Added tool registry as well as hardening of message sending, checking ACKs and retransmit

config.example.toml

@@ -4,6 +4,11 @@
 #   LORABOT_LLM__BASE_URL=http://llama:8080/v1
 #   LORABOT_MESHCORE__SERIAL_PORT=/dev/ttyACM0
 
+[logging]
+# DEBUG | INFO | WARNING | ERROR | CRITICAL (case-insensitive).
+# DEBUG adds per-iteration LLM request logs and Tavily request details.
+level = "INFO"
+
 [meshcore]
 serial_port = "/dev/ttyUSB0"
 baud_rate   = 115200
@@ -11,7 +16,7 @@ baud_rate   = 115200
 [llm]
 base_url                = "http://localhost:8080/v1"
 api_key                 = "not-needed"
-model                   = "llama-3.1-8b-instruct"
+model                   = "gemma-4-E4B"
 system_prompt           = "You are a concise assistant on a low-bandwidth mesh radio. Replies must be brief — under 180 bytes."
 temperature             = 0.7
 request_timeout_seconds = 60
@@ -23,6 +28,10 @@ sqlite_path = "data/lorabot.db"
 # MeshCore MAX_PACKET_PAYLOAD is 184 bytes. Lower this if your text-frame
 # headers further constrain the usable payload on your device.
 max_bytes = 184
+# Seconds to wait for an ACK before treating a chunk as failed.
+ack_timeout_seconds = 30
+# How many times to retry a chunk after failure (0 = no retries).
+send_retries = 1
 
 [web]
 # Built-in read-only web UI: stored conversations + live status.
@@ -39,3 +48,12 @@ interval_seconds = 3600
 at_startup       = true
 # Flood = multi-hop advert across the mesh. False = zero-hop (neighbors only).
 flood            = false
+
+# LLM tool calling. The weather tool (Open-Meteo, no key) is always on. Tools
+# in this section are optional and only registered when configured. Requires a
+# tool-capable model on the LLM server (Llama 3.1, Qwen, Hermes, …); models
+# without tool support will simply ignore them.
+[tools.tavily]
+# Web search + page extraction via https://tavily.com (free tier available).
+# Leave empty to disable both web_search and fetch_url tools.
+api_key = ""