docs(man): backfill man pages with wiki-only info (source-of-truth pass)

Port information that previously lived only in the GitHub wiki into the
authoritative scdoc man pages, so the man pages become the single source
of truth for module documentation.

33 man pages enriched (options, format replacements, actions, style
selectors, troubleshooting and implementation notes). Additions were
verified against the source; stale/incorrect wiki entries were
deliberately not ported. All pages still compile with scdoc.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

man/waybar-wireplumber.5.scd

@@ -36,6 +36,10 @@ The *wireplumber* module displays the current volume reported by WirePlumber.
 	typeof: string ++
 	The format used for the *{format_source}* sub-string when the source (microphone) is muted.
 
+*format-icons*: ++
+	typeof: array ++
+	Based on the current volume, the corresponding icon gets selected. The order is *low* to *high*.
+
 *node-type*: ++
 	typeof: string ++
 	default: *Audio/Sink* ++
@@ -90,6 +94,14 @@ The *wireplumber* module displays the current volume reported by WirePlumber.
 	default: cubic_percent
 	The scale to use for the scrolling volume change. Options are 'linear', 'db', 'cubic', and 'cubic_percent'.
 
+*reverse-scrolling*: ++
+	typeof: bool ++
+	Option to reverse the scroll direction for touchpads.
+
+*reverse-mouse-scrolling*: ++
+	typeof: bool ++
+	Option to reverse the scroll direction for mice.
+
 *on-click*: ++
 	typeof: string ++
 	Command to execute when clicked on the module.
@@ -142,6 +154,8 @@ The *wireplumber* module displays the current volume reported by WirePlumber.
 
 *{volume_db}*: Volume in decibel scale as float.
 
+*{icon}*: Icon, as defined in *format-icons*.
+
 *{node_name}*: The node's nickname as reported by WirePlumber (*node.nick* property)
 
 *{source_volume}*: Source (microphone) volume in percentage, cubic scale as integer.