feat: 新增记账系统（收支记录、报销跟踪、月度汇总）

intern-log/src/db/schema.ts

@@ -66,6 +66,18 @@ export interface Credential {
   updated_at: string
 }
 
+export interface Transaction {
+  id?: number
+  type: string            // income | expense
+  category: string
+  amount: number          // 单位：分
+  date: string            // YYYY-MM-DD
+  note: string
+  reimbursable: number    // 支出是否需要报销
+  reimbursed: number      // 是否已报销
+  created_at: string
+}
+
 export class WorklogDB extends Dexie {
   project!: Table<Project, number>
   work_log!: Table<WorkLog, number>
@@ -75,6 +87,7 @@ export class WorklogDB extends Dexie {
   setting!: Table<{ key: string; value: string }, string>
   memo!: Table<Memo, number>
   credential!: Table<Credential, number>
+  transaction!: Table<Transaction, number>
 
   constructor(dbName = 'intern_worklog') {
     super(dbName)
@@ -90,6 +103,9 @@ export class WorklogDB extends Dexie {
       memo: '++id, updated_at',
       credential: '++id, system, updated_at'
     })
+    this.version(3).stores({
+      transaction: '++id, date, type, category'
+    })
   }
 }
 
@@ -105,7 +121,10 @@ export function unbindDatabase(): void {
   db = undefined
 }
 
-export const SCHEMA_VERSION = 2
+export const SCHEMA_VERSION = 3
+
+export const EXPENSE_CATEGORIES: string[] = ['餐饮', '交通', '住房', '通讯', '学习', '娱乐', '其他']
+export const INCOME_CATEGORIES: string[] = ['工资', '报销', '其他']
 
 export const DEFAULT_LOCATIONS: string[] = ['公司', '客户现场', '出差', '居家办公']