feat: Implement full certificate management with upload, upsert, delete, and new domain models for staff certificates and their statuses.

apps/mobile/packages/core/lib/src/routing/staff/route_paths.dart

@@ -172,6 +172,9 @@ class StaffPaths {
   /// Manage professional certificates (e.g., food handling, CPR, etc.).
   static const String certificates = '/worker-main/certificates/';
 
+  /// Certificate upload page.
+  static const String certificateUpload = '/worker-main/certificates/upload/';
+
   // ==========================================================================
   // FINANCIAL INFORMATION
   // ==========================================================================

apps/mobile/packages/core/lib/src/services/api_service/core_api_services/verification/verification_service.dart

@@ -17,6 +17,7 @@ class VerificationService extends BaseCoreService {
     required String subjectType,
     required String subjectId,
     required String fileUri,
+    String? category,
     Map<String, dynamic>? rules,
   }) async {
     final ApiResponse res = await action(() async {
@@ -27,6 +28,7 @@ class VerificationService extends BaseCoreService {
           'subjectType': subjectType,
           'subjectId': subjectId,
           'fileUri': fileUri,
+          if (category != null) 'category': category,
           if (rules != null) 'rules': rules,
         },
       );

apps/mobile/packages/core_localization/lib/src/l10n/en.i18n.json

@@ -1057,7 +1057,8 @@
       "select_pdf": "Select PDF File",
       "attestation": "I certify that this document is genuine and valid.",
       "success": "Document uploaded successfully",
-      "error": "Failed to upload document"
+      "error": "Failed to upload document",
+      "replace": "Replace"
     }
   },
   "staff_certificates": {
@@ -1086,13 +1087,16 @@
     },
     "upload_modal": {
       "title": "Upload Certificate",
+      "name_label": "Certificate Name",
+      "issuer_label": "Certificate Issuer",
       "expiry_label": "Expiration Date (Optional)",
       "select_date": "Select date",
       "upload_file": "Upload File",
       "drag_drop": "Drag and drop or click to upload",
       "supported_formats": "PDF, JPG, PNG up to 10MB",
       "cancel": "Cancel",
-      "save": "Save Certificate"
+      "save": "Save Certificate",
+      "success_snackbar": "Certificate successfully uploaded and pending verification"
     },
     "delete_modal": {
       "title": "Remove Certificate?",

apps/mobile/packages/data_connect/lib/src/connectors/staff/data/repositories/staff_connector_repository_impl.dart

@@ -524,4 +524,221 @@ class StaffConnectorRepositoryImpl implements StaffConnectorRepository {
         return dc.DocumentStatus.EXPIRING;
     }
   }
+
+  @override
+  Future<List<domain.StaffCertificate>> getStaffCertificates() async {
+    return _service.run(() async {
+      final String staffId = await _service.getStaffId();
+      final QueryResult<
+        dc.ListCertificatesByStaffIdData,
+        dc.ListCertificatesByStaffIdVariables
+      >
+      response = await _service.connector
+          .listCertificatesByStaffId(staffId: staffId)
+          .execute();
+
+      return response.data.certificates.map((
+        dc.ListCertificatesByStaffIdCertificates cert,
+      ) {
+        return domain.StaffCertificate(
+          id: cert.id,
+          staffId: cert.staffId,
+          name: cert.name,
+          description: cert.description,
+          expiryDate: _service.toDateTime(cert.expiry),
+          status: _mapToDomainCertificateStatus(cert.status),
+          certificateUrl: cert.fileUrl,
+          icon: cert.icon,
+          certificationType: _mapToDomainComplianceType(cert.certificationType),
+          issuer: cert.issuer,
+          certificateNumber: cert.certificateNumber,
+          validationStatus: _mapToDomainValidationStatus(cert.validationStatus),
+          createdAt: _service.toDateTime(cert.createdAt),
+        );
+      }).toList();
+    });
+  }
+
+  @override
+  Future<void> upsertStaffCertificate({
+    required domain.ComplianceType certificationType,
+    required String name,
+    required domain.StaffCertificateStatus status,
+    String? fileUrl,
+    DateTime? expiry,
+    String? issuer,
+    String? certificateNumber,
+    domain.StaffCertificateValidationStatus? validationStatus,
+  }) async {
+    await _service.run(() async {
+      final String staffId = await _service.getStaffId();
+
+      await _service.connector
+          .upsertStaffCertificate(
+            staffId: staffId,
+            certificationType: _mapToDCComplianceType(certificationType),
+            name: name,
+            status: _mapToDCCertificateStatus(status),
+          )
+          .fileUrl(fileUrl)
+          .expiry(_service.tryToTimestamp(expiry))
+          .issuer(issuer)
+          .certificateNumber(certificateNumber)
+          .validationStatus(_mapToDCValidationStatus(validationStatus))
+          .execute();
+    });
+  }
+
+  @override
+  Future<void> deleteStaffCertificate({
+    required domain.ComplianceType certificationType,
+  }) async {
+    await _service.run(() async {
+      final String staffId = await _service.getStaffId();
+
+      await _service.connector
+          .deleteCertificate(
+            staffId: staffId,
+            certificationType: _mapToDCComplianceType(certificationType),
+          )
+          .execute();
+    });
+  }
+
+  domain.StaffCertificateStatus _mapToDomainCertificateStatus(
+    dc.EnumValue<dc.CertificateStatus> status,
+  ) {
+    if (status is dc.Unknown) return domain.StaffCertificateStatus.notStarted;
+    final dc.CertificateStatus value =
+        (status as dc.Known<dc.CertificateStatus>).value;
+    switch (value) {
+      case dc.CertificateStatus.CURRENT:
+        return domain.StaffCertificateStatus.current;
+      case dc.CertificateStatus.EXPIRING_SOON:
+        return domain.StaffCertificateStatus.expiringSoon;
+      case dc.CertificateStatus.COMPLETED:
+        return domain.StaffCertificateStatus.completed;
+      case dc.CertificateStatus.PENDING:
+        return domain.StaffCertificateStatus.pending;
+      case dc.CertificateStatus.EXPIRED:
+        return domain.StaffCertificateStatus.expired;
+      case dc.CertificateStatus.EXPIRING:
+        return domain.StaffCertificateStatus.expiring;
+      case dc.CertificateStatus.NOT_STARTED:
+        return domain.StaffCertificateStatus.notStarted;
+    }
+  }
+
+  dc.CertificateStatus _mapToDCCertificateStatus(
+    domain.StaffCertificateStatus status,
+  ) {
+    switch (status) {
+      case domain.StaffCertificateStatus.current:
+        return dc.CertificateStatus.CURRENT;
+      case domain.StaffCertificateStatus.expiringSoon:
+        return dc.CertificateStatus.EXPIRING_SOON;
+      case domain.StaffCertificateStatus.completed:
+        return dc.CertificateStatus.COMPLETED;
+      case domain.StaffCertificateStatus.pending:
+        return dc.CertificateStatus.PENDING;
+      case domain.StaffCertificateStatus.expired:
+        return dc.CertificateStatus.EXPIRED;
+      case domain.StaffCertificateStatus.expiring:
+        return dc.CertificateStatus.EXPIRING;
+      case domain.StaffCertificateStatus.notStarted:
+        return dc.CertificateStatus.NOT_STARTED;
+    }
+  }
+
+  domain.ComplianceType _mapToDomainComplianceType(
+    dc.EnumValue<dc.ComplianceType> type,
+  ) {
+    if (type is dc.Unknown) return domain.ComplianceType.other;
+    final dc.ComplianceType value = (type as dc.Known<dc.ComplianceType>).value;
+    switch (value) {
+      case dc.ComplianceType.BACKGROUND_CHECK:
+        return domain.ComplianceType.backgroundCheck;
+      case dc.ComplianceType.FOOD_HANDLER:
+        return domain.ComplianceType.foodHandler;
+      case dc.ComplianceType.RBS:
+        return domain.ComplianceType.rbs;
+      case dc.ComplianceType.LEGAL:
+        return domain.ComplianceType.legal;
+      case dc.ComplianceType.OPERATIONAL:
+        return domain.ComplianceType.operational;
+      case dc.ComplianceType.SAFETY:
+        return domain.ComplianceType.safety;
+      case dc.ComplianceType.TRAINING:
+        return domain.ComplianceType.training;
+      case dc.ComplianceType.LICENSE:
+        return domain.ComplianceType.license;
+      case dc.ComplianceType.OTHER:
+        return domain.ComplianceType.other;
+    }
+  }
+
+  dc.ComplianceType _mapToDCComplianceType(domain.ComplianceType type) {
+    switch (type) {
+      case domain.ComplianceType.backgroundCheck:
+        return dc.ComplianceType.BACKGROUND_CHECK;
+      case domain.ComplianceType.foodHandler:
+        return dc.ComplianceType.FOOD_HANDLER;
+      case domain.ComplianceType.rbs:
+        return dc.ComplianceType.RBS;
+      case domain.ComplianceType.legal:
+        return dc.ComplianceType.LEGAL;
+      case domain.ComplianceType.operational:
+        return dc.ComplianceType.OPERATIONAL;
+      case domain.ComplianceType.safety:
+        return dc.ComplianceType.SAFETY;
+      case domain.ComplianceType.training:
+        return dc.ComplianceType.TRAINING;
+      case domain.ComplianceType.license:
+        return dc.ComplianceType.LICENSE;
+      case domain.ComplianceType.other:
+        return dc.ComplianceType.OTHER;
+    }
+  }
+
+  domain.StaffCertificateValidationStatus? _mapToDomainValidationStatus(
+    dc.EnumValue<dc.ValidationStatus>? status,
+  ) {
+    if (status == null || status is dc.Unknown) return null;
+    final dc.ValidationStatus value =
+        (status as dc.Known<dc.ValidationStatus>).value;
+    switch (value) {
+      case dc.ValidationStatus.APPROVED:
+        return domain.StaffCertificateValidationStatus.approved;
+      case dc.ValidationStatus.PENDING_EXPERT_REVIEW:
+        return domain.StaffCertificateValidationStatus.pendingExpertReview;
+      case dc.ValidationStatus.REJECTED:
+        return domain.StaffCertificateValidationStatus.rejected;
+      case dc.ValidationStatus.AI_VERIFIED:
+        return domain.StaffCertificateValidationStatus.aiVerified;
+      case dc.ValidationStatus.AI_FLAGGED:
+        return domain.StaffCertificateValidationStatus.aiFlagged;
+      case dc.ValidationStatus.MANUAL_REVIEW_NEEDED:
+        return domain.StaffCertificateValidationStatus.manualReviewNeeded;
+    }
+  }
+
+  dc.ValidationStatus? _mapToDCValidationStatus(
+    domain.StaffCertificateValidationStatus? status,
+  ) {
+    if (status == null) return null;
+    switch (status) {
+      case domain.StaffCertificateValidationStatus.approved:
+        return dc.ValidationStatus.APPROVED;
+      case domain.StaffCertificateValidationStatus.pendingExpertReview:
+        return dc.ValidationStatus.PENDING_EXPERT_REVIEW;
+      case domain.StaffCertificateValidationStatus.rejected:
+        return dc.ValidationStatus.REJECTED;
+      case domain.StaffCertificateValidationStatus.aiVerified:
+        return dc.ValidationStatus.AI_VERIFIED;
+      case domain.StaffCertificateValidationStatus.aiFlagged:
+        return dc.ValidationStatus.AI_FLAGGED;
+      case domain.StaffCertificateValidationStatus.manualReviewNeeded:
+        return dc.ValidationStatus.MANUAL_REVIEW_NEEDED;
+    }
+  }
 }

