- Remove unused filetypes.rs and walk.rs modules

- Introduce `index.rs` for file indexing using SQLite
- Expand configuration options in `config.rs`, including `excluded_files`
- Update dependencies in `Cargo.toml` to include SQLite, hashing, and regex libraries

src/utils/mod.rs

@@ -2,5 +2,5 @@ pub mod project;
 pub mod config;
 
 // Re-export commonly used functions for convenience
-pub use project::{get_project_info, sanitize_project_name};
+pub use project::{get_project_info};
 pub use config::Config;