Update app icons, fix sidebar path overflow, and remove terminal URL accumulator

Replace placeholder icons with the Triple-C branded logo at all required
Tauri sizes. Remove the host_path display from sidebar folder listings to
prevent text overflow. Remove the URL accumulator that injected clickable
login URL text into the terminal — the native WebLinksAddon still handles
URLs when the window is wide enough. Add explicit logging on container
removal confirming named volumes are preserved.

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

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

@@ -392,6 +392,10 @@ pub async fn stop_container(container_id: &str) -> Result<(), String> {
 
 pub async fn remove_container(container_id: &str) -> Result<(), String> {
     let docker = get_docker()?;
+    log::info!(
+        "Removing container {} (v=false: named volumes such as claude config are preserved)",
+        container_id
+    );
     docker
         .remove_container(
             container_id,