fix(runtime-fallback): detect Gemini quota errors in session.status retry events

When Gemini returns a quota exhausted error, OpenCode auto-retries and
fires session.status with type='retry'. The extractAutoRetrySignal
function requires BOTH 'retrying in' text AND a quota pattern to match,
but some providers (like Gemini) include only the error text in the
retry message without the 'retrying in' phrase.

Since status.type='retry' already confirms this is a retry event, the
fix adds a fallback check: if extractAutoRetrySignal fails, check the
message directly against RETRYABLE_ERROR_PATTERNS. This ensures quota
errors like 'exhausted your capacity' trigger the fallback chain even
when the retry message format differs from expected.

Fixes #2454

src/hooks/runtime-fallback/session-status-handler.ts

@@ -1,6 +1,6 @@
 import type { HookDeps } from "./types"
 import type { AutoRetryHelpers } from "./auto-retry"
-import { HOOK_NAME } from "./constants"
+import { HOOK_NAME, RETRYABLE_ERROR_PATTERNS } from "./constants"
 import { log } from "../../shared/logger"
 import { extractAutoRetrySignal } from "./error-classifier"
 import { createFallbackState } from "./fallback-state"
@@ -32,7 +32,14 @@ export function createSessionStatusHandler(
 
     const retryMessage = typeof status.message === "string" ? status.message : ""
     const retrySignal = extractAutoRetrySignal({ status: retryMessage, message: retryMessage })
-    if (!retrySignal) return
+    if (!retrySignal) {
+      // Fallback: status.type is already "retry", so check the message against
+      // retryable error patterns directly. This handles providers like Gemini whose
+      // retry status message may not contain "retrying in" text alongside the error.
+      const messageLower = retryMessage.toLowerCase()
+      const matchesRetryablePattern = RETRYABLE_ERROR_PATTERNS.some((pattern) => pattern.test(messageLower))
+      if (!matchesRetryablePattern) return
+    }
 
     const retryKey = `${extractRetryAttempt(status.attempt, retryMessage)}:${normalizeRetryStatusMessage(retryMessage)}`
     if (sessionStatusRetryKeys.get(sessionID) === retryKey) {