Add project management pages

templates/edit_qr_code.html

@@ -535,6 +535,30 @@
                   >
                 </div>
               </div>
+
+              <div class="form-group">
+                <label for="project_id">
+                  <i class="fas fa-folder"></i>
+                  Project (Optional)
+                </label>
+                <select id="project_id" name="project_id" class="form-select">
+                  <option value="">No project assigned</option>
+                  {% for project in projects %}
+                  <option value="{{ project.id }}" 
+                          {% if qr_code.project_id == project.id %}selected{% endif %}>
+                    {{ project.name }} ({{ project.qr_count }} QR codes)
+                  </option>
+                  {% endfor %}
+                </select>
+                <small class="form-help">
+                  <i class="fas fa-info-circle"></i>
+                  {% if qr_code.project %}
+                    Currently assigned to: <strong>{{ qr_code.project.name }}</strong>
+                  {% else %}
+                    This QR code is not assigned to any project
+                  {% endif %}
+                </small>
+              </div>
             </div>
 
             <!-- Location Details Section -->