Progress on campaign manager.

 Summary of what got done two days ago:

Overlay context split into query_global / query_local — per-room overlay indices in dungeon prompt

• Stair markers assigned to rooms via geometry containment, get_room_at on TacticalController
• Village manager updated with same overlay registry pattern
• persist_response fixed — additive, no deletes, merge with append
• open_map_settings fixed — ConfigManager from self.db, .get('campaign_id')
• regenerate_tactical_map fixed — deletes all children of source marker, clears portal_to from both props and metadata, goes up level

Today: excise remaining metadata references, consolidate portal_to to properties directly everywhere.