Update hooks and ignore markdown files in size check

.husky/post-merge

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"
+
+if echo "$changed_files" | grep --quiet -E "package.json|package-lock.json"; then
+  echo "📦 Dependencies changed. Syncing..."
+  
+  # --no-progress stops the terminal spam
+  # --loglevel error ensures we only see the bad stuff
+  if npm install --no-progress --loglevel error; then
+    echo "✅ Node modules are up to date."
+  else
+    echo "❌ npm install failed! Please check your connection or package.json."
+    exit 1
+  fi
+fi