fix: Add missing tests directory and files

tests/unit/config.test.ts

@@ -0,0 +1,63 @@
+import { validateGlobalConfig, validateWorkspaceConfig } from '../../src/config';
+
+describe('validateGlobalConfig', () => {
+  it('should accept valid config', () => {
+    const config = {
+      workspacePath: './workspaces',
+      defaultBranch: 'main',
+      autoInstall: true,
+      templates: { default: '/templates/default' }
+    };
+    expect(() => validateGlobalConfig(config)).not.toThrow();
+  });
+
+  it('should use defaults for missing values', () => {
+    const config = {};
+    const validated = validateGlobalConfig(config);
+    expect(validated.workspacePath).toBe('./.agent-workspaces');
+    expect(validated.defaultBranch).toBe('main');
+    expect(validated.autoInstall).toBe(true);
+  });
+
+  it('should reject invalid workspace path', () => {
+    const config = { workspacePath: 123 };
+    expect(() => validateGlobalConfig(config)).toThrow();
+  });
+
+  it('should reject invalid autoInstall type', () => {
+    const config = { autoInstall: 'yes' };
+    expect(() => validateGlobalConfig(config)).toThrow();
+  });
+});
+
+describe('validateWorkspaceConfig', () => {
+  it('should accept valid workspace config', () => {
+    const config = {
+      agentName: 'test-agent',
+      branch: 'agent-test-agent',
+      createdAt: '2024-01-15T10:30:00Z',
+      mainBranch: 'main',
+      environment: { AGENT_ID: 'test-agent' }
+    };
+    expect(() => validateWorkspaceConfig(config)).not.toThrow();
+  });
+
+  it('should reject missing agent name', () => {
+    const config = {
+      branch: 'agent-test',
+      createdAt: new Date().toISOString(),
+      mainBranch: 'main'
+    };
+    expect(() => validateWorkspaceConfig(config)).toThrow();
+  });
+
+  it('should reject invalid date format', () => {
+    const config = {
+      agentName: 'test',
+      branch: 'agent-test',
+      createdAt: 'not-a-date',
+      mainBranch: 'main'
+    };
+    expect(() => validateWorkspaceConfig(config)).toThrow();
+  });
+});