feat: xAI image generate/edit, API key import, and per-provider timeouts

- Add dedicated xAI image adapter with generate + edit (multi-image) via
  /v1/images/generations and /v1/images/edits, plus aspect_ratio/resolution UI
- Support importing existing API keys and exposing connection api-key routes
- Add global/per-provider connect timeout overrides from settings
- Keep unrelated provider UX improvements on this branch; no Grok quota tracking

open-sse/executors/qoder.js

@@ -30,6 +30,7 @@ import { PROVIDERS } from "../config/providers.js";
 import { proxyAwareFetch } from "../utils/proxyFetch.js";
 import { SSE_DONE } from "../utils/sseConstants.js";
 import { FETCH_CONNECT_TIMEOUT_MS } from "../config/runtimeConfig.js";
+import { resolveProviderTimeoutMs } from "../services/providerTimeout.js";
 import {
   QODER_CHAT_URL_ENCODED,
   QODER_MODEL_MAP,
@@ -410,7 +411,7 @@ export class QoderExecutor extends BaseExecutor {
     };
 
     // Abort if upstream doesn't return response headers within connect timeout.
-    const timeoutMs = this.config?.timeoutMs || FETCH_CONNECT_TIMEOUT_MS;
+    const timeoutMs = await resolveProviderTimeoutMs(this.provider, this.config?.timeoutMs, FETCH_CONNECT_TIMEOUT_MS);
     const connectCtrl = new AbortController();
     const connectTimer = setTimeout(() => connectCtrl.abort(new Error("fetch connect timeout")), timeoutMs);
     const mergedSignal = signal ? AbortSignal.any([signal, connectCtrl.signal]) : connectCtrl.signal;