[TASK] ResourceLockService protocol + impl via NSRunningApplication + proc_listpids

[kirich1409]

Context

Quiescence checks without spawning lsof (P5). NSRunningApplication.runningApplications(withBundleIdentifier:) for bundle checks; proc_listpids + proc_pidinfo for open-file checks, batched.

Acceptance criteria

• isProcessRunning(bundleID/prefix) uses NSRunningApplication.
• isPathBusy(URL) batch via proc_listpids.
• ProcessPredicate enum (noProcessWithBundleID, noProcessWithBundleIDPrefix, noLaunchdService, noOpenHandleToPath, noGitOperationInWorktree).

Files to touch (estimate)

best-effort estimate; agent refines during implementation

Implementation notes

• See research report §S11, §P5.

Dependencies

None.

Safety checklist

See .github/ISSUE_TEMPLATE/task.yml — tick applicable invariants in the issue if any destructive path is touched.

Definition of Done

• Acceptance criteria satisfied and verifiable
• Tests added or updated
• No build / lint / test regressions
• Self-review against research-report invariants
• Code review approved