feat(dashboard): auto-refresh after sync, configurable polling, extra filters

- Detect missed sync completions via last_run.run_id comparison
- Load polling interval from settings (dashboard_poll_seconds, default 5s)
- Add 1min/3min scheduler interval options
- Add 1zi/2zile period filter options
- New Dashboard settings card for polling interval

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/app/routers/sync.py

@@ -37,6 +37,7 @@ class AppSettingsUpdate(BaseModel):
     gomag_api_shop: str = ""
     gomag_order_days_back: str = "7"
     gomag_limit: str = "100"
+    dashboard_poll_seconds: str = "5"
 
 
 # API endpoints
@@ -600,6 +601,7 @@ async def get_app_settings():
         "gomag_api_shop": s.get("gomag_api_shop", "") or config_settings.GOMAG_API_SHOP,
         "gomag_order_days_back": s.get("gomag_order_days_back", "") or str(config_settings.GOMAG_ORDER_DAYS_BACK),
         "gomag_limit": s.get("gomag_limit", "") or str(config_settings.GOMAG_LIMIT),
+        "dashboard_poll_seconds": s.get("dashboard_poll_seconds", "5"),
     }
 
 
@@ -618,6 +620,7 @@ async def update_app_settings(config: AppSettingsUpdate):
     await sqlite_service.set_app_setting("gomag_api_shop", config.gomag_api_shop)
     await sqlite_service.set_app_setting("gomag_order_days_back", config.gomag_order_days_back)
     await sqlite_service.set_app_setting("gomag_limit", config.gomag_limit)
+    await sqlite_service.set_app_setting("dashboard_poll_seconds", config.dashboard_poll_seconds)
     return {"success": True}