feat(usage): add official subscription quota template with unified tier rendering

Changes:
- Add official_subscription template type for Claude/Codex/Gemini
- Replace implicit 'category=official auto-query' with explicit opt-in template
- Default disabled; users enable via usage script modal with configurable interval
- Unify tier→label mapping across subscription and script paths via labeled_tier_parts()
- Fix tray rendering: week aliases (seven_day/opus/sonnet) now use highest utilization
- Add depth guard: official_subscription checks enabled flag in query_provider_usage_inner
- Add cache invalidation symmetry: invalidate_subscription() for disabled providers
- i18n: add templateOfficialSubscription + hint in zh/en/ja/zh-TW

Backend (Rust):
- provider.rs: add TEMPLATE_TYPE_OFFICIAL_SUBSCRIPTION branch, flatten SubscriptionQuota→UsageData
- tray.rs: extract labeled_tier_parts() shared by both summary functions, use max_by for multi-alias groups
- usage_cache.rs: add invalidate_subscription() method
- Test coverage: add week-alias highest-utilization tests for both paths

Frontend (TypeScript):
- UsageScriptModal: add official_subscription to templates, auto-detect for official providers
- ProviderCard: gate useUsageQuery with !isOfficialSubscriptionUsage, pass autoQueryInterval to footer
- SubscriptionQuotaFooter: accept autoQueryInterval prop, default 0 (disabled)
- constants.ts: add TEMPLATE_TYPES.OFFICIAL_SUBSCRIPTION

Fixes tier rendering regression where:
- Claude/Codex: seven_day was missed (only weekly_limit matched) → lost 7-day window in tray
- Gemini: gemini_pro/flash/flash_lite fell through to fallback → leaked machine names
- Multi-window (opus+sonnet): find() took first, not worst → underestimated utilization and emoji color

All tests pass (cargo test + cargo clippy clean).

src/lib/query/subscription.ts

@@ -16,15 +16,24 @@ export function useSubscriptionQuota(
   appId: AppId,
   enabled: boolean,
   autoQuery = false,
+  autoQueryIntervalMinutes = 5,
 ) {
+  const refetchInterval =
+    autoQuery && autoQueryIntervalMinutes > 0
+      ? Math.max(autoQueryIntervalMinutes, 1) * 60 * 1000
+      : false;
+
   return useQuery({
     queryKey: subscriptionKeys.quota(appId),
     queryFn: () => subscriptionApi.getQuota(appId),
     enabled: enabled && ["claude", "codex", "gemini"].includes(appId),
-    refetchInterval: autoQuery ? REFETCH_INTERVAL : false,
-    refetchIntervalInBackground: autoQuery,
-    refetchOnWindowFocus: autoQuery,
-    staleTime: REFETCH_INTERVAL,
+    refetchInterval,
+    refetchIntervalInBackground: Boolean(refetchInterval),
+    refetchOnWindowFocus: Boolean(refetchInterval),
+    staleTime:
+      autoQueryIntervalMinutes > 0
+        ? Math.max(autoQueryIntervalMinutes, 1) * 60 * 1000
+        : REFETCH_INTERVAL,
     retry: 1,
   });
 }