Initial commit: GPT CLI (Rust)

- Complete Rust implementation of GPT CLI
- Support for OpenAI and Anthropic models
- Session persistence and management
- Web search integration via Responses API
- Interactive commands and model switching
- Comprehensive error handling and logging

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

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

.gitignore

@@ -0,0 +1,44 @@
+# Rust build artifacts
+/target/
+**/*.rs.bk
+*.pdb
+
+# Cargo lock file (include for applications, exclude for libraries)
+# Cargo.lock
+
+# IDE files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Environment files
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# Session storage (for this CLI app specifically)
+.chat_cli_sessions/
+
+# Log files
+*.log
+
+# Temporary files
+*.tmp
+*.temp
+
+# Backup files
+*.bak
+*.backup