feat: Add style-extract and ui-generate commands for design workflow

- Implemented style-extract command to extract design styles from reference images using Gemini Vision and Codex. - Added execution protocol detailing session validation, image analysis, and structured token generation. - Introduced ui-generate command to create UI prototypes based on consolidated design tokens and synthesis specifications. - Defined comprehensive execution steps for loading design systems, generating HTML/CSS prototypes, and ensuring accessibility compliance. - Established a design-tokens-schema for consistent design token definitions across workflows, emphasizing OKLCH color format and semantic naming.
2026-02-13 02:41:50 +08:00 · 2025-10-05 23:48:11 +08:00
parent ea86d5be4f
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--- a/.claude/workflows/design-tokens-schema.md
+++ b/.claude/workflows/design-tokens-schema.md
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+---
+name: design-tokens-schema
+description: Design tokens JSON schema specification for UI design workflow
+type: specification
+---
+
+# Design Tokens Schema Specification
+
+## Overview
+Standardized JSON schema for design tokens used in `/workflow:design/*` commands. Ensures consistency across style extraction, consolidation, and UI generation phases.
+
+## Core Principles
+
+1. **OKLCH Color Format**: All colors use OKLCH color space for perceptual uniformity
+2. **Semantic Naming**: User-centric token names (brand-primary, surface-elevated, not color-1, bg-2)
+3. **rem-Based Sizing**: All spacing and typography use rem units for scalability
+4. **Comprehensive Coverage**: Complete token set for production-ready design systems
+5. **Accessibility First**: WCAG AA compliance validated and documented
+
+## Full Schema
+
+```json
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Design Tokens",
+  "description": "Design token definitions for UI design workflow",
+  "type": "object",
+  "required": ["colors", "typography", "spacing", "border_radius", "shadow"],
+  "properties": {
+    "meta": {
+      "type": "object",
+      "properties": {
+        "version": {"type": "string", "pattern": "^\\d+\\.\\d+\\.\\d+$"},
+        "generated_at": {"type": "string", "format": "date-time"},
+        "session_id": {"type": "string", "pattern": "^WFS-"},
+        "description": {"type": "string"}
+      }
+    },
+    "colors": {
+      "type": "object",
+      "required": ["brand", "surface", "semantic", "text"],
+      "properties": {
+        "brand": {
+          "type": "object",
+          "description": "Brand identity colors",
+          "required": ["primary", "secondary"],
+          "properties": {
+            "primary": {"$ref": "#/definitions/color"},
+            "secondary": {"$ref": "#/definitions/color"},
+            "accent": {"$ref": "#/definitions/color"}
+          }
+        },
+        "surface": {
+          "type": "object",
+          "description": "Surface and background colors",
+          "required": ["background", "elevated"],
+          "properties": {
+            "background": {"$ref": "#/definitions/color"},
+            "elevated": {"$ref": "#/definitions/color"},
+            "sunken": {"$ref": "#/definitions/color"},
+            "overlay": {"$ref": "#/definitions/color"}
+          }
+        },
+        "semantic": {
+          "type": "object",
+          "description": "Semantic state colors",
+          "required": ["success", "warning", "error", "info"],
+          "properties": {
+            "success": {"$ref": "#/definitions/color"},
