fix(joinir): stabilize phase1883 latch/entry preds

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

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+# Phase 29ae: JoinIR Regression Pack (docs-first)
+
+Goal: JoinIR の最小回帰セットを SSOT として固定する。
+
+## Regression pack (SSOT)
+
+- Pattern2: `phase29ab_pattern2_*`
+- Pattern6: `phase29ab_pattern6_*`
+- Pattern7: `phase29ab_pattern7_*`
+- Merge/Phi代表: `apps/tests/phase1883_nested_minimal.hako`（RC=9）
+
+## Commands
+
+- `./tools/smokes/v2/run.sh --profile integration --filter "phase29ab_pattern2_"`
+- `./tools/smokes/v2/run.sh --profile integration --filter "phase29ab_pattern6_"`
+- `./tools/smokes/v2/run.sh --profile integration --filter "phase29ab_pattern7_"`
+- `./tools/smokes/v2/run.sh --profile integration --filter "phase1883_"`
+
+## Status
+
+- phase1883: PASS（RC=9 を成功扱い）