Update project roadmap

docs/roadmap.md

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-# Project Roadmap
+# Roadmap
 
-## Phase 1 — Simulator
+This roadmap tracks planned Overland Controller development.
 
-Status: Complete
+The roadmap is flexible and may change as the project evolves.
 
-Features:
+## Phase 1: ESP32 Controller Foundation
-- Dashboard UI
-- Alarm System
-- Sensor Simulation
-- UART Communication Simulation
-- Protocol Layer
 
-## Phase 2 — Pico Dashboard
+Status: mostly complete
 
-Status: Pending
+Goals:
 
-Features:
+- Establish ESP32 firmware structure
-- 3.5" Touchscreen
+- Implement relay control
-- Native Dashboard UI
+- Implement status reporting
-- Sleep/Wake Functionality
+- Implement local configuration
+- Implement BMS telemetry
+- Implement generic relay/sensor naming
+- Establish HTTP and UART communication models
 
-## Phase 3 — ESP32 Controller
+Completed:
 
-Status: Pending
+- Relay control
+- JSON status API
+- Configuration persistence
+- Factory reset
+- BMS BLE telemetry
+- Cell voltage telemetry
+- Generic relay IDs
+- Generic temperature sensor IDs
+- HTTP API
+- Serial console commands
+- Documentation cleanup
 
-Features:
+Remaining:
-- Relay Control
-- UART Communications
-- Configuration Storage
 
-## Phase 4 — DS18B20 Sensors
+- Finish UART parity
+- Improve BLE setup reliability
+- Add stronger config validation
+- Add better command help output
 
-Status: Pending
+## Phase 2: UART Parity
 
-Features:
+Status: next priority
-- Fridge Monitoring
-- Rear Seat Monitoring
-- Outside Temperature
 
-## Phase 5 — JBD BLE Integration
+Goal:
 
-Status: Pending
+The Pico dashboard should be able to configure and control the ESP32 over UART without relying on WiFi.
 
-Features:
+Minimum UART v1 messages:
-- SOC
-- Voltage
-- Current
-- Remaining Ah
-- Cell Voltages
 
-## Phase 6 — Vehicle Telemetry
+- status_request
+- set_relay
+- config_request
+- config_device
+- config_relay
+- config_temp
+- config_bms
+- save_config
+- factory_reset
+- enter_bms_setup
+- scan_ble
+- select_bms
+- exit_bms_setup
 
-Status: Pending
+Expected result:
 
-Features:
+The Pico can:
+
+- Read full system status
+- Display current configuration
+- Control relays
+- Rename relays
+- Rename temperature sensors
+- Configure BMS
+- Run BMS setup workflow
+- Save configuration
+
+## Phase 3: Temperature Sensors
+
+Status: partially started
+
+Goals:
+
+- Complete DS18B20 hardware wiring
+- Add proper 4.7k pull-up resistor
+- Detect connected sensors
+- Report sensor addresses
+- Assign sensors to config slots
+- Persist sensor address assignments
+
+Planned serial commands:
+
+- scan temps
+- assign temp 1 <address>
+- clear temp 1
+
+Planned UART messages:
+
+- scan_temps
+- assign_temp
+- clear_temp
+
+Expected result:
+
+A user can connect multiple DS18B20 sensors, identify each one, name it, and save the configuration.
+
+## Phase 4: Pico Dashboard Bring-Up
+
+Status: not started on hardware
+
+Goals:
+
+- Bring up Pico 2 W
+- Bring up touchscreen
+- Establish UART connection to ESP32
+- Display status response
+- Display battery data
+- Display relay states
+- Display temperature data
+- Send relay commands
+
+Initial dashboard screens:
+
+- Main overview
+- Battery screen
+- Temperature screen
+- Relay control screen
+- Settings screen
+
+## Phase 5: Pico Configuration UI
+
+Status: planned
+
+Goals:
+
+- Configure device name
+- Configure relay names
+- Configure temperature names
+- Configure BMS
+- Run BLE scan workflow
+- Save config
+- Factory reset
+
+Expected result:
+
+A new installation can be configured from the dashboard without using a laptop.
+
+## Phase 6: Vehicle Inputs
+
+Status: planned
+
+Possible inputs:
+
+- Ignition signal
+- Vehicle battery voltage
 - OBD-II
-- CAN Bus
+- CAN bus
-- RPM
+- GPS
-- Coolant Temperature
-- Fuel Level
 
-## Phase 7 — Integrations
+Potential data:
 
-Status: Future
+- Ignition state
+- Engine RPM
+- Coolant temperature
+- Vehicle speed
+- Fuel level
+- Diagnostic trouble codes
+- Location
+- Trip data
+
+## Phase 7: Logging and History
+
+Status: planned
+
+Goals:
+
+- Log battery history
+- Log temperature history
+- Log relay events
+- Log alarm events
+- Show historical charts
+
+Possible storage:
+
+- ESP32 flash
+- SD card
+- External service
+- Future InfluxDB integration
+
+## Phase 8: Integrations
+
+Status: planned
+
+Potential integrations:
 
-Features:
 - MQTT
 - Home Assistant
 - Grafana
 - InfluxDB
+- Node-RED
+
+Design goal:
+
+Integrations should consume the same generic status/config model used by HTTP and UART.
+
+## Phase 9: Enclosure and Installation
+
+Status: planned
+
+Goals:
+
+- Design ESP32 enclosure
+- Design Pico dashboard enclosure
+- Design wiring harness
+- Document installation
+- Create BOM
+- Create printable STL files
+- Validate thermal and vibration behavior
+
+## Phase 10: Public Release
+
+Status: future
+
+Goals:
+
+- Clean documentation
+- Stable API
+- Stable UART protocol
+- Installation guide
+- Wiring guide
+- Build guide
+- Example configurations
+- Versioned releases
+
+Potential release name:
+
+    Overland Controller v1.0
+
+## Long-Term Ideas
+
+Potential future features:
+
+- OTA firmware updates
+- Multi-controller support
+- Expansion modules
+- Water tank monitoring
+- Inverter monitoring
+- Solar charge controller monitoring
+- Starlink diagnostics
+- Bluetooth sensor support
+- Mobile web dashboard
+- Plugin-style integrations