fix: guard macOS-only configs behind has('mac') check

lua/cargdev/core/options.lua

@@ -136,18 +136,20 @@ g.loaded_ruby_provider = 0 -- Disable Ruby provider (optional)
 
 g.python3_host_prog = fn.expand("~/.local/pipx/venvs/pynvim/bin/python")
 
--- Clipboard provider optimization (macOS)
-g.clipboard = {
-  name = "macOS-clipboard",
-  copy = {
-    ["+"] = "pbcopy",
-    ["*"] = "pbcopy",
-  },
-  paste = {
-    ["+"] = "pbpaste",
-    ["*"] = "pbpaste",
-  },
-}
+-- Clipboard provider optimization (macOS only)
+if vim.fn.has("mac") == 1 then
+  g.clipboard = {
+    name = "macOS-clipboard",
+    copy = {
+      ["+"] = "pbcopy",
+      ["*"] = "pbcopy",
+    },
+    paste = {
+      ["+"] = "pbpaste",
+      ["*"] = "pbpaste",
+    },
+  }
+end
 
 -- Lua specific settings
 opt.runtimepath:append(vim.fn.stdpath("config") .. "/lua")

lua/cargdev/plugins/vimtex.lua

@@ -10,12 +10,12 @@ return {
   "lervag/vimtex",
   ft = { "tex", "latex", "bib" },
   config = function()
-    -- Use Skim on macOS (or change to your preferred PDF viewer)
-    vim.g.vimtex_view_method = "skim"
-
-    -- Alternatively, use the general viewer (Preview.app)
-    -- vim.g.vimtex_view_method = "general"
-    -- vim.g.vimtex_view_general_viewer = "open"
+    -- PDF viewer: Skim on macOS, zathura elsewhere
+    if vim.fn.has("mac") == 1 then
+      vim.g.vimtex_view_method = "skim"
+    else
+      vim.g.vimtex_view_method = "zathura"
+    end
 
     -- Compiler settings
     vim.g.vimtex_compiler_method = "latexmk"