p3_five_plus_carriers() {
         // Selfhost P3 pattern: 5+ carriers
         let mut plan = OwnershipPlan::new(ScopeId(1));
-        plan.owned_vars
-            .push(ScopeOwnedVar {
+        plan.owned_vars.push(ScopeOwnedVar {
             name: "i".to_string(),
             is_written: true,
             is_condition_only: false,

src/mir/join_ir/ownership/types.rs

@@ -82,7 +82,9 @@ impl OwnershipPlan {
 
     /// Get condition-only carriers (owned, written, condition-only).
     pub fn condition_only_carriers(&self) -> impl Iterator<Item = &ScopeOwnedVar> {
-        self.owned_vars.iter().filter(|v| v.is_written && v.is_condition_only)
+        self.owned_vars
+            .iter()
+            .filter(|v| v.is_written && v.is_condition_only)
     }
 
     /// Check invariant: no variable appears in multiple categories.

src/mir/join_ir/verify_phi_reserved.rs

@@ -59,9 +59,7 @@ pub fn disable_observation() {
 /// Analyze PHI dst distribution
 #[cfg(debug_assertions)]
 pub fn analyze_distribution(observations: &[u32]) -> PhiDistributionReport {
-    use crate::mir::join_ir::lowering::join_value_space::{
-        PHI_RESERVED_MAX, PARAM_MIN, LOCAL_MIN,
-    };
+    use crate::mir::join_ir::lowering::join_value_space::{LOCAL_MIN, PARAM_MIN, PHI_RESERVED_MAX};
 
     let mut in_reserved = 0;
     let mut in_param = 0;

src/mir/join_ir_runner.rs

@@ -32,11 +32,9 @@ use std::collections::HashMap;
 
 #[cfg(feature = "normalized_dev")]
 use crate::config::env::joinir_dev::{current_joinir_mode, JoinIrMode};
-use crate::mir::join_ir::{ConstValue, JoinFuncId, JoinInst, JoinModule, MirLikeInst, VarId};
 #[cfg(feature = "normalized_dev")]
-use crate::mir::join_ir::normalized::{
-    dev_env, normalized_dev_roundtrip_structured, shape_guard,
-};
+use crate::mir::join_ir::normalized::{dev_env, normalized_dev_roundtrip_structured, shape_guard};
+use crate::mir::join_ir::{ConstValue, JoinFuncId, JoinInst, JoinModule, MirLikeInst, VarId};
 
 // Phase 27.8: ops box からの再エクスポート
 pub use crate::mir::join_ir_ops::{JoinIrOpError, JoinValue};
@@ -104,7 +102,9 @@ fn run_joinir_function_normalized_dev(
         let shapes = shape_guard::supported_shapes(module);
         if shapes.is_empty() {
             if debug {
-                eprintln!("[joinir/normalized-dev/runner] shape unsupported; staying on Structured path");
+                eprintln!(
+                    "[joinir/normalized-dev/runner] shape unsupported; staying on Structured path"
+                );
             }
             return execute_function(vm, module, entry, args_vec);
         }

src/mir/join_ir_vm_bridge/bridge.rs

@@ -7,13 +7,13 @@ use std::collections::BTreeMap;
 #[cfg(feature = "normalized_dev")]
 use crate::config::env::joinir_dev::{current_joinir_mode, JoinIrMode};
 #[cfg(feature = "normalized_dev")]
-use crate::mir::join_ir::JoinIrPhase;
+use crate::mir::join_ir::normalized::shape_guard::{self, NormalizedDevShape};
 #[cfg(feature = "normalized_dev")]
 use crate::mir::join_ir::normalized::{
     normalize_pattern1_minimal, normalize_pattern2_minimal, NormalizedModule,
 };
 #[cfg(feature = "normalized_dev")]
-use crate::mir::join_ir::normalized::shape_guard::{self, NormalizedDevShape};
+use crate::mir::join_ir::JoinIrPhase;
 #[cfg(feature = "normalized_dev")]
 use crate::mir::join_ir_vm_bridge::lower_normalized_to_mir_minimal;
 #[cfg(feature = "normalized_dev")]
@@ -124,22 +124,22 @@ fn normalize_for_shape(
                 .expect("P4 normalization failed")
         })),
         // Phase 48-B: JsonParser continue skip_ws (array/object)
-        NormalizedDevShape::JsonparserParseArrayContinueSkipWs => catch_unwind(AssertUnwindSafe(
-            || {
+        NormalizedDevShape::JsonparserParseArrayContinueSkipWs => {
+            catch_unwind(AssertUnwindSafe(|| {
                 crate::mir::join_ir::normalized::normalize_jsonparser_parse_array_continue_skip_ws(
                     module,
                 )
                 .expect("P4 array normalization failed")
-            },
-        )),
-        NormalizedDevShape::JsonparserParseObjectContinueSkipWs => catch_unwind(AssertUnwindSafe(
-            || {
+            }))
+        }
+        NormalizedDevShape::JsonparserParseObjectContinueSkipWs => {
+            catch_unwind(AssertUnwindSafe(|| {
                 crate::mir::join_ir::normalized::normalize_jsonparser_parse_object_continue_skip_ws(
                     module,
                 )
                 .expect("P4 object normalization failed")
-            },
-        )),
+            }))
+        }
         // Phase 89: Continue + Early Return pattern (dev-only, delegates to P2 for now)
         NormalizedDevShape::PatternContinueReturnMinimal => {
             catch_unwind(AssertUnwindSafe(|| normalize_pattern2_minimal(module)))

