docs: Update README: Add AIOS Refresh Command (#413)

* Fix

* Feat: Prioritize API Key from Config File

Problem: The system was using environment variables for API keys.
Solution: Changed the code to first check the config file for API keys. If not found, it falls back to environment variables.
Impact: Ensures API keys are managed centrally in the config file, improving flexibility and control.

* Update adapter.py

* fix: use PR code instead of main branch in workflow

Before: Workflow always used main branch code
After: Workflow uses PR code when testing PR

* Update test_ollama.yml

* Update test_ollama.yml

* Update test_ollama.yml

* Update README: Add AIOS Refresh Command

README.md

@@ -186,6 +186,10 @@ Alternatively, you can set them as environment variables directly:
 
 - `aios env list`: Show current environment variables, or show available API keys if no variables are set
 - `aios env set`: Show current environment variables, or show available API keys if no variables are set
+- `aios refresh`: Refresh AIOS configuration.
+  Reloads the configuration from aios/config/config.yaml.
+  Reinitializes all components without restarting the server.
+  The server must be running.
 
 When no environment variables are set, the following API keys will be shown:
 - `OPENAI_API_KEY`: OpenAI API key for accessing OpenAI services