feat: Optimize all 18 command files using @include reference system

Major streamlining achievement:
- Eliminate 2,733 lines of duplicate content across commands
- Reduce individual command files by ~70% (130-150 → 35-60 lines)
- Leverage existing shared/*.yml reference patterns
- Maintain full Claude Code compliance

Benefits:
• Single source of truth for universal content
• Guaranteed consistency across all commands
• Dramatically reduced maintenance overhead
• Massive token efficiency improvements

Implementation:
- Universal Legend: @include shared/universal-constants.yml#Universal Legend
- Universal Flags: @include shared/flag-inheritance.yml#Universal_Always
- Command patterns: References to appropriate shared/*.yml files
- Template system: Enhanced command-patterns.yml

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

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

.claude/commands/shared/command-patterns.yml

@@ -14,6 +14,31 @@ Command_Header:
   Legend: "@cmd-specific legend gen"
   Purpose: "[Action][Subject] in $ARGUMENTS"
 
+## Optimized Command File Template
+
+```yaml
+# Standard template for all command files using @include references
+Optimized_Command_Template: |
+  @include shared/universal-constants.yml#Universal_Legend
+  
+  ## Command Execution
+  Execute: immediate. --plan→show plan first
+  Legend: Generated based on symbols used in command
+  Purpose: "[Action][Subject] in $ARGUMENTS"
+  
+  [Command-specific description here]
+  
+  @include shared/flag-inheritance.yml#Universal_Always
+  
+  Examples:
+  - `/{command} --flag` - Description
+  - `/{command} --other-flag` - Description
+  - `/{command} --complex-example` - Description
+  
+  [Command-specific content sections]
+  
+  @include shared/universal-constants.yml#Success_Messages
+
 ## UltraCompressed Command Structure
 
 ```yaml