Added foundational modules for core functionalities:

- Introduced `walk.rs` as a parallel directory walker for search operations.
- Implemented basic index handling in `commands/index.rs`.
- Created `utils/config.rs` for configuration management with placeholders for future enhancements.

src/utils/project.rs

@@ -0,0 +1,31 @@
+use std::path::{Path, PathBuf};
+
+pub fn get_project_info(
+    project_path: &Path,
+    config_dir: &Path,
+) -> Result<(String, PathBuf), Box<dyn std::error::Error>> {
+    let project_name = project_path
+        .file_name()
+        .and_then(|name| name.to_str())
+        .ok_or("Unable to determine project name")?;
+
+    let db_name = sanitize_project_name(project_name);
+    let db_path = config_dir.join(format!("{}.sqlite", db_name));
+
+    Ok((project_name.to_string(), db_path))
+}
+
+pub fn sanitize_project_name(name: &str) -> String {
+    name.to_lowercase()
+        .chars()
+        .map(|c| match c {
+            ' ' | '\t' | '\n' | '\r' => '_',
+            c if c.is_alphanumeric() || c == '_' || c == '-' => c,
+            _ => '_'
+        })
+        .collect::<String>()
+        .split('_')
+        .filter(|s| !s.is_empty())
+        .collect::<Vec<_>>()
+        .join("_")
+}