feat: add survey view with voting functionality and admin panel

- Implemented SurveyView.vue for displaying and managing polls, including voting, comments, and results.
- Added new database tables for vote polls, votes, and comments in migration script.
- Created unique lottery logic for handling unique item rewards based on voting.
- Developed unit tests for unique lottery functionality to ensure deterministic behavior and correct counting of occupied unique items.

docs/architecture/todo.md

@@ -60,6 +60,7 @@ Move items into the main docs once they are finalized.
 - [AI suggestion] Replace smoke/placeholder tests with concrete assertions for success/failure outcomes (e.g., 등용, NPC능동 invalid args, 출병 troop creation).
 - [AI suggestion] Document che*출병 parity gaps vs legacy (city state/term=43, fallback to che*이동 when friendly, nation.war/AllowWar check, post-war static events/unique-item lottery, missing route data when map/diplomacy not provided).
 - [AI suggestion] Verify that "이호경식" followed by "출병" is correctly blocked with the new reserved-turn overlay (diplomacy state sync).
+- [AI suggestion] Survey/unique lottery should account for auction/storage-held unique items once the inventory and auction models are finalized.
 
 ## Trigger System