feat: add repository cloning to project setup

Add project can clone repositories into a chosen folder
Command palette now opens the add project flow
Clone flow supports selecting Git identities

packages/ui/src/lib/opencode/client.ts

@@ -1415,6 +1415,24 @@ class OpencodeService {
     return result;
   }
 
+  async cloneRepository(input: { remoteUrl: string; destinationPath: string; gitIdentityId?: string | null }): Promise<{ success: boolean; path: string; output?: string }> {
+    const response = await fetch(`${this.baseUrl}/fs/clone`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify(input),
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Failed to clone repository' }));
+      throw new Error(error.error || 'Failed to clone repository');
+    }
+
+    return await response.json();
+  }
+
   async listLocalDirectory(directoryPath: string | null | undefined, options?: { respectGitignore?: boolean }): Promise<FilesystemEntry[]> {
     const normalizedDirectoryPath = typeof directoryPath === 'string' ? normalizeFsPath(directoryPath.trim()) : '';
     const cacheKey = `${normalizedDirectoryPath}|${options?.respectGitignore ? '1' : '0'}`;