diff --git a/CHANGELOG.md b/CHANGELOG.md
index a32e1518..a6b557b9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,13 @@
 
 # Changelog
 
+## Sprint 99 raster tile Detection Lab handoff (2026-06-23)
+
+- Surfaced the latest persisted `raster.tile` manifest path in the raster dataset inspector.
+- Added a direct Detection Lab handoff action that fills the selected raster dataset and tile manifest path from the existing raster tile job result.
+- Preserved existing raster, detection and segmentation API contracts; no AI inference, provider fetching, migrations or backend route changes were introduced.
+- Added regression coverage for the frontend handoff wiring.
+
 ## Sprint 98 demo raster workflow smoke (2026-06-23)
 
 - Added `scripts/verify_demo_raster_workflow.sh` to validate the browser-facing demo raster happy path: inspect, preview, stats and tile manifest generation.
diff --git a/backend/tests/test_sprint99_raster_ui_handoff.py b/backend/tests/test_sprint99_raster_ui_handoff.py
new file mode 100644
index 00000000..9445219d
--- /dev/null
+++ b/backend/tests/test_sprint99_raster_ui_handoff.py
@@ -0,0 +1,24 @@
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[2]
+
+
+def test_raster_tile_manifest_is_visible_and_can_handoff_to_detection_lab() -> None:
+    app = (ROOT / "frontend" / "src" / "App.tsx").read_text(encoding="utf-8")
+    hook = (ROOT / "frontend" / "src" / "hooks" / "useDatasetWorkflow.ts").read_text(encoding="utf-8")
+    detail_panel = (ROOT / "frontend" / "src" / "components" / "datasets" / "DatasetDetailPanel.tsx").read_text(encoding="utf-8")
+    raster_controls = (ROOT / "frontend" / "src" / "components" / "datasets" / "RasterControls.tsx").read_text(encoding="utf-8")
+
+    assert "latestRasterTileManifestPath" in hook
+    assert "extractRasterTileManifestPath" in hook
+    assert "setLatestRasterTileManifestPath(manifestPath)" in hook
+    assert "latestRasterTileManifestPath," in app
+    assert "onUseTileManifestForDetection: useRasterTileManifestForDetection" in app
+    assert "setDetectionTileManifestPath(manifestPath)" in app
+    assert "setSelectedDetectionDatasetId(selectedDataset.id)" in app
+    assert "latestRasterTileManifestPath" in detail_panel
+    assert "onUseTileManifestForDetection" in detail_panel
+    assert "Latest tile manifest" in raster_controls
+    assert "Use in Detection Lab" in raster_controls
+    assert "disabled={!latestRasterTileManifestPath}" in raster_controls
diff --git a/docs/CODEX_EXECUTION_LOG.md b/docs/CODEX_EXECUTION_LOG.md
index 66da1c69..edb4491a 100644
--- a/docs/CODEX_EXECUTION_LOG.md
+++ b/docs/CODEX_EXECUTION_LOG.md
@@ -1,3 +1,32 @@
+## Sprint 99 raster tile Detection Lab handoff (2026-06-23)
+
+Changed:
+- Added latest raster tile manifest tracking to `frontend/src/hooks/useDatasetWorkflow.ts` from persisted `raster.tile` job results and direct tile generation responses.
+- Surfaced the latest manifest path in `frontend/src/components/datasets/RasterControls.tsx`.
+- Added a `Use in Detection Lab` handoff that fills the selected raster dataset and tile manifest path in the existing Detection Lab state.
+- Updated `frontend/src/components/datasets/DatasetDetailPanel.tsx`, `frontend/src/App.tsx`, `frontend/README.md` and `CHANGELOG.md`.
+- Added `backend/tests/test_sprint99_raster_ui_handoff.py`.
+
+Validation:
+- RED: `python -m pytest backend\tests\test_sprint99_raster_ui_handoff.py -q` failed before implementation because the raster tile manifest state and handoff wiring did not exist.
+- `python -m pytest backend\tests\test_sprint99_raster_ui_handoff.py -q` passed.
+- `cd frontend && npm run typecheck` passed.
+- `python -m pytest backend\tests\test_sprint99_raster_ui_handoff.py backend\tests\test_sprint95_raster_pipeline_hardening.py backend\tests\test_sprint28_dataset_workflow_hook.py -q` passed: 6 tests.
+- `cd frontend && npm run build` passed.
+- `python -m compileall backend/app` passed.
+- `python -m pytest -q` from `backend/` passed: 322 tests.
+- `bash scripts/run_readiness_check.sh` passed.
+- `cd backend && python -m alembic heads` passed: `202606120900 (head)`.
+- `cd backend && python -m alembic upgrade head --sql` passed.
+- `bash -n scripts/live_migration_smoke.sh` passed.
+
+Limitations:
+- Frontend handoff only; no API contract, migration, provider fetching, AI inference or model behavior changes.
+- The Detection Lab still follows the existing model availability and explicit-run constraints.
+
+Next recommended pass:
+- Run full readiness, redeploy, then validate the demo raster tile flow and Detection Lab prefill live on `http://192.168.10.150:1202`.
+
 ## Sprint 98 demo raster workflow smoke (2026-06-23)
 
