docs: update references after module splits

docs/development/current/main/phases/phase-284/P0-INSTRUCTIONS.md

@@ -23,7 +23,6 @@
 
 - `docs/development/current/main/phases/phase-284/README.md`
 - `docs/development/current/main/design/edgecfg-fragments.md`
-- `src/mir/builder/control_flow/edgecfg/api/compose.rs`
+- `src/mir/builder/control_flow/edgecfg/api/compose/mod.rs`
 - `src/mir/builder/control_flow/edgecfg/api/emit.rs`
 - `docs/development/current/main/phases/phase-282/README.md`
-

docs/development/current/main/phases/phase-284/README.md

@@ -10,7 +10,7 @@ Status: P1 Complete (2025-12-23)
 ## SSOT References
 
 - Frag/ExitKind 設計: `docs/development/current/main/design/edgecfg-fragments.md`
-- Composition API: `src/mir/builder/control_flow/edgecfg/api/compose.rs`
+- Composition API: `src/mir/builder/control_flow/edgecfg/api/compose/mod.rs`
 - Terminator emission: `src/mir/builder/control_flow/edgecfg/api/emit.rs`（`emit_frag()`）
 - Router SSOT（SSOT=extract / safety valve）: `docs/development/current/main/phases/phase-282/README.md`
 
@@ -53,7 +53,7 @@ Phase 284 の完了条件は「`return` を含むケースが close-but-unsuppor
 - 入口: `src/mir/builder/control_flow/joinir/patterns/router.rs`（route=plan）
 - SSOT:
   - `src/mir/builder/control_flow/plan/normalizer.rs`（Frag 構築: branches/wires/exits）
-  - `src/mir/builder/control_flow/edgecfg/api/compose.rs`（合成 SSOT）
+  - `src/mir/builder/control_flow/edgecfg/api/compose/mod.rs`（合成 SSOT）
   - `src/mir/builder/control_flow/edgecfg/api/emit.rs`（`emit_frag()` terminator SSOT）
 - ここでは `return` を **Return edge（ExitKind::Return）**として組み立てるのが自然。