cleanup by just scrolling in the renderer

src/termio/Termio.zig

@@ -641,10 +641,13 @@ pub fn clearScreen(self: *Termio, td: *ThreadData, history: bool) !void {
 }
 
 /// Scroll the viewport
-pub fn scrollViewport(self: *Termio, scroll: terminalpkg.Terminal.ScrollViewport) !void {
+pub fn scrollViewport(
+    self: *Termio,
+    scroll: terminalpkg.Terminal.ScrollViewport,
+) void {
     self.renderer_state.mutex.lock();
     defer self.renderer_state.mutex.unlock();
-    try self.terminal.scrollViewport(scroll);
+    self.terminal.scrollViewport(scroll);
 }
 
 /// Jump the viewport to the prompt.

src/termio/Thread.zig

@@ -321,7 +321,7 @@ fn drainMailbox(
             .resize => |v| self.handleResize(cb, v),
             .size_report => |v| try io.sizeReport(data, v),
             .clear_screen => |v| try io.clearScreen(data, v.history),
-            .scroll_viewport => |v| try io.scrollViewport(v),
+            .scroll_viewport => |v| io.scrollViewport(v),
             .selection_scroll => |v| {
                 if (v) {
                     self.startScrollTimer(cb);

src/termio/stream_handler.zig

@@ -232,7 +232,7 @@ pub const StreamHandler = struct {
             .erase_display_below => self.terminal.eraseDisplay(.below, value),
             .erase_display_above => self.terminal.eraseDisplay(.above, value),
             .erase_display_complete => {
-                try self.terminal.scrollViewport(.{ .bottom = {} });
+                self.terminal.scrollViewport(.{ .bottom = {} });
                 self.terminal.eraseDisplay(.complete, value);
             },
             .erase_display_scrollback => self.terminal.eraseDisplay(.scrollback, value),