Steve Yegge
a02729ea57
Complete bd-164: Fix timestamp-only export deduplication
- Add export_hashes table to track last exported content state
- Implement GetExportHash/SetExportHash in storage interface
- Update shouldSkipExport to use export_hashes instead of dirty_issues
- Call SetExportHash after successful export
- Clean up dirty_issues table (remove content_hash column)
- Simplify MarkIssueDirty functions (no longer compute hashes)
- Update markIssuesDirtyTx signature (remove store parameter)
Testing:
- Timestamp-only updates are skipped during export ✓
- Real content changes trigger export ✓
- export_hashes table populated correctly ✓
Fixes bd-159, bd-164