Clean up references to deleted scripts and pattern system

- Removed references to validate-references.sh from YAML files
- Removed expand-references.sh from settings.local.json
- Cleaned up @pattern/@flags references from shared files
- Updated documentation to reflect current no-code implementation
- Simplified reference-index.yml to remove @include patterns

This cleanup removes confusion from the abandoned pattern reference
system while maintaining all functionality.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.claude/commands/shared/loading-config.yml

@@ -13,7 +13,7 @@ Global Availability:
   MCP.md: All MCP patterns available automatically
   
 Commands:
-  Trigger: /user:
+  Trigger: /
   Path: .claude/commands/
   Size: ~50 tokens per command
   Cache: Most recent 5 commands
@@ -24,7 +24,7 @@ SharedResources:
   Path: .claude/commands/shared/
   Size: ~150 tokens per YAML
   Examples:
-    - cleanup-patterns.yml→loads w/ /user:cleanup
+    - cleanup-patterns.yml→loads w/ /cleanup
     - git-workflow.yml→loads w/ git ops
     - planning-mode.yml→loads w/ risky commands
 ```
@@ -70,4 +70,4 @@ Adaptive Optimization:
   High Memory: Trigger context compression and cleanup
   Cache Misses: Adjust caching strategy based on usage patterns
   Performance Degradation: Fall back to minimal loading mode
-```
+```