Sight groups, DM reveal areas (cones), client-side image shrink for map upload

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HJhXuLD2Z6hv3Wqeq9UL9K

backend/app/main.py

@@ -674,7 +674,7 @@ def read_lobby(lid: str, user: dict = Depends(current_user)):
         lobby = _lobby_for(con, lid, user)
         is_dm = lobby["owner_id"] == user["id"]
         _ensure_colors(con, lid)
-        rows = con.execute("""SELECT m.user_id, m.character_id, m.color, m.char_mod, u.username, c.data FROM lobby_members m
+        rows = con.execute("""SELECT m.user_id, m.character_id, m.color, m.char_mod, m.vgroup, u.username, c.data FROM lobby_members m
                               JOIN users u ON u.id = m.user_id LEFT JOIN characters c ON c.id = m.character_id
                               WHERE m.lobby_id=? ORDER BY m.joined""", (lid,)).fetchall()
         combat = combat_view(con, lobby, is_dm)
@@ -685,7 +685,7 @@ def read_lobby(lid: str, user: dict = Depends(current_user)):
         card = _card(r["data"], rules) if r["data"] else None
         # The id is only given out where the viewer may open the full character (the DM sees all, a player only their own)
         members.append({"username": r["username"], "me": mine, "character": card, "color": r["color"],
-                        "mod": r["char_mod"] if (is_dm or mine) else None, "online": r["user_id"] in online,
+                        "mod": r["char_mod"] if (is_dm or mine) else None, "online": r["user_id"] in online, "vgroup": r["vgroup"] if is_dm else None,
                         "character_id": r["character_id"] if (is_dm or mine) and card else None})
     hidden = bool(lobby["diff_hidden"])
     diff = {"label": lobby["diff_label"], "mod": lobby["diff_mod"], "hidden": hidden}