src/mir/join_ir_vm_bridge/joinir_block_converter.rs

@@ -72,7 +72,10 @@ impl JoinIrBlockConverter {
                         continue;
                     }
                     // Debug: show what instruction we're processing
-                    log_dbg(format!("[joinir_block] Compute instruction: {:?}", mir_like));
+                    log_dbg(format!(
+                        "[joinir_block] Compute instruction: {:?}",
+                        mir_like
+                    ));
                     let mir_inst = convert_mir_like_inst(mir_like)?;
                     self.current_instructions.push(mir_inst);
                 }

src/mir/join_ir_vm_bridge/mod.rs

@@ -55,9 +55,9 @@ pub(crate) use bridge::{bridge_joinir_to_mir, bridge_joinir_to_mir_with_meta};
 pub(crate) use convert::convert_joinir_to_mir;
 pub(crate) use convert::convert_mir_like_inst; // helper for sub-modules
 pub(crate) use joinir_function_converter::JoinIrFunctionConverter;
+pub use meta::convert_join_module_to_mir_with_meta;
 #[cfg(feature = "normalized_dev")]
 pub(crate) use normalized_bridge::lower_normalized_to_mir_minimal;
-pub use meta::convert_join_module_to_mir_with_meta;
 pub use runner::run_joinir_via_vm;
 
 /// Phase 27-shortterm S-4 エラー型

src/mir/join_ir_vm_bridge/normalized_bridge.rs

@@ -19,7 +19,11 @@ fn dev_debug_enabled() -> bool {
 pub(super) fn log_dev(category: &str, message: impl AsRef<str>, important: bool) {
     let debug = dev_debug_enabled();
     if debug || important {
-        eprintln!("[joinir/normalized-dev/bridge/{}] {}", category, message.as_ref());
+        eprintln!(
+            "[joinir/normalized-dev/bridge/{}] {}",
+            category,
+            message.as_ref()
+        );
     }
 }
 

src/mir/join_ir_vm_bridge/normalized_bridge/direct.rs

@@ -1,8 +1,8 @@
 #![cfg(feature = "normalized_dev")]
 
+use super::super::convert_mir_like_inst;
 use super::super::join_func_name;
 use super::super::JoinIrVmBridgeError;
-use super::super::convert_mir_like_inst;
 use crate::ast::Span;
 use crate::mir::join_ir::normalized::{JpFuncId, JpFunction, JpInst, JpOp, NormalizedModule};
 use crate::mir::join_ir::{JoinFuncId, JoinIrPhase, MirLikeInst};
@@ -83,7 +83,9 @@ fn lower_normalized_function_direct(
 
     let remap = |id: ValueId, map: &mut BTreeMap<ValueId, ValueId>| remap_value(id, map);
     let remap_vec = |ids: &[ValueId], map: &mut BTreeMap<ValueId, ValueId>| {
-        ids.iter().map(|id| remap_value(*id, map)).collect::<Vec<_>>()
+        ids.iter()
+            .map(|id| remap_value(*id, map))
+            .collect::<Vec<_>>()
     };
 
     let remapped_params = remap_vec(&params, &mut value_map);
@@ -188,7 +190,8 @@ fn lower_normalized_function_direct(
             }
             JpInst::TailCallFn { target, env } => {
                 let env_remapped = remap_vec(env, &mut value_map);
-                let (instructions, terminator) = build_tail_call(&mut mir_func, target, &env_remapped);
+                let (instructions, terminator) =
+                    build_tail_call(&mut mir_func, target, &env_remapped);
                 finalize_block(
                     &mut mir_func,
                     current_block_id,
@@ -371,7 +374,12 @@ fn build_tail_call(
         effects: EffectMask::PURE,
     });
 
