Reduce restart noise by ignoring known local smoke artifacts

Constraint: Limit this checkpoint to ignore rules and handoff notes; do not alter dataset contents
Rejected: Ignore broad data or cache trees immediately | This pass only suppresses confirmed local-generated noise with low risk
Confidence: high
Scope-risk: narrow
Directive: Keep adding ignore rules incrementally and only for artifacts proven to be local/generated noise
Tested: Confirmed the targeted .omx wait files and real-smoke CSV no longer appear in git status after the ignore update
Not-tested: Did not broaden ignore coverage to larger data/cache trees in this checkpoint

@@ -8,3 +8,8 @@
 !.codex/prompts/
 !.codex/prompts/**
 .venv
+
+# acr-engine local/generated noise
+acr-engine/.omx_wait_for_fma.log
+acr-engine/.omx_wait_for_fma.pid
+acr-engine/configs/manifests/examples/business_asset_export_real_smoke.csv

+## 2026-06-02 本地噪音忽略规则补齐 checkpoint
+
+完成项：
+- 已把以下本地生成噪音加入 `.gitignore`：
+  - `acr-engine/.omx_wait_for_fma.log`
+  - `acr-engine/.omx_wait_for_fma.pid`
+  - `acr-engine/configs/manifests/examples/business_asset_export_real_smoke.csv`
+
+结论：
+- 下次续跑时，`git status` 会少掉一批已知临时文件干扰。
+- 这次只收敛已确认的本地生成噪音，不改变任何数据内容。
+
 ## 2026-06-02 delivery handoff 命令格式统一 checkpoint
 
 完成项：

@@ -258,6 +258,7 @@
 - `docs/README.md` 已新增“新 session 最短阅读顺序”。
 - `docs/README.md` 已新增“新 session 最短可跑命令”。
 - `AGENT.md` 已同步最短可跑命令。
+- 已把本地 smoke 临时文件加入 `.gitignore`。
 
 ## 第一条可跑命令（重启后先验证）