{
  "title": "Fix Steam library hider crash on invalid AppIDs",
  "objective": "hide_other_games() crashes with RuntimeError 'JS evaluation error: Unknown JS error' because SetAppsAsHidden() throws in Steam's AddApps internals when fed AppIDs that are not recognised game entries (e.g. DLC/tool IDs returned by get_all_owned_app_ids via include_played_free_games). The fix makes the JS resilient via a safeHide() binary-search fallback that silently skips rejected IDs, and improves error reporting so future JS failures show the real exception message.",
  "acceptance_criteria": [
    "hide_other_games() completes without RuntimeError when owned list contains invalid AppIDs",
    "Valid game IDs are still hidden correctly",
    "Invalid/unrecognised AppIDs are silently skipped (not fatal)",
    "CDP exception messages include the actual JS error text instead of 'Unknown JS error'",
    "All 590 existing tests continue to pass at 100% coverage"
  ],
  "out_of_scope": [
    "Filtering invalid AppIDs on the Python side before passing to JS",
    "Changing which AppIDs get_all_owned_app_ids() returns"
  ],
  "verifier": "python -m pytest python_pkg/steam_backlog_enforcer/tests/ -x -q && pre-commit run --files python_pkg/steam_backlog_enforcer/library_hider.py"
}