aisman

Managed session 76, Step 8: Unified sequence guard, S4 inline post-process UI, ProjectIssuesImplemented trigger & progress bars:
- The auto-select next same-session tab logic in processS4Task is superseded by new unified approach
- The _checkS4SequenceGuard helper added in step 4 only guards the S4 Process button
- The _sessionBlocked flag in renderNewOutputsList remains for UI display only
- Unified same-session sequence guard in processOutputFiles
- S4: suppress 'output file processed' dialog, show inline completion buttons
- SQL trigger on Issue to maintain Project.ProjectIssuesImplemented
- SQL script to backfill Project.ProjectIssuesImplemented
- Progress bar in project profile header (implemented vs total issues)
- Small progress bar in every project list item