phase29aj(p0): expose planner outcome facts for strict observability

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

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+# Phase 29aj: PlannerOutcome observability SSOT
+
+Goal: planner の facts/plan を 1 本の outcome に集約し、観測の SSOT を planner 側に固定する（仕様不変）。
+
+## P0: PlannerOutcome（Facts+Plan）SSOT
+
+- 指示書: `docs/development/current/main/phases/phase-29aj/P0-PLANNER-OUTCOME-SSOT-INSTRUCTIONS.md`
+- ねらい: single_planner の観測が planner outcome の facts だけに依存する状態へ統一
+- 完了: build_plan_with_facts を追加し、single_planner のタグ出力は outcome.facts 参照に収束
+- 検証: `cargo build --release` / `./tools/smokes/v2/run.sh --profile quick` / `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`
+
+## Verification (SSOT)
+
+- `cargo build --release`
+- `./tools/smokes/v2/run.sh --profile quick`
+- `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`