Update warranty status to use backend calculation and add comprehensive tests

Client-Side Changes:
- Add WarrantyStatus data class to Document model for backend-calculated status
- Update WarrantyCard to display backend status (statusText, statusColor) with client fallback
- Fix document list refresh: call loadDocuments() after create/update operations

Testing:
- Add ComprehensiveDocumentWarrantyTests with 25+ XCUITest cases
- Test document creation, update, delete, image upload
- Test warranty-specific fields and property selection
- Test both general documents and warranties
- Includes helper methods for form interaction and cleanup

Other:
- Update ApiConfig and PushNotificationManager

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

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

composeApp/src/commonMain/kotlin/com/example/mycrib/models/Document.kt

@@ -3,6 +3,13 @@ package com.example.mycrib.models
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
+@Serializable
+data class WarrantyStatus(
+    @SerialName("status_text") val statusText: String,
+    @SerialName("status_color") val statusColor: String,
+    @SerialName("is_expiring_soon") val isExpiringSoon: Boolean
+)
+
 @Serializable
 data class DocumentImage(
     val id: Int? = null,
@@ -48,6 +55,7 @@ data class Document(
     val notes: String? = null,
     @SerialName("is_active") val isActive: Boolean = true,
     @SerialName("days_until_expiration") val daysUntilExpiration: Int? = null,
+    @SerialName("warranty_status") val warrantyStatus: WarrantyStatus? = null,
     @SerialName("created_at") val createdAt: String? = null,
     @SerialName("updated_at") val updatedAt: String? = null
 )

composeApp/src/commonMain/kotlin/com/example/mycrib/network/ApiConfig.kt

@@ -9,7 +9,7 @@ package com.example.mycrib.network
  */
 object ApiConfig {
     // ⚠️ CHANGE THIS TO TOGGLE ENVIRONMENT ⚠️
-    val CURRENT_ENV = Environment.DEV
+    val CURRENT_ENV = Environment.LOCAL
 
     enum class Environment {
         LOCAL,