feat: Tambah write_osc52 dan salin ke clipboard di mode single-process

src/main.rs

@@ -627,6 +627,21 @@ fn run_loop(
     result
 }
 
+/// Write text to the system clipboard via an OSC52 terminal escape sequence.
+///
+/// Flow: base64-encode `text` -> wrap in `\x1b]52;c;<b64>\x07` -> write and
+/// flush to `stdout`.
+///
+/// Why: OSC52 asks the terminal emulator itself to set the clipboard, so no
+/// OS-level clipboard library (X11/Wayland/win32) is needed. Terminals that
+/// don't support it silently ignore the sequence.
+fn write_osc52(stdout: &mut impl Write, text: &str) -> io::Result<()> {
+    use base64::Engine as _;
+    let b64 = base64::engine::general_purpose::STANDARD.encode(text);
+    write!(stdout, "\x1b]52;c;{b64}\x07")?;
+    stdout.flush()
+}
+
 /// The core single-process render/input loop.
 ///
 /// Flow: until `state.quit` → drain expired toasts → draw the frame →
@@ -665,6 +680,13 @@ fn run_loop_inner(
                         for action in actions {
                             apply_action(state, action);
                         }
+                        if let Some(text) = state.misc.pending_clipboard_copy.take() {
+                            let _ = write_osc52(&mut io::stdout(), &text);
+                            state.push_toast(app::state::types::Toast::new(
+                                app::state::types::ToastKind::Success,
+                                "Copied to clipboard".to_string(),
+                            ));
+                        }
                     }
                 }
                 Event::Paste(text) => {
@@ -699,3 +721,18 @@ fn run_loop_inner(
     terminal.clear()?;
     Ok(())
 }
+
+#[cfg(test)]
+mod tests {
+    use super::write_osc52;
+
+    #[test]
+    fn write_osc52_formats_the_escape_sequence() {
+        let mut buf: Vec<u8> = Vec::new();
+        write_osc52(&mut buf, "hello").unwrap();
+        use base64::Engine as _;
+        let b64 = base64::engine::general_purpose::STANDARD.encode("hello");
+        let expected = format!("\x1b]52;c;{b64}\x07");
+        assert_eq!(String::from_utf8(buf).unwrap(), expected);
+    }
+}