feat: split the bar in two on DP-3

DP-3 is rotated, so a bar there is 1080px wide rather than 1920, and one bar
holding every module was too crowded. Status sits on top now, the desktop
itself along the bottom: workspaces on the left, open windows on the right.
Both bars are one waybar process reading one stylesheet, because waybar takes
a top-level array of bars, so the two cannot drift apart.

Presentation mode is the statusctl-backed module the DP-1 bar already runs,
rather than the wb-idle module written for this bar. It talks to files under
XDG_RUNTIME_DIR instead of to quickshell, so it keeps working while the shell
is down, and it already emits a state class, so the glyphs are simply dropped
and the icon chosen in CSS. wb-idle and its module are gone.

The module needs a format of one space. It defaults to "{text}", statusctl
emits an empty text, and waybar draws no widget at all for a custom module
whose formatted output is empty: not an empty pill, no pill. That is the same
trap the launcher hit, and it cost a wrong diagnosis on the way: a min-height
was added first on the theory that the pill was collapsing, which was treating
a symptom of a widget that did not exist. A forced red background proved it
was never drawn at all.

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

1 files changed, 28 insertions, 0 deletions

diff --git a/modules/custom/presentation.jsonc b/modules/custom/presentation.jsonc
new file mode 100644
index 0000000..3843cb5
--- /dev/null
+++ b/modules/custom/presentation.jsonc
@@ -0,0 +1,28 @@
+// Presentation mode, the same module the DP-1 bar runs.
+//
+// `statusctl presentation watch` streams waybar JSON on every change: it
+// already emits an empty text and a class of activated, deactivated or down,
+// so the icon is chosen in CSS from that class and no format is needed here.
+// Dropping format-icons is the whole difference from the DP-1 copy, which
+// draws the same two states as Nerd Font glyphs.
+//
+// `down` means the state file is missing, which is not the same as off: the
+// mode cannot be read at all. It gets its own icon rather than borrowing the
+// off one, so a broken watcher does not read as a working bar.
+//
+// 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
+// "{text}", statusctl emits an empty text, and waybar draws no widget at all
+// for a custom module whose formatted output is empty: not an empty pill, no
+// pill. A space gives the label real content to be allocated for, shows
+// nothing itself, and leaves the icon to the CSS background.
+{
+	"custom/presentation": {
+		"exec": "$HOME/bin/statusctl presentation watch",
+		"return-type": "json",
+		"on-click": "$HOME/bin/statusctl presentation toggle",
+		"format": " ",
+		"tooltip": true
+	}
+}