Implement local SQLite backend and reactive UI

scripts/rebuild-better-sqlite3.mjs

@@ -0,0 +1,31 @@
+import { spawnSync } from "node:child_process";
+import { rmSync } from "node:fs";
+import { dirname } from "node:path";
+import { createRequire } from "node:module";
+
+const target = process.argv[2];
+
+if (target !== "node" && target !== "electron") {
+  console.error("Usage: node scripts/rebuild-better-sqlite3.mjs <node|electron>");
+  process.exit(1);
+}
+
+if (target === "electron") {
+  const result = spawnSync("pnpm", ["exec", "electron-rebuild", "-f", "-w", "better-sqlite3"], {
+    stdio: "inherit",
+  });
+  process.exit(result.status ?? 1);
+}
+
+const requireFromShared = createRequire(new URL("../packages/shared/package.json", import.meta.url));
+const packageJsonPath = requireFromShared.resolve("better-sqlite3/package.json");
+const packageDir = dirname(packageJsonPath);
+
+rmSync(new URL("build", `file://${packageDir}/`), { recursive: true, force: true });
+
+const result = spawnSync("pnpm", ["run", "install"], {
+  cwd: packageDir,
+  stdio: "inherit",
+});
+
+process.exit(result.status ?? 1);