Initial commit: jibo-llm hotword-triggered agent

Hotword-triggered LLM conversation loop for Jibo with tool-calling agent
loop, ESML expressive speech, web search/fetch, and per-conversation
abort handling.

.env.example

@@ -0,0 +1,9 @@
+# Jibo robot IP address
+JIBO_IP=192.168.1.217
+
+# LLM API configuration (OpenAI-compatible chat completions endpoint)
+# LLM_BASE_URL is the base URL *without* /chat/completions
+LLM_BASE_URL=https://api.openai.com/v1
+LLM_API_TOKEN=sk-your-api-key-here
+LLM_MODEL_ID=gpt-4o
+BRAVE_API_KEY=brave-api-key