Parallelize pre-commit checks via lefthook jobs

Independent checks (audit, knip, biome, jscpd, jsinspect, custom
scripts) now run in parallel. Type-dependent checks (oxlint, vitest)
remain sequential after tsc --build via a piped group. Also reorder
pnpm check for fast-fail on cheap checks first.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lefthook.yml

@@ -1,4 +1,29 @@
 pre-commit:
+  parallel: true
   jobs:
-    - name: check
-      run: pnpm check
+    - name: audit
+      run: pnpm audit --audit-level=high
+    - name: knip
+      run: pnpm exec knip
+    - name: biome
+      run: pnpm exec biome check .
+    - name: check-ignores
+      run: node scripts/check-lint-ignores.mjs
+    - name: check-classnames
+      run: node scripts/check-cn-classnames.mjs
+    - name: check-props
+      run: node scripts/check-component-props.mjs
+    - name: jscpd
+      run: pnpm exec jscpd
+    - name: jsinspect
+      run: pnpm jsinspect
+    - name: typecheck-oxlint-test
+      group:
+        piped: true
+        jobs:
+          - name: typecheck
+            run: pnpm exec tsc --build
+          - name: oxlint
+            run: pnpm oxlint
+          - name: test
+            run: pnpm test