feat(presentation): draw a running game as its own state

The module emits a third class, gaming, when the shell's game detector
holds presentation on. It gets its own icon rather than sharing the
presentation one: the click is inert in that state, so the pill has to
say why the mode is on and that clicking will not turn it off.

The icon joins wb-icon's selftest, which is what makes an icon theme
missing it fail at install time instead of rendering an empty pill.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/modules/custom/presentation.jsonc b/modules/custom/presentation.jsonc
index 8544b26..a6dd20a 100644
--- a/modules/custom/presentation.jsonc
+++ b/modules/custom/presentation.jsonc
@@ -10,6 +10,12 @@
 // normal state before anything has written one, and a file cannot report
 // whether a watcher is alive anyway.
 //
+// A third class, gaming, covers the mode being held on by a running game: the
+// shell's detector owns status.gaming and presentation is the OR of the two,
+// so a game turns the mode on without touching the manual half. The click is
+// inert in that state, statusctl refuses the toggle, because the detector
+// would reassert it within its poll anyway.
+//
 // statusctl talks to files under XDG_RUNTIME_DIR rather than to quickshell,
 // so this keeps working while the shell is down.
 // The format is a single space, and it has to be something. It defaults to