prep for release

Author: 0xAHA

.github/workflows/hassfest.yaml

@@ -0,0 +1,14 @@
+name: Validate with hassfest
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: "0 0 * * *"
+
+jobs:
+  validate:
+    runs-on: "ubuntu-latest"
+    steps:
+      - uses: "actions/checkout@v3"
+      - uses: home-assistant/actions/hassfest@master

.github/workflows/validate.yaml

@@ -0,0 +1,19 @@
+name: Validate
+
+on:
+  push: 
+  pull_request:
+  schedule:
+    - cron: "0 0 * * *"
+  workflow_dispatch:
+
+jobs:
+  validate-hacs:
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: HACS validation
+        uses: "hacs/action@main"
+        with:
+          category: "integration"
+          repository: 0xAHA/Growatt_ModbusTCP
+          github_token: ${{ secrets.GITHUB_TOKEN }}

CHANGELOG.md

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+# Changelog
+
+All notable changes to the Growatt Modbus Integration will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.0.0] - 2025-09-28
+
+### Added
+
+- Initial release of Growatt Modbus Integration
+- Complete Home Assistant integration with config flow UI
+- Support for TCP and Serial Modbus connections
+- Multiple register mappings (MIN_SERIES_STANDARD, MIN_10000_VARIANT_A)
+- Comprehensive sensor coverage (PV, AC, Grid, Energy, Status)
+- Smart meter support for grid import/export monitoring
+- Intelligent power calculation with register/calculated fallbacks
+- Built-in Solar Bar Card with auto-entity detection
+- Connection testing during setup
+- Device and entity discovery
+- Energy Dashboard integration support
+- Configurable polling intervals and timeouts
+- Installation script and comprehensive documentation
+
+### Features
+
+- **Sensors**: 20+ sensors covering all inverter parameters
+- **Connection Types**: TCP (RS485-to-Ethernet) and Serial (USB-to-RS485)
+- **Register Maps**: Support for different Growatt model variants
+- **Smart Meter**: Automatic detection and grid flow monitoring
+- **Solar Bar Card**: Beautiful power distribution visualization
+- **Auto-Configuration**: Automatic entity detection for Solar Bar Card
+- **Services**: Manual data refresh, connection testing, register debugging
+- **HACS Support**: Full HACS integration compatibility
+
+### Solar Bar Card Features
+
+- Auto-detection of Growatt entities
+- Manual entity configuration support
+- Solcast integration support
+- Real-time power distribution visualization
+- Configurable display options (header, stats, legend)
+- Responsive design for all screen sizes
+
+### Hardware Support
+
+- Growatt MIN-3000TL-X through MIN-10000TL-X series
+- RS485-to-TCP converters (EW11, USR-W630, etc.)
+- USB-to-RS485 adapters (CH340, FTDI, etc.)
+- Smart meters connected to Growatt inverters
+
+### Technical Details
+
+- pymodbus 2.x and 3.x compatibility
+- Automatic pymodbus version detection
+- Rate limiting to respect inverter specifications
+- Robust error handling and recovery
+- Signed 16-bit value support for grid power
+- 32-bit energy total calculations
+- Device information extraction (serial, firmware)
+
+## [Unreleased]
+
+### Planned Features
+
+- Additional register mappings for other Growatt models
+- Battery storage system support (SPF/SPH series)
+- String-level monitoring for larger installations
+- Historical data export functionality
+- Advanced diagnostics and troubleshooting tools
+- Integration with other solar monitoring platforms
+
+### Under Consideration
+
+- MQTT discovery support
+- Telegram/Discord notification integration
+- Advanced energy flow diagrams
+- Cost/savings calculations
+- Weather correlation features
+- Performance analytics and reporting
+
+## Version Support Matrix
+
+
+| Integration Version | Home Assistant | pymodbus | Python |
+| --------------------- | ---------------- | ---------- | -------- |
+| 1.0.0               | 2023.1+        | 2.5+     | 3.7+   |
+
+## Breaking Changes
+
+None for this initial release.
+
+## Migration Guide
+
+This is the initial release, so no migration is required.
+
+## Known Issues
+
+### v1.0.0
+
+- Some MIN-6000 units may require register map adjustments
+- Serial connection may require dialout group membership on Linux
+- Very old firmware versions (<1.0) may have limited register support
+- Smart meter detection requires proper inverter configuration
+
+### Workarounds
+
+- Try different register maps if power readings are incorrect
+- Add user to dialout group: `sudo usermod -a -G dialout homeassistant`
+- Update inverter firmware if available
+- Check inverter menu for smart meter settings
+
+## Testing
+
+Each release is tested with:
+
+- Home Assistant Core (latest stable)
+- Home Assistant OS (latest stable)
+- Real MIN-10000 hardware with firmware 3.17
+- EW11 TCP converter and USB-RS485 adapters
+- Smart meter configurations (when available)
+
+## Support
+
+For issues, feature requests, and discussions:
+
+- GitHub Issues: Bug reports and feature requests
+- GitHub Discussions: General questions and community support
+- Home Assistant Community: Integration discussion thread
+
+## Contributors
+
+Thanks to all contributors who helped test, debug, and improve this integration:
+
+- Hardware testers with various Growatt models
+- Community members who provided register mappings
+- Beta testers who validated the release

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2025 0xAHA
+Copyright (c) [2025] [0xAHA]
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal