Initial commit: Clean DSS implementation

Migrated from design-system-swarm with fresh git history.
Old project history preserved in /home/overbits/apps/design-system-swarm

Core components:
- MCP Server (Python FastAPI with mcp 1.23.1)
- Claude Plugin (agents, commands, skills, strategies, hooks, core)
- DSS Backend (dss-mvp1 - token translation, Figma sync)
- Admin UI (Node.js/React)
- Server (Node.js/Express)
- Storybook integration (dss-mvp1/.storybook)

Self-contained configuration:
- All paths relative or use DSS_BASE_PATH=/home/overbits/dss
- PYTHONPATH configured for dss-mvp1 and dss-claude-plugin
- .env file with all configuration
- Claude plugin uses ${CLAUDE_PLUGIN_ROOT} for portability

Migration completed: $(date)
🤖 Clean migration with full functionality preserved

server/src/models/AIChat.js

@@ -0,0 +1,99 @@
+import { DataTypes } from 'sequelize';
+import sequelize from '../config/database.js';
+
+const AIChat = sequelize.define('AIChat', {
+  id: {
+    type: DataTypes.UUID,
+    defaultValue: DataTypes.UUIDV4,
+    primaryKey: true
+  },
+  projectId: {
+    type: DataTypes.UUID,
+    allowNull: true,
+    references: {
+      model: 'projects',
+      key: 'id'
+    }
+  },
+  userId: {
+    type: DataTypes.UUID,
+    allowNull: false,
+    references: {
+      model: 'users',
+      key: 'id'
+    }
+  },
+  sessionId: {
+    type: DataTypes.UUID,
+    defaultValue: DataTypes.UUIDV4,
+    index: true
+  },
+  messageType: {
+    type: DataTypes.ENUM('claude-query', 'ai-query', 'navigation-gen', 'token-save'),
+    allowNull: false
+  },
+  status: {
+    type: DataTypes.ENUM('pending', 'processing', 'completed', 'failed'),
+    defaultValue: 'pending',
+    index: true
+  },
+  userMessage: {
+    type: DataTypes.TEXT,
+    allowNull: false
+  },
+  aiResponse: {
+    type: DataTypes.TEXT,
+    allowNull: true
+  },
+  generatedCode: {
+    type: DataTypes.TEXT,
+    allowNull: true
+  },
+  navigationStructure: {
+    type: DataTypes.JSON,
+    allowNull: true
+  },
+  tokens: {
+    type: DataTypes.JSON,
+    allowNull: true
+  },
+  inputTokens: {
+    type: DataTypes.INTEGER,
+    defaultValue: 0
+  },
+  outputTokens: {
+    type: DataTypes.INTEGER,
+    defaultValue: 0
+  },
+  model: {
+    type: DataTypes.STRING,
+    defaultValue: 'mock-ai-v1'
+  },
+  error: {
+    type: DataTypes.TEXT,
+    allowNull: true
+  },
+  metadata: {
+    type: DataTypes.JSON,
+    defaultValue: {}
+  },
+  startedAt: {
+    type: DataTypes.DATE,
+    allowNull: true
+  },
+  completedAt: {
+    type: DataTypes.DATE,
+    allowNull: true
+  }
+}, {
+  tableName: 'ai_chats',
+  timestamps: true,
+  indexes: [
+    { fields: ['userId', 'createdAt'] },
+    { fields: ['projectId', 'status'] },
+    { fields: ['sessionId'] },
+    { fields: ['status'] }
+  ]
+});
+
+export default AIChat;