Ripple and Glitch are gone; Crt stays

The user tried them live and wants them removed entirely: the builtins,
their levels, config keys and leader paths (tR, tg), their slots in the
built-in chain, their shaders (source and prebuilt), EffectCode paths, and
on macOS their scene flags (pardes.h), the Metal kernel's coordinate warps
and the Swift pointer mapping that mirrored them. Docs say so (decision 8
in docs/render-pipeline.md); config.md documents Crt's levels, Shader and
ShaderAnimation instead.

Shared files touched: macos.zig (flags). Not touched: pardes.zig,
Messages.zig, mouse.zig, gui.zig, detached/*.

1 files changed, 9 insertions, 10 deletions

diff --git a/docs/render-pipeline.md b/docs/render-pipeline.md
index 2fd6045b..7c94fbea 100644
--- a/docs/render-pipeline.md
+++ b/docs/render-pipeline.md
@@ -505,16 +505,14 @@ Mirror ghostty 1.3.2 (`zig-pkg/ghostty-*/src/renderer/shadertoy.zig`,
   `custom-shader-animation`): off = redraw only when content changes; on =
   continuous while the window is focused; always = continuous. Continuous means
   the shell redraws its retained Surface (3.1), never a core tick or render.
-- **Existing crt/ripple/glitch** become bundled Shadertoy files in
-  `shaders/post/` selected by the same builtins (decision 2: kept, polished);
-  `scene_effects` and `crt.frag.glsl`/`crt.zig` are deleted. Each bundled pass
-  takes a level, `Crt 0..3` (0 off, `on` the default 2, `off` and bare still
-  work), passed as `pardesLevel`: 2 is the polished rewrite, 3 at least as
-  strong as the old effects (pixels changed by more than 8 in a channel,
-  against a plain frame: Crt 18.3% vs 17.4% old, Ripple 11.1% vs 9.5%, Glitch
-  9.3% a frame vs 8.1%); a Glitch level raises how often it slips as well as
-  how hard. The chain is
-  `Crt`, `Ripple`, `Glitch` and `Shader <path>` in the order they were put in
+- **Existing crt** becomes a bundled Shadertoy file in `shaders/post/` under
+  the same builtin; `scene_effects` and `crt.frag.glsl`/`crt.zig` are deleted.
+  It takes a level, `Crt 0..3` (0 off, `on` the default 2, `off` and bare
+  still work), passed as `pardesLevel`: 2 is the polished rewrite, 3 at least
+  as strong as the old CRT (pixels changed by more than 8 in a channel against
+  a plain frame: 18.3% vs 17.4%). Ripple and Glitch were rewritten too, then
+  removed at the user's word after a live look (decision 8). The chain is
+  `Crt` and `Shader <path>` in the order they were put in
   (`Shader off` empties it of files), `ShaderAnimation off|on|always`
   (default on). The core keeps no clock for it: level A redraws are the
   shell's.
@@ -905,3 +903,4 @@ goldens; ssh/tty byte budgets; wire version bump breaks mixed-version attach.
 5. The animation pacing fix goes into the no-visual-change phase.
 6. Cursor blink is on by default.
 7. The bundled CRT has no barrel distortion, so clicks stay exact.
+8. (After trying them live) Ripple and Glitch are removed entirely; Crt stays.