hypr: use nstack auto_stacks so new windows always get their own column

The columns layout previously relied on a 25ms-delayed 'setstackcount
<count>' dispatch from lua window events, which missed cases like
float->tile toggles (no event fires) and dispatch routing to the wrong
workspace, leaving a stale stack count and tiling new windows into an
existing column. The nstack plugin now sizes stacks to the window count
natively (auto_stacks); the lua path keeps the numeric dispatch for the
grid layout and falls back to it when an older plugin build is loaded.

Bumps hyprNStack to 2ba62ce (auto_stacks support).

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

dotfiles/config/hypr/hyprland/core.lua

@@ -171,27 +171,39 @@ function M.setup(ctx)
     end
   end
 
+  -- True when the running hyprNStack build knows the auto_stacks option
+  -- (old builds crash-parse "setstackcount auto", so callers must gate on this).
+  local function nstack_supports_auto_stacks()
+    return hl.get_config("plugin.nstack.layout.auto_stacks") ~= nil
+  end
+
   local function apply_nstack_config()
     if verify_config or not enable_nstack or not configure_nstack_plugin_from_lua then
       return
     end
 
+    local layout = {
+      orientation = "left",
+      new_on_top = false,
+      new_near_focused = true,
+      new_is_master = false,
+      no_gaps_when_only = true,
+      special_scale_factor = 0.8,
+      inherit_fullscreen = true,
+      stacks = 1,
+      center_single_master = false,
+      mfact = 0.0,
+      single_mfact = 1.0,
+    }
+
+    if nstack_supports_auto_stacks() then
+      layout.auto_stacks = true
+    end
+
     hl.config({
       plugin = {
         nstack = {
-          layout = {
+          layout = layout,
-            orientation = "left",
-            new_on_top = false,
-            new_near_focused = true,
-            new_is_master = false,
-            no_gaps_when_only = true,
-            special_scale_factor = 0.8,
-            inherit_fullscreen = true,
-            stacks = 1,
-            center_single_master = false,
-            mfact = 0.0,
-            single_mfact = 1.0,
-          },
         },
       },
     })
@@ -589,6 +601,7 @@ function M.setup(ctx)
   ctx.hyprexpo = hyprexpo
   ctx.hyprwinview = hyprwinview
   ctx.workspacehistory = workspacehistory
+  ctx.nstack_supports_auto_stacks = nstack_supports_auto_stacks
   ctx.apply_nstack_config = apply_nstack_config
   ctx.apply_hyprexpo_config = apply_hyprexpo_config
   ctx.apply_hyprwinview_config = apply_hyprwinview_config

dotfiles/config/hypr/hyprland/layouts.lua

@@ -69,6 +69,13 @@ function M.setup(ctx)
       return
     end
 
+    if current_layout == columns_layout and nstack_supports_auto_stacks() then
+      -- The plugin sizes stacks to the window count on every recalculation,
+      -- which also covers paths that fire no window events (e.g. float -> tile).
+      dispatch(hl.dsp.layout("setstackcount auto"))
+      return
+    end
+
     local stack_count = count
     if current_layout == grid_layout then
       stack_count = math.ceil(math.sqrt(count))

nixos/flake.lock

@@ -860,11 +860,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1778996094,
+        "lastModified": 1783055075,
-        "narHash": "sha256-62Xp8TFDrHER1GD5g9c/gvWmD0QsBNxh0OsnHzQIU3M=",
+        "narHash": "sha256-FH4KUwZpOQqhd/LGjPgrq0CiWlro/t9h/jBGQnD8fdc=",
         "owner": "colonelpanic8",
         "repo": "hyprNStack",
-        "rev": "1abcbbe76bda28915ab6f76572bef2f6b3364b01",
+        "rev": "2ba62ce3dcddfe022276163d716bb654c9d7f16d",
         "type": "github"
       },
       "original": {