+            "warning": {"$ref": "#/definitions/color"},
+            "error": {"$ref": "#/definitions/color"},
+            "info": {"$ref": "#/definitions/color"}
+          }
+        },
+        "text": {
+          "type": "object",
+          "description": "Text colors with WCAG AA validated contrast",
+          "required": ["primary", "secondary"],
+          "properties": {
+            "primary": {"$ref": "#/definitions/color"},
+            "secondary": {"$ref": "#/definitions/color"},
+            "tertiary": {"$ref": "#/definitions/color"},
+            "inverse": {"$ref": "#/definitions/color"},
+            "disabled": {"$ref": "#/definitions/color"}
+          }
+        },
+        "border": {
+          "type": "object",
+          "description": "Border and divider colors",
+          "properties": {
+            "subtle": {"$ref": "#/definitions/color"},
+            "default": {"$ref": "#/definitions/color"},
+            "strong": {"$ref": "#/definitions/color"}
+          }
+        }
+      }
+    },
+    "typography": {
+      "type": "object",
+      "required": ["font_family", "font_size", "line_height", "font_weight"],
+      "properties": {
+        "font_family": {
+          "type": "object",
+          "required": ["heading", "body"],
+          "properties": {
+            "heading": {"type": "string"},
+            "body": {"type": "string"},
+            "mono": {"type": "string"}
+          }
+        },
+        "font_size": {
+          "type": "object",
+          "required": ["xs", "sm", "base", "lg", "xl", "2xl", "3xl", "4xl"],
+          "properties": {
+            "xs": {"$ref": "#/definitions/size_rem"},
+            "sm": {"$ref": "#/definitions/size_rem"},
+            "base": {"$ref": "#/definitions/size_rem"},
+            "lg": {"$ref": "#/definitions/size_rem"},
+            "xl": {"$ref": "#/definitions/size_rem"},
+            "2xl": {"$ref": "#/definitions/size_rem"},
+            "3xl": {"$ref": "#/definitions/size_rem"},
+            "4xl": {"$ref": "#/definitions/size_rem"},
+            "5xl": {"$ref": "#/definitions/size_rem"}
+          }
+        },
+        "line_height": {
+          "type": "object",
+          "required": ["tight", "normal", "relaxed"],
+          "properties": {
+            "tight": {"type": "string", "pattern": "^\\d+(\\.\\d+)?$"},
+            "normal": {"type": "string", "pattern": "^\\d+(\\.\\d+)?$"},
+            "relaxed": {"type": "string", "pattern": "^\\d+(\\.\\d+)?$"}
+          }
+        },
+        "font_weight": {
+          "type": "object",
+          "properties": {
+            "light": {"type": "integer", "enum": [300]},
+            "normal": {"type": "integer", "enum": [400]},
+            "medium": {"type": "integer", "enum": [500]},
+            "semibold": {"type": "integer", "enum": [600]},
+            "bold": {"type": "integer", "enum": [700]}
+          }
+        }
+      }
+    },
+    "spacing": {
+      "type": "object",
+      "description": "Spacing scale (rem-based)",
+      "required": ["0", "1", "2", "3", "4", "6", "8"],
+      "patternProperties": {
+        "^\\d+$": {"$ref": "#/definitions/size_rem"}
+      }
+    },
+    "border_radius": {
+      "type": "object",
+      "required": ["none", "sm", "md", "lg", "full"],
+      "properties": {
+        "none": {"type": "string", "const": "0"},
+        "sm": {"$ref": "#/definitions/size_rem"},
+        "md": {"$ref": "#/definitions/size_rem"},
+        "lg": {"$ref": "#/definitions/size_rem"},
+        "xl": {"$ref": "#/definitions/size_rem"},
