refactor(terminal): add scrollback size configuration option

src/config.zig

@@ -12,6 +12,7 @@ gutter_width_minimum: usize = 4,
 gutter_width_maximum: usize = 8,
 enable_terminal_cursor: bool = true,
 enable_terminal_color_scheme: bool = false,
+terminal_scrollback_size: u16 = 500,
 enable_sgr_pixel_mode_support: bool = true,
 enable_modal_dim: bool = true,
 highlight_current_line: bool = true,

src/tui/terminal_view.zig

@@ -264,7 +264,7 @@ const Vt = struct {
             &env,
             .{
                 .winsize = .{ .rows = rows, .cols = cols, .x_pixel = 0, .y_pixel = 0 },
-                .scrollback_size = 0,
+                .scrollback_size = tui.config().terminal_scrollback_size,
                 .initial_working_directory = blk: {
                     const project = tp.env.get().str("project");
                     break :blk if (project.len > 0) project else home;