feat: create tm-core and apps/cli (#1093)

- add typescript
- add npm workspaces

packages/tm-core/src/providers/ai/index.ts

@@ -0,0 +1,14 @@
+/**
+ * @fileoverview Barrel export for AI provider modules
+ */
+
+export { BaseProvider } from './base-provider.js';
+export type { BaseProviderConfig, CompletionResult } from './base-provider.js';
+
+// Export provider factory when implemented
+// export { ProviderFactory } from './provider-factory.js';
+
+// Export concrete providers when implemented
+// export { AnthropicProvider } from './adapters/anthropic-provider.js';
+// export { OpenAIProvider } from './adapters/openai-provider.js';
+// export { GoogleProvider } from './adapters/google-provider.js';