Add password reset feature for iOS and Android with deep link support

Implemented complete password reset flow with email verification and deep linking:

iOS (SwiftUI):
- PasswordResetViewModel: Manages 3-step flow (request, verify, reset) with deep link support
- ForgotPasswordView: Email entry screen with success/error states
- VerifyResetCodeView: 6-digit code verification with resend option
- ResetPasswordView: Password reset with live validation and strength indicators
- PasswordResetFlow: Container managing navigation between screens
- Deep link handling in iOSApp.swift for mycrib://reset-password?token=xxx
- Info.plist: Added CFBundleURLTypes for deep link scheme

Android (Compose):
- PasswordResetViewModel: StateFlow-based state management with coroutines
- ForgotPasswordScreen: Material3 email entry with auto-navigation
- VerifyResetCodeScreen: Code verification with Material3 design
- ResetPasswordScreen: Password reset with live validation checklist
- Deep link handling in MainActivity.kt and AndroidManifest.xml
- Token cleanup callback to prevent reusing expired deep link tokens
- Shared ViewModel scoping across all password reset screens
- Improved error handling for Django validation errors

Shared:
- Routes: Added ForgotPasswordRoute, VerifyResetCodeRoute, ResetPasswordRoute
- AuthApi: Enhanced resetPassword with Django validation error parsing
- User models: Added password reset request/response models

Security features:
- Deep link tokens expire after use
- Proper token validation on backend
- Session invalidation after password change
- Password strength requirements enforced

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

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

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

@@ -69,3 +69,38 @@ data class UpdateProfileRequest(
     @SerialName("last_name") val lastName: String? = null,
     val email: String? = null
 )
+
+// Password Reset Models
+@Serializable
+data class ForgotPasswordRequest(
+    val email: String
+)
+
+@Serializable
+data class ForgotPasswordResponse(
+    val message: String
+)
+
+@Serializable
+data class VerifyResetCodeRequest(
+    val email: String,
+    val code: String
+)
+
+@Serializable
+data class VerifyResetCodeResponse(
+    val message: String,
+    @SerialName("reset_token") val resetToken: String
+)
+
+@Serializable
+data class ResetPasswordRequest(
+    @SerialName("reset_token") val resetToken: String,
+    @SerialName("new_password") val newPassword: String,
+    @SerialName("confirm_password") val confirmPassword: String
+)
+
+@Serializable
+data class ResetPasswordResponse(
+    val message: String
+)