fix: draw the launcher, and prune stale links on install

A custom module renders nothing at all when its format is empty, and the
format has to be empty because the Slackware mark is an icon rather than
text, so the launcher pill never appeared. It is an image module now, which
takes a path and needs no label: the same reason the language flag is one.

install.sh only ever added links, so the module file this replaces left a
dangling symlink behind that every later install would step over. It now
prunes links whose source has gone, and a reinstall repairs itself.

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

1 files changed, 5 insertions, 7 deletions

diff --git a/styles/modules.css b/styles/modules.css
index 647465f..ade8a88 100644
--- a/styles/modules.css
+++ b/styles/modules.css
@@ -10,19 +10,17 @@
  * Launcher: the one always-coloured pill, and the desktop's identity. *
  * ------------------------------------------------------------------ */
 
-#custom-launcher {
+/* The mark itself is the image module's own content, so this only draws the
+ * pill it sits in. */
+#image.launcher {
 	background: @accent;
-	background-image: url("@CONFIG@/slackware.svg");
-	background-repeat: no-repeat;
-	background-position: center;
-	background-size: 18px 18px;
-	min-width: 22px;
 	padding: 2px 10px;
+	min-width: 22px;
 }
 
 /* The accent pill inverts on hover rather than lightening: it is already the
  * brightest thing on the bar. */
-#custom-launcher:hover {
+#image.launcher:hover {
 	background-color: @main-bg;
 }