phase29ap(p8): remove pattern4 legacy routing

docs/development/current/main/10-Now.md

@@ -3,7 +3,7 @@
 ## Current Focus
 
 - Phase: `docs/development/current/main/phases/phase-29ap/README.md`
-- Next: Phase 29ap P8 (planned; see `docs/development/current/main/phases/phase-29ap/README.md`)
+- Next: Phase 29ap P9 (planned; see `docs/development/current/main/phases/phase-29ap/README.md`)
 
 ## Gate (SSOT)
 

docs/development/current/main/30-Backlog.md

@@ -5,7 +5,7 @@ Scope: 「次にやる候補」を短く列挙するメモ。入口は `docs/dev
 
 ## Active
 
-- Phase 29ap: `docs/development/current/main/phases/phase-29ap/README.md` (Next: P8 planned)
+- Phase 29ap: `docs/development/current/main/phases/phase-29ap/README.md` (Next: P9 planned)
 - JoinIR regression gate SSOT: `docs/development/current/main/phases/phase-29ae/README.md`
 - CorePlan hardening (docs-first): `docs/development/current/main/phases/phase-29al/README.md`
 

docs/development/current/main/design/coreplan-migration-roadmap-ssot.md

@@ -34,7 +34,7 @@ Related:
 ## 1.1 Current (active)
 
 - Active phase: `docs/development/current/main/phases/phase-29ap/README.md`
-- Next step: Phase 29ap P8 (planned)
+- Next step: Phase 29ap P9 (planned)
 
 ## 2. すでに固めた SSOT（再発防止の土台）
 

docs/development/current/main/phases/phase-29ae/README.md

@@ -10,6 +10,7 @@ Goal: JoinIR の最小回帰セットを SSOT として固定する。
 - Pattern2 (release adopt, VM): `phase29ao_pattern2_release_adopt_vm`
 - Pattern3 (If‑Phi, VM): `phase118_pattern3_if_sum_vm`
 - Pattern3 (release adopt, VM): `phase29ao_pattern3_release_adopt_vm`
+- Pattern4 (continue min, VM): `phase29ap_pattern4_continue_min_vm`
 - Pattern1 (strict shadow, VM): `phase29ao_pattern1_strict_shadow_vm`
 - Pattern1 (subset reject, VM): `phase29ao_pattern1_subset_reject_extra_stmt_vm`
 - Pattern1 (stdlib to_lower, VM): `phase29ap_stringutils_tolower_vm`

docs/development/current/main/phases/phase-29ap/README.md

@@ -57,7 +57,7 @@ Gate (SSOT):
 
 - Scope:
   - Remove Pattern8 from `LOOP_PATTERNS` so plan/composer stays SSOT for normal loops.
-  - Keep legacy table as last resort for Pattern6_NestedLoopMinimal / Pattern4 / Pattern9 only.
+  - Keep legacy table as a last resort for the remaining legacy entries.
 - Guardrails:
   - No change to logs or error strings.
   - Legacy routing remains a last-resort fallback.
@@ -81,8 +81,6 @@ Gate (SSOT):
   - No new logs or error strings.
   - Subset only: if shape deviates, return `Ok(None)`.
 
-## Next (planned)
-
 ## P7: Pattern9 legacy table removal ✅
 
 - Scope:
@@ -91,6 +89,15 @@ Gate (SSOT):
 - Guardrails:
   - No change to logs or error strings.
 
+## P8: Remove Pattern4 legacy routing ✅
+
+- Scope:
+  - Remove Pattern4_WithContinue from `LOOP_PATTERNS`.
+  - Add a minimal continue fixture + regression smoke under JoinIR gate.
+- Guardrails:
+  - No change to logs or error strings.
+  - Plan/composer remains the only routing path for Pattern4.
+
 ## Next (planned)
 
-- P8: Follow-up legacy table shrink or leave as-is with justification
+- P9: Pattern6_NestedLoopMinimal migration/design (keep phase1883 gate green)