feat(ai): Implement Zod-based tool validation and improve Agent API

- Replace JSON Schema with Zod schemas for tool parameter definitions
- Add runtime validation for all tool calls at provider level
- Create shared validation module with detailed error formatting
- Update Agent API with comprehensive event system
- Add agent tests with calculator tool for multi-turn execution
- Add abort test to verify proper handling of aborted requests
- Update documentation with detailed event flow examples
- Rename generate.ts to stream.ts for clarity

packages/ai/package.json

@@ -19,10 +19,11 @@
 		"prepublishOnly": "npm run clean && npm run build"
 	},
 	"dependencies": {
-		"@anthropic-ai/sdk": "^0.60.0",
-		"@google/genai": "^1.15.0",
-		"chalk": "^5.5.0",
-		"openai": "^5.15.0"
+		"@anthropic-ai/sdk": "^0.61.0",
+		"@google/genai": "^1.17.0",
+		"chalk": "^5.6.2",
+		"openai": "^5.20.0",
+		"zod-to-json-schema": "^3.24.6"
 	},
 	"keywords": [
 		"ai",