doc changes and reference folder

docs/modules/config_games.md

@@ -53,10 +53,33 @@ Game XML definitions, CLI parameter generation, mod definitions, and custom fiel
 
 ## Missing Functionality
 
-- first-class workshop/content capability declarations
 - first-class scheduler capability declarations
 - richer docs metadata
 
+## Workshop Capability Declarations
+
+The XML schema now supports a first-class `workshop_support` block for Steam Workshop / Server Content Manager metadata. This is the only canonical XML format for Workshop-enabled game configs.
+
+Key fields:
+
+- `enabled`
+- `provider`
+- `steam_app_id`
+- `workshop_app_id`
+- `download_method`
+- `install_strategy`
+- `install_path`
+- `startup_param_format`
+- `mod_separator`
+- `mod_prefix`
+- `copy_keys`
+
+Validate changes with:
+
+```bash
+php Panel/modules/config_games/tests/validate_server_configs.php
+```
+
 ## Suggested Future Improvements
 
 - extend XML capability model
@@ -66,4 +89,3 @@ Game XML definitions, CLI parameter generation, mod definitions, and custom fiel
 ## Recommendation
 
 - Keep / Improve
-