Implement legal terms, Android client compatibility and more

backend/services/main/public_chat_config.py

@@ -0,0 +1,30 @@
+"""
+Server-side metadata for the instance public chat (title, bio).
+"""
+
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from typing import TypedDict
+
+_STATIC_PROFILE_PATH = Path(__file__).resolve().parent / "static" / "public_chat_profile.json"
+
+
+class PublicChatStaticProfile(TypedDict):
+    id: str
+    title: str
+    bio: str
+
+
+def load_public_chat_static_profile() -> PublicChatStaticProfile:
+    if not _STATIC_PROFILE_PATH.is_file():
+        raise FileNotFoundError(f"public chat profile config missing: {_STATIC_PROFILE_PATH}")
+    with _STATIC_PROFILE_PATH.open("r", encoding="utf-8") as f:
+        data = json.load(f)
+    chat_id = str(data.get("id", "")).strip()
+    title = str(data.get("title", "")).strip()
+    bio = str(data.get("bio", "")).strip()
+    if not chat_id or not title:
+        raise ValueError("public chat profile config must include non-empty id and title")
+    return PublicChatStaticProfile(id=chat_id, title=title, bio=bio)