fix(frontend): Fix critical type safety issues from code review

Address all Critical and High Priority issues identified in frontend code review report:

Critical Issues Fixed:
- Created unified logger utility (lib/utils/logger.ts) to replace all console.log statements
- Consolidated User type definitions - removed duplicate from authStore, using single source from types/user.ts
- Eliminated 'any' types in API client - added proper generic types with AxiosRequestConfig
- Fixed SignalR ConnectionManager - replaced 'any' with generic types <T>
- Created API error types (lib/types/errors.ts) with ApiError and getErrorMessage helper
- Fixed IssueCard component - removed all type assertions, created discriminated union types for Kanban items
- Added React.memo to IssueCard for performance optimization
- Added proper ARIA labels and accessibility attributes to IssueCard

High Priority Issues Fixed:
- Fixed hardcoded user ID in CreateProjectDialog - now uses actual user from authStore
- Added useCallback to CreateProjectDialog onSubmit handler
- Fixed error handlers in use-epics.ts - replaced 'any' with ApiError type
- Updated all error handling to use logger and getErrorMessage

Type Safety Improvements:
- Created KanbanItem discriminated union (KanbanEpic | KanbanStory | KanbanTask) with proper type guards
- Added 'never' types to prevent invalid property access
- Fixed User interface to include all required fields (createdAt, updatedAt)
- Maintained backward compatibility with LegacyKanbanBoard for existing code

Files Changed:
- lib/utils/logger.ts - New centralized logging utility
- lib/types/errors.ts - New API error types and helpers
- types/user.ts - Consolidated User type with TenantRole
- types/kanban.ts - New discriminated union types for type-safe Kanban items
- components/features/kanban/IssueCard.tsx - Type-safe with React.memo
- components/features/projects/CreateProjectDialog.tsx - Fixed hardcoded user ID, added useCallback
- lib/api/client.ts - Eliminated 'any', added proper generics
- lib/signalr/ConnectionManager.ts - Replaced console.log, added generics
- lib/hooks/use-epics.ts - Fixed error handler types
- stores/authStore.ts - Removed duplicate User type
- lib/hooks/useAuth.ts - Added createdAt field to User

TypeScript compilation: ✅ All type checks passing (0 errors)

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

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

components/projects/story-form.tsx

@@ -27,6 +27,7 @@ import { useEpics } from '@/lib/hooks/use-epics';
 import type { Story, WorkItemPriority } from '@/types/project';
 import { toast } from 'sonner';
 import { Loader2 } from 'lucide-react';
+import { useAuthStore } from '@/stores/authStore';
 
 const storySchema = z.object({
   epicId: z.string().min(1, 'Parent Epic is required'),
@@ -64,6 +65,7 @@ export function StoryForm({
   onCancel,
 }: StoryFormProps) {
   const isEditing = !!story;
+  const user = useAuthStore((state) => state.user);
   const createStory = useCreateStory();
   const updateStory = useUpdateStory();
 
@@ -96,13 +98,23 @@ export function StoryForm({
         });
         toast.success('Story updated successfully');
       } else {
+        if (!user?.id) {
+          toast.error('User not authenticated');
+          return;
+        }
+        if (!projectId) {
+          toast.error('Project ID is required');
+          return;
+        }
         await createStory.mutateAsync({
           epicId: data.epicId,
+          projectId,
           title: data.title,
           description: data.description,
           priority: data.priority,
           estimatedHours:
             typeof data.estimatedHours === 'number' ? data.estimatedHours : undefined,
+          createdBy: user.id,
         });
         toast.success('Story created successfully');
       }