feat(20-01): add tags table, tag service/route, register global-items route

- Create tags table in schema with id, name (unique), createdAt
- Generate migration for tags table
- Create tag.service.ts with getAllTags (id+name, alphabetical order)
- Create tags.ts route with GET / handler
- Register /api/global-items and /api/tags routes in index.ts
- Add auth skip for GET /api/tags and GET /api/global-items

src/server/routes/tags.ts

@@ -0,0 +1,14 @@
+import { Hono } from "hono";
+import { getAllTags } from "../services/tag.service.ts";
+
+type Env = { Variables: { db?: any } };
+
+const app = new Hono<Env>();
+
+app.get("/", async (c) => {
+	const db = c.get("db");
+	const allTags = await getAllTags(db);
+	return c.json(allTags);
+});
+
+export { app as tagRoutes };