+        "2xl": {"$ref": "#/definitions/size_rem"},
+        "full": {"type": "string", "const": "9999px"}
+      }
+    },
+    "shadow": {
+      "type": "object",
+      "required": ["sm", "md", "lg"],
+      "properties": {
+        "none": {"type": "string", "const": "none"},
+        "sm": {"type": "string"},
+        "md": {"type": "string"},
+        "lg": {"type": "string"},
+        "xl": {"type": "string"},
+        "2xl": {"type": "string"}
+      }
+    },
+    "breakpoint": {
+      "type": "object",
+      "description": "Responsive breakpoints",
+      "properties": {
+        "sm": {"type": "string", "pattern": "^\\d+px$"},
+        "md": {"type": "string", "pattern": "^\\d+px$"},
+        "lg": {"type": "string", "pattern": "^\\d+px$"},
+        "xl": {"type": "string", "pattern": "^\\d+px$"},
+        "2xl": {"type": "string", "pattern": "^\\d+px$"}
+      }
+    },
+    "accessibility": {
+      "type": "object",
+      "description": "WCAG AA compliance data",
+      "properties": {
+        "contrast_ratios": {
+          "type": "object",
+          "patternProperties": {
+            ".*": {
+              "type": "object",
+              "properties": {
+                "background": {"type": "string"},
+                "foreground": {"type": "string"},
+                "ratio": {"type": "number"},
+                "wcag_aa_pass": {"type": "boolean"},
+                "wcag_aaa_pass": {"type": "boolean"}
+              }
+            }
+          }
+        }
+      }
+    }
+  },
+  "definitions": {
+    "color": {
+      "type": "string",
+      "pattern": "^oklch\\(\\s*\\d+(\\.\\d+)?\\s+\\d+(\\.\\d+)?\\s+\\d+(\\.\\d+)?\\s*(\\/\\s*\\d+(\\.\\d+)?)?\\s*\\)$",
+      "description": "OKLCH color format: oklch(L C H / A)"
+    },
+    "size_rem": {
+      "type": "string",
+      "pattern": "^\\d+(\\.\\d+)?rem$",
+      "description": "rem-based size value"
+    }
+  }
+}
+```
+
+## Example: Complete Design Tokens
+
+```json
+{
+  "meta": {
+    "version": "1.0.0",
+    "generated_at": "2025-10-05T15:30:00Z",
+    "session_id": "WFS-auth-dashboard",
+    "description": "Modern minimalist design system with high contrast"
+  },
+  "colors": {
+    "brand": {
+      "primary": "oklch(0.45 0.20 270 / 1)",
+      "secondary": "oklch(0.60 0.15 200 / 1)",
+      "accent": "oklch(0.65 0.18 30 / 1)"
+    },
+    "surface": {
+      "background": "oklch(0.98 0.01 270 / 1)",
+      "elevated": "oklch(1.00 0.00 0 / 1)",
+      "sunken": "oklch(0.95 0.02 270 / 1)",
+      "overlay": "oklch(0.00 0.00 0 / 0.5)"
+    },
+    "semantic": {
+      "success": "oklch(0.55 0.15 150 / 1)",
+      "warning": "oklch(0.70 0.18 60 / 1)",
+      "error": "oklch(0.50 0.20 20 / 1)",
+      "info": "oklch(0.60 0.15 240 / 1)"
+    },
+    "text": {
+      "primary": "oklch(0.20 0.02 270 / 1)",
+      "secondary": "oklch(0.45 0.02 270 / 1)",
+      "tertiary": "oklch(0.60 0.02 270 / 1)",
+      "inverse": "oklch(0.98 0.01 270 / 1)",
+      "disabled": "oklch(0.70 0.01 270 / 0.5)"
+    },
+    "border": {
+      "subtle": "oklch(0.90 0.01 270 / 1)",
+      "default": "oklch(0.80 0.02 270 / 1)",
+      "strong": "oklch(0.60 0.05 270 / 1)"
+    }
+  },
+  "typography": {
+    "font_family": {
+      "heading": "Inter, system-ui, -apple-system, sans-serif",
+      "body": "Inter, system-ui, -apple-system, sans-serif",
+      "mono": "Fira Code, Consolas, monospace"
+    },
+    "font_size": {
+      "xs": "0.75rem",
+      "sm": "0.875rem",
+      "base": "1rem",
+      "lg": "1.125rem",
+      "xl": "1.25rem",
+      "2xl": "1.5rem",
