fix: IREN/ASTS/IRE stuck-pending + corridor feature

Fix stuck adapter_queue jobs (ASTS/IRE/IREN stuck pending forever):

1. fetchSpec early-return paths (cooldown checks) now update job status
   to 'backoff' with last_attempt set and 30s backoff_until, instead of
   returning without any status change. Prevents jobs from being
   re-processed every drain cycle indefinitely.

2. Wrap adapter.fetchOne() in 30s Promise.race timeout. A hung HTTP
   request no longer blocks the entire per-source promise chain
   forever, preventing all subsequent jobs for that source.

Also includes corridor/confluence feature, tiered quote schedules,
cache improvements, and HoldingsBookView refinements.

app/server/src/cache/CacheRepository.ts

@@ -8,6 +8,7 @@ import { db as defaultDb } from '../db/client.ts';
 import {
   CANDLE_FRESH_MS,
   quoteTtlMs,
+  tieredQuoteTtlMs,
   SYMBOL_META_INCOMPLETE_TTL_MS,
 } from '../queue/sourceRatePolicy.ts';
 import { KvReadCache } from './LruCache.ts';
@@ -190,6 +191,13 @@ export function needsQuoteRefresh(d: DatabaseSync, symbol: string, now = Date.no
   return tsAgeMs(row.observed_at, now) > quoteTtlMs(new Date(now));
 }
 
+/** Tier-aware quote freshness check. Portfolio (T0) gets the tightest TTL. */
+export function needsTieredQuoteRefresh(d: DatabaseSync, symbol: string, tier: number, now = Date.now()): boolean {
+  const row = d.prepare('SELECT observed_at FROM quotes WHERE symbol=?').get(symbol) as { observed_at: string } | undefined;
+  if (!row?.observed_at) return true;
+  return tsAgeMs(row.observed_at, now) > tieredQuoteTtlMs(tier, new Date(now));
+}
+
 /** True when symbol meta missing, incomplete (no name), or past weekly TTL. */
 export function needsSymbolMetaRefresh(d: DatabaseSync, symbol: string, now = Date.now()): boolean {
   const row = d.prepare('SELECT name, sector, updated_at FROM symbols WHERE symbol=?').get(symbol) as
@@ -617,6 +625,8 @@ export interface CacheRepository {
    * Safe to call on every Market Outlook / ticker context load.
    */
   ensureInDemand(symbol: string, tickerKind: TickerKind): Promise<void>;
+  /** Bump symbol to watched tier (2) on page view. Decays back after 10 min. */
+  bumpToWatched(symbol: string, tickerKind: TickerKind): Promise<void>;
   /** Permanent system pin (rotation universe, SPY, VIX) — survives unsubscribe. */
   pinSystemSymbol(symbol: string, tickerKind: TickerKind): Promise<void>;
   demandSet(): Promise<string[]>;
@@ -735,6 +745,18 @@ export class CacheRepositoryImpl implements CacheRepository {
     await this.queueIfNeeded(symbol);
   }
 
+  /** Bump a symbol to watched tier (2) on page view. The periodic tier
+   *  recompute decays it back to background after ~10 min of inactivity. */
+  async bumpToWatched(symbol: string, tickerKind: TickerKind): Promise<void> {
+    this.ensureDemandRow(symbol, tickerKind);
+    const now = new Date().toISOString();
+    // Only lower tier (raise priority) — never raise tier above current.
+    this._db.prepare(
+      "UPDATE symbol_demand SET tier = MIN(tier, 2), last_viewed_at = ?, in_demand = 1 WHERE symbol=?",
+    ).run(now, symbol);
+    await this.queueIfNeeded(symbol);
+  }
+
   async pinSystemSymbol(symbol: string, tickerKind: TickerKind): Promise<void> {
     this.ensureDemandRow(symbol, tickerKind);
     this._db.prepare(