phase29ap(p10): coreplan adopt nested minimal (strict/dev)

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 P10 (planned; see `docs/development/current/main/phases/phase-29ap/README.md`)
+- Next: Phase 29ap P11 (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: P10 planned)
+- Phase 29ap: `docs/development/current/main/phases/phase-29ap/README.md` (Next: P11 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 P10 (planned)
+- Next step: Phase 29ap P11 (planned)
 
 ## 2. すでに固めた SSOT（再発防止の土台）
 

docs/development/current/main/phases/phase-29ap/P10-NESTED-MINIMAL-COREPLAN-SUBSET-INSTRUCTIONS.md

@@ -0,0 +1,40 @@
+# Phase 29ap P10: Pattern6_NestedLoopMinimal minimal CorePlan subset (strict/dev)
+
+## Goal
+
+- In strict/dev, adopt a minimal nested-loop CorePlan for the `phase1883_nested_minimal` shape.
+- Keep release/default behavior unchanged (legacy JoinIR path remains).
+- Fail-fast in strict/dev when nested loops are detected but the subset does not match.
+
+## Subset (SSOT)
+
+- Outer loop: `loop(i < <int>)` with step `i = i + 1` (step=1 only).
+- Inner loop: `loop(j < <int>)` with body `sum = sum + 1; j = j + 1` (step=1 only).
+- Inner init: `j = 0` (via `local j` + assignment, or `local j = 0`).
+- No break/continue/return inside outer or inner loop.
+- No value-join / exitmap / cleanup (presence must be empty).
+
+## Steps
+
+1. Facts (SSOT)
+   - Add `Pattern6NestedMinimalFacts` and wire it into `LoopFacts` (optional field).
+   - Keep `Ok(None)` for non-matches; no hardcode by-name.
+
+2. Composer v2 (strict/dev)
+   - Add `coreloop_v2_nested_minimal.rs` and compose a single CoreLoopPlan with a nested CFG.
+   - Body remains effect-only (j-init only); inner loop is encoded via extra blocks + Frag wiring.
+
+3. Strict/dev adopt
+   - If nested facts are present, adopt and emit tag:
+     - `[coreplan/shadow_adopt:pattern6_nested_minimal]`
+   - If nested facts are missing, keep the strict/dev freeze (fail-fast).
+
+4. Smoke gate
+   - Update `phase29ap_pattern6_nested_strict_shadow_vm.sh` to require the shadow-adopt tag.
+
+## Verification
+
+- `cargo build --release`
+- `./tools/smokes/v2/run.sh --profile quick`
+- `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`
+

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

@@ -108,6 +108,16 @@ Gate (SSOT):
   - Release/default behavior remains unchanged.
   - Gate stays green.
 
+## P10: Pattern6_NestedLoopMinimal minimal CorePlan subset (strict/dev) ✅
+
+- Scope:
+  - Add nested minimal facts (outer+inner loop subset) and project into canonical facts.
+  - Compose nested loop CorePlan v2 in strict/dev and emit shadow-adopt tag.
+  - Update the strict smoke to require the new tag.
+- Guardrails:
+  - Release/default behavior remains unchanged (legacy JoinIR path stays).
+  - Gate stays green.
+
 ## Next (planned)
 
-- P10: Pattern6_NestedLoopMinimal migration/design (keep nested gate green)
+- P11: Pattern6_NestedLoopMinimal release adopt (TBD; keep strict gate green)