fa903b2b2c
Export removeSyncWithRetries from @oh-my-pi/pi-utils as a standalone function, then migrate the highest-impact fs.rmSync call sites: - test/helpers/temp-home-cleanup.ts: 2 fs.rmSync → removeSyncWithRetries (affects all tests using the cleanupTempHome helper) - test/core/apply-patch-regression.test.ts: 16 fs.rmSync → removeSyncWithRetries (the most fs.rmSync calls of any test file) removeSyncWithRetries retries on EBUSY/EPERM/ENOTEMPTY (40x25ms on Windows), matching TempDir.removeSync's retry logic. On Linux/macOS (CI) the retries are a no-op — fs.rmSync succeeds immediately.