fix(tui): y copies the whole queued prompt; a finished queue edit refocuses the composer

y copied the truncated display row. Saving or discarding a row edit left focus on
the queue pane, so the next Enter re-opened the edit instead of sending.

crates/codegen/kigi-tui/src/views/queue_pane.rs

@@ -322,6 +322,10 @@ impl ListItem for QueuedPromptEntry {
     fn search_text(&self) -> &str {
         &self.text
     }
+
+    fn copy_text(&self) -> String {
+        self.text.clone()
+    }
 }
 
 use crossterm::event::{KeyCode, KeyEvent, KeyModifiers, MouseEventKind};
@@ -999,6 +1003,13 @@ mod tests {
         QueuedPrompt::plain(id, text, QueueEntryKind::Prompt)
     }
 
+    #[test]
+    fn y_copies_the_full_multiline_prompt_not_the_display_row() {
+        let text = "first line of a long prompt\nsecond line\nthird line";
+        let entry = QueuedPromptEntry::new(&local_prompt(1, text), 1);
+        assert_eq!(ListItem::copy_text(&entry), text);
+    }
+
     #[test]
     fn reset_auto_show_edge_allows_requeue_after_external_hide() {
         let mut pane = QueuePane::new();