-    (instructions, MirInstruction::Return { value: Some(result_id) })
+    (
+        instructions,
+        MirInstruction::Return {
+            value: Some(result_id),
+        },
+    )
 }
 
 fn build_exit_or_tail_branch(

src/mir/loop_canonicalizer/canonicalizer.rs

@@ -6,7 +6,7 @@
 use crate::ast::ASTNode;
 use crate::mir::loop_pattern_detection::LoopPatternKind;
 
-use super::capability_guard::{capability_tags, RoutingDecision};
+use super::capability_guard::{CapabilityTag, RoutingDecision};
 use super::pattern_recognizer::try_extract_skip_whitespace_pattern;
 use super::skeleton_types::{
     CarrierRole, CarrierSlot, ExitContract, LoopSkeleton, SkeletonStep, UpdateKind,
@@ -63,9 +63,9 @@ pub fn canonicalize_loop_expr(
 
         // Step 2: Body statements (if any)
         if !body_stmts.is_empty() {
-            skeleton.steps.push(SkeletonStep::Body {
-                stmts: body_stmts,
-            });
+            skeleton
+                .steps
+                .push(SkeletonStep::Body { stmts: body_stmts });
         }
 
         // Step 3: Update step
@@ -100,7 +100,7 @@ pub fn canonicalize_loop_expr(
     Ok((
         LoopSkeleton::new(span),
         RoutingDecision::fail_fast(
-            vec![capability_tags::CAP_MISSING_CONST_STEP],
+            vec![CapabilityTag::ConstStep],
             "Phase 3: Loop does not match skip_whitespace pattern".to_string(),
         ),
     ))
@@ -192,14 +192,8 @@ mod tests {
 
         // Verify skeleton structure
         assert_eq!(skeleton.steps.len(), 2); // HeaderCond + Update
-        assert!(matches!(
-            skeleton.steps[0],
-            SkeletonStep::HeaderCond { .. }
-        ));
-        assert!(matches!(
-            skeleton.steps[1],
-            SkeletonStep::Update { .. }
-        ));
+        assert!(matches!(skeleton.steps[0], SkeletonStep::HeaderCond { .. }));
+        assert!(matches!(skeleton.steps[1], SkeletonStep::Update { .. }));
 
         // Verify carrier
         assert_eq!(skeleton.carriers.len(), 1);
@@ -300,15 +294,9 @@ mod tests {
 
         // Verify skeleton has Body step
         assert_eq!(skeleton.steps.len(), 3); // HeaderCond + Body + Update
-        assert!(matches!(
-            skeleton.steps[0],
-            SkeletonStep::HeaderCond { .. }
-        ));
+        assert!(matches!(skeleton.steps[0], SkeletonStep::HeaderCond { .. }));
         assert!(matches!(skeleton.steps[1], SkeletonStep::Body { .. }));
-        assert!(matches!(
-            skeleton.steps[2],
-            SkeletonStep::Update { .. }
-        ));
+        assert!(matches!(skeleton.steps[2], SkeletonStep::Update { .. }));
 
         // Verify body contains 1 statement
         match &skeleton.steps[1] {
@@ -360,9 +348,7 @@ mod tests {
 
         let (_, decision) = result.unwrap();
         assert!(decision.is_fail_fast());
-        assert!(decision
-            .notes[0]
-            .contains("does not match skip_whitespace pattern"));
+        assert!(decision.notes[0].contains("does not match skip_whitespace pattern"));
     }
 
     #[test]

src/mir/loop_canonicalizer/capability_guard.rs

@@ -18,8 +18,8 @@ pub struct RoutingDecision {
     /// Selected pattern (None = Fail-Fast)
     pub chosen: Option<LoopPatternKind>,
 
-    /// Missing capabilities that prevented other patterns
-    pub missing_caps: Vec<&'static str>,
+    /// Missing capabilities that prevented other patterns (type-safe!)
+    pub missing_caps: Vec<CapabilityTag>,
 
     /// Selection reasoning (for debugging)
     pub notes: Vec<String>,
@@ -40,12 +40,17 @@ impl RoutingDecision {
     }
 