apps/mobile/packages/data_connect/lib/src/connectors/staff/domain/repositories/staff_connector_repository.dart

@@ -83,4 +83,24 @@ abstract interface class StaffConnectorRepository {
     DocumentStatus? status,
     String? verificationId,
   });
+
+  /// Fetches the staff certificates for the current authenticated user.
+  Future<List<StaffCertificate>> getStaffCertificates();
+
+  /// Upserts staff certificate information.
+  Future<void> upsertStaffCertificate({
+    required ComplianceType certificationType,
+    required String name,
+    required StaffCertificateStatus status,
+    String? fileUrl,
+    DateTime? expiry,
+    String? issuer,
+    String? certificateNumber,
+    StaffCertificateValidationStatus? validationStatus,
+  });
+
+  /// Deletes a staff certificate.
+  Future<void> deleteStaffCertificate({
+    required ComplianceType certificationType,
+  });
 }

apps/mobile/packages/domain/lib/krow_domain.dart

@@ -78,6 +78,10 @@ export 'src/adapters/financial/bank_account/bank_account_adapter.dart';
 // Profile
 export 'src/entities/profile/staff_document.dart';
 export 'src/entities/profile/document_verification_status.dart';
+export 'src/entities/profile/staff_certificate.dart';
+export 'src/entities/profile/compliance_type.dart';
+export 'src/entities/profile/staff_certificate_status.dart';
+export 'src/entities/profile/staff_certificate_validation_status.dart';
 export 'src/entities/profile/attire_item.dart';
 export 'src/entities/profile/attire_verification_status.dart';
 export 'src/entities/profile/relationship_type.dart';

apps/mobile/packages/domain/lib/src/entities/profile/compliance_type.dart

@@ -0,0 +1,25 @@
+/// Represents the broad category of a compliance certificate.
+enum ComplianceType {
+  backgroundCheck('BACKGROUND_CHECK'),
+  foodHandler('FOOD_HANDLER'),
+  rbs('RBS'),
+  legal('LEGAL'),
+  operational('OPERATIONAL'),
+  safety('SAFETY'),
+  training('TRAINING'),
+  license('LICENSE'),
+  other('OTHER');
+
+  const ComplianceType(this.value);
+
+  /// The string value expected by the backend.
+  final String value;
+
+  /// Creates a [ComplianceType] from a string.
+  static ComplianceType fromString(String value) {
+    return ComplianceType.values.firstWhere(
+      (ComplianceType e) => e.value == value,
+      orElse: () => ComplianceType.other,
+    );
+  }
+}

apps/mobile/packages/domain/lib/src/entities/profile/staff_certificate.dart

@@ -0,0 +1,120 @@
+import 'package:equatable/equatable.dart';
+
+import 'compliance_type.dart';
+import 'staff_certificate_status.dart';
+import 'staff_certificate_validation_status.dart';
+
+/// Represents a staff's compliance certificate record.
+class StaffCertificate extends Equatable {
+  const StaffCertificate({
+    required this.id,
+    required this.staffId,
+    required this.name,
+    this.description,
+    this.expiryDate,
+    required this.status,
+    this.certificateUrl,
+    this.icon,
+    required this.certificationType,
+    this.issuer,
+    this.certificateNumber,
+    this.validationStatus,
+    this.createdAt,
+    this.updatedAt,
+  });
+
+  /// The unique identifier of the certificate record.
+  final String id;
+
+  /// The ID of the staff member.
+  final String staffId;
+
+  /// The display name of the certificate.
+  final String name;
+
+  /// A description or details about the certificate.
+  final String? description;
+
+  /// The expiration date of the certificate.
+  final DateTime? expiryDate;
+
+  /// The current state of the certificate.
+  final StaffCertificateStatus status;
+
+  /// The URL of the stored certificate file/image.
+  final String? certificateUrl;
+
+  /// An icon to display for this certificate type.
+  final String? icon;
+
+  /// The category of compliance this certificate fits into.
+  final ComplianceType certificationType;
+
+  /// The issuing body or authority.
+  final String? issuer;
+
+  /// Document number or reference.
+  final String? certificateNumber;
+
+  /// Recent validation/verification results.
+  final StaffCertificateValidationStatus? validationStatus;
+
+  /// Creation timestamp.
+  final DateTime? createdAt;
+
+  /// Last update timestamp.
+  final DateTime? updatedAt;
+
+  @override
+  List<Object?> get props => <Object?>[
+    id,
+    staffId,
+    name,
+    description,
+    expiryDate,
+    status,
+    certificateUrl,
+    icon,
+    certificationType,
+    issuer,
+    certificateNumber,
+    validationStatus,
+    createdAt,
+    updatedAt,
+  ];
+
+  /// Creates a copy of this [StaffCertificate] with updated fields.
+  StaffCertificate copyWith({
+    String? id,
+    String? staffId,
+    String? name,
+    String? description,
+    DateTime? expiryDate,
+    StaffCertificateStatus? status,
+    String? certificateUrl,
+    String? icon,
+    ComplianceType? certificationType,
+    String? issuer,
+    String? certificateNumber,
+    StaffCertificateValidationStatus? validationStatus,
+    DateTime? createdAt,
+    DateTime? updatedAt,
+  }) {
+    return StaffCertificate(
+      id: id ?? this.id,
+      staffId: staffId ?? this.staffId,
+      name: name ?? this.name,
+      description: description ?? this.description,
+      expiryDate: expiryDate ?? this.expiryDate,
+      status: status ?? this.status,
+      certificateUrl: certificateUrl ?? this.certificateUrl,
+      icon: icon ?? this.icon,
+      certificationType: certificationType ?? this.certificationType,
+      issuer: issuer ?? this.issuer,
+      certificateNumber: certificateNumber ?? this.certificateNumber,
+      validationStatus: validationStatus ?? this.validationStatus,
+      createdAt: createdAt ?? this.createdAt,
+      updatedAt: updatedAt ?? this.updatedAt,
+    );
+  }
+}

apps/mobile/packages/domain/lib/src/entities/profile/staff_certificate_status.dart

@@ -0,0 +1,23 @@
+/// Represents the current validity status of a staff certificate.
+enum StaffCertificateStatus {
+  current('CURRENT'),
+  expiringSoon('EXPIRING_SOON'),
+  completed('COMPLETED'),
+  pending('PENDING'),
+  expired('EXPIRED'),
+  expiring('EXPIRING'),
+  notStarted('NOT_STARTED');
+
+  const StaffCertificateStatus(this.value);
+
+  /// The string value expected by the backend.
+  final String value;
+
+  /// Creates a [StaffCertificateStatus] from a string.
+  static StaffCertificateStatus fromString(String value) {
+    return StaffCertificateStatus.values.firstWhere(
+      (StaffCertificateStatus e) => e.value == value,
+      orElse: () => StaffCertificateStatus.notStarted,
+    );
+  }
+}

apps/mobile/packages/domain/lib/src/entities/profile/staff_certificate_validation_status.dart

@@ -0,0 +1,22 @@
+/// Represents the verification or review state for a staff certificate.
+enum StaffCertificateValidationStatus {
+  approved('APPROVED'),
+  pendingExpertReview('PENDING_EXPERT_REVIEW'),
+  rejected('REJECTED'),
+  aiVerified('AI_VERIFIED'),
+  aiFlagged('AI_FLAGGED'),
+  manualReviewNeeded('MANUAL_REVIEW_NEEDED');
+
+  const StaffCertificateValidationStatus(this.value);
+
+  /// The string value expected by the backend.
+  final String value;
+
+  /// Creates a [StaffCertificateValidationStatus] from a string.
+  static StaffCertificateValidationStatus fromString(String value) {
+    return StaffCertificateValidationStatus.values.firstWhere(
+      (StaffCertificateValidationStatus e) => e.value == value,
+      orElse: () => StaffCertificateValidationStatus.manualReviewNeeded,
+    );
+  }
+}

