v2.2-paseo-providers: Paseo provider stack + v2.2.1 pane-scoped chat fixes

Ship Paseo-equivalent provider snapshot, AgentComposerBar, ACP dispatch
rewrite with streaming/persist, permission prompts, and agent commands.
Follow-up: pane-scoped chat resolution, CoderMessageList tool timeline,
WS user-delta replace, and inference orphan tool_call stripping.
Archive openspec v2-2; update CHANGELOG and CURRENT.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/coder/src/services/qwen-settings.ts

@@ -0,0 +1,21 @@
+import { readFile } from 'node:fs/promises';
+import { join } from 'node:path';
+import { homedir } from 'node:os';
+import type { ProviderModel } from './provider-types.js';
+
+const QWEN_SETTINGS_PATH = join(homedir(), '.qwen', 'settings.json');
+
+export async function readQwenSettingsModels(): Promise<ProviderModel[]> {
+  try {
+    const raw = await readFile(QWEN_SETTINGS_PATH, 'utf8');
+    if (!raw.trim()) return [];
+    const settings = JSON.parse(raw) as {
+      modelProviders?: { openai?: Array<{ id: string }> };
+    };
+    const openaiModels = settings?.modelProviders?.openai;
+    if (!Array.isArray(openaiModels)) return [];
+    return openaiModels.map((m) => ({ id: m.id, label: m.id }));
+  } catch {
+    return [];
+  }
+}