 Changed:
diff --git a/frontend/README.md b/frontend/README.md
index 5b4c71b2..6d4322b0 100644
--- a/frontend/README.md
+++ b/frontend/README.md
@@ -277,6 +277,7 @@ AI Lab run controls explicitly explain when no raster dataset is available, inst
 - When the Map workspace has no active result layer, it lists ready vector/GeoJSON datasets as direct quick actions so populated demo projects can jump straight from the empty state to map inspection.
 - The Data catalog shows a compact selected/reference/candidate/source summary and scan-friendly badges. Persisted `reference` datasets are shown as Reference, non-reference vector/GeoJSON layers are shown as QA Candidates for workbench scanning, and raster/other uploads remain Source.
 - Dataset cards explain the recommended next action and use compact two-line action buttons for inspect, map, export/QA and metadata refresh. Disabled actions keep a visible reason, such as `Vector/GeoJSON only`.
+- Raster controls show the latest generated tile manifest path from persisted `raster.tile` jobs and can hand that path directly to Detection Lab with the selected raster dataset.
 - The QA/QC workspace shows candidate/reference handoff cards and resolves persisted quality-check dataset IDs back to dataset names when the datasets are loaded in the current project context.
 - The QA/QC workspace includes a selected-check evidence drilldown with candidate/reference provenance, false-positive/negative metric evidence, map handoff context and parameters/findings JSON.
 
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index bc87dc4e..ccb73835 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -79,6 +79,7 @@ function App(): JSX.Element {
     datasetContent,
     jobs,
     rasterPreview,
+    latestRasterTileManifestPath,
     selectedIntersectTargetId,
     selectedClipAreaId,
     rasterTileSize,
@@ -254,6 +255,15 @@ function App(): JSX.Element {
     loadProjectData,
     loadQualityChecks,
   })
+  const useRasterTileManifestForDetection = () => {
+    const manifestPath = latestRasterTileManifestPath.trim()
+    if (!manifestPath || !selectedDataset || selectedDataset.dataset_type !== 'raster') {
+      return
+    }
+    setDetectionTileManifestPath(manifestPath)
+    setSelectedDetectionDatasetId(selectedDataset.id)
+    setActiveWorkspace('ai')
+  }
   const {
     segmentationModels,
     loadingSegmentationModels,
@@ -949,6 +959,7 @@ function App(): JSX.Element {
               selectedRasterMetadata,
               selectedRasterStats,
               rasterPreview,
+              latestRasterTileManifestPath,
               rasterUnavailableMessage,
               selectedClipAreaId,
               selectedIntersectTargetId,
@@ -987,6 +998,7 @@ function App(): JSX.Element {
               onRunRasterReproject: runRasterReproject,
               onRunRasterClip: runRasterClip,
               onRunRasterTile: runRasterTile,
+              onUseTileManifestForDetection: useRasterTileManifestForDetection,
               onRunRasterNdvi: runRasterNdvi,
               onRunRasterNdwi: runRasterNdwi,
               onRunRasterNdbi: runRasterNdbi,
diff --git a/frontend/src/components/datasets/DatasetDetailPanel.tsx b/frontend/src/components/datasets/DatasetDetailPanel.tsx
index 835bcc1b..ba7365f6 100644
--- a/frontend/src/components/datasets/DatasetDetailPanel.tsx
+++ b/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}
diff --git a/frontend/src/components/datasets/RasterControls.tsx b/frontend/src/components/datasets/RasterControls.tsx
index 7bafc944..f7d57142 100644
--- a/frontend/src/components/datasets/RasterControls.tsx
+++ b/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">
diff --git a/frontend/src/hooks/useDatasetWorkflow.ts b/frontend/src/hooks/useDatasetWorkflow.ts
index 658dc620..da60733e 100644
--- a/frontend/src/hooks/useDatasetWorkflow.ts
+++ b/frontend/src/hooks/useDatasetWorkflow.ts
@@ -27,6 +27,15 @@ function toRasterMetadata(metadata: Record<string, unknown> | null | undefined):
   return metadata as unknown as RasterMetadataResponse
 }
 
