Add image paste support for xterm.js terminal

Intercept clipboard paste events containing images in the terminal,
upload them into the Docker container via bollard's tar upload API,
and inject the resulting file path into terminal stdin so Claude Code
can reference the image.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/src-tauri/src/commands/terminal_commands.rs

@@ -72,3 +72,23 @@ pub async fn close_terminal_session(
     state.exec_manager.close_session(&session_id).await;
     Ok(())
 }
+
+#[tauri::command]
+pub async fn paste_image_to_terminal(
+    session_id: String,
+    image_data: Vec<u8>,
+    state: State<'_, AppState>,
+) -> Result<String, String> {
+    let container_id = state.exec_manager.get_container_id(&session_id).await?;
+
+    let timestamp = std::time::SystemTime::now()
+        .duration_since(std::time::UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_millis();
+    let file_name = format!("clipboard_{}.png", timestamp);
+
+    state
+        .exec_manager
+        .write_file_to_container(&container_id, &file_name, &image_data)
+        .await
+}

app/src-tauri/src/docker/exec.rs

@@ -1,3 +1,4 @@
+use bollard::container::UploadToContainerOptions;
 use bollard::exec::{CreateExecOptions, ResizeExecOptions, StartExecResults};
 use futures_util::StreamExt;
 use std::collections::HashMap;
@@ -212,4 +213,51 @@ impl ExecSessionManager {
             session.shutdown();
         }
     }
+
+    pub async fn get_container_id(&self, session_id: &str) -> Result<String, String> {
+        let sessions = self.sessions.lock().await;
+        let session = sessions
+            .get(session_id)
+            .ok_or_else(|| format!("Session {} not found", session_id))?;
+        Ok(session.container_id.clone())
+    }
+
+    pub async fn write_file_to_container(
+        &self,
+        container_id: &str,
+        file_name: &str,
+        data: &[u8],
+    ) -> Result<String, String> {
+        let docker = get_docker()?;
+
+        // Build a tar archive in memory containing the file
+        let mut tar_buf = Vec::new();
+        {
+            let mut builder = tar::Builder::new(&mut tar_buf);
+            let mut header = tar::Header::new_gnu();
+            header.set_size(data.len() as u64);
+            header.set_mode(0o644);
+            header.set_cksum();
+            builder
+                .append_data(&mut header, file_name, data)
+                .map_err(|e| format!("Failed to create tar entry: {}", e))?;
+            builder
+                .finish()
+                .map_err(|e| format!("Failed to finalize tar: {}", e))?;
+        }
+
+        docker
+            .upload_to_container(
+                container_id,
+                Some(UploadToContainerOptions {
+                    path: "/tmp".to_string(),
+                    ..Default::default()
+                }),
+                tar_buf.into(),
+            )
+            .await
+            .map_err(|e| format!("Failed to upload file to container: {}", e))?;
+
+        Ok(format!("/tmp/{}", file_name))
+    }
 }

app/src-tauri/src/lib.rs

@@ -90,6 +90,7 @@ pub fn run() {
             commands::terminal_commands::terminal_input,
             commands::terminal_commands::terminal_resize,
             commands::terminal_commands::close_terminal_session,
+            commands::terminal_commands::paste_image_to_terminal,
             // Updates
             commands::update_commands::get_app_version,
             commands::update_commands::check_for_updates,