feat: implement version bumping script and pre-push hook

scripts/pre-push

@@ -0,0 +1,29 @@
+#!/usr/bin/env sh
+# Git pre-push hook — automatically bumps the version before pushing.
+# Installed by: npm run prepare  (scripts/install-hooks.js)
+#
+# Prompts for patch / minor / major (default: patch), updates:
+#   - public/versioning.js
+#   - package.json
+#   - src/index.html  (cache-busting ?v= hashes for changed modules)
+# then commits those changes so they are included in the push.
+
+set -e
+
+REPO_ROOT="$(git rev-parse --show-toplevel)"
+
+echo ""
+node "$REPO_ROOT/scripts/bump-version.js"
+
+# Stage files that may have been modified by the bump
+git add \
+  "$REPO_ROOT/public/versioning.js" \
+  "$REPO_ROOT/package.json" \
+  "$REPO_ROOT/src/index.html" 2>/dev/null || true
+
+# Only commit if there are staged changes from the bump
+if ! git diff --cached --quiet; then
+  NEW_VERSION=$(node -e "const f=require('fs');const m=f.readFileSync('$REPO_ROOT/public/versioning.js','utf8').match(/const VERSION = \"([\d.]+)\"/);console.log(m[1])")
+  git commit -m "chore: bump version to $NEW_VERSION"
+  echo "[pre-push] Committed version bump → $NEW_VERSION"
+fi