Optimize auto-flush by tracking which issues have changed instead of
exporting the entire database on every flush. For large projects with
1000+ issues, this provides significant performance improvements.
Changes:
- Add dirty_issues table to schema with issue_id and marked_at columns
- Implement dirty tracking functions in new dirty.go file:
* MarkIssueDirty() - Mark single issue as needing export
* MarkIssuesDirty() - Batch mark multiple issues efficiently
* GetDirtyIssues() - Query which issues need export
* ClearDirtyIssues() - Clear tracking after successful export
* GetDirtyIssueCount() - Monitor dirty issue count
- Update all CRUD operations to mark affected issues as dirty:
* CreateIssue, UpdateIssue, DeleteIssue
* AddDependency, RemoveDependency (marks both issues)
* AddLabel, RemoveLabel, AddEvent
- Modify export to support incremental mode:
* Add --incremental flag to export only dirty issues
* Used by auto-flush for performance
* Full export still available without flag
- Add Storage interface methods for dirty tracking
Performance impact: With incremental export, large databases only write
changed issues instead of regenerating entire JSONL file on every
auto-flush.
Closes bd-39
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Co-Authored-By: Claude <noreply@anthropic.com>