fix: backward-compat + bug fixes and man-page build fix for 0.16.0

Post-0.15.0 review of the 0.15.0..HEAD range surfaced regressions and
bugs. This restores backward compatibility for existing configs/CSS,
fixes confirmed defects, and repairs the scdoc man-page build break on
master. Pango-markup tooltips are intentional and were kept.

Backward-compat restorations:
- AModule: honor legacy numeric Gdk::CursorType cursor values (int overload)
- memory: correct GiB divisor (was ~2.3% low); round bare {} placeholders
- wireplumber: scale max-volume into the linear domain so the cap works again
- idle_inhibitor: gate right/middle-click deactivate & scroll on dynamic-timeouts;
  accept both dynamic-timeout(s); widen timeout to double (no fractional truncation)
- custom: keep #custom-<name>.<class> CSS selectors working (classes on box_)
- image: don't wordexp-split a single path; fall back to the literal path
- niri/window: restore hide-when-empty (new show-empty opt-in); escape tooltip
- wlr/taskbar: plain-text tooltip when markup is disabled

Bug fixes:
- tray: fix use-after-free in onAdd; guard the watcher retry timeout
- hyprland: clamp max-windows iterator (OOB); drop duplicate language tooltip block
- niri/window: supply {col}/{max_col} args in the empty branch (fmt::format_error)
- mpris: escape {dynamic}/{player} tooltip; fix dangling player; albumArtist source
- mango: fix use-after-free race (dispatch under callback_mutex_)
- mpd: contain throwing checkErrors in noexcept idle paths (no std::terminate/UAF)
- keyboard_state: always render every lock label, with guarded defaults
- bluetooth: bound GATT ReadValue timeout, opt-in + services-resolved gating,
  preserve authoritative Battery1 percentage
- wireplumber: fix WpDevice reference leak / NULL handling
- battery, clock, dwl, wayfire, graph, custom_graph, transform, river: assorted
  crash/logic fixes

Man page / build:
- niri-workspaces: fix scdoc "indented by an amount greater than 1"
  (workspace-taskbar sub-options were mis-indented; breaks man-page build)
- document new show-empty (niri/window); correct network {txBitrate}/{rxBitrate}

Not compiled locally (no gtkmm on this host); C++ build relies on CI.
Man pages validated with scdoc 1.11.4.

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

src/modules/hyprland/language.cpp

@@ -53,24 +53,29 @@ auto Language::update() -> void {
   std::string tooltipContent = std::string{};
   bool tooltip_enabled = tooltipEnabled();
   if (tooltip_enabled) {
-    if (config_.isMember("tooltip-format")) {
-      auto tooltip_format = config_["tooltip-format"].asString();
-      if (config_.isMember("tooltip-format-" + layout_.short_description + "-" + layout_.variant)) {
-        const auto propName = "tooltip-format-" + layout_.short_description + "-" + layout_.variant;
-        tooltipContent = fmt::format(fmt::runtime(tooltip_format), config_[propName].asString());
-      } else if (config_.isMember("tooltip-format-" + layout_.short_description)) {
-        const auto propName = "tooltip-format-" + layout_.short_description;
-        tooltipContent = fmt::format(fmt::runtime(tooltip_format), config_[propName].asString());
-      } else {
-        tooltipContent =
-            trim(fmt::format(fmt::runtime(tooltip_format), fmt::arg("long", layout_.full_name),
-                             fmt::arg("short", layout_.short_name),
-                             fmt::arg("shortDescription", layout_.short_description),
-                             fmt::arg("variant", layout_.variant)));
-      }
+    // Default to "{long}" when no tooltip-format is provided, matching the man page
+    auto tooltip_format =
+        config_.isMember("tooltip-format") ? config_["tooltip-format"].asString() : "{long}";
+    if (config_.isMember("tooltip-format-" + layout_.short_description + "-" + layout_.variant)) {
+      const auto propName = "tooltip-format-" + layout_.short_description + "-" + layout_.variant;
+      tooltipContent = trim(fmt::format(fmt::runtime(tooltip_format), config_[propName].asString(),
+                                        fmt::arg("long", layout_.full_name),
+                                        fmt::arg("short", layout_.short_name),
+                                        fmt::arg("shortDescription", layout_.short_description),
+                                        fmt::arg("variant", layout_.variant)));
+    } else if (config_.isMember("tooltip-format-" + layout_.short_description)) {
+      const auto propName = "tooltip-format-" + layout_.short_description;
+      tooltipContent = trim(fmt::format(fmt::runtime(tooltip_format), config_[propName].asString(),
+                                        fmt::arg("long", layout_.full_name),
+                                        fmt::arg("short", layout_.short_name),
+                                        fmt::arg("shortDescription", layout_.short_description),
+                                        fmt::arg("variant", layout_.variant)));
     } else {
-      // if no tooltip format is provided, use the same text as the module
-      tooltipContent = layoutName;
+      tooltipContent =
+          trim(fmt::format(fmt::runtime(tooltip_format), fmt::arg("long", layout_.full_name),
+                           fmt::arg("short", layout_.short_name),
+                           fmt::arg("shortDescription", layout_.short_description),
+                           fmt::arg("variant", layout_.variant)));
     }
     spdlog::debug("hyprland language formatted tooltip content {}", tooltipContent);
   }
@@ -85,24 +90,6 @@ auto Language::update() -> void {
     label_.hide();
   }
 
-  // Tooltip support
-  if (tooltipEnabled()) {
-    std::string tooltipFormat;
-    if (config_["tooltip-format"].isString()) {
-      tooltipFormat = config_["tooltip-format"].asString();
-    } else {
-      tooltipFormat = "{long}";
-    }
-    auto tooltipText =
-        trim(fmt::format(fmt::runtime(tooltipFormat), fmt::arg("long", layout_.full_name),
-                         fmt::arg("short", layout_.short_name),
-                         fmt::arg("shortDescription", layout_.short_description),
-                         fmt::arg("variant", layout_.variant)));
-    label_.set_tooltip_text(tooltipText);
-  } else {
-    label_.set_tooltip_text("");
-  }
-
   ALabel::update();
 }