Show the running app version on the Switch launcher header.

Add an NX-only yellow version chip so players can confirm which build is on the microSD after OTA or zip updates.

src/import/LauncherView.lua

@@ -33,6 +33,7 @@ local Theme = require("src.ui.kit.Theme")
 local Layout = require("src.ui.kit.Layout")
 local Loader = require("src.ui.kit.Loader")
 local GameVersion = require("src.core.GameVersion")
+local Version = require("src.core.Version")
 local Strings = require("src.core.Strings")
 
 local PAL = Theme.PAL
@@ -340,6 +341,21 @@ local function buildHeader(imp, m)
   local rx = m.x + m.w - m.pad
   local by = y + (rowH - gear) / 2
 
+  -- Switch-only: show the running app version opposite the settings gear so
+  -- players can confirm which build is on the microSD (OTA / zip updates).
+  if imp.isNX then
+    local label = "v" .. tostring(Version.engine or "?")
+    local tw = Kit.textWidth("small", label)
+    local padX = math.floor(12 * m.s)
+    local chipW = math.max(tw + 2 * padX, gear)
+    local lx = m.x + m.pad
+    Theme.fill(lx, by, chipW, gear, PAL.bg, 1)
+    Theme.stroke(lx, by, chipW, gear, PAL.yellow, Theme.A.hover, 1)
+    local th = Kit.textHeight("small")
+    Kit.text("small", label, lx + math.floor((chipW - tw) / 2),
+      by + math.floor((gear - th) / 2), PAL.yellow)
+  end
+
   -- Settings gear, top-right corner.
   imp._gearIcon = imp._gearIcon
     or love.graphics.newImage("assets/launcher/gear.png")

tests/engine/launcher_nx_version_chip_test.lua

@@ -0,0 +1,26 @@
+-- Switch launcher shows the running engine version in the header (NX only).
+-- Desktop/Android/iOS must not paint that chip.
+
+local function read(path)
+  local f = assert(io.open(path, "r"))
+  local s = f:read("*a")
+  f:close()
+  return s
+end
+
+local src = read("src/import/LauncherView.lua")
+
+assert(src:find('local Version = require%("src%.core%.Version"%)')
+  or src:find('require%("src%.core%.Version"%)'),
+  "LauncherView must require Version")
+
+assert(src:find("imp%.isNX", 1, false), "version chip must gate on isNX")
+
+-- The chip is inside an isNX block and prints Version.engine
+local nxBlock = src:match("if imp%.isNX then(.-)end\n\n  %-%- Settings gear")
+assert(nxBlock, "expected Switch-only version chip before the settings gear")
+assert(nxBlock:find("Version%.engine", 1, false), "chip must show Version.engine")
+assert(nxBlock:find('"v"', 1, true) or nxBlock:find('"v" %.%.', 1, false),
+  "chip label should be a v-prefixed version")
+
+print("ok — Switch launcher version chip is NX-gated and uses Version.engine")