refactor!: simplify runtime coordination #7

Keep financial ownership, atomic publication and refresh CAS.
Failed refresh leaves cookies untouched; logout still clears them.

Remove full-history candle prefetch and special metadata retries.
Use native Pino request context instead of parallel middleware.

BREAKING CHANGE: remove investment stateVersion, queued sync state,
and tbank-sync status progress/resources. Consumers must observe
resources through sync=observe with the updated frontend contract.

test/tbank-read-baseline.e2e-spec.ts

@@ -134,12 +134,6 @@ describe('T-Bank persisted read budget', () => {
         'bond',
         instruments.find((item) => item.uid === uid),
       ),
-    getLastPrice: (_token: string, uid: string) =>
-      counted('lastPrice', {
-        instrumentUid: uid,
-        price: { units: '100' },
-        time: { seconds: Date.UTC(2026, 7, 31) / 1000 },
-      }),
     getLastPrices: (_token: string, uids: string[]) =>
       counted(
         'lastPrices',