     /// Create a failed routing decision (Fail-Fast)
-    pub fn fail_fast(missing_caps: Vec<&'static str>, reason: String) -> Self {
+    pub fn fail_fast(missing_caps: Vec<CapabilityTag>, reason: String) -> Self {
+        let error_tags = missing_caps
+            .iter()
+            .map(|cap| cap.to_tag().to_string())
+            .collect();
+
         Self {
             chosen: None,
             missing_caps,
             notes: vec![reason.clone()],
-            error_tags: vec![format!("[loop_canonicalizer/fail_fast] {}", reason)],
+            error_tags,
         }
     }
 
@@ -125,38 +130,3 @@ impl CapabilityTag {
         }
     }
 }
-
-// ============================================================================
-// Legacy Capability Tags (Deprecated - will be removed in Phase 139-P3-B)
-// ============================================================================
-
-/// Legacy capability tags - Standardized vocabulary for Fail-Fast reasons
-///
-/// ⚠️ DEPRECATED: Use CapabilityTag enum instead for type safety.
-/// This module will be removed in Phase 139-P3-B.
-#[deprecated(since = "Phase 139-P3-A", note = "Use CapabilityTag enum instead")]
-pub mod capability_tags {
-    /// Requires: Carrier update is constant step (`i = i + const`)
-    pub const CAP_MISSING_CONST_STEP: &str = "CAP_MISSING_CONST_STEP";
-
-    /// Requires: Single break point only
-    pub const CAP_MISSING_SINGLE_BREAK: &str = "CAP_MISSING_SINGLE_BREAK";
-
-    /// Requires: Single continue point only
-    pub const CAP_MISSING_SINGLE_CONTINUE: &str = "CAP_MISSING_SINGLE_CONTINUE";
-
-    /// Requires: Loop header condition has no side effects
-    pub const CAP_MISSING_PURE_HEADER: &str = "CAP_MISSING_PURE_HEADER";
-
-    /// Requires: Condition variable defined in outer local scope
-    pub const CAP_MISSING_OUTER_LOCAL_COND: &str = "CAP_MISSING_OUTER_LOCAL_COND";
-
-    /// Requires: All exit bindings are complete (no missing values)
-    pub const CAP_MISSING_EXIT_BINDINGS: &str = "CAP_MISSING_EXIT_BINDINGS";
-
-    /// Requires: LoopBodyLocal can be promoted to carrier
-    pub const CAP_MISSING_CARRIER_PROMOTION: &str = "CAP_MISSING_CARRIER_PROMOTION";
-
-    /// Requires: Break value types are consistent across all break points
-    pub const CAP_MISSING_BREAK_VALUE_TYPE: &str = "CAP_MISSING_BREAK_VALUE_TYPE";
-}

src/mir/loop_canonicalizer/mod.rs

@@ -34,10 +34,10 @@
 // Module Declarations
 // ============================================================================
 
-mod skeleton_types;
+mod canonicalizer;
 mod capability_guard;
 mod pattern_recognizer;
-mod canonicalizer;
+mod skeleton_types;
 
 // ============================================================================
 // Public Re-exports
@@ -45,20 +45,11 @@ mod canonicalizer;
 
 // Skeleton Types
 pub use skeleton_types::{
-    CarrierRole,
-    CarrierSlot,
-    CapturedSlot,
-    ExitContract,
-    LoopSkeleton,
-    SkeletonStep,
-    UpdateKind,
+    CapturedSlot, CarrierRole, CarrierSlot, ExitContract, LoopSkeleton, SkeletonStep, UpdateKind,
 };
 
 // Capability Guard
-pub use capability_guard::{
-    capability_tags,
-    RoutingDecision,
-};
+pub use capability_guard::{CapabilityTag, RoutingDecision};
 
 // Canonicalization Entry Point
 pub use canonicalizer::canonicalize_loop_expr;
@@ -97,13 +88,12 @@ mod tests {
         assert!(success.is_success());
         assert!(!success.is_fail_fast());
 
-        let fail = RoutingDecision::fail_fast(
-            vec![capability_tags::CAP_MISSING_CONST_STEP],
-            "Test failure".to_string(),
-        );
+        let fail =
+            RoutingDecision::fail_fast(vec![CapabilityTag::ConstStep], "Test failure".to_string());
         assert!(!fail.is_success());
         assert!(fail.is_fail_fast());
         assert_eq!(fail.missing_caps.len(), 1);
+        assert_eq!(fail.missing_caps[0], CapabilityTag::ConstStep);
     }
 
