many many fixes

scripts/install-hooks.mjs

@@ -0,0 +1,15 @@
+// Points git at the repo's .githooks directory. Runs on `npm install`
+// (the "prepare" script). Never fails, so installs work without git
+// (e.g. CI / Nixpacks builds).
+import { execSync } from 'node:child_process';
+import fs from 'node:fs';
+
+try {
+  if (!fs.existsSync('.git')) process.exit(0);
+  execSync('git config core.hooksPath .githooks', { stdio: 'ignore' });
+  // Make sure the hook is executable on macOS/Linux
+  try { fs.chmodSync('.githooks/pre-commit', 0o755); } catch {}
+  console.log('Git hooks installed (.githooks)');
+} catch {
+  // git not available: skip silently
+}