Add weather feature with WeatherKit integration for mood entries

Fetch and display weather data (temp, condition, hi/lo, humidity) when
users log a mood. Weather is stored as JSON on MoodEntryModel and shown
as a card in EntryDetailView. Premium-gated with location permission
prompt. Includes BGTask retry for failed fetches and full analytics.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Shared/Services/WeatherManager.swift

@@ -0,0 +1,149 @@
+//
+//  WeatherManager.swift
+//  Reflect
+//
+//  WeatherKit fetch service for attaching weather data to mood entries.
+//
+
+import Foundation
+import WeatherKit
+import CoreLocation
+import os.log
+
+@MainActor
+final class WeatherManager {
+    static let shared = WeatherManager()
+
+    private static let logger = Logger(
+        subsystem: Bundle.main.bundleIdentifier ?? "com.88oakapps.reflect",
+        category: "WeatherManager"
+    )
+
+    private static let retryQueueKey = "weatherRetryQueue"
+
+    private init() {}
+
+    // MARK: - Fetch Weather
+
+    func fetchWeather(for date: Date, at location: CLLocation) async throws -> WeatherData {
+        let calendar = Calendar.current
+        let startOfDay = calendar.startOfDay(for: date)
+        let endOfDay = calendar.date(byAdding: .day, value: 1, to: startOfDay)!
+
+        let (daily, current) = try await WeatherService.shared.weather(
+            for: location,
+            including: .daily(startDate: startOfDay, endDate: endOfDay), .current
+        )
+
+        guard let dayWeather = daily.forecast.first else {
+            throw WeatherError.noDataAvailable
+        }
+
+        return WeatherData(
+            conditionSymbol: dayWeather.symbolName,
+            condition: dayWeather.condition.description,
+            temperature: (dayWeather.highTemperature.value + dayWeather.lowTemperature.value) / 2.0,
+            highTemperature: dayWeather.highTemperature.value,
+            lowTemperature: dayWeather.lowTemperature.value,
+            humidity: current.humidity,
+            latitude: location.coordinate.latitude,
+            longitude: location.coordinate.longitude,
+            fetchedAt: Date()
+        )
+    }
+
+    // MARK: - Fetch and Save
+
+    func fetchAndSaveWeather(for date: Date) async {
+        do {
+            let location = try await LocationManager.shared.currentLocation
+
+            let weatherData = try await fetchWeather(for: date, at: location)
+
+            guard let json = weatherData.encode() else {
+                Self.logger.error("Failed to encode weather data")
+                return
+            }
+
+            DataController.shared.updateWeather(forDate: date, weatherJSON: json)
+            AnalyticsManager.shared.track(.weatherFetched)
+
+            Self.logger.info("Weather saved for \(date)")
+        } catch {
+            Self.logger.error("Weather fetch failed: \(error.localizedDescription)")
+            AnalyticsManager.shared.track(.weatherFetchFailed(error: error.localizedDescription))
+            addToRetryQueue(date: date)
+        }
+    }
+
+    // MARK: - Retry Queue
+
+    func retryPendingWeatherFetches() async {
+        let dates = getRetryQueue()
+        guard !dates.isEmpty else { return }
+
+        Self.logger.info("Retrying weather fetch for \(dates.count) entries")
+
+        var remainingDates: [Date] = []
+
+        for date in dates {
+            do {
+                let location = try await LocationManager.shared.currentLocation
+                let weatherData = try await fetchWeather(for: date, at: location)
+
+                guard let json = weatherData.encode() else { continue }
+
+                DataController.shared.updateWeather(forDate: date, weatherJSON: json)
+                Self.logger.info("Retry succeeded for \(date)")
+            } catch {
+                Self.logger.error("Retry failed for \(date): \(error.localizedDescription)")
+                remainingDates.append(date)
+            }
+        }
+
+        saveRetryQueue(remainingDates)
+    }
+
+    private func addToRetryQueue(date: Date) {
+        var queue = getRetryQueue()
+        let startOfDay = Calendar.current.startOfDay(for: date)
+
+        // Don't add duplicates
+        guard !queue.contains(where: { Calendar.current.isDate($0, inSameDayAs: startOfDay) }) else { return }
+
+        queue.append(startOfDay)
+
+        // Keep only last 7 days of retries
+        let sevenDaysAgo = Calendar.current.date(byAdding: .day, value: -7, to: Date())!
+        queue = queue.filter { $0 > sevenDaysAgo }
+
+        saveRetryQueue(queue)
+    }
+
+    private func getRetryQueue() -> [Date] {
+        guard let strings = GroupUserDefaults.groupDefaults.stringArray(forKey: Self.retryQueueKey) else {
+            return []
+        }
+        let formatter = ISO8601DateFormatter()
+        return strings.compactMap { formatter.date(from: $0) }
+    }
+
+    private func saveRetryQueue(_ dates: [Date]) {
+        let formatter = ISO8601DateFormatter()
+        let strings = dates.map { formatter.string(from: $0) }
+        GroupUserDefaults.groupDefaults.set(strings, forKey: Self.retryQueueKey)
+    }
+
+    // MARK: - Error
+
+    enum WeatherError: LocalizedError {
+        case noDataAvailable
+
+        var errorDescription: String? {
+            switch self {
+            case .noDataAvailable:
+                return "No weather data available for the requested date"
+            }
+        }
+    }
+}