     #[test]

src/mir/loop_canonicalizer/skeleton_types.rs

@@ -39,20 +39,13 @@ pub struct LoopSkeleton {
 #[derive(Debug, Clone)]
 pub enum SkeletonStep {
     /// Loop continuation condition (the `cond` in `loop(cond)`)
-    HeaderCond {
-        expr: Box<ASTNode>,
-    },
+    HeaderCond { expr: Box<ASTNode> },
 
     /// Early exit check (`if cond { break }`)
-    BreakCheck {
-        cond: Box<ASTNode>,
-        has_value: bool,
-    },
+    BreakCheck { cond: Box<ASTNode>, has_value: bool },
 
     /// Skip check (`if cond { continue }`)
-    ContinueCheck {
-        cond: Box<ASTNode>,
-    },
+    ContinueCheck { cond: Box<ASTNode> },
 
     /// Carrier update (`i = i + 1`, etc.)
     Update {
@@ -61,9 +54,7 @@ pub enum SkeletonStep {
     },
 
     /// Loop body (all other statements)
-    Body {
-        stmts: Vec<ASTNode>,
-    },
+    Body { stmts: Vec<ASTNode> },
 }
 
 /// Update kind - How a carrier variable is updated
@@ -72,9 +63,7 @@ pub enum SkeletonStep {
 #[derive(Debug, Clone)]
 pub enum UpdateKind {
     /// Constant step (`i = i + const`)
-    ConstStep {
-        delta: i64,
-    },
+    ConstStep { delta: i64 },
 
     /// Conditional update (`if cond { x = a } else { x = b }`)
     Conditional {

src/mir/loop_pattern_detection/digitpos_detector.rs

@@ -441,11 +441,7 @@ mod tests {
 
             let result = DigitPosDetector::detect(&condition, &loop_body, "p");
 
-            assert!(
-                result.is_some(),
-                "Expected detection for operator {:?}",
-                op
-            );
+            assert!(result.is_some(), "Expected detection for operator {:?}", op);
         }
     }
 

src/mir/loop_pattern_detection/function_scope_capture/helpers.rs

@@ -56,9 +56,7 @@ pub(super) fn body_matches(a: &[ASTNode], b: &[ASTNode]) -> bool {
 /// Collect local variable declarations from statements
 ///
 /// Returns Vec<(name, init_expr)> for each variable declared with `local`.
-pub(super) fn collect_local_declarations(
-    stmts: &[ASTNode],
-) -> Vec<(String, Option<Box<ASTNode>>)> {
+pub(super) fn collect_local_declarations(stmts: &[ASTNode]) -> Vec<(String, Option<Box<ASTNode>>)> {
     let mut locals = Vec::new();
 
     for stmt in stmts {

src/mir/loop_pattern_detection/loop_body_carrier_promoter.rs

@@ -80,8 +80,9 @@ impl TrimPatternInfo {
     /// - JoinInlineBoundary will handle the boundary mapping
     pub fn to_carrier_info(
         &self,
-        #[cfg(feature = "normalized_dev")]
-        binding_map: Option<&std::collections::BTreeMap<String, crate::mir::BindingId>>,
+        #[cfg(feature = "normalized_dev")] binding_map: Option<
+            &std::collections::BTreeMap<String, crate::mir::BindingId>,
+        >,
     ) -> crate::mir::join_ir::lowering::carrier_info::CarrierInfo {
         use super::trim_loop_helper::TrimLoopHelper;
         use crate::mir::join_ir::lowering::carrier_info::CarrierInfo;
@@ -110,11 +111,9 @@ impl TrimPatternInfo {
         #[cfg(not(feature = "normalized_dev"))]
         let recorder = PromotedBindingRecorder::new();
 
-        if let Err(e) = recorder.record_promotion(
-            &mut carrier_info,
-            &self.var_name,
-            &self.carrier_name,
-        ) {
+        if let Err(e) =
+            recorder.record_promotion(&mut carrier_info, &self.var_name, &self.carrier_name)
+        {
             log_trim_promotion_error(&e);
         }
 
