chore: ignore .vercel/ and .env* (from linking the Vercel project)

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WEMUhEuYVWmWs1PXPByX2p

Author: Programcode

.gitignore

@@ -62,3 +62,5 @@ humanizer.md
 *.info
 !README.md
 !**/README.md
+.vercel
+.env*