chore: release v1.5.0

feat: add dynamic environment widgets

Add live weather, sun position, and forecast widgets to Front Hall dashboard,
powered by data from the Qdrant volatile collection via core-api.

New widgets:
- SunPositionWidget: Animated arc showing sun/moon position with gradient colors
- ForecastWidget: Multi-day weather outlook
- Updated WeatherWidget and AirQualityWidget to accept API data

Infrastructure:
- Environment datasource calling GET /tools/environment
- Environment provider with 5-minute auto-refresh
- Freezed models for environment data

Tests:
- 12 widget tests for environment section
- Updated existing tests with givenEnvironment() harness method

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

lib/features/front_hall/data/models/environment_model.dart

@@ -0,0 +1,91 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'environment_model.freezed.dart';
+part 'environment_model.g.dart';
+
+/// Environment data response from Core API.
+/// Contains weather, forecast, sun times, and optionally air quality.
+@freezed
+sealed class EnvironmentData with _$EnvironmentData {
+  const factory EnvironmentData({
+    WeatherData? weather,
+    List<ForecastDay>? forecast,
+    @JsonKey(name: 'sun_times') SunTimesData? sunTimes,
+    @JsonKey(name: 'air_quality') AirQualityData? airQuality,
+    @JsonKey(name: 'updated_at') required DateTime updatedAt,
+    String? user,
+  }) = _EnvironmentData;
+
+  factory EnvironmentData.fromJson(Map<String, dynamic> json) =>
+      _$EnvironmentDataFromJson(json);
+}
+
+/// Current weather conditions.
+@freezed
+sealed class WeatherData with _$WeatherData {
+  const factory WeatherData({
+    double? temperature,
+    @JsonKey(name: 'feels_like') double? feelsLike,
+    String? conditions,
+    int? humidity,
+    @JsonKey(name: 'wind_speed') double? windSpeed,
+    @JsonKey(name: 'wind_direction') String? windDirection,
+    double? pressure,
+    double? visibility,
+    @JsonKey(name: 'uv_index') double? uvIndex,
+    String? location,
+    String? icon,
+  }) = _WeatherData;
+
+  factory WeatherData.fromJson(Map<String, dynamic> json) =>
+      _$WeatherDataFromJson(json);
+}
+
+/// Single day forecast data.
+@freezed
+sealed class ForecastDay with _$ForecastDay {
+  const factory ForecastDay({
+    required String date,
+    double? high,
+    double? low,
+    String? conditions,
+    @JsonKey(name: 'precipitation_chance') int? precipitationChance,
+    String? icon,
+  }) = _ForecastDay;
+
+  factory ForecastDay.fromJson(Map<String, dynamic> json) =>
+      _$ForecastDayFromJson(json);
+}
+
+/// Sunrise and sunset times.
+@freezed
+sealed class SunTimesData with _$SunTimesData {
+  const factory SunTimesData({
+    DateTime? sunrise,
+    DateTime? sunset,
+    @JsonKey(name: 'daylight_minutes') int? daylightMinutes,
+    @JsonKey(name: 'solar_noon') DateTime? solarNoon,
+    DateTime? dawn,
+    DateTime? dusk,
+  }) = _SunTimesData;
+
+  factory SunTimesData.fromJson(Map<String, dynamic> json) =>
+      _$SunTimesDataFromJson(json);
+}
+
+/// Air quality information.
+@freezed
+sealed class AirQualityData with _$AirQualityData {
+  const factory AirQualityData({
+    int? aqi,
+    String? quality,
+    double? pm25,
+    double? pm10,
+    double? o3,
+    double? no2,
+    String? location,
+  }) = _AirQualityData;
+
+  factory AirQualityData.fromJson(Map<String, dynamic> json) =>
+      _$AirQualityDataFromJson(json);
+}