@@ -195,8 +194,7 @@ impl LoopBodyCarrierPromoter {
         // 3. 各 LoopBodyLocal に対して TrimDetector で検出を試行
         for var_name in &body_locals {
             // Phase 79: Use TrimDetector for pure detection logic
-            if let Some(detection) = TrimDetector::detect(break_cond, request.loop_body, var_name)
-            {
+            if let Some(detection) = TrimDetector::detect(break_cond, request.loop_body, var_name) {
                 if is_joinir_debug() || std::env::var("JOINIR_TEST_DEBUG").is_ok() {
                     eprintln!(
                         "[promoter/pattern5] Trim pattern detected! var='{}', literals={:?}",

src/mir/loop_pattern_detection/loop_body_digitpos_promoter.rs

@@ -148,11 +148,8 @@ impl DigitPosPromoter {
         }
 
         // Step 3: Use DigitPosDetector for pure detection
-        let detection = DigitPosDetector::detect(
-            condition.unwrap(),
-            req.loop_body,
-            req.loop_param_name,
-        );
+        let detection =
+            DigitPosDetector::detect(condition.unwrap(), req.loop_body, req.loop_param_name);
 
         if detection.is_none() {
             return DigitPosPromotionResult::CannotPromote {
@@ -171,9 +168,7 @@ impl DigitPosPromoter {
         }
 
         // Step 4: Build CarrierInfo
-        use crate::mir::join_ir::lowering::carrier_info::{
-            CarrierInit, CarrierRole, CarrierVar,
-        };
+        use crate::mir::join_ir::lowering::carrier_info::{CarrierInit, CarrierRole, CarrierVar};
 
         // Boolean carrier (condition-only, for break)
         let promoted_carrier_bool = CarrierVar {

src/mir/loop_pattern_detection/trim_detector.rs

@@ -424,7 +424,11 @@ mod tests {
 
             let result = TrimDetector::detect(&condition, &loop_body, var_name);
 
-            assert!(result.is_some(), "Expected detection for var '{}'", var_name);
+            assert!(
+                result.is_some(),
+                "Expected detection for var '{}'",
+                var_name
+            );
             let result = result.unwrap();
             assert_eq!(result.match_var, var_name);
             assert_eq!(result.carrier_name, format!("is_{}_match", var_name));

src/mir/region/observer.rs

@@ -37,7 +37,8 @@ pub fn observe_control_form(builder: &mut MirBuilder, form: &ControlForm) {
     }
 
     let func_name = builder
-        .scope_ctx.current_function
+        .scope_ctx
+        .current_function
         .as_ref()
         .map(|f| f.signature.name.as_str())
         .unwrap_or("<unknown>");
@@ -60,7 +61,8 @@ pub fn observe_control_form(builder: &mut MirBuilder, form: &ControlForm) {
 
     // 変数スロットは SlotRegistry があればそれを優先し、なければ
     // variable_map と value_types から best-effort で推定するよ。
-    let slots: Vec<SlotMetadata> = if let Some(reg) = builder.comp_ctx.current_slot_registry.as_mut() {
+    let slots: Vec<SlotMetadata> =
+        if let Some(reg) = builder.comp_ctx.current_slot_registry.as_mut() {
             classify_slots_from_registry(reg)
         } else {
             classify_slots_from_variable_map(builder)
@@ -94,7 +96,8 @@ pub fn observe_function_region(builder: &mut MirBuilder) {
     }
 
     let func_name = builder
-        .scope_ctx.current_function
+        .scope_ctx
+        .current_function
         .as_ref()
         .map(|f| f.signature.name.as_str())
         .unwrap_or("<unknown>");
@@ -107,7 +110,8 @@ pub fn observe_function_region(builder: &mut MirBuilder) {
     let id = RegionId(NEXT_REGION_ID.fetch_add(1, Ordering::Relaxed));
 
     let entry_block = builder
-        .scope_ctx.current_function
+        .scope_ctx
+        .current_function
         .as_ref()
         .map(|f| f.entry_block)
         .unwrap_or_else(|| crate::mir::BasicBlockId::new(0));

src/mir/utils/phi_helpers.rs

@@ -70,7 +70,9 @@ impl MirBuilder {
         };
 
         // 統一された挿入ロジック（既存パターンと完全互換）
-        if let (Some(func), Some(cur_bb)) = (self.scope_ctx.current_function.as_mut(), self.current_block) {
+        if let (Some(func), Some(cur_bb)) =
+            (self.scope_ctx.current_function.as_mut(), self.current_block)
+        {
             // CFG経由の正規化挿入（predecessor順序の正規化を含む）
             crate::mir::ssot::cf_common::insert_phi_at_head_spanned(
                 func,
@@ -136,7 +138,9 @@ impl MirBuilder {
         inputs: Vec<(BasicBlockId, ValueId)>,
     ) -> Result<(), String> {
         // 統一された挿入ロジック（既存パターンと完全互換）
-        if let (Some(func), Some(cur_bb)) = (self.scope_ctx.current_function.as_mut(), self.current_block) {
+        if let (Some(func), Some(cur_bb)) =
+            (self.scope_ctx.current_function.as_mut(), self.current_block)
+        {
             // CFG経由の正規化挿入（predecessor順序の正規化を含む）
             crate::mir::ssot::cf_common::insert_phi_at_head_spanned(
                 func,

