refactored every component thoroughly.

src/cli/args.rs

@@ -0,0 +1,22 @@
+use clap::Parser;
+
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+pub struct Args {
+    #[arg(short, long, help = "Preview changes without moving files")]
+    pub dry_run: bool,
+
+    #[arg(
+        short,
+        long,
+        default_value_t = 5,
+        help = "Maximum concurrent API requests"
+    )]
+    pub max_concurrent: usize,
+
+    #[arg(long, help = "Recursively searches files in subdirectory")]
+    pub recursive: bool,
+
+    #[arg(long, help = "Undo the last file organization")]
+    pub undo: bool,
+}