feat: add annotation types management system

- Created annotation_types table with name, display_name, color, category, icon
- Implemented CRUD API endpoints for annotation types management
- Built annotation types management UI page at /annotation-types
- Updated Toolbox component to dynamically load and display annotation types
- Updated CandleChart component to use dynamic annotation types for markers
- Added seed functionality for default types (break_up, break_down, line)
- Cleaned up duplicate migration files

src/lib/db/schema.ts

@@ -9,6 +9,17 @@ export const candles = sqliteTable('candles', {
   close: real('close').notNull(),
 });
 
+export const annotationTypes = sqliteTable('annotation_types', {
+  id: integer('id').primaryKey({ autoIncrement: true }),
+  name: text('name').notNull().unique(), // internal name (e.g., 'break_up')
+  display_name: text('display_name').notNull(), // display name (e.g., 'Break Up')
+  color: text('color').notNull(), // hex color code
+  category: text('category').notNull(), // 'marker' or 'line'
+  icon: text('icon'), // icon name or symbol
+  is_active: integer('is_active').notNull().default(1), // 1 = active, 0 = inactive
+  created_at: integer('created_at').notNull(),
+});
+
 export const annotations = sqliteTable('annotations', {
   id: integer('id').primaryKey({ autoIncrement: true }),
   timestamp: integer('timestamp').notNull(),

src/lib/db/seed-annotation-types.ts

@@ -0,0 +1,46 @@
+import { db } from './index';
+import { annotationTypes } from './schema';
+
+export async function seedAnnotationTypes() {
+  const now = Math.floor(Date.now() / 1000);
+
+  const defaultTypes = [
+    {
+      name: 'break_up',
+      display_name: 'Break Up',
+      color: '#10b981',
+      category: 'marker',
+      icon: 'arrowUp',
+      is_active: 1,
+      created_at: now,
+    },
+    {
+      name: 'break_down',
+      display_name: 'Break Down',
+      color: '#ef4444',
+      category: 'marker',
+      icon: 'arrowDown',
+      is_active: 1,
+      created_at: now,
+    },
+    {
+      name: 'line',
+      display_name: 'Line',
+      color: '#3b82f6',
+      category: 'line',
+      icon: 'line',
+      is_active: 1,
+      created_at: now,
+    },
+  ];
+
+  // Check if types already exist
+  const existing = await db.select().from(annotationTypes);
+  
+  if (existing.length === 0) {
+    await db.insert(annotationTypes).values(defaultTypes);
+    console.log('Seeded default annotation types');
+  } else {
+    console.log('Annotation types already exist, skipping seed');
+  }
+}