Add comprehensive documentation and testing tools

- Update README with complete setup guide and all blueprint URLs
- Add PACKAGE_SETUP_GUIDE with step-by-step setup instructions
- Add ROOM_CONFIGURATION_GUIDE with bedroom, living room, and bathroom examples
- Add HARDWARE_TESTING_CHECKLIST for validating with real Inovelli switches
- Add CHANGELOG documenting v1.0.0 release
- Add validation script for automated YAML testing
- Add test configuration example for testing without hardware

CHANGELOG.md

@@ -0,0 +1,53 @@
+# Changelog
+
+All notable changes to the Adaptive Lighting Mode System will be documented in
+this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+
+## [1.0.0] - 2025-12-20
+
+### Added
+
+**Blueprints**:
+- `inovelli_mode_cycling.yaml` - Config button cycles through lighting modes
+  with LED feedback
+- `inovelli_button_actions.yaml` - Multi-tap brightness controls with
+  auto-reset
+- `presence_mode_reset.yaml` - Auto-reset modes and manual control when room
+  empty
+
+**Package Templates**:
+- `adaptive_lighting_global.yaml` - Shared mode definitions and color mappings
+- `adaptive_lighting_bedroom_template.yaml` - Complete bedroom example with 5
+  modes
+- `adaptive_lighting_living_room_template.yaml` - Living room example with
+  entertainment modes
+- `adaptive_lighting_simple_template.yaml` - Minimal template for simple rooms
+
+**Documentation**:
+- `PACKAGE_SETUP_GUIDE.md` - Setup instructions and version control guide
+- `ROOM_CONFIGURATION_GUIDE.md` - Room-by-room configuration examples
+- `HARDWARE_TESTING_CHECKLIST.md` - Comprehensive testing checklist
+- Updated `README.md` with system overview and quick start
+
+**Features**:
+- Room-specific mode definitions (Adaptive, Reading, Theater, Sleep, etc.)
+- Visual LED feedback using ROYGBIV color scheme
+- Weekend mode with automatic sunrise/sunset adjustments
+- Multi-tap button actions (boost, max, night light)
+- Presence-based auto-reset
+- Version-controlled package-based configuration
+
+### Technical Details
+
+- Zigbee2MQTT integration for Inovelli Blue VZM31-SN switches
+- Home Assistant Adaptive Lighting integration required
+- Package-based architecture for easy version control
+- Template-driven room setup for scalability
+
+### Known Limitations
+
+- Zigbee2MQTT only (Z-Wave JS requires different MQTT topics)
+- Settings from `adaptive_lighting.change_switch_settings` reset on HA restart
+- Requires manual Inovelli switch configuration (Smart Bulb Mode, buttonDelay)