feat: schéma Drizzle/SQLite (machines, snapshots, executions)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

server/db/client.ts

@@ -0,0 +1,15 @@
+// server/db/client.ts
+import Database from "better-sqlite3";
+import { drizzle } from "drizzle-orm/better-sqlite3";
+import { mkdirSync } from "node:fs";
+import { dirname } from "node:path";
+import { env } from "../env.js";
+import * as schema from "./schema.js";
+
+mkdirSync(dirname(env.dbPath), { recursive: true });
+const sqlite = new Database(env.dbPath);
+sqlite.pragma("journal_mode = WAL");
+sqlite.pragma("foreign_keys = ON");
+
+export const db = drizzle(sqlite, { schema });
+export { schema };