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/LocationManager.swift

@@ -0,0 +1,71 @@
+//
+//  LocationManager.swift
+//  Reflect
+//
+//  CoreLocation wrapper with async/await for one-shot location requests.
+//
+
+import CoreLocation
+import os.log
+
+@MainActor
+final class LocationManager: NSObject {
+    static let shared = LocationManager()
+
+    private static let logger = Logger(
+        subsystem: Bundle.main.bundleIdentifier ?? "com.88oakapps.reflect",
+        category: "LocationManager"
+    )
+
+    private let manager = CLLocationManager()
+    private var locationContinuation: CheckedContinuation<CLLocation, Error>?
+
+    var authorizationStatus: CLAuthorizationStatus {
+        manager.authorizationStatus
+    }
+
+    private override init() {
+        super.init()
+        manager.delegate = self
+        manager.desiredAccuracy = kCLLocationAccuracyKilometer
+    }
+
+    func requestAuthorization() {
+        manager.requestWhenInUseAuthorization()
+    }
+
+    var currentLocation: CLLocation {
+        get async throws {
+            // Return last known location if recent enough (within 10 minutes)
+            if let last = manager.location,
+               abs(last.timestamp.timeIntervalSinceNow) < 600 {
+                return last
+            }
+
+            return try await withCheckedThrowingContinuation { continuation in
+                self.locationContinuation = continuation
+                self.manager.requestLocation()
+            }
+        }
+    }
+}
+
+// MARK: - CLLocationManagerDelegate
+
+extension LocationManager: CLLocationManagerDelegate {
+    nonisolated func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
+        Task { @MainActor in
+            guard let location = locations.first else { return }
+            locationContinuation?.resume(returning: location)
+            locationContinuation = nil
+        }
+    }
+
+    nonisolated func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
+        Task { @MainActor in
+            Self.logger.error("Location request failed: \(error.localizedDescription)")
+            locationContinuation?.resume(throwing: error)
+            locationContinuation = nil
+        }
+    }
+}