Scrape: include libretro + OpenVGDB covers alongside IGDB

app/openvgdb.py

@@ -17,6 +17,7 @@ tags removed). The GUI reads this bundle with no network access.
 """
 import argparse
 import concurrent.futures
+import json
 import logging
 import os
 import re
@@ -94,6 +95,19 @@ def build_index(sqlite_path):
     return best
 
 
+def write_index(index, path=None):
+    """Persist {key: {"title", "url"}} so the GUI can show readable titles when
+    searching the offline bundle (see covers._search_openvgdb)."""
+    path = Path(path) if path else (config.COVERS_DIR / "openvgdb-index.json")
+    data = {k: {"title": t, "url": u} for k, (t, u, _r) in index.items()}
+    try:
+        path.parent.mkdir(parents=True, exist_ok=True)
+        path.write_text(json.dumps(data, ensure_ascii=False), encoding="utf-8")
+    except OSError as exc:  # noqa: BLE001
+        log.warning("could not write index %s: %s", path, exc)
+    return path
+
+
 def _existing_keys():
     """Titles already present in the bundle (for resume)."""
     if not BUNDLE.exists():
@@ -152,6 +166,7 @@ def scrape(limit=None, workers=8, rate=3.0):
 
     index = build_index(sqlite_path)
     log.info("indexed %d unique PSP covers", len(index))
+    write_index(index)
 
     existing = _existing_keys()
     todo = [(k, v) for k, v in sorted(index.items()) if k not in existing]