Add gitignore and environment configuration template

- Update .gitignore to exclude sensitive files and helper docs
- Create .env.example with placeholder values for setup
- Ensure .env with secrets remains untracked

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.gitignore

@@ -1,2 +1,10 @@
 *.fxp
-*.bak
+*.bak
+
+# Environment files with secrets
+api/.env
+
+# Helper/temporary files in docs
+docs/PACK_COMENZI.pck
+docs/completeaza-parteneri-roa.prg  
+docs/info-database.sql