Fix Windows AI model selection

Fix the Windows issue where AI models could not be selected.

Author: lengyuqu

components/AIChatSidePanelHelpers.ts

@@ -22,7 +22,9 @@ export function isCopilotAgentConfig(agent?: ExternalAgentConfig): boolean {
     getExternalAgentSdkBackend(agent),
   ]
     .filter((value): value is string => typeof value === 'string' && value.length > 0)
-    .map((value) => value.split('/').pop()?.toLowerCase() ?? value.toLowerCase());
+    // Split on both separators so Windows command paths (e.g. "...\\copilot.exe")
+    // reduce to their basename rather than staying as the full path.
+    .map((value) => value.split(/[\\/]/).pop()?.toLowerCase() ?? value.toLowerCase());
   return tokens.some((token) => token.includes('copilot'));
 }
 

infrastructure/ai/types.test.ts

@@ -2,6 +2,7 @@ import test from 'node:test';
 import assert from 'node:assert/strict';
 
 import {
+  CLAUDE_MODEL_PRESETS,
   CODEBUDDY_MODEL_PRESETS,
   CODEX_MODEL_PRESETS,
   getAgentModelPresets,
@@ -19,3 +20,14 @@ test('getAgentModelPresets keeps Codex presets separate from CodeBuddy presets',
   assert.deepEqual(getAgentModelPresets('codex'), CODEX_MODEL_PRESETS);
   assert.notDeepEqual(CODEBUDDY_MODEL_PRESETS, CODEX_MODEL_PRESETS);
 });
+
+test('getAgentModelPresets resolves Windows command paths with backslashes', () => {
+  assert.deepEqual(
+    getAgentModelPresets('C\\Users\\foo\\AppData\\Roaming\\npm\\codex.cmd'),
+    CODEX_MODEL_PRESETS,
+  );
+  assert.deepEqual(
+    getAgentModelPresets('C\\Program Files\\nodejs\\claude.exe'),
+    CLAUDE_MODEL_PRESETS,
+  );
+});

infrastructure/ai/types.ts

@@ -477,7 +477,11 @@ export const CODEBUDDY_MODEL_PRESETS: AgentModelPreset[] = [
 
 export function getAgentModelPresets(agentCommand?: string): AgentModelPreset[] {
   if (!agentCommand) return [];
-  const basename = agentCommand.split('/').pop()?.toLowerCase() ?? '';
+  // Split on both POSIX (/) and Windows (\) separators so command paths like
+  // "C:\\Users\\foo\\codex.cmd" resolve to the right basename. Splitting only
+  // on "/" leaves the full path intact on Windows, which never matches the
+  // preset prefixes below and yields an empty list (presets silently lost).
+  const basename = agentCommand.split(/[\\/]/).pop()?.toLowerCase() ?? '';
   if (basename.startsWith('claude')) return CLAUDE_MODEL_PRESETS;
   if (basename.startsWith('codex')) return CODEX_MODEL_PRESETS;
   if (basename.startsWith('cursor')) return CURSOR_MODEL_PRESETS;

package-lock.json

@@ -115,7 +115,7 @@
     "@anthropic-ai/claude-agent-sdk": "^0.3.161",
     "@cursor/sdk": "^1.0.18",
     "@github/copilot-sdk": "1.0.0",
-    "@tencent-ai/agent-sdk": "^0.3.169",
+    "@tencent-ai/agent-sdk": "^0.3.173",
     "@vscode/windows-process-tree": "^0.7.0"
   },
   "overrides": {