refactor: move game-specific import logic into profiles; unblock Tomie import

- Add app/games: GameProfile base, registry, ReaderHooks and renpy/naninovel/
  tomie profiles. pipeline, preflight, detect and mods dispatch via the registry
- Move tomie_* converter modules to app/games/tomie and split out reader hooks,
  import, mod validation and known defects
- Tolerate the 31 authoring defects of the pinned Tomie build as report
  warnings (exact list, per-script counts); any new defect still blocks import
- Frontend: runtime registry (runtimes.ts) with lazy Tomie launcher
- Add profile/registry tests and docs/GAME_PROFILES.md; update IMPORT.md

Full media export of the original Tomie build is not yet verified.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

backend/app/games/tomie/mod.py

@@ -0,0 +1,28 @@
+"""Extra validation of edited Tomie mods (called from ``app.mods``)."""
+from app.games.tomie.defects import split_known
+from app.games.tomie.format import unpack_modules
+from app.games.tomie.validation import validate_runtime
+
+
+def validate_mod(game, scripts, manifest) -> None:
+    native = unpack_modules(scripts)
+    issues, _ = split_known(validate_runtime({"scripts": native}))
+    if issues:
+        raise ValueError(issues[0].message + " (" + issues[0].location + ")")
+    config = game.get("tomie")
+    if not isinstance(config, dict) or not isinstance(config.get("defaults"), dict) or not isinstance(config.get("function_data"), dict):
+        raise ValueError("Отсутствуют исходные настройки Tomie")
+    start = config.get("start", {})
+    script = native.get(start.get("script"))
+    if script is None or start.get("label", "") not in script["labels"]:
+        raise ValueError("Точка входа Tomie не найдена")
+    media = config.get("media")
+    if not isinstance(media, dict):
+        raise ValueError("Не найден индекс медиа Tomie")
+    for collection in ("backgrounds", "characters", "textures", "videos", "audio", "fonts"):
+        if not isinstance(media.get(collection), dict):
+            raise ValueError("Некорректный индекс медиа Tomie: " + collection)
+        for entry in media[collection].values():
+            path = entry.get("file") if isinstance(entry, dict) else entry
+            if not isinstance(path, str) or path not in manifest["files"]:
+                raise ValueError("Отсутствует медиа Tomie: " + str(path))