feat(db): 新增金融資產枚舉與核心資產表 (assets)

src/db/schema.ts

@@ -1,4 +1,4 @@
-import { pgTable, uuid, varchar, timestamp } from "drizzle-orm/pg-core";
+import { pgTable, uuid, varchar, timestamp, pgEnum } from "drizzle-orm/pg-core";
 
 export const users = pgTable("users", {
   id: uuid("id").primaryKey().defaultRandom(),
@@ -8,3 +8,18 @@ export const users = pgTable("users", {
     .defaultNow()
     .notNull(),
 });
+
+export const assetTypeEnum = pgEnum("asset_type_enum", [
+  "STOCK",
+  "CRYPTO",
+  "CASH",
+]);
+
+export const assets = pgTable("assets", {
+  id: uuid("id").primaryKey().defaultRandom(),
+  symbol: varchar("symbol", { length: 20 }).notNull().unique(),
+  type: assetTypeEnum("type").notNull(),
+  baseCurrency: varchar("base_currency", { length: 10 }).notNull(),
+  createdAt: timestamp("created_at", { withTimezone: true, mode: "date" })
+    .defaultNow(),
+});