First cut

db/models.js

@@ -0,0 +1,63 @@
+import { Sequelize, DataTypes } from 'sequelize';
+import { fileURLToPath } from 'url';
+import { dirname, join } from 'path';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+export const sequelize = new Sequelize({
+  dialect: 'sqlite',
+  storage: join(__dirname, '../data/jobs.sqlite'),
+  logging: false,
+});
+
+export const Job = sequelize.define('Job', {
+  id: {
+    type: DataTypes.UUID,
+    defaultValue: DataTypes.UUIDV4,
+    primaryKey: true,
+  },
+  prompt: {
+    type: DataTypes.TEXT,
+    allowNull: false,
+  },
+  // Base64 data URL stored for replay; in production use object storage
+  imageDataUrl: {
+    type: DataTypes.TEXT,
+    allowNull: false,
+  },
+  imageMimeType: {
+    type: DataTypes.STRING(64),
+    allowNull: false,
+    defaultValue: 'image/jpeg',
+  },
+  status: {
+    // queued | running | done | error
+    type: DataTypes.STRING(16),
+    allowNull: false,
+    defaultValue: 'queued',
+  },
+  result: {
+    type: DataTypes.TEXT,
+    allowNull: true,
+  },
+  errorMessage: {
+    type: DataTypes.TEXT,
+    allowNull: true,
+  },
+  model: {
+    type: DataTypes.STRING(128),
+    allowNull: false,
+    defaultValue: 'anthropic/claude-sonnet-4.6',
+  },
+  inputTokens: { type: DataTypes.INTEGER, allowNull: true },
+  outputTokens: { type: DataTypes.INTEGER, allowNull: true },
+}, {
+  tableName: 'jobs',
+  timestamps: true,
+});
+
+export async function initDb() {
+  const { mkdirSync } = await import('fs');
+  mkdirSync(join(__dirname, '../data'), { recursive: true });
+  await sequelize.sync();
+}