refactor(sway): stash thunderbird in scratchpad instead of hidden ws

waybar's sway/workspaces has no ignore-list (that option is hyprland-only),
so the _tb workspace always leaked into the bar and into super+tab cycling.
Using sway's native scratchpad solves both: the __i3_scratch workspace is
filtered automatically. We run 'floating disable' right after 'scratchpad
show' so the window lands tiled on the current workspace, preserving the
intended UX.

3 files changed, 23 insertions, 42 deletions

diff --git a/dot_config/sway/config b/dot_config/sway/config
index 2c2d4bf..752c5c2 100644
--- a/dot_config/sway/config
+++ b/dot_config/sway/config
@@ -43,7 +43,7 @@ output * bg #282828 solid_color
 for_window [class="feh"] floating enable
 for_window [app_id="imv"] floating enable
 for_window [class="Tor Browser"] floating enable
-for_window [app_id="org.mozilla.Thunderbird" title=".*Mozilla Thunderbird$"] mark --add tb-main, move container to workspace _tb
+for_window [app_id="org.mozilla.Thunderbird" title=".*Mozilla Thunderbird$"] mark --add tb-main, move container to scratchpad
 
 # ── Standard keybinds (sway defaults) ─────────────────────────────────────────
 bindsym $mod+Return exec $term
@@ -117,9 +117,9 @@ bindsym $mod+Shift+e exec swaynag -t warning -m 'Exit sway?' -B 'Yes' 'swaymsg e
 
 # ── Personal keybinds ─────────────────────────────────────────────────────────
 
-# Workspace cycling (skips the _tb stash workspace)
-bindsym $mod+Tab exec ~/.config/sway/ws-cycle.sh next
-bindsym $mod+Shift+Tab exec ~/.config/sway/ws-cycle.sh prev
+# Workspace cycling
+bindsym $mod+Tab workspace next_on_output
+bindsym $mod+Shift+Tab workspace prev_on_output
 
 # Volume
 bindsym XF86AudioRaiseVolume exec pactl set-sink-volume @DEFAULT_SINK@ +5%
@@ -156,8 +156,8 @@ mode "qr" {
 }
 bindsym $mod+z mode "qr"
 
-# Thunderbird toggle: main window parked on hidden workspace _tb; this pulls it
-# to the current workspace (tiled) or sends it back. Child windows (compose,
+# Thunderbird toggle: main window stashed in the scratchpad; this pulls it to
+# the current workspace (tiled) or sends it back. Child windows (compose,
 # viewer, calendar, prefs) tile normally wherever Thunderbird spawns them.
 bindsym $mod+t exec ~/.config/sway/tb-toggle.sh
 
diff --git a/dot_config/sway/executable_tb-toggle.sh b/dot_config/sway/executable_tb-toggle.sh
index 5288484..e52f20a 100644
--- a/dot_config/sway/executable_tb-toggle.sh
+++ b/dot_config/sway/executable_tb-toggle.sh
@@ -1,31 +1,30 @@
 #!/bin/sh
-# Toggle the Thunderbird main window between the current workspace (tiled)
-# and a hidden stash workspace. If Thunderbird isn't running yet, launch it —
-# the for_window rule in sway config will mark and park it on the stash.
+# Toggle the Thunderbird main window between the sway scratchpad and the
+# current workspace (tiled). If Thunderbird isn't running yet, launch it —
+# the for_window rule in sway config will mark it and stash it.
 
 set -eu
 
-STASH=_tb
 MARK=tb-main
 
-current_ws=$(swaymsg -t get_workspaces \
-    | jq -r '.[] | select(.focused) | .name')
-
-tb_ws=$(swaymsg -t get_tree \
-    | jq -r --arg m "$MARK" '
-        first(
-          .. | objects
-          | select(.type=="workspace")
-          | select([.. | objects | select(.marks? // [] | index($m))] | length > 0)
-          | .name
-        ) // empty')
+# Find the workspace ancestor name of the con carrying MARK.
+# __i3_scratch means the window is currently stashed in the scratchpad.
+tb_ws=$(swaymsg -t get_tree | jq -r --arg m "$MARK" '
+    first(
+      .. | objects
+      | select(.type=="workspace")
+      | select([.. | objects | select(.marks? // [] | index($m))] | length > 0)
+      | .name
+    ) // empty')
 
 if [ -z "$tb_ws" ]; then
     exec thunderbird
 fi
 
-if [ "$tb_ws" = "$current_ws" ]; then
-    swaymsg "[con_mark=\"$MARK\"] move container to workspace $STASH" >/dev/null
+if [ "$tb_ws" = "__i3_scratch" ]; then
+    # scratchpad show reveals it as floating; floating disable tiles it on the
+    # current workspace.
+    swaymsg "[con_mark=\"$MARK\"] scratchpad show, floating disable" >/dev/null
 else
-    swaymsg "[con_mark=\"$MARK\"] move container to workspace $current_ws, focus" >/dev/null
+    swaymsg "[con_mark=\"$MARK\"] move container to scratchpad" >/dev/null
 fi
diff --git a/dot_config/sway/executable_ws-cycle.sh b/dot_config/sway/executable_ws-cycle.sh
deleted file mode 100644
index 28a97f0..0000000
--- a/dot_config/sway/executable_ws-cycle.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/sh
-# Cycle to the next/previous workspace on the current output, skipping
-# the _tb stash workspace. Usage: ws-cycle.sh next|prev
-set -eu
-
-DIR=${1:?usage: ws-cycle.sh next|prev}
-SKIP=_tb
-
-swaymsg -t get_workspaces | jq -r --arg dir "$DIR" --arg skip "$SKIP" '
-    (map(select(.focused)) | .[0]) as $cur
-    | map(select(.output == $cur.output and .name != $skip))
-    | sort_by(.num, .name) as $list
-    | ($list | map(.name == $cur.name) | index(true)) as $i
-    | if $i == null then $list[0].name
-      elif $dir == "next" then $list[(($i + 1) % ($list | length))].name
-      else $list[(($i - 1 + ($list | length)) % ($list | length))].name
-      end
-' | xargs -I{} swaymsg workspace {} >/dev/null