fix(launcher): prioritize in-launcher FileBrowser on handhelds and fix modalUp detection

src/import/LauncherView.lua

@@ -5604,6 +5604,8 @@ end
 -- a click on the scrim lands on whatever button happens to be behind it.
 -- Keep this list in sync with buildModals below.
 local function modalUp(imp)
+  if Kit.FileBrowser and Kit.FileBrowser.active then return true end
+  if Kit.VirtualKeyboard and Kit.VirtualKeyboard.active then return true end
   return (imp._settingsText or imp._settings or imp._rename
     or imp._indexPrompt or imp._modConfirm or imp._modReleaseNotes
     or imp._appPatchNotes

src/import/RomImporter.lua

@@ -2055,6 +2055,25 @@ function RomImporter:chooseMod()
     end
     return
   end
+  local isHandheld = os.getenv("HANDHELD") == "1" or os.getenv("PORTMASTER") == "1"
+    or os.getenv("POKEPORT_HANDHELD") == "1" or os.getenv("TRIMUI") == "1"
+    or os.getenv("MUOS") == "1" or os.getenv("KNULLI") == "1"
+
+  if isHandheld then
+    local okKit, Kit = pcall(require, "src.ui.kit.Kit")
+    if okKit and Kit.FileBrowser then
+      self._padCursorActive = false
+      Kit.FileBrowser.open({
+        title = "Select Mod (.zip)",
+        mode = "mod",
+        onSelect = function(pickedPath)
+          self:_installMod(pickedPath)
+        end,
+      })
+      return
+    end
+  end
+
   local path = chooseZip()
   if path then
     self:_installMod(path)
@@ -2494,6 +2513,25 @@ function RomImporter:chooseSaveImport(version)
     end
     return
   end
+  local isHandheld = os.getenv("HANDHELD") == "1" or os.getenv("PORTMASTER") == "1"
+    or os.getenv("POKEPORT_HANDHELD") == "1" or os.getenv("TRIMUI") == "1"
+    or os.getenv("MUOS") == "1" or os.getenv("KNULLI") == "1"
+
+  if isHandheld then
+    local okKit, Kit = pcall(require, "src.ui.kit.Kit")
+    if okKit and Kit.FileBrowser then
+      self._padCursorActive = false
+      Kit.FileBrowser.open({
+        title = "Select Save (.sav)",
+        mode = "save",
+        onSelect = function(pickedPath)
+          self:_importSave(version, pickedPath)
+        end,
+      })
+      return
+    end
+  end
+
   local path = chooseSav()
   if path then
     self:_importSave(version, path)
@@ -2651,6 +2689,25 @@ function RomImporter:choose(version)
     end
     return
   end
+  local isHandheld = os.getenv("HANDHELD") == "1" or os.getenv("PORTMASTER") == "1"
+    or os.getenv("POKEPORT_HANDHELD") == "1" or os.getenv("TRIMUI") == "1"
+    or os.getenv("MUOS") == "1" or os.getenv("KNULLI") == "1"
+
+  if isHandheld then
+    local okKit, Kit = pcall(require, "src.ui.kit.Kit")
+    if okKit and Kit.FileBrowser then
+      self._padCursorActive = false
+      Kit.FileBrowser.open({
+        title = "Select " .. (GameVersion.info(self.chooseVersion).displayName or "ROM"),
+        mode = "rom",
+        onSelect = function(pickedPath)
+          self:startPath(pickedPath)
+        end,
+      })
+      return
+    end
+  end
+
   local path = chooseRom(GameVersion.info(self.chooseVersion).displayName)
   if path then
     self:startPath(path)