feat(db): drizzle schema (settings, sessions) + boot migrations

server/drizzle.config.ts

@@ -0,0 +1,7 @@
+import { defineConfig } from "drizzle-kit";
+
+export default defineConfig({
+  dialect: "sqlite",
+  schema: "./src/db/schema.ts",
+  out: "./drizzle",
+});