fix: Correct mermaid diagram syntax in WORKFLOW_DIAGRAMS.md

- Fix syntax error on lines 215 and 226 where @{pattern} caused parsing issues
- Wrap pattern strings in quotes to treat them as literal text labels
- Resolves "Parse error on line 21: Expecting 'SQE', 'DOUBLECIRCLEEND'..." error
- Ensures proper rendering of workflow diagrams in GitHub and other mermaid renderers

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

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

WORKFLOW_DIAGRAMS.md

@@ -212,7 +212,7 @@ graph TB
 
         subgraph "Gemini Features"
             ALL_FILES[--all-files Mode]
-            PATTERNS[@{pattern} Mode]
+            PATTERNS["@{pattern} Mode"]
             TEMPLATES[Template Integration]
         end
     end
@@ -223,7 +223,7 @@ graph TB
         CONTEXT_AWARE[Context-Aware Execution]
 
         subgraph "Codex Features"
-            EXPLICIT_PATTERNS[@{pattern} Control]
+            EXPLICIT_PATTERNS["@{pattern} Control"]
             AUTONOMOUS[Full Autonomous Mode]
             TEMPLATE_INTEGRATION[Template Support]
         end