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>

pilot-v2/Cargo.toml

@@ -0,0 +1,19 @@
+# Rust package metadata and dependencies for pilot v2.
+[package]
+name = "pilot-v2"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+anyhow = "1"
+thiserror = "1"
+serde = { version = "1", features = ["derive"] }
+serde_yaml = "0.9"
+serde_json = "1"
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["fmt", "env-filter"] }
+rumqttc = "0.24"
+tokio = { version = "1", features = ["rt-multi-thread", "macros", "time", "signal", "sync"] }
+sysinfo = "0.30"
+local-ip-address = "0.6"
+zbus = "3"