Enhance TUI: add paste event handling, integrate bracketed paste mode, and implement paste support in editing mode.

Fixes #20

crates/owlen-cli/src/main.rs

@@ -11,7 +11,7 @@ use tokio::sync::mpsc;
 use tokio_util::sync::CancellationToken;
 
 use crossterm::{
-    event::{DisableMouseCapture, EnableMouseCapture},
+    event::{DisableMouseCapture, EnableMouseCapture, DisableBracketedPaste, EnableBracketedPaste},
     execute,
     terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
 };
@@ -57,7 +57,7 @@ async fn main() -> Result<()> {
     // Terminal setup
     enable_raw_mode()?;
     let mut stdout = io::stdout();
-    execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
+    execute!(stdout, EnterAlternateScreen, EnableMouseCapture, EnableBracketedPaste)?;
     let backend = CrosstermBackend::new(stdout);
     let mut terminal = Terminal::new(backend)?;
 
@@ -74,7 +74,8 @@ async fn main() -> Result<()> {
     execute!(
         terminal.backend_mut(),
         LeaveAlternateScreen,
-        DisableMouseCapture
+        DisableMouseCapture,
+        DisableBracketedPaste
     )?;
     terminal.show_cursor()?;
 

crates/owlen-tui/src/chat_app.rs

@@ -381,6 +381,24 @@ impl ChatApp {
             Event::Tick => {
                 // Future: update streaming timers
             }
+            Event::Paste(text) => {
+                // Handle paste events - insert text directly without triggering sends
+                if matches!(self.mode, InputMode::Editing) {
+                    // In editing mode, insert the pasted text directly into textarea
+                    let lines: Vec<&str> = text.lines().collect();
+                    for (i, line) in lines.iter().enumerate() {
+                        for ch in line.chars() {
+                            self.textarea.insert_char(ch);
+                        }
+                        // Insert newline between lines (but not after the last line)
+                        if i < lines.len() - 1 {
+                            self.textarea.insert_newline();
+                        }
+                    }
+                    self.sync_textarea_to_buffer();
+                }
+                // Ignore paste events in other modes
+            }
             Event::Key(key) => match self.mode {
                 InputMode::Normal => {
                     // Handle multi-key sequences first

crates/owlen-tui/src/events.rs

@@ -11,6 +11,8 @@ pub enum Event {
     /// Terminal resize event
     #[allow(dead_code)]
     Resize(u16, u16),
+    /// Paste event
+    Paste(String),
     /// Tick event for regular updates
     Tick,
 }
@@ -60,6 +62,9 @@ impl EventHandler {
                             crossterm::event::Event::Resize(width, height) => {
                                 let _ = self.sender.send(Event::Resize(width, height));
                             }
+                            crossterm::event::Event::Paste(text) => {
+                                let _ = self.sender.send(Event::Paste(text));
+                            }
                             _ => {}
                         }
                     }