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/IMPLEMENTATION_WORKFLOW.md

@@ -0,0 +1,220 @@
+# Certificate Upload & Verification Workflow
+
+This document outlines the standardized workflow for handling certificate uploads, metadata capture, and persistence within the Krow mobile application. The certificates module follows the same layered architecture as the `documents` module (see `documents/IMPLEMENTATION_WORKFLOW.md`), with key differences to accommodate certificate-specific metadata (expiry date, issuer, certificate number, type).
+
+## 1. Overview
+
+The workflow follows a 4-step lifecycle:
+
+1. **Form Entry**: The user fills in certificate metadata (name, type, issuer, certificate number, expiry date).
+2. **File Selection**: Picking a PDF, JPG, or PNG file locally via `FilePickerService`.
+3. **Attestation**: Requiring the user to confirm the certificate is genuine before submission.
+4. **Upload & Persistence**: Pushing the file to storage, initiating background verification, and saving the record to the database via Data Connect.
+
+---
+
+## 2. Technical Stack
+
+| Service | Responsibility |
+|---------|----------------|
+| `FilePickerService` | PDF/image file selection from device |
+| `FileUploadService` | Uploads raw files to secure cloud storage |
+| `SignedUrlService` | Generates secure internal links for verification access |
+| `VerificationService` | Orchestrates AI or manual verification (category: `CERTIFICATE`) |
+| `DataConnect` (Firebase) | Persists structured data and verification metadata via `upsertStaffCertificate` |
+
+---
+
+## 3. Key Difference vs. Documents Module
+
+| Aspect | Documents | Certificates |
+|--------|-----------|--------------|
+| Metadata captured | None (just a file) | `name`, `type` (`ComplianceType`), `expiryDate`, `issuer`, `certificateNumber` |
+| Accepted file types | `pdf` only | `pdf`, `jpg`, `png` |
+| Verification category | `DOCUMENT` | `CERTIFICATE` |
+| Domain entity | `StaffDocument` | `StaffCertificate` |
+| Status enum | `DocumentStatus` | `StaffCertificateStatus` |
+| Validation status | `DocumentVerificationStatus` | `StaffCertificateValidationStatus` |
+| Repository | `DocumentsRepository` | `CertificatesRepository` |
+| Data Connect method | `upsertStaffDocument` | `upsertStaffCertificate` |
+| Navigator helper | `StaffNavigator.toDocumentUpload` | `StaffNavigator.toCertificateUpload` |
+
+---
+
+## 4. Implementation Status
+
+### ✅ Completed — Presentation Layer
+
+#### Routing
+- `StaffPaths.certificateUpload` constant used in `StaffPaths.childRoute` within `StaffCertificatesModule`.
+- `StaffNavigator.toCertificateUpload({StaffCertificate? certificate})` type-safe navigation helper wires the route argument.
+
+#### Domain Layer
+- `CertificatesRepository` interface defined with three methods:
+  - `getCertificates()` — fetch the current staff member's certificates.
+  - `uploadCertificate(...)` — upload file + trigger verification + persist record.
+  - `upsertCertificate(...)` — metadata-only update (no file re-upload).
+  - `deleteCertificate(...)` — remove a certificate by `ComplianceType`.
+- `UploadCertificateUseCase` wraps `uploadCertificate`; takes `UploadCertificateParams`:
+  - `certificationType` (`ComplianceType`) — required
+  - `name` (`String`) — required
+  - `filePath` (`String`) — required
+  - `expiryDate` (`DateTime?`) — optional
+  - `issuer` (`String?`) — optional
+  - `certificateNumber` (`String?`) — optional
+- `GetCertificatesUseCase` wraps `getCertificates()`.
+- `UpsertCertificateUseCase` wraps `upsertCertificate()` for metadata-only saves.
+- `DeleteCertificateUseCase` wraps `deleteCertificate()`.
+
+#### State Management
+- `CertificateUploadStatus` enum: `initial | uploading | success | failure`
+- `CertificateUploadState` (Equatable): tracks `status`, `isAttested`, `updatedCertificate`, `errorMessage`
+- `CertificateUploadCubit`:
+  - Guards upload behind `state.isAttested == true`.
+  - On success: emits `success` with the returned `StaffCertificate`.
+  - On failure: emits `failure` with the error message key via `BlocErrorHandler`.
+
+#### UI — `CertificateUploadPage`
+
+Accepts an optional `StaffCertificate? certificate` as a route argument. When provided, the form is pre-populated for editing; when `null`, the page is in "new certificate" mode.
+
+**Form fields:**
+- **Certificate Name** (`TextEditingController _nameController`) — required.
+- **Certificate Type** (`ComplianceType? _selectedType`) — `DropdownButton`, defaults to `ComplianceType.other`.
+- **Issuer** (`TextEditingController _issuerController`) — optional.
+- **Certificate Number** (`TextEditingController _numberController`) — optional.
+- **Expiry Date** (`DateTime? _selectedExpiryDate`) — date picker; defaults to 1 year from today.
+
+**File selection:**
+- `FilePickerService.pickFile(allowedExtensions: ['pdf', 'jpg', 'png'])`.
+- Selected file path stored in `String? _selectedFilePath`.
+
+**Attestation & submission:**
+- Attestation checkbox must be checked before submitting (mirrors Documents pattern).
+- Submit button enabled only when: a file is selected AND attestation is checked.
+- Loading state: `CircularProgressIndicator` replaces the submit button while `CertificateUploadStatus.uploading`.
+- On `success`: shows `UiSnackbar` (success type) and calls `Modular.to.pop()`.
+- On `failure`: shows `UiSnackbar` (error type); stays on page for retry.
+
+**App bar:**
+- `UiAppBar` with `certificate?.name ?? t.staff_certificates.upload_modal.title` as title.
+
+#### UI Guidelines (Consistent with Documents)
+Follow the same patterns defined in `documents/IMPLEMENTATION_WORKFLOW.md §3`:
+1. **Header & Instructions**: `UiAppBar` title = certificate name (or modal title). Body instructions use `UiTypography.body1m.textPrimary`.
+2. **File Selection Card**:
+   - Empty: neutral/primary bordered card inviting file pick.
+   - Selected: `UiColors.bgPopup` card with `UiConstants.radiusLg` rounding, `UiColors.primary` border, truncated file name, and explicit "Replace" action.
+3. **Bottom Footer / Attestation**: Fixed to `bottomNavigationBar` inside `SafeArea` + `Padding`; submit state tightly coupled to both file presence and attestation.
+
+#### Module Wiring — `StaffCertificatesModule`
+
+Binds (all lazy singletons unless noted):
+| Binding | Scope |
+|---------|-------|
+| `CertificatesRepository` → `CertificatesRepositoryImpl` | Lazy singleton |
+| `GetCertificatesUseCase` | Lazy singleton |
+| `DeleteCertificateUseCase` | Lazy singleton |
+| `UpsertCertificateUseCase` | Lazy singleton |
+| `UploadCertificateUseCase` | Lazy singleton |
+| `CertificatesCubit` | Lazy singleton |
+| `CertificateUploadCubit` | **Per-use** (non-singleton via `i.add<>`) |
+
+Routes:
+- `StaffPaths.childRoute(StaffPaths.certificates, StaffPaths.certificates)` → `CertificatesPage`
+- `StaffPaths.childRoute(StaffPaths.certificates, StaffPaths.certificateUpload)` → `CertificateUploadPage(certificate: r.args.data is StaffCertificate ? … : null)`
+
+#### `CertificatesPage` Integration
+- `CertificateCard.onTap` navigates to `CertificateUploadPage` with the `StaffCertificate` as route data.
+- After returning from the upload page, `loadCertificates()` is awaited to refresh the list (fixes `unawaited_futures` lint).
+
+#### Localization
+- Keys live under `staff_certificates.*` in `en.i18n.json` and `es.i18n.json`.
+- Relevant keys: `upload_modal.title`, `upload_modal.success_snackbar`, `upload_modal.name_label`, `upload_modal.replace`, `error_loading`.
+- Codegen: `dart run slang` generates `TranslationsStaffCertificatesEn` and its Spanish counterpart.
+
+---
+
+### ✅ Completed — Data Layer
+
+#### Data Connect Integration
+- `StaffConnectorRepository` interface includes `getStaffCertificates()` and `upsertStaffCertificate()`.
+- `deleteStaffCertificate(certificationType:)` implemented for certificate removal.
+- SDK regenerated via: `make dataconnect-generate-sdk ENV=dev`.
+
+#### Repository Implementation — `CertificatesRepositoryImpl`
+
+Constructor injects `FileUploadService`, `SignedUrlService`, `VerificationService`; uses `DataConnectService.instance` for Data Connect calls.
+
+**`uploadCertificate()` — 5-step orchestration:**
+
+```
+1. FileUploadService.uploadFile(...)
+     → fileName: 'staff_cert_<type>_<timestamp>.pdf'
+     → visibility: FileVisibility.private
+   Returns FileUploadResponse { fileUri }
+
+2. SignedUrlService.createSignedUrl(fileUri: uploadRes.fileUri)
+     → Generates an internal signed link for verification access
+
+3. VerificationService.createVerification(...)
+     → fileUri, type: certificationType.value
+     → category: 'CERTIFICATE'   ← distinguishes from DOCUMENT
+     → subjectType: 'STAFF'
+     → subjectId: await _service.getStaffId()
+
+4. StaffConnectorRepository.upsertStaffCertificate(...)
+     → certificationType, name, status: pending
+     → fileUrl: uploadRes.fileUri, expiry, issuer, certificateNumber
+     → validationStatus: pendingExpertReview
+
+5. getCertificates() → find & return the matching StaffCertificate
+```
+
+**`upsertCertificate()` — metadata-only update:**
+- Directly calls `upsertStaffCertificate(...)` without any file upload or verification step.
+- Used for editing certificate details after initial upload.
+
+**`deleteCertificate()` — record removal:**
+- Calls `deleteStaffCertificate(certificationType:)`.
+
+---
+
+## 5. State Management Reference
+
+```
+CertificateUploadStatus
+  ├── initial    — page just opened / form being filled
+  ├── uploading  — upload + verification in progress
+  ├── success    — certificate saved; navigate back (pop)
+  └── failure    — error; stay on page; show snackbar
+```
+
+**Cubit guards:**
+- Upload is blocked unless `state.isAttested == true`.
+- Submit button enabled only when both a file is selected AND attestation is checked.
+- Uses `BlocErrorHandler` mixin for consistent error emission.
+
+---
+
+## 6. StaffCertificateStatus Mapping Reference
+
+The backend uses a richer enum than the domain layer. Standard mapping:
+
+| Backend / Validation Status | Domain `StaffCertificateStatus` | Notes |
+|-----------------------------|----------------------------------|-------|
+| `VERIFIED` / `AUTO_PASS` / `APPROVED` | `verified` | Fully or AI-approved |
+| `UPLOADED` / `PENDING` / `PROCESSING` / `NEEDS_REVIEW` / `EXPIRING` | `pending` | Upload received; processing or awaiting renewal |
+| `AUTO_FAIL` / `REJECTED` / `ERROR` | `rejected` | AI or manual rejection / system error |
+| `MISSING` | `missing` | Not yet uploaded |
+
+`StaffCertificateValidationStatus` preserves the full backend granularity for detailed UI feedback (e.g., showing "Pending Expert Review" vs. "Auto-Failed").
+
+---
+
+## 7. Future Considerations
+
+1. **Expiry Notifications**: Certificates approaching expiry (domain status `pending` / backend `EXPIRING`) should surface a nudge in `CertificatesPage` or via push notification.
+2. **Re-verification on Edit**: When a certificate's file is replaced via `uploadCertificate`, a new verification job is triggered. Decide whether editing only metadata (via `upsertCertificate`) should also trigger re-verification.
+3. **Multiple Files per Certificate**: The current schema supports a single `fileUrl`. If multi-page certificates become a requirement, the Data Connect schema and `CertificatesRepository` interface will need extending.
+4. **Shared Compliance UI Components**: The file selection card and attestation footer patterns are duplicated between `DocumentUploadPage` and `CertificateUploadPage`. Consider extracting them into a shared `compliance_upload_widgets` package to reduce duplication.

