Harden raster detection manifest handoff

frontend/src/components/detection/DetectionLab.tsx

@@ -311,11 +311,20 @@ export function DetectionLab({
                 <span>CUDA</span>
                 <strong>{yoloPreflight.runtime.cuda_available === true ? 'available' : yoloPreflight.runtime.cuda_available === false ? 'not available' : 'not checked'}</strong>
               </div>
+              <div className={yoloPreflight.checks.manifest_valid ? 'lab-readiness-item lab-readiness-item-ready' : 'lab-readiness-item'}>
+                <span>Tile manifest validation</span>
+                <strong>{yoloPreflight.checks.manifest_valid === true ? 'valid' : yoloPreflight.checks.manifest_path_set ? 'not valid' : 'not provided'}</strong>
+              </div>
+              <div className={yoloPreflight.tile_count > 0 ? 'lab-readiness-item lab-readiness-item-ready' : 'lab-readiness-item'}>
+                <span>Tile count</span>
+                <strong>{yoloPreflight.tile_count} / {yoloPreflight.max_tiles}</strong>
+              </div>
             </div>
             <div className="entity-meta">
               <span>torch_version: {yoloPreflight.runtime.torch_version ?? 'n/a'}</span>
               <span>ultralytics_version: {yoloPreflight.runtime.ultralytics_version ?? 'n/a'}</span>
               <span>cuda_available: {String(yoloPreflight.runtime.cuda_available ?? 'unknown')}</span>
+              <span>will_run_inference: {String(yoloPreflight.will_run_inference)}</span>
               <span>YOLO_CONFIG_DIR: {yoloPreflight.runtime.yolo_config_dir ?? 'n/a'}</span>
               <span>model directory: {yoloPreflight.runtime.model_directory ?? 'n/a'}</span>
               <span>model_asset_id: {yoloPreflight.model_asset_id ?? 'n/a'}</span>
@@ -437,6 +446,13 @@ export function DetectionLab({
               />
             </label>
           ) : null}
+          {selectedDetectionModelId === 'yolo-configured' && detectionTileManifestPath.trim() ? (
+            <div className="linked-manifest-card">
+              <strong>Linked tile manifest</strong>
+              <p>{detectionTileManifestPath}</p>
+              <span>Refresh preflight after changing model asset or manifest path.</span>
+            </div>
+          ) : null}
           <button className="primary-action" type="button" onClick={onRunDetection} disabled={runningDetection || !detectionRunReady}>
             Run detection
           </button>