feat: add live replays and PostgreSQL maintenance tools

- Stream compact live replay updates across local and clustered dashboards.
- Render responsive snake bodies as SVG paths with aligned custom icons.
- Add cache-busted assets, replay fallback routes, and live-follow playback.
- Support PostgreSQL benchmark sampling and idempotent SQLite migration.
- Add dry-run cleanup for old low-quality PostgreSQL replay payloads.
- Reward safe perimeter lanes and bump Prism to version 1.5.0.
- Add backend, migration, dashboard, and perimeter regression coverage.

server/services/dashboard_events.py

@@ -4,7 +4,7 @@ from typing import Awaitable, Callable
 import asyncio, inspect, json, time
 
 class DashboardEventsService:
-  def __init__(self, enabled:bool, redis_url:str, channel:str, event_origin:str, shutdown_event:asyncio.Event, on_notice:Callable[[str], Awaitable[None]], logger):
+  def __init__(self, enabled:bool, redis_url:str, channel:str, event_origin:str, shutdown_event:asyncio.Event, on_notice:Callable[[str, str|None], Awaitable[None]], logger):
     self.enabled = enabled
     self.redis_url = redis_url
     self.channel = channel
@@ -71,18 +71,19 @@ class DashboardEventsService:
         except Exception:
           pass
 
-  async def publish_notice(self, trigger:str) -> None:
+  async def publish_notice(self, trigger:str, game_id:str|None=None) -> None:
     if not self.enabled:
       return
     if self.redis is None:
       return
-    if trigger not in {'game_saved', 'stale_finalized', 'manual'}:
+    if trigger not in {'game_started', 'game_turn', 'game_saved', 'stale_finalized', 'manual'}:
       return
 
     message = {
       'type': 'dashboard_games_update_notice',
       'origin': self.event_origin,
       'trigger': trigger,
+      'game_id': game_id,
       'sent_at': int(time.time()),
     }
     try:
@@ -120,7 +121,11 @@ class DashboardEventsService:
           continue
 
         notice_trigger = str(payload.get('trigger') or 'game_saved')
-        await self.on_notice(notice_trigger)
+        notice_game_id_raw = payload.get('game_id')
+        notice_game_id = (
+          None if notice_game_id_raw is None else str(notice_game_id_raw)
+        )
+        await self.on_notice(notice_trigger, notice_game_id)
     except asyncio.CancelledError:
       pass
     except Exception as error: