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/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 {
@@ -171,16 +168,14 @@ 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 {
             name: detection.bool_carrier_name.clone(),
-            host_id: ValueId(0), // Placeholder (will be remapped)
-            join_id: None,       // Will be allocated later
-            role: CarrierRole::ConditionOnly, // Phase 227: DigitPos is condition-only
+            host_id: ValueId(0),                 // Placeholder (will be remapped)
+            join_id: None,                       // Will be allocated later
+            role: CarrierRole::ConditionOnly,    // Phase 227: DigitPos is condition-only
             init: CarrierInit::BoolConst(false), // Phase 228: Initialize with false
             #[cfg(feature = "normalized_dev")]
             binding_id: None, // Phase 78: Set by CarrierBindingAssigner

src/mir/loop_pattern_detection/tests.rs

@@ -116,7 +116,7 @@ fn classify_body(body: &[ASTNode]) -> LoopPatternKind {
         carrier_count: carrier_count(body),
         break_count: if has_break_flag { 1 } else { 0 },
         continue_count: if has_continue_flag { 1 } else { 0 },
-        is_infinite_loop: false,  // テストでは通常ループを想定
+        is_infinite_loop: false, // テストでは通常ループを想定
         update_summary: None,
     };
     classify(&features)

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));