add shadcn-svelte, add custom titlebar

src-tauri/Cargo.toml

@@ -23,4 +23,9 @@ tauri-plugin-shell = "2"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 tauri-plugin-sql = "2.2.0"
+tauri-plugin-dialog = "2"
+tauri-plugin-fs = "2"
+
+[target.'cfg(not(any(target_os = "android", target_os = "ios")))'.dependencies]
+tauri-plugin-single-instance = "2"