Implement unlimited-depth tree library architecture for dev DDA.

Revert "Add zone-aware library organization for dev DDA uploads."

Add zone-aware library organization for dev DDA uploads.

Fix DDA dev bugs and polish from full review pass.

Add Phase 5 viewer modes and Phase 6 region review with dept export.

Add Phase 4 reports: PDF export, browser report page, and notification bell.

Deploy DDA jobs API, hierarchy panel, and region locate on dev.

Fix Run Detection: use /api/dda/detect/from-library and deploy compare UI.

Use local library_sources year folders instead of web upload library

Support 2GB GeoTIFF library uploads with streamed writes and progress UI

Phase 0 DDA: APP_MODE, image library API, GeoTIFF ingest, dev UI