Upgrade async GPU analysis and workbench UX

backend/README.md

@@ -142,6 +142,7 @@ bash scripts/live_migration_smoke.sh
   - `GET /api/v1/detection/models`
   - `GET /api/v1/detection/model-assets`
   - `POST /api/v1/detection/run`
+  - `POST /api/v1/detection/run-async` (production browser path)
   - `GET /api/v1/detection/runs/{analysis_run_id}`
   - `GET /api/v1/detection/runs/{analysis_run_id}/detections`
 - YOLO/PyTorch real inference is not enabled in Sprint 8.
@@ -184,6 +185,7 @@ bash scripts/live_migration_smoke.sh
 - Added segmentation endpoints:
   - `GET /api/v1/segmentation/models`
   - `POST /api/v1/segmentation/run`
+  - `POST /api/v1/segmentation/run-async` (production browser path)
   - `GET /api/v1/segmentation/runs`
   - `GET /api/v1/segmentation/runs/{analysis_run_id}`
   - `GET /api/v1/segmentation/runs/{analysis_run_id}/segmentations`
@@ -191,6 +193,11 @@ bash scripts/live_migration_smoke.sh
   - `POST /api/v1/segmentation/runs/{analysis_run_id}/qa/reference`
 - Real SAM and YOLO-seg inference are not enabled in Sprint 9.
 - Mask paths are provenance/debug artifacts; persisted PostGIS geometry is authoritative for QA, map display and GeoJSON.
+- Current configured detection and segmentation run through the async analysis
+  worker (`GEOINTEL_ANALYSIS_WORKER_ENABLED`) and are followed through
+  `GET /api/v1/projects/{project_id}/jobs/{job_id}`. The Unraid profile sets
+  `YOLO_REQUIRE_CUDA=true`, so both pipelines fail closed instead of silently
+  falling back from NVIDIA CUDA to CPU.
 
 ## Sprint 17 additions
 - Added export foundation backed by the existing `exports` table.