src/runner/mir_json_emit.rs

@@ -201,7 +201,8 @@ pub fn emit_mir_json_for_harness(
                             .map(|(b, v)| json!([v.as_u32(), b.as_u32()]))
                             .collect();
                         // Phase 131-11-F: Add dst_type hint from metadata for all PHI instructions
-                        let mut phi_inst = json!({"op":"phi","dst": dst.as_u32(), "incoming": incoming});
+                        let mut phi_inst =
+                            json!({"op":"phi","dst": dst.as_u32(), "incoming": incoming});
                         if let Some(dst_type) = f.metadata.value_types.get(dst) {
                             let type_json = match dst_type {
                                 MirType::Integer => json!("i64"),
@@ -227,7 +228,9 @@ pub fn emit_mir_json_for_harness(
                             continue;
                         }
                         I::Copy { dst, src } => {
-                            insts.push(json!({"op":"copy","dst": dst.as_u32(), "src": src.as_u32()}));
+                            insts.push(
+                                json!({"op":"copy","dst": dst.as_u32(), "src": src.as_u32()}),
+                            );
                         }
                         I::UnaryOp { dst, op, operand } => {
                             let kind = match op {
@@ -422,8 +425,7 @@ pub fn emit_mir_json_for_harness(
                                             obj["dst_type"] = t;
                                         }
                                         insts.push(obj);
-                                        if let Some(d) = dst.map(|v| v.as_u32()) {
-                                        }
+                                        if let Some(d) = dst.map(|v| v.as_u32()) {}
                                     }
                                     _ => {
                                         // Other callee types: emit generic call
@@ -496,8 +498,7 @@ pub fn emit_mir_json_for_harness(
                                 obj["dst_type"] = t;
                             }
                             insts.push(obj);
-                            if let Some(d) = dst.map(|v| v.as_u32()) {
-                            }
+                            if let Some(d) = dst.map(|v| v.as_u32()) {}
                         }
                         I::NewBox {
                             dst,
@@ -622,7 +623,8 @@ pub fn emit_mir_json_for_harness_bin(
                             .map(|(b, v)| json!([v.as_u32(), b.as_u32()]))
                             .collect();
                         // Phase 131-11-F: Add dst_type hint from metadata for all PHI instructions
-                        let mut phi_inst = json!({"op":"phi","dst": dst.as_u32(), "incoming": incoming});
+                        let mut phi_inst =
+                            json!({"op":"phi","dst": dst.as_u32(), "incoming": incoming});
                         if let Some(dst_type) = f.metadata.value_types.get(dst) {
                             let type_json = match dst_type {
                                 MirType::Integer => json!("i64"),
@@ -648,10 +650,11 @@ pub fn emit_mir_json_for_harness_bin(
                             continue;
                         }
                         I::Copy { dst, src } => {
-                            insts.push(json!({"op":"copy","dst": dst.as_u32(), "src": src.as_u32()}));
+                            insts.push(
+                                json!({"op":"copy","dst": dst.as_u32(), "src": src.as_u32()}),
+                            );
                         }
-                        I::Const { dst, value } => {
-                            match value {
+                        I::Const { dst, value } => match value {
                             crate::mir::ConstValue::Integer(i) => {
                                 insts.push(json!({"op":"const","dst": dst.as_u32(), "value": {"type": "i64", "value": i}}));
                             }
@@ -674,8 +677,7 @@ pub fn emit_mir_json_for_harness_bin(
                             crate::mir::ConstValue::Null | crate::mir::ConstValue::Void => {
                                 insts.push(json!({"op":"const","dst": dst.as_u32(), "value": {"type": "void", "value": 0}}));
                             }
-                            }
-                        }
+                        },
                         I::BinOp { dst, op, lhs, rhs } => {
                             let op_s = match op {
                                 B::Add => "+",
@@ -794,8 +796,7 @@ pub fn emit_mir_json_for_harness_bin(
                                             obj["dst_type"] = t;
                                         }
                                         insts.push(obj);
-                                        if let Some(d) = dst.map(|v| v.as_u32()) {
-                                        }
+                                        if let Some(d) = dst.map(|v| v.as_u32()) {}
                                     }
                                     _ => {
                                         // Other callee types: emit generic call
@@ -829,8 +830,7 @@ pub fn emit_mir_json_for_harness_bin(
                                 }
                             }
                             insts.push(obj);
-                            if let Some(d) = dst.map(|v| v.as_u32()) {
-                            }
+                            if let Some(d) = dst.map(|v| v.as_u32()) {}
                         }
                         I::BoxCall {
                             dst,
@@ -860,8 +860,7 @@ pub fn emit_mir_json_for_harness_bin(
                                 obj["dst_type"] = t;
                             }
                             insts.push(obj);
-                            if let Some(d) = dst.map(|v| v.as_u32()) {
-                            }
+                            if let Some(d) = dst.map(|v| v.as_u32()) {}
                         }
                         I::NewBox {
                             dst,

