Update summary: Global numbering is now the default standard

FEATURE_UPDATE_SUMMARY.md

@@ -11,6 +11,8 @@ Your repository already had a favicon implemented at `app/static/favicon.ico`. T
 ### 2. 🤖 MOC Auto-Generation (NEW)
 Automatic MOC (My Own Creation) set number generation has been added to streamline creating and managing custom LEGO builds.
 
+**Default Behavior**: **GLOBAL NUMBERING** - All users share the same MOC number sequence for system-wide unique IDs.
+
 ## 📦 Files Added
 
 ### Services
@@ -63,15 +65,16 @@ Automatic MOC (My Own Creation) set number generation has been added to streamli
 - **Customizable Prefix**: Default is "MOC" but can be changed
 - **Sequential**: Automatically finds next available number
 - **Conflict-Free**: Validates before assignment
+- **Global by Default**: All users share the same sequence
 
 ### Usage Example
 
 **Frontend (JavaScript)**:
 ```javascript
-// Toggle MOC mode
+// Toggle MOC mode - fetches global MOC number by default
 document.getElementById('is_moc').addEventListener('change', function() {
     if (this.checked) {
-        // Auto-fetch next MOC number
+        // Auto-fetch next GLOBAL MOC number
         fetch('/api/moc/generate')
             .then(response => response.json())
             .then(data => {
@@ -85,9 +88,9 @@ document.getElementById('is_moc').addEventListener('change', function() {
 ```python
 from app.services.moc_generator import MOCNumberGenerator
 
-# Generate next MOC number for current user
+# Generate next GLOBAL MOC number (default)
 moc_number = MOCNumberGenerator.generate_next_number(
-    user_id=current_user.id
+    user_id=None  # None = global numbering
 )
 
 # Create MOC set
@@ -103,19 +106,23 @@ new_set = Set(
 
 ## 🎯 Key Features
 
-### User-Scoped Numbering (Default)
+### Global Numbering (Default - **STANDARD**)
+- All users share the same MOC number sequence
+- Ensures system-wide unique MOC numbers
+- MOC-10000 is unique across the entire system
+- **API**: `user_scoped=false` or omit parameter (default)
+- **Recommended** for single household, organization, or guaranteed unique IDs
+
+### Per-User Numbering (Optional)
 - Each user has their own MOC number sequence
 - User A can have MOC-10000, User B can also have MOC-10000
 - Prevents conflicts between users' custom builds
-
-### Global Numbering (Optional)
-- All users share the same MOC number sequence
-- Ensures system-wide unique MOC numbers
-- Use `user_scoped=false` in API call
+- **API**: `user_scoped=true`
+- Use only if you need isolated numbering per user
 
 ### Validation
 - Checks for existing MOC numbers before assignment
-- Prevents duplicate set numbers
+- Prevents duplicate set numbers (globally or per-user)
 - Validates MOC number format
 
 ## 📊 Database Integration
@@ -147,7 +154,7 @@ No database migration required! The auto-generation feature builds on your exist
    ```
 
 3. **Verify Endpoints**
-   - `GET /api/moc/generate` - Should return `{"success": true, "moc_number": "MOC-10000"}`
+   - `GET /api/moc/generate` - Should return `{"success": true, "moc_number": "MOC-10000", "user_scoped": false}`
    - Check browser console for any JavaScript errors
 
 ### For Frontend Integration
@@ -172,8 +179,8 @@ For complete details, see:
 ## ✅ Testing Checklist
 
 - [ ] API endpoint accessible: `GET /api/moc/generate`
-- [ ] Returns valid JSON response
-- [ ] Sequential numbering works (MOC-10000, MOC-10001, etc.)
+- [ ] Returns valid JSON response with `user_scoped: false`
+- [ ] Sequential numbering works globally (MOC-10000, MOC-10001, etc.)
 - [ ] Validation endpoint works: `POST /api/moc/validate`
 - [ ] Frontend toggle shows/hides MOC section
 - [ ] MOC number displays correctly in UI
@@ -237,10 +244,11 @@ If you encounter any issues:
 ✅ **Favicon**: Already implemented and working  
 ✅ **MOC Auto-Generation**: Now fully integrated with:
 - Automatic sequential numbering (MOC-10000+)
+- **GLOBAL numbering as default** (system-wide unique IDs)
 - REST API endpoints for generation and validation
 - Service layer for business logic
 - Comprehensive documentation
-- User-scoped or global numbering options
+- Optional per-user numbering if needed
 
 **Total Files Added**: 3  
 **Total Files Modified**: 3