Decouple core Yaak logic from Tauri (#354)

crates/yaak-git/src/commit.rs

@@ -0,0 +1,20 @@
+use crate::binary::new_binary_command;
+use crate::error::Error::GenericError;
+use log::info;
+use std::path::Path;
+
+pub fn git_commit(dir: &Path, message: &str) -> crate::error::Result<()> {
+    let out = new_binary_command(dir)?.args(["commit", "--message", message]).output()?;
+
+    let stdout = String::from_utf8_lossy(&out.stdout);
+    let stderr = String::from_utf8_lossy(&out.stderr);
+    let combined = stdout + stderr;
+
+    if !out.status.success() {
+        return Err(GenericError(format!("Failed to commit: {}", combined)));
+    }
+
+    info!("Committed to {dir:?}");
+
+    Ok(())
+}