+      "3xl": "1.875rem",
+      "4xl": "2.25rem",
+      "5xl": "3rem"
+    },
+    "line_height": {
+      "tight": "1.25",
+      "normal": "1.5",
+      "relaxed": "1.75"
+    },
+    "font_weight": {
+      "light": 300,
+      "normal": 400,
+      "medium": 500,
+      "semibold": 600,
+      "bold": 700
+    }
+  },
+  "spacing": {
+    "0": "0",
+    "1": "0.25rem",
+    "2": "0.5rem",
+    "3": "0.75rem",
+    "4": "1rem",
+    "5": "1.25rem",
+    "6": "1.5rem",
+    "8": "2rem",
+    "10": "2.5rem",
+    "12": "3rem",
+    "16": "4rem",
+    "20": "5rem",
+    "24": "6rem"
+  },
+  "border_radius": {
+    "none": "0",
+    "sm": "0.25rem",
+    "md": "0.5rem",
+    "lg": "0.75rem",
+    "xl": "1rem",
+    "2xl": "1.5rem",
+    "full": "9999px"
+  },
+  "shadow": {
+    "none": "none",
+    "sm": "0 1px 2px oklch(0.00 0.00 0 / 0.05)",
+    "md": "0 4px 6px oklch(0.00 0.00 0 / 0.07), 0 2px 4px oklch(0.00 0.00 0 / 0.06)",
+    "lg": "0 10px 15px oklch(0.00 0.00 0 / 0.1), 0 4px 6px oklch(0.00 0.00 0 / 0.05)",
+    "xl": "0 20px 25px oklch(0.00 0.00 0 / 0.15), 0 10px 10px oklch(0.00 0.00 0 / 0.04)",
+    "2xl": "0 25px 50px oklch(0.00 0.00 0 / 0.25)"
+  },
+  "breakpoint": {
+    "sm": "640px",
+    "md": "768px",
+    "lg": "1024px",
+    "xl": "1280px",
+    "2xl": "1536px"
+  },
+  "accessibility": {
+    "contrast_ratios": {
+      "text_primary_on_background": {
+        "background": "oklch(0.98 0.01 270 / 1)",
+        "foreground": "oklch(0.20 0.02 270 / 1)",
+        "ratio": 14.2,
+        "wcag_aa_pass": true,
+        "wcag_aaa_pass": true
+      },
+      "brand_primary_on_background": {
+        "background": "oklch(0.98 0.01 270 / 1)",
+        "foreground": "oklch(0.45 0.20 270 / 1)",
+        "ratio": 6.8,
+        "wcag_aa_pass": true,
+        "wcag_aaa_pass": false
+      }
+    }
+  }
+}
+```
+
+## CSS Custom Properties Generation
+
+Design tokens should be converted to CSS custom properties for use in generated UI:
+
+```css
+:root {
+  /* Brand Colors */
+  --color-brand-primary: oklch(0.45 0.20 270 / 1);
+  --color-brand-secondary: oklch(0.60 0.15 200 / 1);
+  --color-brand-accent: oklch(0.65 0.18 30 / 1);
+
+  /* Surface Colors */
+  --color-surface-background: oklch(0.98 0.01 270 / 1);
+  --color-surface-elevated: oklch(1.00 0.00 0 / 1);
+  --color-surface-sunken: oklch(0.95 0.02 270 / 1);
+
+  /* Semantic Colors */
+  --color-semantic-success: oklch(0.55 0.15 150 / 1);
+  --color-semantic-warning: oklch(0.70 0.18 60 / 1);
+  --color-semantic-error: oklch(0.50 0.20 20 / 1);
+  --color-semantic-info: oklch(0.60 0.15 240 / 1);
+
+  /* Text Colors */
+  --color-text-primary: oklch(0.20 0.02 270 / 1);
+  --color-text-secondary: oklch(0.45 0.02 270 / 1);
+  --color-text-tertiary: oklch(0.60 0.02 270 / 1);
+
+  /* Typography */
+  --font-family-heading: Inter, system-ui, sans-serif;
+  --font-family-body: Inter, system-ui, sans-serif;
+  --font-family-mono: Fira Code, Consolas, monospace;
+
+  --font-size-xs: 0.75rem;
+  --font-size-sm: 0.875rem;
+  --font-size-base: 1rem;
+  --font-size-lg: 1.125rem;
+  --font-size-xl: 1.25rem;
+  --font-size-2xl: 1.5rem;
+  --font-size-3xl: 1.875rem;
+  --font-size-4xl: 2.25rem;
+
+  --line-height-tight: 1.25;
+  --line-height-normal: 1.5;
+  --line-height-relaxed: 1.75;
+
+  /* Spacing */
+  --spacing-0: 0;
+  --spacing-1: 0.25rem;
+  --spacing-2: 0.5rem;
+  --spacing-3: 0.75rem;
+  --spacing-4: 1rem;
+  --spacing-6: 1.5rem;
+  --spacing-8: 2rem;
+  --spacing-12: 3rem;
+  --spacing-16: 4rem;
+
+  /* Border Radius */
+  --border-radius-none: 0;
