Add comprehensive iOS unit and UI test suites for greenfield test plan

- Create unit tests: DataLayerTests (27 tests for DATA-001–007), DataManagerExtendedTests
  (20 tests for TASK-005, TASK-012, TCOMP-003, THEME-001, QA-002), plus ValidationHelpers,
  TaskMetrics, StringExtensions, DoubleExtensions, DateUtils, DocumentHelpers, ErrorMessageParser
- Create UI tests: AuthenticationTests, PasswordResetTests, OnboardingTests, TaskIntegration,
  ContractorIntegration, ResidenceIntegration, DocumentIntegration, DataLayer, Stability
- Add UI test framework: AuthenticatedTestCase, ScreenObjects, TestFlows, TestAccountManager,
  TestAccountAPIClient, TestDataCleaner, TestDataSeeder
- Add accessibility identifiers to password reset views for UI test support
- Add greenfield test plan CSVs and update automated column for 27 test IDs
- All 297 unit tests pass across 60 suites

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

iosApp/CaseraUITests/Framework/TestFlows.swift

@@ -35,6 +35,47 @@ enum TestFlows {
         return createAccount
     }
 
+    /// Type credentials into the login screen and tap login.
+    /// Assumes the app is already showing the login screen.
+    static func loginWithCredentials(app: XCUIApplication, username: String, password: String) {
+        let login = LoginScreen(app: app)
+        login.waitForLoad()
+        login.enterUsername(username)
+        login.enterPassword(password)
+
+        let loginButton = app.buttons[UITestID.Auth.loginButton]
+        loginButton.waitUntilHittable(timeout: 10).tap()
+    }
+
+    /// Drive the full forgot password → verify code → reset password flow using the debug code.
+    static func completeForgotPasswordFlow(
+        app: XCUIApplication,
+        email: String,
+        newPassword: String,
+        confirmPassword: String? = nil
+    ) {
+        let confirm = confirmPassword ?? newPassword
+
+        // Step 1: Enter email on forgot password screen
+        let forgotScreen = ForgotPasswordScreen(app: app)
+        forgotScreen.waitForLoad()
+        forgotScreen.enterEmail(email)
+        forgotScreen.tapSendCode()
+
+        // Step 2: Enter debug verification code
+        let verifyScreen = VerifyResetCodeScreen(app: app)
+        verifyScreen.waitForLoad()
+        verifyScreen.enterCode(TestAccountAPIClient.debugVerificationCode)
+        verifyScreen.tapVerify()
+
+        // Step 3: Enter new password
+        let resetScreen = ResetPasswordScreen(app: app)
+        resetScreen.waitForLoad()
+        resetScreen.enterNewPassword(newPassword)
+        resetScreen.enterConfirmPassword(confirm)
+        resetScreen.tapReset()
+    }
+
     @discardableResult
     static func openRegisterFromLogin(app: XCUIApplication) -> RegisterScreen {
         let login: LoginScreen