feat(providers): add trae/windsurf/zed/workbuddy/codebuddy-intl + icons

- New providers: trae, windsurf, zed, workbuddy, codebuddy-intl
  (registry + executor, wired into executors/index.js + registry/index.js)
- zed: port hosted cloud proxy from OmniRoute — RSA access-token → short-lived
  LLM token exchange (shared/zedAuth.js) + NDJSON {event}/{status}/[DONE]
  stream translated back to OpenAI via Claude/Gemini/OpenAI-Responses translators
- Provider icons (128x128 png) for the 5 new providers
- qoder + tokenRefresh provider tweaks

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

open-sse/executors/workbuddy.js

@@ -0,0 +1,31 @@
+import { DefaultExecutor } from "./default.js";
+
+/**
+ * WorkBuddyExecutor — talks to https://www.codebuddy.cn/v2/chat/completions
+ *
+ * WorkBuddy is a B2B/enterprise skin of CodeBuddy CN (same codebuddy.cn
+ * OpenAI-compatible gateway). Behavior mirrors CodeBuddyExecutor:
+ * gateway rejects non-stream requests, and reasoning must be surfaced via
+ * OpenAI-style reasoning_effort + reasoning_summary:"auto" (vendor-native
+ * thinking shapes are not honored by the unified gateway).
+ */
+export class WorkBuddyExecutor extends DefaultExecutor {
+  constructor() {
+    super("workbuddy");
+  }
+
+  transformRequest(model, body, stream, credentials) {
+    const transformed = super.transformRequest(model, body, stream, credentials);
+    transformed.stream = true;
+
+    const eff = transformed.reasoning_effort;
+    if (eff === "none" || eff === "off") {
+      delete transformed.reasoning_effort;
+    } else if (eff) {
+      transformed.reasoning_summary = "auto";
+    }
+    return transformed;
+  }
+}
+
+export default WorkBuddyExecutor;