fix: backfill symbol_demand for sidebar-added symbols + analyst ratings schema fix

- Add await ctx.cache.subscribe() to addSymbol mutation so symbols
  added via the sidebar get registered in symbol_demand and yfinance
  jobs are queued immediately
- Backfill PEP, WYNN, STZ, CELH into symbol_demand + adapter_queue
- Upgrade yahoo-finance2 3.15.3 -> 3.15.4 and pass validateResult:false
  to quoteSummary() to handle Yahoo schema drift
- Add error detail logging for analyst ratings schema failures
- Update .gitignore with common ignores

app/server/src/auth/__tests__/oauth.test.ts

@@ -133,7 +133,7 @@ describe('exchangeCode', () => {
 
     // The fake fetch: returns token on the POST call, userinfo on GET.
     const mockCalls: Array<{ url: string; init: RequestInit }> = [];
-    const fakeFetch = async (input: URL | RequestInfo, init?: RequestInit) => {
+    const fakeFetch = async (input: string | URL | Request, init?: RequestInit) => {
       const url = typeof input === 'string' ? input : input instanceof URL ? input.toString() : '';
       mockCalls.push({ url, init: init ?? {} });