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/data/repositories_impl/certificates_repository_impl.dart

@@ -1,4 +1,3 @@
-import 'package:firebase_data_connect/src/core/ref.dart';
 import 'package:krow_core/core.dart';
 import 'package:krow_data_connect/krow_data_connect.dart';
 import 'package:krow_domain/krow_domain.dart' as domain;
@@ -6,98 +5,111 @@ import 'package:krow_domain/krow_domain.dart' as domain;
 import '../../domain/repositories/certificates_repository.dart';
 
 /// Implementation of [CertificatesRepository] using Data Connect.
-///
-/// This class handles the communication with the backend via [DataConnectService].
-/// It maps raw generated data types to clean [domain.StaffDocument] entities.
 class CertificatesRepositoryImpl implements CertificatesRepository {
-  /// Creates a [CertificatesRepositoryImpl].
-  CertificatesRepositoryImpl() : _service = DataConnectService.instance;
+  CertificatesRepositoryImpl({
+    required FileUploadService uploadService,
+    required SignedUrlService signedUrlService,
+    required VerificationService verificationService,
+  }) : _service = DataConnectService.instance,
+       _uploadService = uploadService,
+       _signedUrlService = signedUrlService,
+       _verificationService = verificationService;
 
-  /// The Data Connect service instance.
   final DataConnectService _service;
+  final FileUploadService _uploadService;
+  final SignedUrlService _signedUrlService;
+  final VerificationService _verificationService;
 
   @override
-  Future<List<domain.StaffDocument>> getCertificates() async {
+  Future<List<domain.StaffCertificate>> getCertificates() async {
+    return _service.getStaffRepository().getStaffCertificates();
+  }
+
+  @override
+  Future<domain.StaffCertificate> uploadCertificate({
+    required domain.ComplianceType certificationType,
+    required String name,
+    required String filePath,
+    DateTime? expiryDate,
+    String? issuer,
+    String? certificateNumber,
+  }) async {
     return _service.run(() async {
+      // 1. Upload the file to cloud storage
+      final FileUploadResponse uploadRes = await _uploadService.uploadFile(
+        filePath: filePath,
+        fileName:
+            'staff_cert_${certificationType.name}_${DateTime.now().millisecondsSinceEpoch}.pdf',
+        visibility: domain.FileVisibility.private,
+      );
+
+      // 2. Generate a signed URL for verification service to access the file
+      // Wait, verification service might need this or just the URI.
+      // Following DocumentRepository behavior:
+      await _signedUrlService.createSignedUrl(fileUri: uploadRes.fileUri);
+
+      // 3. Initiate verification
+      // 3. Initiate verification
       final String staffId = await _service.getStaffId();
+      await _verificationService.createVerification(
+        fileUri: uploadRes.fileUri,
+        type: certificationType.value,
+        category: 'CERTIFICATE',
+        subjectType: 'STAFF',
+        subjectId: staffId,
+      );
 
-      // Execute the query via DataConnect generated SDK
-      final QueryResult<
-        ListStaffDocumentsByStaffIdData,
-        ListStaffDocumentsByStaffIdVariables
-      >
-      result = await _service.connector
-          .listStaffDocumentsByStaffId(staffId: staffId)
-          .execute();
+      // 4. Update/Create Certificate in Data Connect
+      await _service.getStaffRepository().upsertStaffCertificate(
+        certificationType: certificationType,
+        name: name,
+        status: domain.StaffCertificateStatus.pending,
+        fileUrl: uploadRes.fileUri,
+        expiry: expiryDate,
+        issuer: issuer,
+        certificateNumber: certificateNumber,
+        validationStatus:
+            domain.StaffCertificateValidationStatus.pendingExpertReview,
+      );
 
-      // Map the generated SDK types to pure Domain entities
-      return result.data.staffDocuments
-          .map(
-            (ListStaffDocumentsByStaffIdStaffDocuments doc) =>
-                _mapToDomain(doc),
-          )
-          .toList();
+      // 5. Return updated list or the specific certificate
+      final List<domain.StaffCertificate> certificates =
+          await getCertificates();
+      return certificates.firstWhere(
+        (domain.StaffCertificate c) => c.certificationType == certificationType,
+      );
     });
   }
 
-  /// Maps the Data Connect [ListStaffDocumentsByStaffIdStaffDocuments] to a domain [domain.StaffDocument].
-  domain.StaffDocument _mapToDomain(
-    ListStaffDocumentsByStaffIdStaffDocuments doc,
-  ) {
-    return domain.StaffDocument(
-      id: doc.id,
-      staffId: doc.staffId,
-      documentId: doc.documentId,
-      name: doc.document.name,
-      description: null, // Description not available in this query response
-      status: _mapStatus(doc.status),
-      documentUrl: doc.documentUrl,
-      expiryDate: doc.expiryDate == null
-          ? null
-          : DateTimeUtils.toDeviceTime(doc.expiryDate!.toDateTime()),
+  @override
+  Future<void> upsertCertificate({
+    required domain.ComplianceType certificationType,
+    required String name,
+    required domain.StaffCertificateStatus status,
+    String? fileUrl,
+    DateTime? expiry,
+    String? issuer,
+    String? certificateNumber,
+    domain.StaffCertificateValidationStatus? validationStatus,
+  }) async {
+    await _service.getStaffRepository().upsertStaffCertificate(
+      certificationType: certificationType,
+      name: name,
+      status: status,
+      fileUrl: fileUrl,
+      expiry: expiry,
+      issuer: issuer,
+      certificateNumber: certificateNumber,
+      validationStatus: validationStatus,
     );
   }
 
-  /// Maps the Data Connect [DocumentStatus] enum to the domain [domain.DocumentStatus].
-  domain.DocumentStatus _mapStatus(EnumValue<DocumentStatus> status) {
-    if (status is Known<DocumentStatus>) {
-      switch (status.value) {
-        case DocumentStatus.VERIFIED:
-          return domain.DocumentStatus.verified;
-        case DocumentStatus.PENDING:
-          return domain.DocumentStatus.pending;
-        case DocumentStatus.MISSING:
-          return domain.DocumentStatus.missing;
-        case DocumentStatus.UPLOADED:
-          return domain.DocumentStatus.pending;
-        case DocumentStatus.EXPIRING:
-          // 'EXPIRING' in backend is treated as 'verified' in domain,
-          // as the document is strictly valid until the expiry date.
-          return domain.DocumentStatus.verified;
-        case DocumentStatus.PROCESSING:
-          // TODO: Handle this case.
-          throw UnimplementedError();
-        case DocumentStatus.AUTO_PASS:
-          // TODO: Handle this case.
-          throw UnimplementedError();
-        case DocumentStatus.AUTO_FAIL:
-          // TODO: Handle this case.
-          throw UnimplementedError();
-        case DocumentStatus.NEEDS_REVIEW:
-          // TODO: Handle this case.
-          throw UnimplementedError();
-        case DocumentStatus.APPROVED:
-          // TODO: Handle this case.
-          throw UnimplementedError();
-        case DocumentStatus.REJECTED:
-          // TODO: Handle this case.
-          throw UnimplementedError();
-        case DocumentStatus.ERROR:
-          // TODO: Handle this case.
-          throw UnimplementedError();
-      }
-    }
-    // Fallback for unknown status
-    return domain.DocumentStatus.pending;
+  @override
+  Future<void> deleteCertificate({
+    required domain.ComplianceType certificationType,
+  }) async {
+    return _service.getStaffRepository().deleteStaffCertificate(
+      certificationType: certificationType,
+    );
   }
 }

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/domain/repositories/certificates_repository.dart

@@ -7,6 +7,31 @@ import 'package:krow_domain/krow_domain.dart';
 abstract interface class CertificatesRepository {
   /// Fetches the list of compliance certificates for the current staff member.
   ///
-  /// Returns a list of [StaffDocument] entities.
-  Future<List<StaffDocument>> getCertificates();
+  /// Returns a list of [StaffCertificate] entities.
+  Future<List<StaffCertificate>> getCertificates();
+
+  /// Uploads a certificate file and saves the record.
+  Future<StaffCertificate> uploadCertificate({
+    required ComplianceType certificationType,
+    required String name,
+    required String filePath,
+    DateTime? expiryDate,
+    String? issuer,
+    String? certificateNumber,
+  });
+
+  /// Deletes a staff certificate.
+  Future<void> deleteCertificate({required ComplianceType certificationType});
+
+  /// Upserts a certificate record (metadata only).
+  Future<void> upsertCertificate({
+    required ComplianceType certificationType,
+    required String name,
+    required StaffCertificateStatus status,
+    String? fileUrl,
+    DateTime? expiry,
+    String? issuer,
+    String? certificateNumber,
+    StaffCertificateValidationStatus? validationStatus,
+  });
 }

