feat: OCR auto-saves GPS to asset + MSFS enrichment in detail view

OCR endpoint (/api/ocr) now auto-saves EXIF GPS from the photo
to the asset's latitude/longitude fields when they are blank,
so the first photo scan at a machine permanently records its location.

GET /api/assets/{id} now includes an 'msfs' block enriched from
the merged Dynamics 365 Field Service data (merged-assets.json)
loaded at server start (1,834 matched assets). Fields shown:
equipment_id, connect_id, compass_asset_number, manufacturer,
model_text, dex_model, install_date, software_version, etc.

Frontend updates:
- New 'Field Service Data' card in asset detail view when MSFS
  data is available (manufacturer, Connect ID, install date, etc.)
- '📍 GPS saved to asset' confirmation shown after OCR auto-save
- AppState.ocrGpsSaved flag to track the auto-save event

server.py

@@ -43,6 +43,27 @@ DB_PATH = os.environ.get("CANTEEN_DB_PATH", str(Path(__file__).parent / "assets.
 UPLOADS_DIR = Path(os.environ.get("CANTEEN_UPLOADS_DIR", str(Path(__file__).parent / "uploads")))
 STATIC_DIR = Path(__file__).parent / "static"
 
+# ─── MSFS Data (merged asset enrichment from Dynamics 365 Field Service) ───
+MSFS_DATA_PATH = os.environ.get(
+    "MSFS_DATA_PATH",
+    str(Path.home() / "projects/ms-field-service-extraction/web/static/data/merged-assets.json"),
+)
+_MSFS_LOOKUP: dict[str, dict] = {}  # keyed by canteen_machine_id
+_MSFS_BY_ID: dict[int, dict] = {}   # keyed by canteen_id (assets.id)
+if os.path.exists(MSFS_DATA_PATH):
+    try:
+        with open(MSFS_DATA_PATH, "r") as _f:
+            _msfs_all = _json.load(_f)
+        for _entry in _msfs_all.get("assets", []):
+            _mid = _entry.get("canteen_machine_id")
+            _cid = _entry.get("canteen_id")
+            if _mid:
+                _MSFS_LOOKUP[_mid] = _entry
+            if _cid:
+                _MSFS_BY_ID[_cid] = _entry
+    except Exception:
+        pass  # Non-fatal — MSFS enrichment just won't be available
+
 def _load_categories() -> set:
     """Load valid category names from the categories lookup table."""
     try:
@@ -1118,6 +1139,25 @@ def get_asset(asset_id: int):
         result["location_name"] = loc["name"] if loc else None
 
     conn.close()
+
+    # Enrich with MSFS data (from Dynamics 365 Field Service)
+    msfs = _MSFS_LOOKUP.get(result.get("machine_id", "")) or _MSFS_BY_ID.get(asset_id)
+    if msfs:
+        result["msfs"] = {
+            "equipment_id": msfs.get("msfs_equipment_id"),
+            "connect_id": msfs.get("msfs_connect_id"),
+            "compass_asset_number": msfs.get("msfs_compass_asset_number"),
+            "manufacturer": msfs.get("msfs_manufacturer"),
+            "model_text": msfs.get("msfs_model_text"),
+            "dex_model": msfs.get("msfs_dex_model"),
+            "install_date": msfs.get("msfs_install_date"),
+            "manufacture_date": msfs.get("msfs_manufacture_date"),
+            "software_version": msfs.get("msfs_software_version"),
+            "canteen_connect_guid": msfs.get("msfs_canteen_connect_guid"),
+            "account_name": msfs.get("msfs_account_name"),
+            "work_order_count": msfs.get("work_order_count", 0),
+        }
+
     return result
 
 
@@ -2135,6 +2175,27 @@ async def ocr_sticker(file: UploadFile = File(...), exif_data: str = Form(None))
 
     if exif_gps:
         result["exif_gps"] = exif_gps
+
+        # Auto-save GPS to asset if lat/lng is blank
+        machine_id = result.get("machine_id")
+        if machine_id:
+            try:
+                conn = get_db()
+                asset = conn.execute(
+                    "SELECT id, latitude, longitude FROM assets WHERE machine_id = ?",
+                    (machine_id,),
+                ).fetchone()
+                if asset and (asset["latitude"] is None or asset["longitude"] is None):
+                    conn.execute(
+                        "UPDATE assets SET latitude = ?, longitude = ?, updated_at = datetime('now') WHERE id = ?",
+                        (exif_gps["lat"], exif_gps["lng"], asset["id"]),
+                    )
+                    conn.commit()
+                    result["gps_saved"] = True
+                conn.close()
+            except Exception:
+                pass  # Non-critical — don't fail OCR if GPS save fails
+
     if saved_path:
         result["path"] = saved_path
     return result