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/TestAccountManager.swift

@@ -0,0 +1,127 @@
+import Foundation
+import XCTest
+
+/// High-level account lifecycle management for UI tests.
+enum TestAccountManager {
+
+    // MARK: - Credential Generation
+
+    /// Generate unique credentials with a timestamp + random suffix to avoid collisions.
+    static func uniqueCredentials(prefix: String = "uit") -> (username: String, email: String, password: String) {
+        let stamp = Int(Date().timeIntervalSince1970)
+        let random = Int.random(in: 1000...9999)
+        let username = "\(prefix)_\(stamp)_\(random)"
+        let email = "\(username)@test.example.com"
+        let password = "Pass\(stamp)!"
+        return (username, email, password)
+    }
+
+    // MARK: - Account Creation
+
+    /// Create a verified account via the backend API. Returns a ready-to-use session.
+    /// Calls `XCTFail` and returns nil if any step fails.
+    static func createVerifiedAccount(
+        file: StaticString = #filePath,
+        line: UInt = #line
+    ) -> TestSession? {
+        let creds = uniqueCredentials()
+
+        guard let session = TestAccountAPIClient.createVerifiedAccount(
+            username: creds.username,
+            email: creds.email,
+            password: creds.password
+        ) else {
+            XCTFail("Failed to create verified account for \(creds.username)", file: file, line: line)
+            return nil
+        }
+
+        return session
+    }
+
+    /// Create an unverified account (register only, no email verification).
+    /// Useful for testing the verification gate.
+    static func createUnverifiedAccount(
+        file: StaticString = #filePath,
+        line: UInt = #line
+    ) -> TestSession? {
+        let creds = uniqueCredentials()
+
+        guard let response = TestAccountAPIClient.register(
+            username: creds.username,
+            email: creds.email,
+            password: creds.password
+        ) else {
+            XCTFail("Failed to register unverified account for \(creds.username)", file: file, line: line)
+            return nil
+        }
+
+        return TestSession(
+            token: response.token,
+            user: response.user,
+            username: creds.username,
+            password: creds.password
+        )
+    }
+
+    // MARK: - Seeded Accounts
+
+    /// Login with a pre-seeded account that already exists in the database.
+    static func loginSeededAccount(
+        username: String = "admin",
+        password: String = "test1234",
+        file: StaticString = #filePath,
+        line: UInt = #line
+    ) -> TestSession? {
+        guard let response = TestAccountAPIClient.login(username: username, password: password) else {
+            XCTFail("Failed to login seeded account '\(username)'", file: file, line: line)
+            return nil
+        }
+
+        return TestSession(
+            token: response.token,
+            user: response.user,
+            username: username,
+            password: password
+        )
+    }
+
+    // MARK: - Password Reset
+
+    /// Execute the full forgot→verify→reset cycle via the backend API.
+    static func resetPassword(
+        email: String,
+        newPassword: String,
+        file: StaticString = #filePath,
+        line: UInt = #line
+    ) -> Bool {
+        guard TestAccountAPIClient.forgotPassword(email: email) != nil else {
+            XCTFail("Forgot password request failed for \(email)", file: file, line: line)
+            return false
+        }
+
+        guard let verifyResponse = TestAccountAPIClient.verifyResetCode(email: email) else {
+            XCTFail("Verify reset code failed for \(email)", file: file, line: line)
+            return false
+        }
+
+        guard TestAccountAPIClient.resetPassword(resetToken: verifyResponse.resetToken, newPassword: newPassword) != nil else {
+            XCTFail("Reset password failed for \(email)", file: file, line: line)
+            return false
+        }
+
+        return true
+    }
+
+    // MARK: - Token Management
+
+    /// Invalidate a session token via the logout API.
+    static func invalidateToken(
+        _ session: TestSession,
+        file: StaticString = #filePath,
+        line: UInt = #line
+    ) {
+        if TestAccountAPIClient.logout(token: session.token) == nil {
+            XCTFail("Failed to invalidate token for \(session.username)", file: file, line: line)
+        }
+    }
+}