Add changelog, integration icon, and logo for OpenClaw Home Assistant Integration

CHANGELOG.md

@@ -0,0 +1,44 @@
+# Changelog
+
+All notable changes to the OpenClaw Home Assistant Integration will be documented in this file.
+
+## [0.1.2] - 2026-02-20
+
+### Fixed
+- Removed non-existent `/api/status` and `/api/sessions` gateway endpoints that caused
+  the integration to receive HTML pages instead of JSON, resulting in `ContentTypeError`
+  on every poll and a failed config flow connection check.
+- `async_check_connection()` now probes `/v1/models` (the only reliable GET endpoint on
+  the gateway) instead of the missing `/api/status`.
+
+### Changed
+- `DataUpdateCoordinator` now performs a single `/v1/models` request per poll cycle
+  instead of three separate requests (`/api/status`, `/api/sessions`, `/v1/models`).
+- `DATA_GATEWAY_VERSION`, `DATA_UPTIME`, `DATA_SESSION_COUNT`, and `DATA_SESSIONS`
+  report unavailable values (`None` / `0` / `[]`) since the gateway does not expose
+  dedicated status or session endpoints.
+- Removed `_model_poll_counter` (no longer needed with a unified poll).
+
+### Added
+- Integration icon and logo (sourced from the OpenClaw Assistant add-on).
+
+## [0.1.1] - 2026-02-20
+
+### Fixed
+- Added content-type guard in `_request()`: when the gateway returns a non-JSON
+  response (e.g. HTML redirect/login page), a clear `OpenClawApiError` is now raised
+  instead of an unhandled `aiohttp.ContentTypeError`.
+
+## [0.1.0] - 2026-02-20
+
+### Added
+- Initial release of the OpenClaw Home Assistant Integration.
+- Config flow with automatic add-on discovery and manual host/port/token entry.
+- `sensor` platform: Status, Last Activity, Session Count, Active Model.
+- `binary_sensor` platform: Gateway Connected.
+- `conversation` platform: native HA Assist / Voice PE agent backed by the
+  OpenClaw gateway `/v1/chat/completions` endpoint (SSE streaming supported).
+- `DataUpdateCoordinator` polling the gateway on a configurable interval (default 30 s).
+- Service calls: `openclaw.send_message`, `openclaw.clear_history`.
+- Lovelace `openclaw-chat-card` custom card (`www/openclaw-chat-card.js`).
+- HACS-compatible repository structure (`hacs.json`).