fix(frontend): align issue types with backend enums

- Fix IssueStatus: remove 'done', keep 'closed'
- Add IssuePriority 'critical' level
- Add IssueType enum (epic, story, task, bug)
- Update constants, hooks, and mocks to match
- Fix StatusWorkflow component icons

frontend/src/features/issues/mocks.ts

@@ -16,6 +16,7 @@ export const mockIssues: IssueSummary[] = [
   {
     id: 'ISS-001',
     number: 42,
+    type: 'story',
     title: 'Implement user authentication flow',
     description:
       'Create complete authentication flow with login, register, and password reset.',
@@ -31,6 +32,7 @@ export const mockIssues: IssueSummary[] = [
   {
     id: 'ISS-002',
     number: 43,
+    type: 'task',
     title: 'Design product catalog component',
     description: 'Create reusable product card and catalog grid components.',
     status: 'in_review',
@@ -45,6 +47,7 @@ export const mockIssues: IssueSummary[] = [
   {
     id: 'ISS-003',
     number: 44,
+    type: 'bug',
     title: 'Fix cart total calculation bug',
     description: 'Cart total shows incorrect amount when discount is applied.',
     status: 'blocked',
@@ -60,6 +63,7 @@ export const mockIssues: IssueSummary[] = [
   {
     id: 'ISS-004',
     number: 45,
+    type: 'story',
     title: 'Add product search functionality',
     description: 'Implement full-text search with filters for the product catalog.',
     status: 'open',
@@ -74,9 +78,10 @@ export const mockIssues: IssueSummary[] = [
   {
     id: 'ISS-005',
     number: 46,
+    type: 'task',
     title: 'Optimize database queries for product listing',
     description: 'Performance optimization for product queries with pagination.',
-    status: 'done',
+    status: 'closed',
     priority: 'low',
     labels: ['performance', 'backend', 'database'],
     sprint: 'Sprint 2',
@@ -88,9 +93,10 @@ export const mockIssues: IssueSummary[] = [
   {
     id: 'ISS-006',
     number: 47,
+    type: 'task',
     title: 'Create checkout page wireframes',
     description: 'Design wireframes for the checkout flow including payment selection.',
-    status: 'done',
+    status: 'closed',
     priority: 'high',
     labels: ['design', 'checkout', 'ui'],
     sprint: 'Sprint 2',
@@ -102,6 +108,7 @@ export const mockIssues: IssueSummary[] = [
   {
     id: 'ISS-007',
     number: 48,
+    type: 'story',
     title: 'Implement responsive navigation',
     description: 'Create mobile-friendly navigation with hamburger menu.',
     status: 'open',
@@ -116,6 +123,7 @@ export const mockIssues: IssueSummary[] = [
   {
     id: 'ISS-008',
     number: 49,
+    type: 'task',
     title: 'Set up E2E test framework',
     description: 'Configure Playwright for end-to-end testing.',
     status: 'in_progress',
@@ -135,6 +143,7 @@ export const mockIssues: IssueSummary[] = [
 export const mockIssueDetail: IssueDetail = {
   id: 'ISS-001',
   number: 42,
+  type: 'story',
   title: 'Implement user authentication flow',
   description: `## Overview
 Create a complete authentication flow for the e-commerce platform.