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/domain/usecases/delete_certificate_usecase.dart

@@ -0,0 +1,15 @@
+import 'package:krow_core/core.dart';
+import 'package:krow_domain/krow_domain.dart';
+import '../repositories/certificates_repository.dart';
+
+/// Use case for deleting a staff compliance certificate.
+class DeleteCertificateUseCase extends UseCase<ComplianceType, void> {
+  /// Creates a [DeleteCertificateUseCase].
+  DeleteCertificateUseCase(this._repository);
+  final CertificatesRepository _repository;
+
+  @override
+  Future<void> call(ComplianceType certificationType) {
+    return _repository.deleteCertificate(certificationType: certificationType);
+  }
+}

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/domain/usecases/get_certificates_usecase.dart

@@ -6,8 +6,7 @@ import '../repositories/certificates_repository.dart';
 ///
 /// Delegates the data retrieval to the [CertificatesRepository].
 /// Follows the strict one-to-one mapping between action and use case.
-class GetCertificatesUseCase extends NoInputUseCase<List<StaffDocument>> {
-
+class GetCertificatesUseCase extends NoInputUseCase<List<StaffCertificate>> {
   /// Creates a [GetCertificatesUseCase].
   ///
   /// Requires a [CertificatesRepository] to access the certificates data source.
@@ -15,7 +14,7 @@ class GetCertificatesUseCase extends NoInputUseCase<List<StaffDocument>> {
   final CertificatesRepository _repository;
 
   @override
-  Future<List<StaffDocument>> call() {
+  Future<List<StaffCertificate>> call() {
     return _repository.getCertificates();
   }
 }

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/domain/usecases/upload_certificate_usecase.dart

@@ -0,0 +1,54 @@
+import 'package:krow_core/core.dart';
+import 'package:krow_domain/krow_domain.dart';
+import '../repositories/certificates_repository.dart';
+
+/// Use case for uploading a staff compliance certificate.
+class UploadCertificateUseCase
+    extends UseCase<UploadCertificateParams, StaffCertificate> {
+  /// Creates an [UploadCertificateUseCase].
+  UploadCertificateUseCase(this._repository);
+  final CertificatesRepository _repository;
+
+  @override
+  Future<StaffCertificate> call(UploadCertificateParams params) {
+    return _repository.uploadCertificate(
+      certificationType: params.certificationType,
+      name: params.name,
+      filePath: params.filePath,
+      expiryDate: params.expiryDate,
+      issuer: params.issuer,
+      certificateNumber: params.certificateNumber,
+    );
+  }
+}
+
+/// Parameters for [UploadCertificateUseCase].
+class UploadCertificateParams {
+  /// Creates [UploadCertificateParams].
+  UploadCertificateParams({
+    required this.certificationType,
+    required this.name,
+    required this.filePath,
+    this.expiryDate,
+    this.issuer,
+    this.certificateNumber,
+  });
+
+  /// The type of certification.
+  final ComplianceType certificationType;
+
+  /// The name of the certificate.
+  final String name;
+
+  /// The local file path to upload.
+  final String filePath;
+
+  /// The expiry date of the certificate.
+  final DateTime? expiryDate;
+
+  /// The issuer of the certificate.
+  final String? issuer;
+
+  /// The certificate number.
+  final String? certificateNumber;
+}

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/domain/usecases/upsert_certificate_usecase.dart

@@ -0,0 +1,63 @@
+import 'package:krow_core/core.dart';
+import 'package:krow_domain/krow_domain.dart';
+import '../repositories/certificates_repository.dart';
+
+/// Use case for upserting a staff compliance certificate.
+class UpsertCertificateUseCase extends UseCase<UpsertCertificateParams, void> {
+  /// Creates an [UpsertCertificateUseCase].
+  UpsertCertificateUseCase(this._repository);
+  final CertificatesRepository _repository;
+
+  @override
+  Future<void> call(UpsertCertificateParams params) {
+    return _repository.upsertCertificate(
+      certificationType: params.certificationType,
+      name: params.name,
+      status: params.status,
+      fileUrl: params.fileUrl,
+      expiry: params.expiry,
+      issuer: params.issuer,
+      certificateNumber: params.certificateNumber,
+      validationStatus: params.validationStatus,
+    );
+  }
+}
+
+/// Parameters for [UpsertCertificateUseCase].
+class UpsertCertificateParams {
+  /// Creates [UpsertCertificateParams].
+  UpsertCertificateParams({
+    required this.certificationType,
+    required this.name,
+    required this.status,
+    this.fileUrl,
+    this.expiry,
+    this.issuer,
+    this.certificateNumber,
+    this.validationStatus,
+  });
+
+  /// The type of certification.
+  final ComplianceType certificationType;
+
+  /// The name of the certificate.
+  final String name;
+
+  /// The status of the certificate.
+  final StaffCertificateStatus status;
+
+  /// The URL of the certificate file.
+  final String? fileUrl;
+
+  /// The expiry date of the certificate.
+  final DateTime? expiry;
+
+  /// The issuer of the certificate.
+  final String? issuer;
+
+  /// The certificate number.
+  final String? certificateNumber;
+
+  /// The validation status of the certificate.
+  final StaffCertificateValidationStatus? validationStatus;
+}

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/presentation/blocs/certificate_upload/certificate_upload_cubit.dart

@@ -0,0 +1,41 @@
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:krow_core/core.dart';
+import 'package:krow_domain/krow_domain.dart';
+import '../../../domain/usecases/upload_certificate_usecase.dart';
+import 'certificate_upload_state.dart';
+
+class CertificateUploadCubit extends Cubit<CertificateUploadState>
+    with BlocErrorHandler<CertificateUploadState> {
+  CertificateUploadCubit(this._uploadCertificateUseCase)
+    : super(const CertificateUploadState());
+
+  final UploadCertificateUseCase _uploadCertificateUseCase;
+
+  void setAttested(bool value) {
+    emit(state.copyWith(isAttested: value));
+  }
+
+  Future<void> uploadCertificate(UploadCertificateParams params) async {
+    if (!state.isAttested) return;
+
+    emit(state.copyWith(status: CertificateUploadStatus.uploading));
+    await handleError(
+      emit: emit,
+      action: () async {
+        final StaffCertificate certificate = await _uploadCertificateUseCase(
+          params,
+        );
+        emit(
+          state.copyWith(
+            status: CertificateUploadStatus.success,
+            updatedCertificate: certificate,
+          ),
+        );
+      },
+      onError: (String errorKey) => state.copyWith(
+        status: CertificateUploadStatus.failure,
+        errorMessage: errorKey,
+      ),
+    );
+  }
+}

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/presentation/blocs/certificate_upload/certificate_upload_state.dart

@@ -0,0 +1,40 @@
+import 'package:equatable/equatable.dart';
+import 'package:krow_domain/krow_domain.dart';
+
+enum CertificateUploadStatus { initial, uploading, success, failure }
+
+class CertificateUploadState extends Equatable {
+  const CertificateUploadState({
+    this.status = CertificateUploadStatus.initial,
+    this.isAttested = false,
+    this.updatedCertificate,
+    this.errorMessage,
+  });
+
+  final CertificateUploadStatus status;
+  final bool isAttested;
+  final StaffCertificate? updatedCertificate;
+  final String? errorMessage;
+
+  CertificateUploadState copyWith({
+    CertificateUploadStatus? status,
+    bool? isAttested,
+    StaffCertificate? updatedCertificate,
+    String? errorMessage,
+  }) {
+    return CertificateUploadState(
+      status: status ?? this.status,
+      isAttested: isAttested ?? this.isAttested,
+      updatedCertificate: updatedCertificate ?? this.updatedCertificate,
+      errorMessage: errorMessage ?? this.errorMessage,
+    );
+  }
+
+  @override
+  List<Object?> get props => <Object?>[
+    status,
+    isAttested,
+    updatedCertificate,
+    errorMessage,
+  ];
+}

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/presentation/blocs/certificates/certificates_cubit.dart

@@ -2,23 +2,27 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:krow_core/core.dart';
 import 'package:krow_domain/krow_domain.dart';
 import '../../../domain/usecases/get_certificates_usecase.dart';
+import '../../../domain/usecases/delete_certificate_usecase.dart';
 import 'certificates_state.dart';
 
 class CertificatesCubit extends Cubit<CertificatesState>
     with BlocErrorHandler<CertificatesState> {
-
-  CertificatesCubit(this._getCertificatesUseCase)
-    : super(const CertificatesState()) {
+  CertificatesCubit(
+    this._getCertificatesUseCase,
+    this._deleteCertificateUseCase,
+  ) : super(const CertificatesState()) {
     loadCertificates();
   }
+
   final GetCertificatesUseCase _getCertificatesUseCase;
+  final DeleteCertificateUseCase _deleteCertificateUseCase;
 
   Future<void> loadCertificates() async {
     emit(state.copyWith(status: CertificatesStatus.loading));
     await handleError(
       emit: emit,
       action: () async {
-        final List<StaffDocument> certificates =
+        final List<StaffCertificate> certificates =
             await _getCertificatesUseCase();
         emit(
           state.copyWith(
@@ -27,12 +31,25 @@ class CertificatesCubit extends Cubit<CertificatesState>
           ),
         );
       },
-      onError:
-          (String errorKey) => state.copyWith(
+      onError: (String errorKey) => state.copyWith(
+        status: CertificatesStatus.failure,
+        errorMessage: errorKey,
+      ),
+    );
+  }
+
+  Future<void> deleteCertificate(ComplianceType type) async {
+    emit(state.copyWith(status: CertificatesStatus.loading));
+    await handleError(
+      emit: emit,
+      action: () async {
+        await _deleteCertificateUseCase(type);
+        await loadCertificates();
+      },
+      onError: (String errorKey) => state.copyWith(
         status: CertificatesStatus.failure,
         errorMessage: errorKey,
       ),
     );
   }
 }
-

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/presentation/blocs/certificates/certificates_state.dart

@@ -4,19 +4,19 @@ import 'package:krow_domain/krow_domain.dart';
 enum CertificatesStatus { initial, loading, success, failure }
 
 class CertificatesState extends Equatable {
-
   const CertificatesState({
     this.status = CertificatesStatus.initial,
-    List<StaffDocument>? certificates,
+    List<StaffCertificate>? certificates,
     this.errorMessage,
-  }) : certificates = certificates ?? const <StaffDocument>[];
+  }) : certificates = certificates ?? const <StaffCertificate>[];
+
   final CertificatesStatus status;
-  final List<StaffDocument> certificates;
+  final List<StaffCertificate> certificates;
   final String? errorMessage;
 
   CertificatesState copyWith({
     CertificatesStatus? status,
-    List<StaffDocument>? certificates,
+    List<StaffCertificate>? certificates,
     String? errorMessage,
   }) {
     return CertificatesState(
@@ -31,7 +31,10 @@ class CertificatesState extends Equatable {
 
   /// The number of verified certificates.
   int get completedCount => certificates
-      .where((StaffDocument doc) => doc.status == DocumentStatus.verified)
+      .where(
+        (StaffCertificate cert) =>
+            cert.validationStatus == StaffCertificateValidationStatus.approved,
+      )
       .length;
 
   /// The total number of certificates.

