tw93 0597021fd4 fix(purge): save and restore caller traps to prevent state leak ...

- Save caller's INT/TERM traps before installing local cleanup trap
- Restore original traps after clean_project_artifacts completes
- Add test to verify trap restoration behavior

Fixes P3 issue: project.sh (line 825, 870)

2026-02-21 20:21:54 +08:00

19 KiB

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