Implement boxes management module with auto-numbered box creation

- Add boxes_crates database table with BIGINT IDs and 8-digit auto-numbered box_numbers
- Implement boxes CRUD operations (add, edit, update, delete, delete_multiple)
- Create boxes route handlers with POST actions for all operations
- Add boxes.html template with 3-panel layout matching warehouse locations module
- Implement barcode generation and printing with JsBarcode and QZ Tray integration
- Add browser print fallback for when QZ Tray is not available
- Simplify create box form to single button with auto-generation
- Fix JavaScript null reference errors with proper element validation
- Convert tuple data to dictionaries for Jinja2 template compatibility
- Register boxes blueprint in Flask app initialization

app/templates/modules/warehouse/set_boxes_locations.html

@@ -0,0 +1,43 @@
+{% extends "base.html" %}
+
+{% block title %}Set Boxes Locations - Quality App v2{% endblock %}
+
+{% block content %}
+<div class="container-fluid py-5">
+    <div class="row mb-4">
+        <div class="col-12">
+            <div class="d-flex justify-content-between align-items-center">
+                <div>
+                    <h1 class="mb-2">
+                        <i class="fas fa-cube"></i> Set Boxes Locations
+                    </h1>
+                    <p class="text-muted">Add or update articles in the warehouse inventory</p>
+                </div>
+                <a href="{{ url_for('warehouse.warehouse_index') }}" class="btn btn-secondary">
+                    <i class="fas fa-arrow-left"></i> Back to Warehouse
+                </a>
+            </div>
+        </div>
+    </div>
+
+    <div class="row">
+        <div class="col-12">
+            <div class="card shadow-sm">
+                <div class="card-header bg-light">
+                    <div class="d-flex justify-content-between align-items-center">
+                        <h5 class="mb-0"><i class="fas fa-list"></i> Articles List</h5>
+                        <button class="btn btn-danger btn-sm" data-bs-toggle="modal" data-bs-target="#addArticleModal">
+                            <i class="fas fa-plus"></i> Add Article
+                        </button>
+                    </div>
+                </div>
+                <div class="card-body">
+                    <p class="text-muted">
+                        <i class="fas fa-info-circle"></i> Articles management feature coming soon...
+                    </p>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+{% endblock %}