most done.

src/constants.rs

@@ -0,0 +1,22 @@
+pub const DEFAULT_BUFFER_SIZE: usize = 4 * 1024 * 1024;
+pub const HEAD_115_BYTES: usize = 128 * 1024;
+pub const HEAD_BAIDU_BYTES: usize = 256 * 1024;
+pub const META_VERSION: &str = "2025-11-21";
+
+pub const SKIP_DIR_NAMES: &[&str] = &[
+    "@Recently-Snapshot",
+    "@Recycle",
+    ".@__thumb",
+    "@Transcode",
+    "meta",
+    "$RECYCLE.BIN",
+];
+
+pub const SKIP_FILE_NAMES: &[&str] = &[
+    ".DS_Store",
+    "licsber-bak.json",
+    "meta.json",
+    "meta-old.json",
+    "Thumbs.db",
+    "desktop.ini",
+];