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/presentation/pages/certificate_upload_page.dart

@@ -0,0 +1,361 @@
+import 'package:design_system/design_system.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_modular/flutter_modular.dart';
+import 'package:krow_core/core.dart';
+import 'package:krow_domain/krow_domain.dart';
+import 'package:core_localization/core_localization.dart';
+import 'package:intl/intl.dart';
+
+import '../blocs/certificate_upload/certificate_upload_cubit.dart';
+import '../blocs/certificate_upload/certificate_upload_state.dart';
+import '../../domain/usecases/upload_certificate_usecase.dart';
+
+/// Page for uploading a certificate with metadata (expiry, issuer, etc).
+class CertificateUploadPage extends StatefulWidget {
+  const CertificateUploadPage({super.key, this.certificate});
+
+  /// The certificate being edited, or null for a new one.
+  final StaffCertificate? certificate;
+
+  @override
+  State<CertificateUploadPage> createState() => _CertificateUploadPageState();
+}
+
+class _CertificateUploadPageState extends State<CertificateUploadPage> {
+  String? _selectedFilePath;
+  DateTime? _selectedExpiryDate;
+  final TextEditingController _issuerController = TextEditingController();
+  final TextEditingController _numberController = TextEditingController();
+  final TextEditingController _nameController = TextEditingController();
+
+  ComplianceType? _selectedType;
+
+  final FilePickerService _filePicker = Modular.get<FilePickerService>();
+
+  @override
+  void initState() {
+    super.initState();
+    if (widget.certificate != null) {
+      _selectedExpiryDate = widget.certificate!.expiryDate;
+      _issuerController.text = widget.certificate!.issuer ?? '';
+      _numberController.text = widget.certificate!.certificateNumber ?? '';
+      _nameController.text = widget.certificate!.name;
+      _selectedType = widget.certificate!.certificationType;
+    } else {
+      _selectedType = ComplianceType.other;
+    }
+  }
+
+  @override
+  void dispose() {
+    _issuerController.dispose();
+    _numberController.dispose();
+    _nameController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _pickFile() async {
+    final String? path = await _filePicker.pickFile(
+      allowedExtensions: <String>['pdf', 'jpg', 'png'],
+    );
+
+    if (path != null) {
+      setState(() {
+        _selectedFilePath = path;
+      });
+    }
+  }
+
+  Future<void> _selectDate() async {
+    final DateTime? picked = await showDatePicker(
+      context: context,
+      initialDate:
+          _selectedExpiryDate ?? DateTime.now().add(const Duration(days: 365)),
+      firstDate: DateTime.now(),
+      lastDate: DateTime.now().add(const Duration(days: 3650)),
+    );
+
+    if (picked != null) {
+      setState(() {
+        _selectedExpiryDate = picked;
+      });
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return BlocProvider<CertificateUploadCubit>(
+      create: (BuildContext _) => Modular.get<CertificateUploadCubit>(),
+      child: BlocConsumer<CertificateUploadCubit, CertificateUploadState>(
+        listener: (BuildContext context, CertificateUploadState state) {
+          if (state.status == CertificateUploadStatus.success) {
+            UiSnackbar.show(
+              context,
+              message: t.staff_certificates.upload_modal.success_snackbar,
+              type: UiSnackbarType.success,
+            );
+            Modular.to.pop(); // Returns to certificates list
+          } else if (state.status == CertificateUploadStatus.failure) {
+            UiSnackbar.show(
+              context,
+              message: state.errorMessage ?? t.staff_certificates.error_loading,
+              type: UiSnackbarType.error,
+            );
+          }
+        },
+        builder: (BuildContext context, CertificateUploadState state) {
+          return Scaffold(
+            appBar: UiAppBar(
+              title:
+                  widget.certificate?.name ??
+                  t.staff_certificates.upload_modal.title,
+              onLeadingPressed: () => Modular.to.pop(),
+            ),
+            body: SingleChildScrollView(
+              padding: const EdgeInsets.all(UiConstants.space5),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: <Widget>[
+                  Text(
+                    t
+                        .staff_documents
+                        .upload
+                        .instructions, // Reusing instructions logic
+                    style: UiTypography.body1m.textPrimary,
+                  ),
+                  const SizedBox(height: UiConstants.space6),
+
+                  // Name Field
+                  Text(
+                    t.staff_certificates.upload_modal.name_label,
+                    style: UiTypography.body2m.textPrimary,
+                  ),
+                  const SizedBox(height: UiConstants.space2),
+                  TextField(
+                    controller: _nameController,
+                    decoration: InputDecoration(
+                      hintText: "e.g. Food Handler Permit",
+                      border: OutlineInputBorder(
+                        borderRadius: UiConstants.radiusLg,
+                      ),
+                    ),
+                  ),
+                  const SizedBox(height: UiConstants.space4),
+
+                  // Expiry Date Field
+                  Text(
+                    t.staff_certificates.upload_modal.expiry_label,
+                    style: UiTypography.body2m.textPrimary,
+                  ),
+                  const SizedBox(height: UiConstants.space2),
+                  InkWell(
+                    onTap: _selectDate,
+                    child: Container(
+                      padding: const EdgeInsets.symmetric(
+                        horizontal: UiConstants.space4,
+                        vertical: UiConstants.space3,
+                      ),
+                      decoration: BoxDecoration(
+                        border: Border.all(color: UiColors.border),
+                        borderRadius: UiConstants.radiusLg,
+                      ),
+                      child: Row(
+                        children: <Widget>[
+                          const Icon(
+                            UiIcons.calendar,
+                            size: 20,
+                            color: UiColors.textSecondary,
+                          ),
+                          const SizedBox(width: UiConstants.space3),
+                          Text(
+                            _selectedExpiryDate != null
+                                ? DateFormat(
+                                    'MMM dd, yyyy',
+                                  ).format(_selectedExpiryDate!)
+                                : t.staff_certificates.upload_modal.select_date,
+                            style: _selectedExpiryDate != null
+                                ? UiTypography.body1m.textPrimary
+                                : UiTypography.body1m.textSecondary,
+                          ),
+                        ],
+                      ),
+                    ),
+                  ),
+                  const SizedBox(height: UiConstants.space4),
+
+                  // Issuer Field
+                  Text(
+                    t.staff_certificates.upload_modal.issuer_label,
+                    style: UiTypography.body2m.textPrimary,
+                  ),
+                  const SizedBox(height: UiConstants.space2),
+                  TextField(
+                    controller: _issuerController,
+                    decoration: InputDecoration(
+                      hintText: "e.g. Department of Health",
+                      border: OutlineInputBorder(
+                        borderRadius: UiConstants.radiusLg,
+                      ),
+                    ),
+                  ),
+                  const SizedBox(height: UiConstants.space4),
+
+                  // File Selector
+                  Text(
+                    t.staff_certificates.upload_modal.upload_file,
+                    style: UiTypography.body2m.textPrimary,
+                  ),
+                  const SizedBox(height: UiConstants.space2),
+                  _FileSelector(
+                    selectedFilePath: _selectedFilePath,
+                    onTap: _pickFile,
+                  ),
+                ],
+              ),
+            ),
+            bottomNavigationBar: SafeArea(
+              child: Padding(
+                padding: const EdgeInsets.all(UiConstants.space5),
+                child: Column(
+                  mainAxisSize: MainAxisSize.min,
+                  children: <Widget>[
+                    // Attestation
+                    Row(
+                      children: <Widget>[
+                        Checkbox(
+                          value: state.isAttested,
+                          onChanged: (bool? val) =>
+                              BlocProvider.of<CertificateUploadCubit>(
+                                context,
+                              ).setAttested(val ?? false),
+                          activeColor: UiColors.primary,
+                        ),
+                        Expanded(
+                          child: Text(
+                            t.staff_documents.upload.attestation,
+                            style: UiTypography.body3r.textSecondary,
+                          ),
+                        ),
+                      ],
+                    ),
+                    const SizedBox(height: UiConstants.space4),
+                    SizedBox(
+                      width: double.infinity,
+                      child: ElevatedButton(
+                        onPressed:
+                            (_selectedFilePath != null &&
+                                state.isAttested &&
+                                _nameController.text.isNotEmpty)
+                            ? () =>
+                                  BlocProvider.of<CertificateUploadCubit>(
+                                    context,
+                                  ).uploadCertificate(
+                                    UploadCertificateParams(
+                                      certificationType: _selectedType!,
+                                      name: _nameController.text,
+                                      filePath: _selectedFilePath!,
+                                      expiryDate: _selectedExpiryDate,
+                                      issuer: _issuerController.text,
+                                      certificateNumber: _numberController.text,
+                                    ),
+                                  )
+                            : null,
+                        style: ElevatedButton.styleFrom(
+                          backgroundColor: UiColors.primary,
+                          padding: const EdgeInsets.symmetric(
+                            vertical: UiConstants.space4,
+                          ),
+                          shape: RoundedRectangleBorder(
+                            borderRadius: UiConstants.radiusLg,
+                          ),
+                        ),
+                        child: state.status == CertificateUploadStatus.uploading
+                            ? const CircularProgressIndicator(
+                                color: Colors.white,
+                              )
+                            : Text(
+                                t.staff_certificates.upload_modal.save,
+                                style: UiTypography.body1m.white,
+                              ),
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ),
+          );
+        },
+      ),
+    );
+  }
+}
+
+class _FileSelector extends StatelessWidget {
+  const _FileSelector({this.selectedFilePath, required this.onTap});
+
+  final String? selectedFilePath;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    if (selectedFilePath != null) {
+      return InkWell(
+        onTap: onTap,
+        child: Container(
+          padding: const EdgeInsets.all(UiConstants.space4),
+          decoration: BoxDecoration(
+            color: UiColors.tagActive,
+            border: Border.all(color: UiColors.primary),
+            borderRadius: UiConstants.radiusLg,
+          ),
+          child: Row(
+            children: <Widget>[
+              const Icon(UiIcons.file, color: UiColors.primary),
+              const SizedBox(width: UiConstants.space3),
+              Expanded(
+                child: Text(
+                  selectedFilePath!.split('/').last,
+                  style: UiTypography.body1m.textPrimary,
+                  overflow: TextOverflow.ellipsis,
+                ),
+              ),
+              Text(
+                t.staff_documents.upload.replace,
+                style: UiTypography.body3m.primary,
+              ),
+            ],
+          ),
+        ),
+      );
+    }
+
+    return InkWell(
+      onTap: onTap,
+      child: Container(
+        height: 120,
+        width: double.infinity,
+        decoration: BoxDecoration(
+          border: Border.all(color: UiColors.border, style: BorderStyle.solid),
+          borderRadius: UiConstants.radiusLg,
+          color: UiColors.background,
+        ),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: <Widget>[
+            const Icon(UiIcons.uploadCloud, size: 32, color: UiColors.primary),
+            const SizedBox(height: UiConstants.space2),
+            Text(
+              t.staff_certificates.upload_modal.drag_drop,
+              style: UiTypography.body2m,
+            ),
+            Text(
+              t.staff_certificates.upload_modal.supported_formats,
+              style: UiTypography.body3r.textSecondary,
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/presentation/pages/certificates_page.dart

