fix: read Linux clipboard images natively and ingest them as paste

GTK/wl-paste/xclip fallbacks plus a paste-event path so ModLens can take over image paste instead of only synthesizing drop.

Co-authored-by: Cursor <cursoragent@cursor.com>

src-tauri/Cargo.toml

@@ -24,9 +24,13 @@ tauri-plugin-opener = "2"
 tauri-plugin-single-instance = "2"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-arboard = "3"
+arboard = { version = "3", features = ["wayland-data-control"] }
 image = { version = "0.25", default-features = false, features = ["png"] }
 open = "5"
 url = "2"
 log = "0.4"
 env_logger = "0.11"
+
+[target.'cfg(target_os = "linux")'.dependencies]
+gdk = "0.18"
+gtk = "0.18"