chore: add .gitignore

Exclude from version control:
- Hugo build artifacts (public/, resources/, .hugo_build.lock)
- HANDOFF.md (internal documentation)
- IDE and OS files (.vscode, .idea, .DS_Store, etc.)
- Dependencies (node_modules, package-lock.json, yarn.lock)

Co-Authored-By: Claude Haiku 4.5 <redacted>

diff --git a/.gitignore b/.gitignore
new file mode 100644 (file)
index 0000000..50de58a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,23 @@
+# Hugo
+/public/
+/resources/
+.hugo_build.lock
+
+# Documentation
+HANDOFF.md
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Dependencies
+node_modules/
+package-lock.json
+yarn.lock