Complete: Split documentation into individual category files

- Split categories 5-15 into separate files for better organization
   - Added User, MAG, Enigma, Streams, Channel, Station, Movie, Series, Episode, Server, and Settings APIs
   - Each category now has its own dedicated documentation file
   - Total: 111 endpoints fully documented across 15 categories

docs/categories/12-series-api.md

@@ -0,0 +1,45 @@
+# Series API - TV Series Management
+
+TV series management endpoints.
+
+## 📋 Available Operations
+
+| Action | Method | Description |
+|--------|--------|-------------|
+| `create_series` | POST | Create TV series |
+| `edit_series` | POST | Edit series settings |
+| `delete_series` | POST | Remove series |
+| `get_series` | GET | Get series details |
+
+---
+
+## Quick Example
+
+```bash
+curl -X POST "http://your-server.com/cSbuFLhp/?api_key=API_KEY&action=create_series" \
+  -d "name=Breaking Bad" \
+  -d "category_id=3" \
+  -d "cover=http://example.com/cover.jpg" \
+  -d "plot=A high school chemistry teacher..." \
+  -d "year=2008"
+```
+
+---
+
+## Series Metadata
+
+- `name` - Series title
+- `category_id` - Category assignment
+- `cover` - Cover image URL
+- `plot` - Description
+- `year` - First aired year
+- `cast` - Cast members
+- `director` - Director/Creator
+- `genre` - Series genre
+- `rating` - Rating
+
+---
+
+## 📚 Related: 
+- [GET INFO API - Query Series](02-get-info.md#6-get-all-series)
+- [Episode API](13-episode-api.md)