feat(terminal): handle OSC 52 clipboard requests

src/tui/terminal_view.zig

@@ -206,6 +206,29 @@ pub fn render(self: *Self, theme: *const Widget.Theme) bool {
                 self.vt.title.clearRetainingCapacity();
                 self.vt.title.appendSlice(self.allocator, t) catch {};
             },
+            .osc_copy => |text| {
+                // Terminal app wrote to clipboard via OSC 52.
+                // Add to flow clipboard history and forward to system clipboard.
+                const owned = tui.clipboard_allocator().dupe(u8, text) catch break;
+                tui.clipboard_clear_all();
+                tui.clipboard_start_group();
+                tui.clipboard_add_chunk(owned);
+                tui.clipboard_send_to_system() catch {};
+            },
+            .osc_paste_request => {
+                // Terminal app requested clipboard contents via OSC 52.
+                // Assemble from flow clipboard history and respond.
+                if (tui.clipboard_get_history()) |history| {
+                    var buf: std.Io.Writer.Allocating = .init(self.allocator);
+                    defer buf.deinit();
+                    var first = true;
+                    for (history) |chunk| {
+                        if (first) first = false else buf.writer.writeByte('\n') catch break;
+                        buf.writer.writeAll(chunk.text) catch break;
+                    }
+                    self.vt.vt.respondOsc52Paste(buf.written());
+                }
+            },
         }
     }