fix: improve startup readiness performance

packages/vscode/src/bridge-system-runtime.ts

@@ -241,6 +241,32 @@ export async function handleSystemBridgeMessage(
       }
     }
 
+    case 'api:opencode/version': {
+      try {
+        const apiUrl = ctx?.manager?.getApiUrl();
+        if (!apiUrl) {
+          return { id, type, success: true, data: { version: null, error: 'OpenCode manager unavailable' } };
+        }
+        const base = `${apiUrl.replace(/\/+$/, '')}/`;
+        const response = await fetch(new URL('global/health', base).toString(), {
+          method: 'GET',
+          headers: { Accept: 'application/json', ...ctx?.manager?.getOpenCodeAuthHeaders() },
+        });
+        const health = await response.json().catch(() => null) as { version?: unknown; error?: unknown } | null;
+        if (!response.ok) {
+          const message = typeof health?.error === 'string' ? health.error : response.statusText || 'Failed to read OpenCode version';
+          return { id, type, success: true, data: { version: null, error: message } };
+        }
+        const version = typeof health?.version === 'string' && health.version.trim().length > 0
+          ? health.version.trim().replace(/^v/, '')
+          : null;
+        return { id, type, success: true, data: { version } };
+      } catch (error) {
+        const errorMessage = error instanceof Error ? error.message : String(error);
+        return { id, type, success: true, data: { version: null, error: errorMessage } };
+      }
+    }
+
     case 'api:session-activity:get': {
       return { id, type, success: true, data: getSessionActivitySnapshot() };
     }

packages/vscode/src/extension.ts

@@ -547,7 +547,7 @@ export async function activate(context: vscode.ExtensionContext) {
       };
 
       const probeTargets: Array<{ label: string; path: string; includeDirectory?: boolean; timeoutMs?: number }> = [
-        { label: 'health', path: '/global/health', includeDirectory: false },
+        { label: 'health', path: '/api/health', includeDirectory: false },
         { label: 'config', path: '/config', includeDirectory: true },
         { label: 'providers', path: '/config/providers', includeDirectory: true },
         // Can be slower on large configs; keep the probe from producing false negatives.

packages/vscode/src/opencode.ts

@@ -568,7 +568,7 @@ async function waitForReady(
         const timeout = setTimeout(() => controller.abort(), 3000);
 
         // OpenCode readiness check.
-        const url = new URL(`${baseUrl}/global/health`);
+        const url = new URL(`${baseUrl}/api/health`);
         const res = await fetch(url.toString(), {
           method: 'GET',
           headers: { Accept: 'application/json', ...authHeaders },