Bump version to 1.2.0 and update documentation

Update README.md:
- Reflect current architecture (housekeeping, infrastructure, tools)
- Document all API endpoints
- Add environment variables reference
- Update test instructions

Update CHANGELOG.md:
- Document housekeeping API addition
- Document web scraper removal
- Document test coverage improvements

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

CHANGELOG.md

@@ -5,6 +5,42 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.2.0] - 2025-12-17
+
+### Added
+
+- **Housekeeping API** - Home Assistant integration for smart home control
+  - `GET /housekeeping/health` - HA connection status
+  - `GET /housekeeping/devices` - List controllable devices with optional domain/area filtering
+  - `GET /housekeeping/devices/{entity_id}` - Get device details
+  - `POST /housekeeping/devices/{entity_id}/control` - Control devices (turn_on, turn_off, toggle, set_brightness)
+  - `GET /housekeeping/scenes` - List available scenes
+  - `POST /housekeeping/scenes/{scene_id}/activate` - Activate a scene
+  - `GET /housekeeping/scripts` - List available scripts
+  - `POST /housekeeping/scripts/{script_id}/run` - Run a script
+  - `GET /housekeeping/automations` - List automations
+  - `POST /housekeeping/automations/{automation_id}/toggle` - Enable/disable automation
+  - `GET /housekeeping/history` - Query state history
+  - `GET /housekeeping/areas` - List rooms/areas
+- Home Assistant REST API client (`src/clients/homeassistant_client.py`)
+- Home Assistant configuration in credentials and settings
+- Comprehensive test suite with 65% code coverage (285 tests)
+- Tests for NPM client, Ollama client, AI client, OIDC authentication
+- Tests for infrastructure, health, tools, and housekeeping endpoints
+
+### Removed
+
+- **Web Scraper** - Entire web scraping module removed
+  - `src/web_scraper/` directory deleted
+  - `/web-scraper/scrape` endpoint removed
+  - Trafilatura and BeautifulSoup dependencies removed from scraping use
+
+### Changed
+
+- Updated README.md with current architecture and all endpoints
+- Tools controller now only contains DNS lookup functionality
+- Health controller endpoints list updated to reflect current features
+
 ## [1.1.2] - 2024-12-14
 
 ### Added