refactor(mir): phase260 p0 edge-args plumbing (strangler) + ssot api + docs

src/backend/mir_interpreter/exec.rs

@@ -394,7 +394,7 @@ impl MirInterpreter {
                 };
                 Ok(BlockOutcome::Return(result))
             }
-            Some(MirInstruction::Jump { target }) => Ok(BlockOutcome::Next {
+            Some(MirInstruction::Jump { target, .. }) => Ok(BlockOutcome::Next {
                 target: *target,
                 predecessor: block.id,
             }),
@@ -402,6 +402,7 @@ impl MirInterpreter {
                 condition,
                 then_bb,
                 else_bb,
+                ..
             }) => {
                 // Dev counter: count branch terminators actually evaluated
                 self.branch_count = self.branch_count.saturating_add(1);

src/backend/wasm/codegen.rs

@@ -388,7 +388,7 @@ impl WasmCodegen {
             }
 
             // Control Flow Instructions (Critical for loops and conditions)
-            MirInstruction::Jump { target } => {
+            MirInstruction::Jump { target, .. } => {
                 // Unconditional jump to target basic block
                 // Use WASM br instruction to break to the target block
                 Ok(vec![format!("br $block_{}", target.as_u32())])
@@ -398,6 +398,7 @@ impl WasmCodegen {
                 condition,
                 then_bb,
                 else_bb,
+                ..
             } => {
                 // Conditional branch based on condition value
                 // Load condition value and branch accordingly