tests/normalized_joinir_min.rs

@@ -13,15 +13,15 @@ use nyash_rust::mir::join_ir::normalized::fixtures::{
     build_jsonparser_skip_ws_real_structured_for_normalized_dev,
     build_jsonparser_skip_ws_structured_for_normalized_dev,
     build_jsonparser_unescape_string_step2_min_structured_for_normalized_dev,
+    build_parse_array_min_structured_for_normalized_dev,
+    build_parse_object_min_structured_for_normalized_dev,
+    build_parse_string_composite_min_structured_for_normalized_dev,
     build_pattern2_break_fixture_structured, build_pattern2_minimal_structured,
     build_pattern3_if_sum_min_structured_for_normalized_dev,
     build_pattern3_if_sum_multi_min_structured_for_normalized_dev,
     build_pattern3_json_if_sum_min_structured_for_normalized_dev,
     build_pattern4_continue_min_structured_for_normalized_dev,
     build_pattern_continue_return_min_structured_for_normalized_dev,
-    build_parse_string_composite_min_structured_for_normalized_dev,
-    build_parse_array_min_structured_for_normalized_dev,
-    build_parse_object_min_structured_for_normalized_dev,
     build_selfhost_args_parse_p2_structured_for_normalized_dev,
     build_selfhost_if_sum_p3_ext_structured_for_normalized_dev,
     build_selfhost_if_sum_p3_structured_for_normalized_dev,

tests/normalized_joinir_min/shapes.rs

@@ -366,7 +366,8 @@ fn test_phase88_jsonparser_unescape_string_step2_min_rejects_non_const_then_i_up
     assert!(res.is_err(), "expected fail-fast panic");
     let msg = panic_message(res.err().unwrap());
     assert!(
-        msg.contains("then' branch step increment") || msg.contains("then i update of form (i + const)"),
+        msg.contains("then' branch step increment")
+            || msg.contains("then i update of form (i + const)"),
         "unexpected panic message: {}",
         msg
     );
@@ -549,7 +550,10 @@ fn test_normalized_pattern_continue_return_min_vm_bridge_direct_matches_structur
     let base = run_joinir_vm_bridge(&structured, entry, &input, false);
     let dev = run_joinir_vm_bridge(&structured, entry, &input, true);
 
-    assert_eq!(base, dev, "vm bridge mismatch for pattern continue+return min");
+    assert_eq!(
+        base, dev,
+        "vm bridge mismatch for pattern continue+return min"
+    );
 }
 
 /// Phase 89 P1: Pattern Continue + Return minimal - expected output test
@@ -580,7 +584,10 @@ fn test_parse_string_composite_min_vm_bridge_direct_matches_structured() {
     let base = run_joinir_vm_bridge(&structured, entry, &input, false);
     let dev = run_joinir_vm_bridge(&structured, entry, &input, true);
 
-    assert_eq!(base, dev, "vm bridge mismatch for parse_string composite min");
+    assert_eq!(
+        base, dev,
+        "vm bridge mismatch for parse_string composite min"
+    );
 }
 
 /// Phase 90 P0: Parse String Composite minimal - expected output test
@@ -614,7 +621,11 @@ fn test_continue_return_multi_min_returns_null_at_first_match() {
     // Tests:
     // - Refactor-A: Null literal support (returns ConstValue::Null → JoinValue::Unit)
     // - Refactor-B: Multiple return-if with same value (i==3, i==7 both return null)
-    assert_eq!(result, JoinValue::Unit, "Expected Unit (null) from first return-if at i=3");
+    assert_eq!(
+        result,
+        JoinValue::Unit,
+        "Expected Unit (null) from first return-if at i=3"
+    );
 }
 
 /// Phase Next: Parse Array minimal - vm_bridge direct vs structured