@@ -2,6 +2,7 @@ import 'package:design_system/design_system.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_modular/flutter_modular.dart';
+import 'package:krow_core/core.dart';
 import 'package:krow_domain/krow_domain.dart';
 import 'package:core_localization/core_localization.dart';
 
@@ -9,7 +10,6 @@ import '../blocs/certificates/certificates_cubit.dart';
 import '../blocs/certificates/certificates_state.dart';
 import '../widgets/add_certificate_card.dart';
 import '../widgets/certificate_card.dart';
-import '../widgets/certificate_upload_modal.dart';
 import '../widgets/certificates_header.dart';
 
 /// Page for viewing and managing staff certificates.
@@ -51,7 +51,7 @@ class CertificatesPage extends StatelessWidget {
           );
         }
 
-        final List<StaffDocument> documents = state.certificates;
+        final List<StaffCertificate> documents = state.certificates;
 
         return Scaffold(
           backgroundColor: UiColors.background, // Matches 0xFFF8FAFC
@@ -65,25 +65,32 @@ class CertificatesPage extends StatelessWidget {
                 Transform.translate(
                   offset: const Offset(0, -48),
                   child: Padding(
-                    padding: const EdgeInsets.symmetric(horizontal: UiConstants.space5),
+                    padding: const EdgeInsets.symmetric(
+                      horizontal: UiConstants.space5,
+                    ),
                     child: Column(
                       children: <Widget>[
-                        ...documents.map((StaffDocument doc) => CertificateCard(
-                              document: doc,
-                              onUpload: () => _showUploadModal(context, doc),
-                              onEditExpiry: () => _showEditExpiryDialog(context, doc),
-                              onRemove: () => _showRemoveConfirmation(context, doc),
+                        ...documents.map(
+                          (StaffCertificate doc) => CertificateCard(
+                            certificate: doc,
+                            onUpload: () => _navigateToUpload(context, doc),
+                            onEditExpiry: () =>
+                                _showEditExpiryDialog(context, doc),
+                            onRemove: () =>
+                                _showRemoveConfirmation(context, doc),
                             onView: () {
                               UiSnackbar.show(
                                 context,
-                                  message: t.staff_certificates.card.opened_snackbar,
+                                message:
+                                    t.staff_certificates.card.opened_snackbar,
                                 type: UiSnackbarType.success,
                               );
                             },
-                            )),
+                          ),
+                        ),
                         const SizedBox(height: UiConstants.space4),
                         AddCertificateCard(
-                          onTap: () => _showUploadModal(context, null),
+                          onTap: () => _navigateToUpload(context, null),
                         ),
                         const SizedBox(height: UiConstants.space8),
                       ],
@@ -98,28 +105,29 @@ class CertificatesPage extends StatelessWidget {
     );
   }
 
-  void _showUploadModal(BuildContext context, StaffDocument? document) {
-    showModalBottomSheet<void>(
-      context: context,
-      isScrollControlled: true,
-      backgroundColor: Colors.transparent,
-      builder: (BuildContext context) => CertificateUploadModal(
-        document: document,
-        onSave: () {
-          // TODO: Implement upload via Cubit
-          // Modular.get<CertificatesCubit>().uploadCertificate(...);
-          Navigator.pop(context);
-        },
-        onCancel: () => Navigator.pop(context),
-      ),
+  Future<void> _navigateToUpload(
+    BuildContext context,
+    StaffCertificate? certificate,
+  ) async {
+    await Modular.to.pushNamed(
+      StaffPaths.certificateUpload,
+      arguments: certificate,
     );
+    // Reload certificates after returning from the upload page
+    await Modular.get<CertificatesCubit>().loadCertificates();
   }
 
-  void _showEditExpiryDialog(BuildContext context, StaffDocument document) {
-    _showUploadModal(context, document);
+  void _showEditExpiryDialog(
+    BuildContext context,
+    StaffCertificate certificate,
+  ) {
+    _navigateToUpload(context, certificate);
   }
 
-  void _showRemoveConfirmation(BuildContext context, StaffDocument document) {
+  void _showRemoveConfirmation(
+    BuildContext context,
+    StaffCertificate certificate,
+  ) {
     showDialog<void>(
       context: context,
       builder: (BuildContext context) => AlertDialog(
@@ -132,8 +140,9 @@ class CertificatesPage extends StatelessWidget {
           ),
           TextButton(
             onPressed: () {
-              // TODO: Implement delete via Cubit
-              // Modular.get<CertificatesCubit>().deleteCertificate(document.id);
+              Modular.get<CertificatesCubit>().deleteCertificate(
+                certificate.certificationType,
+              );
               Navigator.pop(context);
             },
             style: TextButton.styleFrom(foregroundColor: UiColors.destructive),

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/presentation/widgets/certificate_card.dart

@@ -5,16 +5,16 @@ import 'package:intl/intl.dart';
 import 'package:krow_domain/krow_domain.dart';
 
 class CertificateCard extends StatelessWidget {
-
   const CertificateCard({
     super.key,
-    required this.document,
+    required this.certificate,
     this.onUpload,
     this.onEditExpiry,
     this.onRemove,
     this.onView,
   });
-  final StaffDocument document;
+
+  final StaffCertificate certificate;
   final VoidCallback? onUpload;
   final VoidCallback? onEditExpiry;
   final VoidCallback? onRemove;
@@ -22,21 +22,30 @@ class CertificateCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    // Determine UI state from document
-    final bool isComplete = document.status == DocumentStatus.verified;
-    // Todo: Better logic for expring. Assuming if expiryDate is close.
-    // Prototype used 'EXPIRING' status. We map this logic:
-    final bool isExpiring = _isExpiring(document.expiryDate);
-    final bool isExpired = _isExpired(document.expiryDate);
+    // Determine UI state from certificate
+    final bool isComplete =
+        certificate.validationStatus ==
+        StaffCertificateValidationStatus.approved;
+    final bool isExpiring =
+        certificate.status == StaffCertificateStatus.expiring ||
+        certificate.status == StaffCertificateStatus.expiringSoon;
+    final bool isExpired = certificate.status == StaffCertificateStatus.expired;
 
     // Override isComplete if expiring or expired
     final bool showComplete = isComplete && !isExpired && !isExpiring;
 
-    final bool isPending = document.status == DocumentStatus.pending;
-    final bool isNotStarted = document.status == DocumentStatus.missing || document.status == DocumentStatus.rejected;
+    final bool isPending =
+        certificate.validationStatus ==
+        StaffCertificateValidationStatus.pendingExpertReview;
+    final bool isNotStarted =
+        certificate.status == StaffCertificateStatus.notStarted ||
+        certificate.validationStatus ==
+            StaffCertificateValidationStatus.rejected;
 
