feat: 添加 AI 分类功能，支持交易自动分类与标签生成

src/lib/sqlite.js

@@ -1,4 +1,4 @@
-import { Capacitor } from '@capacitor/core'
+import { Capacitor } from '@capacitor/core'
 import { CapacitorSQLite, SQLiteConnection } from '@capacitor-community/sqlite'
 import { defineCustomElements as defineJeep } from 'jeep-sqlite/loader'
 
@@ -12,9 +12,35 @@ const TRANSACTION_TABLE_SQL = `
     category TEXT DEFAULT 'Uncategorized',
     date TEXT NOT NULL,
     note TEXT,
-    sync_status INTEGER DEFAULT 0
+    sync_status INTEGER DEFAULT 0,
+    ai_category TEXT,
+    ai_tags TEXT,
+    ai_confidence REAL,
+    ai_reason TEXT,
+    ai_status TEXT DEFAULT 'idle',
+    ai_model TEXT,
+    ai_normalized_merchant TEXT
   );
 `
+const MERCHANT_PROFILE_TABLE_SQL = `
+  CREATE TABLE IF NOT EXISTS merchant_profiles (
+    merchant_key TEXT PRIMARY KEY NOT NULL,
+    normalized_merchant TEXT NOT NULL,
+    category TEXT,
+    tags TEXT,
+    hit_count INTEGER DEFAULT 0,
+    updated_at TEXT NOT NULL
+  );
+`
+const TRANSACTION_REQUIRED_COLUMNS = {
+  ai_category: 'TEXT',
+  ai_tags: 'TEXT',
+  ai_confidence: 'REAL',
+  ai_reason: 'TEXT',
+  ai_status: "TEXT DEFAULT 'idle'",
+  ai_model: 'TEXT',
+  ai_normalized_merchant: 'TEXT',
+}
 
 let sqliteConnection
 let db
@@ -37,7 +63,7 @@ const ensureStoreReady = async (jeepEl, retries = 5) => {
     }
     await waitFor(200 * (attempt + 1))
   }
-  throw new Error('jeep-sqlite IndexedDB store 未初始化成功')
+  throw new Error('jeep-sqlite IndexedDB store failed to initialize')
 }
 
 const ensureJeepElement = async () => {
@@ -66,6 +92,17 @@ const ensureJeepElement = async () => {
   await CapacitorSQLite.initWebStore()
 }
 
+const ensureTableColumns = async (tableName, requiredColumns) => {
+  const result = await db.query(`PRAGMA table_info(${tableName});`)
+  const existingColumns = new Set((result?.values || []).map((row) => row.name))
+
+  for (const [columnName, definition] of Object.entries(requiredColumns)) {
+    if (!existingColumns.has(columnName)) {
+      await db.execute(`ALTER TABLE ${tableName} ADD COLUMN ${columnName} ${definition};`)
+    }
+  }
+}
+
 const prepareConnection = async () => {
   if (!sqliteConnection) {
     sqliteConnection = new SQLiteConnection(CapacitorSQLite)
@@ -89,6 +126,8 @@ const prepareConnection = async () => {
 
   await db.open()
   await db.execute(TRANSACTION_TABLE_SQL)
+  await db.execute(MERCHANT_PROFILE_TABLE_SQL)
+  await ensureTableColumns('transactions', TRANSACTION_REQUIRED_COLUMNS)
   initialized = true
 }
 
@@ -112,7 +151,7 @@ export const saveDbToStore = async () => {
   try {
     await sqliteConnection.saveToStore(DB_NAME)
   } catch (error) {
-    console.warn('[sqlite] saveToStore 执行失败，数据将保留在内存中', error)
+    console.warn('[sqlite] saveToStore failed, data remains in memory until next sync', error)
   }
 }