{"version":"2.0.66","anchor":"pid-based-version-locking","canonical_anchor":"pid-based-version-locking","heading":"PID-Based Version Locking","tier":null,"area":null,"scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.0.66\/e\/pid-based-version-locking","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.0.66","markdown":"### PID-Based Version Locking\n\n**What:** More reliable version lock system that tracks process IDs instead of just file modification times. **Details:**\n\n- Detects if locking process is actually running\n- Better stale lock cleanup on startup\n- Enhanced error reporting showing which PID holds a lock\n- Automatic cleanup of locks from crashed processes\n- Feature-flagged via `tengu_pid_based_version_locking`\n- **Evidence**: `ai()` at line 397742, `K91()` at line 397747, `V91()` cleanup at line 397896"}