+  --border-radius-sm: 0.25rem;
+  --border-radius-md: 0.5rem;
+  --border-radius-lg: 0.75rem;
+  --border-radius-xl: 1rem;
+  --border-radius-full: 9999px;
+
+  /* Shadows */
+  --shadow-sm: 0 1px 2px oklch(0.00 0.00 0 / 0.05);
+  --shadow-md: 0 4px 6px oklch(0.00 0.00 0 / 0.07), 0 2px 4px oklch(0.00 0.00 0 / 0.06);
+  --shadow-lg: 0 10px 15px oklch(0.00 0.00 0 / 0.1), 0 4px 6px oklch(0.00 0.00 0 / 0.05);
+}
+```
+
+## Tailwind Configuration Generation
+
+```javascript
+// tailwind.config.js
+module.exports = {
+  theme: {
+    extend: {
+      colors: {
+        brand: {
+          primary: 'oklch(0.45 0.20 270 / <alpha-value>)',
+          secondary: 'oklch(0.60 0.15 200 / <alpha-value>)',
+          accent: 'oklch(0.65 0.18 30 / <alpha-value>)'
+        },
+        surface: {
+          background: 'oklch(0.98 0.01 270 / <alpha-value>)',
+          elevated: 'oklch(1.00 0.00 0 / <alpha-value>)',
+          sunken: 'oklch(0.95 0.02 270 / <alpha-value>)'
+        },
+        semantic: {
+          success: 'oklch(0.55 0.15 150 / <alpha-value>)',
+          warning: 'oklch(0.70 0.18 60 / <alpha-value>)',
+          error: 'oklch(0.50 0.20 20 / <alpha-value>)',
+          info: 'oklch(0.60 0.15 240 / <alpha-value>)'
+        }
+      },
+      fontFamily: {
+        heading: ['Inter', 'system-ui', 'sans-serif'],
+        body: ['Inter', 'system-ui', 'sans-serif'],
+        mono: ['Fira Code', 'Consolas', 'monospace']
+      },
+      fontSize: {
+        'xs': '0.75rem',
+        'sm': '0.875rem',
+        'base': '1rem',
+        'lg': '1.125rem',
+        'xl': '1.25rem',
+        '2xl': '1.5rem',
+        '3xl': '1.875rem',
+        '4xl': '2.25rem'
+      },
+      spacing: {
+        '1': '0.25rem',
+        '2': '0.5rem',
+        '3': '0.75rem',
+        '4': '1rem',
+        '6': '1.5rem',
+        '8': '2rem',
+        '12': '3rem',
+        '16': '4rem'
+      },
+      borderRadius: {
+        'sm': '0.25rem',
+        'md': '0.5rem',
+        'lg': '0.75rem',
+        'xl': '1rem',
+        '2xl': '1.5rem'
+      },
+      boxShadow: {
+        'sm': '0 1px 2px oklch(0.00 0.00 0 / 0.05)',
+        'md': '0 4px 6px oklch(0.00 0.00 0 / 0.07), 0 2px 4px oklch(0.00 0.00 0 / 0.06)',
+        'lg': '0 10px 15px oklch(0.00 0.00 0 / 0.1), 0 4px 6px oklch(0.00 0.00 0 / 0.05)'
+      }
+    }
+  }
+}
+```
+
+## Validation Requirements
+
+### Color Validation
+- All colors MUST use OKLCH format
+- Alpha channel optional (defaults to 1)
+- Lightness: 0-1 (0% to 100%)
+- Chroma: 0-0.4 (typical range, can exceed for vibrant colors)
+- Hue: 0-360 (degrees)
+
+### Accessibility Validation
+- Text on background: minimum 4.5:1 contrast (WCAG AA)
+- Large text (18pt+ or 14pt+ bold): minimum 3:1 contrast
+- UI components: minimum 3:1 contrast
+- Non-text focus indicators: minimum 3:1 contrast
+
+### Consistency Validation
+- Spacing scale maintains consistent ratio (e.g., 1.5x or 2x progression)
+- Typography scale follows modular scale principles
+- Border radius values progress logically
+- Shadow layers increase in offset and blur systematically
+
+## Usage in Commands
+
+### style-extract Output
+Generates initial `design-tokens.json` from visual analysis
+
+### style-consolidate Output
+Finalizes validated `design-tokens.json` with accessibility data
+
+### ui-generate Input
+Reads `design-tokens.json` to generate CSS custom properties
+
+### design-update Integration
+References `design-tokens.json` path in synthesis-specification.md
+
+## Version History
+
+- **1.0.0**: Initial schema with OKLCH colors, semantic naming, WCAG AA validation