add code-first agent example and isolate core dependencies

docs/getting-started.md

@@ -57,6 +57,20 @@ cd exports/my_agent
 PYTHONPATH=core:exports python -m my_agent validate
 ```
 
+### Option 3: Manual Code-First (Minimal Example)
+
+If you prefer to start with code rather than CLI wizards, check out the manual agent example:
+
+```bash
+# View the minimal example
+cat core/examples/manual_agent.py
+
+# Run it (no API keys required)
+PYTHONPATH=core python core/examples/manual_agent.py
+```
+
+This demonstrates the core runtime loop using pure Python functions, skipping the complexity of LLM setup and file-based configuration.
+
 ## Project Structure
 
 ```