Add ML dependencies for panel detection

- Add @techstark/opencv-js for OpenCV-based edge detection
- Add @tensorflow/tfjs for ML model inference
- Add @tensorflow-models/coco-ssd for object detection fallback
- All packages are lazy-loaded to optimize initial load time

package.json

@@ -18,7 +18,10 @@
     "htmx.org": "^2.0.8",
     "jszip": "3.10.1",
     "lunr": "^2.3.9",
-    "pdfjs-dist": "^5.6.205"
+    "pdfjs-dist": "^5.6.205",
+    "@techstark/opencv-js": "^4.12.0-release.1",
+    "@tensorflow/tfjs": "^4.22.0",
+    "@tensorflow-models/coco-ssd": "^2.2.3"
   },
   "devDependencies": {
     "@tailwindcss/forms": "^0.5.11",