refactor: use mem0 as long-memory maneger

packages/db/src/history.ts

@@ -0,0 +1,11 @@
+import { pgTable, timestamp, uuid, jsonb, text } from 'drizzle-orm/pg-core'
+
+export const history = pgTable(
+  'history', 
+  {
+    id: uuid('id').primaryKey().defaultRandom(),
+    messages: jsonb('messages').notNull(),
+    timestamp: timestamp('timestamp').notNull(),
+    user: text('user').notNull(),
+  }
+)

packages/db/src/memory.ts

@@ -1,16 +1,13 @@
-import { pgTable, timestamp, uuid, jsonb, text, vector, index } from 'drizzle-orm/pg-core'
+import { pgTable, text, timestamp, integer } from 'drizzle-orm/pg-core'
+import { sql } from 'drizzle-orm'
 
-export const memory = pgTable(
-  'memory', 
-  {
-    id: uuid('id').primaryKey().defaultRandom(),
-    messages: jsonb('messages').notNull(),
-    timestamp: timestamp('timestamp').notNull(),
-    user: text('user').notNull(),
-    rawContent: text('raw_content').notNull(),
-    embedding: vector('embedding', { dimensions: 1536 }).notNull(),
-  },
-  (table) => [
-    index('embedding_index').using('hnsw', table.embedding.op('vector_cosine_ops')),
-  ]
-)
+export const memory = pgTable('memory', {
+  id: text('id').primaryKey(),
+  memoryId: text('memory_id').notNull(),
+  previousValue: text('previous_value'),
+  newValue: text('new_value'),
+  action: text('action').notNull(),
+  createdAt: timestamp('created_at', { withTimezone: true }).default(sql`timezone('utc', now())`),
+  updatedAt: timestamp('updated_at', { withTimezone: true }),
+  isDeleted: integer('is_deleted').default(0),
+})

packages/db/src/schema.ts

@@ -1 +1,2 @@
+export * from './history'
 export * from './memory'