+function extractRasterTileManifestPath(job: JobRead | null | undefined): string {
+  const result = job?.result_json
+  if (!result) {
+    return ''
+  }
+  const manifestPath = result.manifest_path
+  return typeof manifestPath === 'string' ? manifestPath : ''
+}
+
 export function useDatasetWorkflow({
   selectedProjectId,
   areas,
@@ -43,6 +52,7 @@ export function useDatasetWorkflow({
   const [datasetContent, setDatasetContent] = useState<GeoJSON.FeatureCollection | null>(null)
   const [jobs, setJobs] = useState<JobRead[]>([])
   const [rasterPreview, setRasterPreview] = useState<RasterPreviewResponse | null>(null)
+  const [latestRasterTileManifestPath, setLatestRasterTileManifestPath] = useState('')
   const [selectedIntersectTargetId, setSelectedIntersectTargetId] = useState('')
   const [selectedClipAreaId, setSelectedClipAreaId] = useState('')
   const [rasterTileSize, setRasterTileSize] = useState(512)
@@ -100,6 +110,10 @@ export function useDatasetWorkflow({
   const loadDatasetJobs = async (projectId: string, datasetId: string) => {
     const response = await jobsApi.list(projectId, { dataset_id: datasetId, limit: 20, offset: 0 })
     setJobs(response.items)
+    const latestRasterTileJob = response.items.find(
+      (job) => job.job_type === 'raster.tile' && extractRasterTileManifestPath(job),
+    )
+    setLatestRasterTileManifestPath(extractRasterTileManifestPath(latestRasterTileJob))
   }
 
   const loadDatasetDetails = async (projectId: string, dataset: DatasetCreateResponse) => {
@@ -111,6 +125,7 @@ export function useDatasetWorkflow({
     setSelectedRasterStats(null)
     setDatasetContent(null)
     setRasterPreview(null)
+    setLatestRasterTileManifestPath('')
     setSelectedDatasetId(dataset.id)
     setJobs([])
     try {
@@ -352,12 +367,17 @@ export function useDatasetWorkflow({
       return
     }
     try {
-      await datasetsApi.rasterTile(selectedProjectId, selectedDatasetId, {
+      const job = await datasetsApi.rasterTile(selectedProjectId, selectedDatasetId, {
         tile_size: rasterTileSize,
         overlap: rasterTileOverlap,
         output_name: rasterTileOutputName || undefined,
       })
+      const manifestPath = extractRasterTileManifestPath(job)
+      setLatestRasterTileManifestPath(manifestPath)
       await refreshSelectedDatasetAfterJob()
+      if (manifestPath) {
+        setLatestRasterTileManifestPath(manifestPath)
+      }
       setDatasetDetailError(null)
     } catch (error) {
       setDatasetDetailError(formatError(error, 'Raster tile failed'))
@@ -444,6 +464,7 @@ export function useDatasetWorkflow({
     setSelectedRasterStats(null)
     setDatasetContent(null)
     setRasterPreview(null)
+    setLatestRasterTileManifestPath('')
     setJobs([])
   }
 
@@ -456,6 +477,7 @@ export function useDatasetWorkflow({
     datasetContent,
     jobs,
     rasterPreview,
+    latestRasterTileManifestPath,
     selectedIntersectTargetId,
     selectedClipAreaId,
     rasterTileSize,