File processing and local database storage enhancements

New

• 2.6.44 Keep runner processes alive for 2 minutes after their last deployment finishes, allowing subsequent deployments to reuse the warm process and skip initialization delays.

Fixed

• 2.6.42 Don't restart file-based deployments on start timeout
• 2.6.43 Fix local database housekeeping locking the database for too long by adding indices, row count limits, and batch deletion
• 2.6.46 Fix panic in file clip saving when input video is too short or truncated, and harden error handling across plugins to prevent runner crashes from unexpected pipeline states.