Add web TypeScript check to Lefthook pre-commit

The pre-commit hook was only running tsc for the root project.
Web TypeScript errors could slip through to CI. Now runs
cd web && tsc -b when web/**/*.{ts,tsx} files are staged.

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

Author: Chris Shellenbarger

lefthook.yml

@@ -7,3 +7,6 @@ pre-commit:
       stage_fixed: true
     typecheck:
       run: npx tsc --noEmit
+    typecheck-web:
+      glob: "web/**/*.{ts,tsx}"
+      run: cd web && npx tsc -b