     // UI Properties helper
-    final _CertificateUiProps uiProps = _getUiProps(document.documentId);
+    final _CertificateUiProps uiProps = _getUiProps(
+      certificate.certificationType,
+    );
 
     return Container(
       margin: const EdgeInsets.only(bottom: UiConstants.space4),
@@ -64,7 +73,9 @@ class CertificateCard extends StatelessWidget {
               decoration: BoxDecoration(
                 color: UiColors.accent.withValues(alpha: 0.2), // Yellow tint
                 border: Border(
-                  bottom: BorderSide(color: UiColors.accent.withValues(alpha: 0.4)),
+                  bottom: BorderSide(
+                    color: UiColors.accent.withValues(alpha: 0.4),
+                  ),
                 ),
               ),
               child: Row(
@@ -78,13 +89,14 @@ class CertificateCard extends StatelessWidget {
                   Text(
                     isExpired
                         ? t.staff_certificates.card.expired
-                        : t.staff_certificates.card.expires_in_days(days: _daysUntilExpiry(document.expiryDate)),
+                        : t.staff_certificates.card.expires_in_days(
+                            days: _daysUntilExpiry(certificate.expiryDate),
+                          ),
                     style: UiTypography.body3m.textPrimary,
                   ),
                 ],
               ),
             ),
-
           Padding(
             padding: const EdgeInsets.all(UiConstants.space5),
             child: Row(
@@ -151,12 +163,12 @@ class CertificateCard extends StatelessWidget {
                               crossAxisAlignment: CrossAxisAlignment.start,
                               children: <Widget>[
                                 Text(
-                                  document.name,
+                                  certificate.name,
                                   style: UiTypography.body1m.textPrimary,
                                 ),
                                 const SizedBox(height: 2),
                                 Text(
-                                  document.description ?? '', // Optional description
+                                  certificate.description ?? '',
                                   style: UiTypography.body3r.textSecondary,
                                 ),
                               ],
@@ -170,11 +182,10 @@ class CertificateCard extends StatelessWidget {
                         ],
                       ),
                       const SizedBox(height: UiConstants.space4),
-
-                      if (showComplete) _buildCompleteStatus(document.expiryDate),
-
-                      if (isExpiring || isExpired) _buildExpiringStatus(context, document.expiryDate),
-
+                      if (showComplete)
+                        _buildCompleteStatus(certificate.expiryDate),
+                      if (isExpiring || isExpired)
+                        _buildExpiringStatus(context, certificate.expiryDate),
                       if (isNotStarted)
                         SizedBox(
                           width: double.infinity,
@@ -207,7 +218,6 @@ class CertificateCard extends StatelessWidget {
                             ),
                           ),
                         ),
-
                       if (showComplete || isExpiring || isExpired) ...<Widget>[
                         const SizedBox(height: UiConstants.space3),
                         SizedBox(
@@ -281,7 +291,9 @@ class CertificateCard extends StatelessWidget {
         ),
         if (expiryDate != null)
           Text(
-            t.staff_certificates.card.exp(date: DateFormat('MMM d, yyyy').format(expiryDate)),
+            t.staff_certificates.card.exp(
+              date: DateFormat('MMM d, yyyy').format(expiryDate),
+            ),
             style: UiTypography.body3r.textSecondary,
           ),
       ],
@@ -308,9 +320,7 @@ class CertificateCard extends StatelessWidget {
                 const SizedBox(width: UiConstants.space2),
                 Text(
                   t.staff_certificates.card.expiring_soon,
-                  style: UiTypography.body2m.copyWith(
-                    color: UiColors.primary,
-                  ),
+                  style: UiTypography.body2m.copyWith(color: UiColors.primary),
                 ),
               ],
             ),
@@ -318,7 +328,9 @@ class CertificateCard extends StatelessWidget {
               Padding(
                 padding: const EdgeInsets.only(top: 4),
                 child: Text(
-                  t.staff_certificates.card.exp(date: DateFormat('MMM d, yyyy').format(expiryDate)),
+                  t.staff_certificates.card.exp(
+                    date: DateFormat('MMM d, yyyy').format(expiryDate),
+                  ),
                   style: UiTypography.body3r.copyWith(
                     color: UiColors.textSecondary,
                   ),
@@ -330,10 +342,7 @@ class CertificateCard extends StatelessWidget {
           children: <Widget>[
             _buildIconButton(UiIcons.eye, onView),
             const SizedBox(width: UiConstants.space2),
-            _buildSmallOutlineButton(
-              t.staff_certificates.card.renew,
-              onUpload,
-            ),
+            _buildSmallOutlineButton(t.staff_certificates.card.renew, onUpload),
           ],
         ),
       ],
@@ -347,12 +356,9 @@ class CertificateCard extends StatelessWidget {
       child: Container(
         width: 32,
         height: 32,
-        decoration: BoxDecoration(
+        decoration: const BoxDecoration(
           shape: BoxShape.circle,
           color: UiColors.transparent,
-          border: Border.all(
-            color: UiColors.transparent,
-          ),
         ),
         child: Center(
           child: Icon(icon, size: 16, color: UiColors.textSecondary),
@@ -365,10 +371,10 @@ class CertificateCard extends StatelessWidget {
     return OutlinedButton(
       onPressed: onTap,
       style: OutlinedButton.styleFrom(
-        side: BorderSide(color: UiColors.primary.withValues(alpha: 0.4)), // Primary with opacity
-        shape: RoundedRectangleBorder(
-          borderRadius: UiConstants.radiusFull,
-        ),
+        side: BorderSide(
+          color: UiColors.primary.withValues(alpha: 0.4),
+        ), // Primary with opacity
+        shape: RoundedRectangleBorder(borderRadius: UiConstants.radiusFull),
         padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 0),
         minimumSize: const Size(0, 32),
       ),
@@ -379,30 +385,19 @@ class CertificateCard extends StatelessWidget {
     );
   }
 
-  bool _isExpiring(DateTime? expiry) {
-    if (expiry == null) return false;
-    final int days = expiry.difference(DateTime.now()).inDays;
-    return days >= 0 && days <= 30; // Close to expiry but not expired
-  }
-
-  bool _isExpired(DateTime? expiry) {
-    if (expiry == null) return false;
-    return expiry.difference(DateTime.now()).inDays < 0;
-  }
-
   int _daysUntilExpiry(DateTime? expiry) {
     if (expiry == null) return 0;
     return expiry.difference(DateTime.now()).inDays;
   }
 
   // Mock mapping for UI props based on ID
-  _CertificateUiProps _getUiProps(String id) {
-    switch (id) {
-      case 'background':
+  _CertificateUiProps _getUiProps(ComplianceType type) {
+    switch (type) {
+      case ComplianceType.backgroundCheck:
         return _CertificateUiProps(UiIcons.fileCheck, UiColors.primary);
-      case 'food_handler':
+      case ComplianceType.foodHandler:
         return _CertificateUiProps(UiIcons.utensils, UiColors.primary);
-      case 'rbs':
+      case ComplianceType.rbs:
         return _CertificateUiProps(UiIcons.wine, UiColors.foreground);
       default:
         // Default generic icon

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/presentation/widgets/certificate_upload_modal.dart

@@ -1,21 +1,19 @@
 import 'package:core_localization/core_localization.dart';
 import 'package:design_system/design_system.dart';
 import 'package:flutter/material.dart';
+import 'package:krow_domain/krow_domain.dart';
 
 /// Modal for uploading or editing a certificate expiry.
 class CertificateUploadModal extends StatelessWidget {
-
   const CertificateUploadModal({
     super.key,
-    this.document,
+    this.certificate,
     required this.onSave,
     required this.onCancel,
   });
-  /// The document being edited, or null for a new upload.
-  // ignore: unused_field
-  final dynamic
-  document; // Using dynamic for now as we don't import domain here to avoid direct coupling if possible, but actually we should import domain.
-  // Ideally, widgets should be dumb. Let's import domain.
+
+  /// The certificate being edited, or null for a new upload.
+  final StaffCertificate? certificate;
 
   final VoidCallback onSave;
   final VoidCallback onCancel;

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/lib/src/staff_certificates_module.dart

@@ -1,18 +1,29 @@
+import 'package:flutter/material.dart';
 import 'package:flutter_modular/flutter_modular.dart';
 import 'package:krow_core/core.dart';
+import 'package:krow_domain/krow_domain.dart';
 
 import 'data/repositories_impl/certificates_repository_impl.dart';
 import 'domain/repositories/certificates_repository.dart';
 import 'domain/usecases/get_certificates_usecase.dart';
+import 'domain/usecases/delete_certificate_usecase.dart';
+import 'domain/usecases/upsert_certificate_usecase.dart';
+import 'domain/usecases/upload_certificate_usecase.dart';
 import 'presentation/blocs/certificates/certificates_cubit.dart';
+import 'presentation/blocs/certificate_upload/certificate_upload_cubit.dart';
+import 'presentation/pages/certificate_upload_page.dart';
 import 'presentation/pages/certificates_page.dart';
 
 class StaffCertificatesModule extends Module {
   @override
   void binds(Injector i) {
     i.addLazySingleton<CertificatesRepository>(CertificatesRepositoryImpl.new);
-    i.addLazySingleton(GetCertificatesUseCase.new);
-    i.addLazySingleton(CertificatesCubit.new);
+    i.addLazySingleton<GetCertificatesUseCase>(GetCertificatesUseCase.new);
+    i.addLazySingleton<DeleteCertificateUseCase>(DeleteCertificateUseCase.new);
+    i.addLazySingleton<UpsertCertificateUseCase>(UpsertCertificateUseCase.new);
+    i.addLazySingleton<UploadCertificateUseCase>(UploadCertificateUseCase.new);
+    i.addLazySingleton<CertificatesCubit>(CertificatesCubit.new);
+    i.add<CertificateUploadCubit>(CertificateUploadCubit.new);
   }
 
   @override
@@ -21,5 +32,16 @@ class StaffCertificatesModule extends Module {
       StaffPaths.childRoute(StaffPaths.certificates, StaffPaths.certificates),
       child: (_) => const CertificatesPage(),
     );
+    r.child(
+      StaffPaths.childRoute(
+        StaffPaths.certificates,
+        StaffPaths.certificateUpload,
+      ),
+      child: (BuildContext context) => CertificateUploadPage(
+        certificate: r.args.data is StaffCertificate
+            ? r.args.data as StaffCertificate
+            : null,
+      ),
+    );
   }
 }

apps/mobile/packages/features/staff/profile_sections/compliance/certificates/pubspec.yaml

@@ -12,6 +12,7 @@ dependencies:
     sdk: flutter
   flutter_bloc: ^8.1.0
   equatable: ^2.0.5
+  intl: ^0.20.0
   get_it: ^7.6.0
   flutter_modular: ^6.3.0