Implement 5 UX enhancements for ingredient management

This commit implements the requested enhancements for the ingredient
quick-add system and batch management:

**1. Duplicate Detection**
- Real-time Levenshtein distance-based similarity checking
- Shows warning with top 3 similar ingredients (70%+ similarity)
- Prevents accidental duplicate creation
- Location: QuickAddIngredientModal.tsx

**2. Smart Category Suggestions**
- Auto-populates category based on ingredient name patterns
- Supports Spanish and English ingredient names
- Shows visual indicator when category is AI-suggested
- Pattern matching for: Baking, Dairy, Fruits, Vegetables, Meat, Seafood, Spices
- Location: ingredientHelpers.ts

**3. Quick Templates**
- 10 pre-configured common bakery ingredients
- One-click template application
- Templates include: Flour, Butter, Sugar, Eggs, Yeast, Milk, Chocolate, Vanilla, Salt, Cream
- Each template has sensible defaults (shelf life, refrigeration requirements)
- Location: QuickAddIngredientModal.tsx

**4. Batch Creation Mode**
- BatchAddIngredientsModal component for adding multiple ingredients at once
- Table-based interface for efficient data entry
- "Load from Templates" quick action
- Duplicate detection within batch
- Partial success handling (some ingredients succeed, some fail)
- Location: BatchAddIngredientsModal.tsx
- Integration: UploadSalesDataStep.tsx (2 buttons: "Add One" / "Add Multiple")

**5. Dashboard Alert for Incomplete Ingredients**
- IncompleteIngredientsAlert component on dashboard
- Queries ingredients with needs_review metadata flag
- Shows count badge and first 5 incomplete ingredients
- "Complete Information" button links to inventory page
- Only shows when incomplete ingredients exist
- Location: IncompleteIngredientsAlert.tsx
- Integration: DashboardPage.tsx

**New Files Created:**
- ingredientHelpers.ts - Utilities for duplicate detection, smart suggestions, templates
- BatchAddIngredientsModal.tsx - Batch ingredient creation component
- IncompleteIngredientsAlert.tsx - Dashboard alert component

**Files Modified:**
- QuickAddIngredientModal.tsx - Added duplicate detection, smart suggestions, templates
- UploadSalesDataStep.tsx - Integrated batch creation modal
- DashboardPage.tsx - Added incomplete ingredients alert

**Technical Highlights:**
- Levenshtein distance algorithm for fuzzy name matching
- Pattern-based category suggestions (supports 100+ ingredient patterns)
- Metadata tracking (needs_review, created_context)
- Real-time validation and error handling
- Responsive UI with animations
- Consistent with existing design system

All features built and tested successfully.
Build time: 21.29s

frontend/src/pages/app/DashboardPage.tsx

@@ -4,6 +4,7 @@ import { useTranslation } from 'react-i18next';
 import { PageHeader } from '../../components/layout';
 import StatsGrid from '../../components/ui/Stats/StatsGrid';
 import RealTimeAlerts from '../../components/domain/dashboard/RealTimeAlerts';
+import { IncompleteIngredientsAlert } from '../../components/domain/dashboard/IncompleteIngredientsAlert';
 import PendingPOApprovals from '../../components/domain/dashboard/PendingPOApprovals';
 import TodayProduction from '../../components/domain/dashboard/TodayProduction';
 // Sustainability widget removed - now using stats in StatsGrid
@@ -430,6 +431,9 @@ const DashboardPage: React.FC = () => {
           <RealTimeAlerts />
         </div>
 
+        {/* 1.5. Incomplete Ingredients Alert */}
+        <IncompleteIngredientsAlert />
+
         {/* 2. Pending PO Approvals - What purchase orders need approval? */}
         <div data-tour="pending-po-approvals">
           <PendingPOApprovals