Remove opencode, ignore doc folder in telescope, remove :W, add mask as runner

lua/plugins/navigation.lua

@@ -19,7 +19,10 @@ return {
 				{ '<Leader>fk', telescope.keymaps,      { noremap = true, silent = true }, desc = "Search in keymaps" },
 				{ '<leader>cc', telescope.colorscheme,  desc = "Select colorscheme" },
 			})
-		end
+			require("telescope.config").set_defaults({
+				file_ignore_patterns = { "doc/" }
+			})
+		end,
 	},
 	{
 		'nvim-telescope/telescope-ui-select.nvim',