Implement approved/rejected quantity triggers and warehouse inventory

Database Triggers Implementation:
- Added automatic quantity calculation triggers for scanfg_orders
- Added automatic quantity calculation triggers for scan1_orders (T1 phase)
- Triggers calculate based on CP_base_code grouping (8 digits)
- Quality code: 0 = approved, != 0 = rejected
- Quantities set at insertion time (BEFORE INSERT trigger)
- Added create_triggers() function to initialize_db.py

Warehouse Inventory Enhancement:
- Analyzed old app database quantity calculation logic
- Created comprehensive trigger implementation guide
- Added trigger verification and testing procedures
- Documented data migration strategy

Documentation Added:
- APPROVED_REJECTED_QUANTITIES_ANALYSIS.md - Old app logic analysis
- DATABASE_TRIGGERS_IMPLEMENTATION.md - v2 implementation guide
- WAREHOUSE_INVENTORY_IMPLEMENTATION.md - Inventory view feature

Files Modified:
- initialize_db.py: Added create_triggers() function and call in main()
- Documentation: 3 comprehensive guides for database and inventory management

Quality Metrics:
- Triggers maintain legacy compatibility
- Automatic calculation ensures data consistency
- Performance optimized at database level
- Comprehensive testing documented

app/modules/warehouse/routes.py

@@ -6,7 +6,8 @@ from app.modules.warehouse.warehouse import (
     get_all_locations, add_location, update_location, delete_location, 
     delete_multiple_locations, get_location_by_id,
     search_box_by_number, search_location_with_boxes, 
-    assign_box_to_location, move_box_to_new_location
+    assign_box_to_location, move_box_to_new_location,
+    get_cp_inventory_list, search_cp_code, search_by_box_number, get_cp_details
 )
 import logging
 
@@ -215,3 +216,120 @@ def api_get_locations():
     
     locations = get_all_locations()
     return jsonify({'success': True, 'locations': locations}), 200
+
+
+# ============================================================================
+# API Routes for CP Inventory View
+# ============================================================================
+
+@warehouse_bp.route('/api/cp-inventory', methods=['GET'], endpoint='api_cp_inventory')
+def api_cp_inventory():
+    """Get CP inventory list - all CP articles with box and location info"""
+    if 'user_id' not in session:
+        return jsonify({'success': False, 'error': 'Unauthorized'}), 401
+    
+    try:
+        limit = request.args.get('limit', 100, type=int)
+        offset = request.args.get('offset', 0, type=int)
+        
+        # Validate pagination parameters
+        if limit > 1000:
+            limit = 1000
+        if limit < 1:
+            limit = 50
+        if offset < 0:
+            offset = 0
+        
+        inventory = get_cp_inventory_list(limit=limit, offset=offset)
+        
+        return jsonify({
+            'success': True,
+            'inventory': inventory,
+            'count': len(inventory),
+            'limit': limit,
+            'offset': offset
+        }), 200
+    except Exception as e:
+        logger.error(f"Error getting CP inventory: {e}")
+        return jsonify({'success': False, 'error': str(e)}), 500
+
+
+@warehouse_bp.route('/api/search-cp', methods=['POST'], endpoint='api_search_cp')
+def api_search_cp():
+    """Search for CP code in warehouse inventory"""
+    if 'user_id' not in session:
+        return jsonify({'success': False, 'error': 'Unauthorized'}), 401
+    
+    try:
+        data = request.get_json()
+        cp_code = data.get('cp_code', '').strip()
+        
+        if not cp_code or len(cp_code) < 2:
+            return jsonify({'success': False, 'error': 'CP code must be at least 2 characters'}), 400
+        
+        results = search_cp_code(cp_code)
+        
+        return jsonify({
+            'success': True,
+            'results': results,
+            'count': len(results),
+            'search_term': cp_code
+        }), 200
+    except Exception as e:
+        logger.error(f"Error searching CP code: {e}")
+        return jsonify({'success': False, 'error': str(e)}), 500
+
+
+@warehouse_bp.route('/api/search-cp-box', methods=['POST'], endpoint='api_search_cp_box')
+def api_search_cp_box():
+    """Search for box number and get all CP codes in it"""
+    if 'user_id' not in session:
+        return jsonify({'success': False, 'error': 'Unauthorized'}), 401
+    
+    try:
+        data = request.get_json()
+        box_number = data.get('box_number', '').strip()
+        
+        if not box_number or len(box_number) < 1:
+            return jsonify({'success': False, 'error': 'Box number is required'}), 400
+        
+        results = search_by_box_number(box_number)
+        
+        return jsonify({
+            'success': True,
+            'results': results,
+            'count': len(results),
+            'search_term': box_number
+        }), 200
+    except Exception as e:
+        logger.error(f"Error searching by box number: {e}")
+        return jsonify({'success': False, 'error': str(e)}), 500
+
+
+@warehouse_bp.route('/api/cp-details/<cp_code>', methods=['GET'], endpoint='api_cp_details')
+def api_cp_details(cp_code):
+    """Get detailed information for a CP code and all its variations"""
+    if 'user_id' not in session:
+        return jsonify({'success': False, 'error': 'Unauthorized'}), 401
+    
+    try:
+        cp_code = cp_code.strip().upper()
+        
+        # Ensure CP code is properly formatted (at least "CP00000001")
+        if not cp_code.startswith('CP') or len(cp_code) < 10:
+            return jsonify({'success': False, 'error': 'Invalid CP code format'}), 400
+        
+        # Extract base CP code (first 10 characters)
+        cp_base = cp_code[:10]
+        
+        details = get_cp_details(cp_base)
+        
+        return jsonify({
+            'success': True,
+            'cp_code': cp_base,
+            'details': details,
+            'count': len(details)
+        }), 200
+    except Exception as e:
+        logger.error(f"Error getting CP details: {e}")
+        return jsonify({'success': False, 'error': str(e)}), 500