ElyMark: a new file takes typing in visual; modes change no byte; PERF-07 timed (C14.6)

The component library opens an empty visual document's end on focus.
The view logs once when its mode first takes input; 1 MB opens to
visual in 341 ms P50 on Windows.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

Cargo.toml

@@ -19,7 +19,7 @@ jiff = "0.2"
 anyhow = "1"
 directories = "6"
 dunce = "1"
-ely-gpui-component = { git = "https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components", rev = "f59c9f7f500be3b42ea184e96f747549f006099d" }
+ely-gpui-component = { git = "https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components", rev = "6f0401e96706502f2229d73dd50bacbcc48b4349" }
 env_logger = "0.11"
 gpui = { package = "gpui-pre", version = "=0.3.8", default-features = false, features = ["stacker"] }
 gpui_platform = { package = "gpui-pre-platform", version = "=0.3.8", features = ["font-kit", "wayland", "x11"] }