feat(plugins): add Visual Output headers to all other plugin commands

Add single-line visual headers to 66 command files across 10 plugins:
- clarity-assist (2 commands): 💬
- claude-config-maintainer (5 commands): ⚙️
- cmdb-assistant (11 commands): 🖥️
- code-sentinel (3 commands): 🔒
- contract-validator (5 commands): ✅
- data-platform (10 commands): 📊
- doc-guardian (5 commands): 📝
- git-flow (8 commands): 🔀
- pr-review (7 commands): 🔍
- viz-platform (10 commands): 🎨

Each command now displays a consistent header at execution start:
┌────────────────────────────────────────────────────────────────┐
│  [icon] PLUGIN-NAME · Command Description                       │
└────────────────────────────────────────────────────────────────┘

Addresses #275 (other plugin commands visual output)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plugins/viz-platform/commands/accessibility-check.md

@@ -4,6 +4,18 @@ description: Validate color accessibility for color blind users
 
 # Accessibility Check
 
+## Visual Output
+
+When executing this command, display the plugin header:
+
+```
+┌──────────────────────────────────────────────────────────────────┐
+│  🎨 VIZ-PLATFORM · Accessibility Check                            │
+└──────────────────────────────────────────────────────────────────┘
+```
+
+Then proceed with the accessibility validation.
+
 Validate theme or chart colors for color blind accessibility, checking contrast ratios and suggesting alternatives.
 
 ## Usage

plugins/viz-platform/commands/breakpoints.md

@@ -4,6 +4,18 @@ description: Configure responsive breakpoints for dashboard layouts
 
 # Configure Breakpoints
 
+## Visual Output
+
+When executing this command, display the plugin header:
+
+```
+┌──────────────────────────────────────────────────────────────────┐
+│  🎨 VIZ-PLATFORM · Breakpoints                                    │
+└──────────────────────────────────────────────────────────────────┘
+```
+
+Then proceed with the configuration.
+
 Configure responsive breakpoints for a layout to support mobile-first design across different screen sizes.
 
 ## Usage

plugins/viz-platform/commands/chart-export.md

@@ -4,6 +4,18 @@ description: Export a Plotly chart to PNG, SVG, or PDF format
 
 # Export Chart
 
+## Visual Output
+
+When executing this command, display the plugin header:
+
+```
+┌──────────────────────────────────────────────────────────────────┐
+│  🎨 VIZ-PLATFORM · Chart Export                                   │
+└──────────────────────────────────────────────────────────────────┘
+```
+
+Then proceed with the export.
+
 Export a Plotly chart to static image formats for sharing, embedding, or printing.
 
 ## Usage

plugins/viz-platform/commands/chart.md

@@ -4,6 +4,18 @@ description: Create a Plotly chart with theme integration
 
 # Create Chart
 
+## Visual Output
+
+When executing this command, display the plugin header:
+
+```
+┌──────────────────────────────────────────────────────────────────┐
+│  🎨 VIZ-PLATFORM · Chart Builder                                  │
+└──────────────────────────────────────────────────────────────────┘
+```
+
+Then proceed with the chart creation.
+
 Create a Plotly chart with automatic theme token application.
 
 ## Usage

plugins/viz-platform/commands/component.md

@@ -4,6 +4,18 @@ description: Inspect Dash Mantine Component props and validation
 
 # Inspect Component
 
+## Visual Output
+
+When executing this command, display the plugin header:
+
+```
+┌──────────────────────────────────────────────────────────────────┐
+│  🎨 VIZ-PLATFORM · Component Inspector                            │
+└──────────────────────────────────────────────────────────────────┘
+```
+
+Then proceed with the inspection.
+
 Inspect a Dash Mantine Component's available props, types, and defaults.
 
 ## Usage

plugins/viz-platform/commands/dashboard.md

@@ -4,6 +4,18 @@ description: Create a dashboard layout with the layout-builder agent
 
 # Create Dashboard
 
+## Visual Output
+
+When executing this command, display the plugin header:
+
+```
+┌──────────────────────────────────────────────────────────────────┐
+│  🎨 VIZ-PLATFORM · Dashboard Builder                              │
+└──────────────────────────────────────────────────────────────────┘
+```
+
+Then proceed with the dashboard creation.
+
 Create a dashboard layout structure with filters, grids, and sections.
 
 ## Usage

plugins/viz-platform/commands/initial-setup.md

@@ -4,6 +4,18 @@ description: Interactive setup wizard for viz-platform plugin - configures MCP s
 
 # Viz-Platform Setup Wizard
 
+## Visual Output
+
+When executing this command, display the plugin header:
+
+```
+┌──────────────────────────────────────────────────────────────────┐
+│  🎨 VIZ-PLATFORM · Setup Wizard                                   │
+└──────────────────────────────────────────────────────────────────┘
+```
+
+Then proceed with the setup.
+
 This command sets up the viz-platform plugin with Dash Mantine Components validation and theming.
 
 ## Important Context

plugins/viz-platform/commands/theme-css.md

@@ -4,6 +4,18 @@ description: Export a theme as CSS custom properties
 
 # Export Theme as CSS
 
+## Visual Output
+
+When executing this command, display the plugin header:
+
+```
+┌──────────────────────────────────────────────────────────────────┐
+│  🎨 VIZ-PLATFORM · Theme CSS Export                               │
+└──────────────────────────────────────────────────────────────────┘
+```
+
+Then proceed with the export.
+
 Export a theme's design tokens as CSS custom properties for use outside Dash.
 
 ## Usage

plugins/viz-platform/commands/theme-new.md

@@ -4,6 +4,18 @@ description: Create a new custom theme with design tokens
 
 # Create New Theme
 
+## Visual Output
+
+When executing this command, display the plugin header:
+
+```
+┌──────────────────────────────────────────────────────────────────┐
+│  🎨 VIZ-PLATFORM · New Theme                                      │
+└──────────────────────────────────────────────────────────────────┘
+```
+
+Then proceed with the theme creation.
+
 Create a new custom theme with specified design tokens.
 
 ## Usage

plugins/viz-platform/commands/theme.md

@@ -4,6 +4,18 @@ description: Apply an existing theme to the current context
 
 # Apply Theme
 
+## Visual Output
+
+When executing this command, display the plugin header:
+
+```
+┌──────────────────────────────────────────────────────────────────┐
+│  🎨 VIZ-PLATFORM · Apply Theme                                    │
+└──────────────────────────────────────────────────────────────────┘
+```
+
+Then proceed with the theme activation.
+
 Apply an existing theme to activate its design tokens.
 
 ## Usage