Pilot v2: Core implementation + battery telemetry

Major updates:
- Complete Rust rewrite (pilot-v2/) with working MQTT client
- Fixed MQTT event loop deadlock (background task pattern)
- Battery telemetry for Linux (auto-detected via /sys/class/power_supply)
- Home Assistant auto-discovery for all sensors and switches
- Comprehensive documentation (AVANCEMENT.md, CLAUDE.md, roadmap)
- Docker test environment with Mosquitto broker
- Helper scripts for development and testing

Features working:
✅ MQTT connectivity with LWT
✅ YAML configuration with validation
✅ Telemetry: CPU, memory, IP, battery (Linux)
✅ Commands: shutdown, reboot, sleep, screen (dry-run tested)
✅ HA discovery and integration
✅ Allowlist and cooldown protection

Ready for testing on real hardware.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

scripts/run_pilot.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+# Lance pilot-v2 en mode local avec config.yaml dans le dossier courant.
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR/pilot-v2"
+
+if [ ! -f "config.yaml" ]; then
+  if [ -f "../config.yaml" ]; then
+    cp ../config.yaml config.yaml
+    echo "config.yaml copie depuis la racine"
+  elif [ -f "../config/config.example.yaml" ]; then
+    cp ../config/config.example.yaml config.yaml
+    echo "config.yaml cree a partir de config/config.example.yaml"
+  fi
+fi
+
+cargo run