hyprland: Super+E uses ghostty +new-window so yazi reuses the running instance

This reverts commit 6302cc1406.

settings/hyprland.nix

@@ -276,11 +276,6 @@ in
             -- on them reads as "reset this thing", not "close it".
             local scratchpads = {
               ["dev.fred.scratchpad"] = "ghostty --class=dev.fred.scratchpad --title=scratchpad",
-              -- Yazi, parked the same way. A fresh `ghostty -e yazi` per press
-              -- has to link 131 shared libraries and init GTK before it draws
-              -- anything, so SUPER+E felt sluggish even with the daemon warm.
-              -- Toggling a special workspace spawns nothing.
-              ["dev.fred.files"] = "ghostty --class=dev.fred.files --title=files -e yazi",
               -- Spotify sets its own class, so no --class trick here; the
               -- lookup below lowercases before falling back, which covers both
               -- the Wayland app id and the XWayland "Spotify".
@@ -331,7 +326,6 @@ in
               -- login so SUPER+Return is always an instant toggle and the shell
               -- keeps its history/cwd between peeks.
               hl.exec_cmd(scratchpads["dev.fred.scratchpad"])
-              hl.exec_cmd(scratchpads["dev.fred.files"])
               -- swayosd removed; volume/brightness OSD handled by quickshell
               ${lib.optionalString isMacbook ''hl.exec_cmd("hypridle")''}
             end)
@@ -407,20 +401,6 @@ in
               center = true,
             })
 
-            -- Yazi scratchpad — SUPER+E.
-            hl.window_rule({
-              match = { class = "^dev.fred.files$" },
-              workspace = "special:files silent",
-            })
-
-            hl.window_rule({
-              name  = "files-inset",
-              match = { class = "^dev.fred.files$" },
-              float = true,
-              size = "80% 80%",
-              center = true,
-            })
-
             -- Games stall on other workspaces: no frame callbacks = no render =
             -- game loop blocks. Keep them ticking in the background at
             -- misc:render_unfocused_fps (15).
@@ -467,7 +447,13 @@ in
             -- palette instead of needing a GTK restart. Nemo stays one key
             -- away on Super+N — it is the only one of the two that can drag
             -- a file into a browser.
-            hl.bind(mod .. " + E", toggle_scratchpad("files", "dev.fred.files"))
+            --
+            -- +new-window, not `-e yazi`: -e force-sets gtk-single-instance=false
+            -- so the CLI args are respected, which means every press builds a
+            -- whole second Ghostty application — GTK init, config parse, font
+            -- discovery, renderer setup. +new-window instead asks the running
+            -- instance over D-Bus to open a window, and forwards --command.
+            hl.bind(mod .. " + E", hl.dsp.exec_cmd("ghostty +new-window --working-directory=~/ --command=yazi"))
             hl.bind(mod .. " + N", hl.dsp.exec_cmd("nemo"))
             hl.bind(mod .. " + R", hl.dsp.exec_cmd("${pkgs.quickshell}/bin/qs ipc call launcher toggle"))
             hl.bind(mod .. " + Q", hl.dsp.window.close())