Add raster tile detection handoff

frontend/src/components/datasets/DatasetDetailPanel.tsx

@@ -19,6 +19,7 @@ export interface DatasetDetailPanelProps {
   selectedRasterMetadata: RasterMetadataResponse | null
   selectedRasterStats: RasterStatsResponse | null
   rasterPreview: RasterPreviewResponse | null
+  latestRasterTileManifestPath: string
   rasterUnavailableMessage: string | null
   selectedClipAreaId: string
   selectedIntersectTargetId: string
@@ -57,6 +58,7 @@ export interface DatasetDetailPanelProps {
   onRunRasterReproject: () => void
   onRunRasterClip: () => void
   onRunRasterTile: () => void
+  onUseTileManifestForDetection: () => void
   onRunRasterNdvi: () => void
   onRunRasterNdwi: () => void
   onRunRasterNdbi: () => void
@@ -100,6 +102,7 @@ export function DatasetDetailPanel({
   selectedRasterMetadata,
   selectedRasterStats,
   rasterPreview,
+  latestRasterTileManifestPath,
   rasterUnavailableMessage,
   selectedClipAreaId,
   selectedIntersectTargetId,
@@ -138,6 +141,7 @@ export function DatasetDetailPanel({
   onRunRasterReproject,
   onRunRasterClip,
   onRunRasterTile,
+  onUseTileManifestForDetection,
   onRunRasterNdvi,
   onRunRasterNdwi,
   onRunRasterNdbi,
@@ -171,6 +175,7 @@ export function DatasetDetailPanel({
               selectedRasterMetadata={selectedRasterMetadata}
               selectedRasterStats={selectedRasterStats}
               rasterPreview={rasterPreview}
+              latestRasterTileManifestPath={latestRasterTileManifestPath}
               rasterUnavailableMessage={rasterUnavailableMessage}
               selectedClipAreaId={selectedClipAreaId}
               rasterTileSize={rasterTileSize}
@@ -203,6 +208,7 @@ export function DatasetDetailPanel({
               onRunRasterReproject={onRunRasterReproject}
               onRunRasterClip={onRunRasterClip}
               onRunRasterTile={onRunRasterTile}
+              onUseTileManifestForDetection={onUseTileManifestForDetection}
               onRunRasterNdvi={onRunRasterNdvi}
               onRunRasterNdwi={onRunRasterNdwi}
               onRunRasterNdbi={onRunRasterNdbi}

frontend/src/components/datasets/RasterControls.tsx

@@ -6,6 +6,7 @@ interface RasterControlsProps {
   selectedRasterMetadata: RasterMetadataResponse | null
   selectedRasterStats: RasterStatsResponse | null
   rasterPreview: RasterPreviewResponse | null
+  latestRasterTileManifestPath: string
   rasterUnavailableMessage: string | null
   selectedClipAreaId: string
   rasterTileSize: number
@@ -38,6 +39,7 @@ interface RasterControlsProps {
   onRunRasterReproject: () => void
   onRunRasterClip: () => void
   onRunRasterTile: () => void
+  onUseTileManifestForDetection: () => void
   onRunRasterNdvi: () => void
   onRunRasterNdwi: () => void
   onRunRasterNdbi: () => void
@@ -57,6 +59,7 @@ export function RasterControls({
   selectedRasterMetadata,
   selectedRasterStats,
   rasterPreview,
+  latestRasterTileManifestPath,
   rasterUnavailableMessage,
   selectedClipAreaId,
   rasterTileSize,
@@ -89,6 +92,7 @@ export function RasterControls({
   onRunRasterReproject,
   onRunRasterClip,
   onRunRasterTile,
+  onUseTileManifestForDetection,
   onRunRasterNdvi,
   onRunRasterNdwi,
   onRunRasterNdbi,
@@ -156,11 +160,14 @@ export function RasterControls({
           ))}
         </div>
         <div className="raster-manifest-handoff">
-          <span>Tile manifest handoff</span>
+          <span>Latest tile manifest</span>
           <p>
-            Generated tile manifests remain backend artifacts and are referenced by path in detection/segmentation requests; this panel only prepares
-            and explains the handoff.
+            {latestRasterTileManifestPath ||
+              'No tile manifest generated yet. Generate tiles before handing this raster to Detection Lab.'}
           </p>
+          <button type="button" onClick={onUseTileManifestForDetection} disabled={!latestRasterTileManifestPath}>
+            Use in Detection Lab
+          </button>
         </div>
       </section>
       <section className="raster-guardrail-surface" aria-label="Processing guardrails">