Initial commit: Conjuga Spanish conjugation app

Includes SwiftData dual-store architecture (local reference + CloudKit user data),
JSON-based data seeding, 20 tense guides, 20 grammar notes, SRS review system,
course vocabulary, and widget support.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Conjuga/ConjugaWidget/WidgetDataReader.swift

@@ -0,0 +1,16 @@
+import Foundation
+import SharedModels
+
+struct WidgetDataReader {
+    static let suiteName = "group.com.conjuga.app"
+    static let dataKey = "widgetData"
+
+    static func read() -> WidgetData {
+        guard let shared = UserDefaults(suiteName: suiteName),
+              let data = shared.data(forKey: dataKey),
+              let decoded = try? JSONDecoder().decode(WidgetData.self, from: data) else {
+            return .placeholder
+        }
+        return decoded
+    }
+}