fix: register FBs with only VAR/TEMP as types + add SCLRescanWorkspaceTypes command

src/main.lua

@@ -71,6 +71,9 @@ local capabilities = {
 	workspaceSymbolProvider = true,
 	documentFormattingProvider = true,
 	documentRangeFormattingProvider = false,
+	executeCommandProvider = {
+		commands = { "SCLRescanWorkspaceTypes" },
+	},
 }
 
 local function uri_to_path(uri)
@@ -1812,6 +1815,16 @@ function handlers.textDocument_formatting(params)
 	return formatter.format_document(doc.content, format_options)
 end
 
+function handlers.workspace_executeCommand(params)
+	if params.command ~= "SCLRescanWorkspaceTypes" then
+		return nil
+	end
+
+	plc_json.clear_cache()
+
+	return {}
+end
+
 local function handle_message(message)
 	if message.method == "$/cancelRequest" then
 		return nil

src/plc_json.lua

@@ -127,7 +127,7 @@ local function parse_scl_type_file(content)
       fb_inouts = {}
       current_fb_section = nil
     elseif in_fb and trimmed:match("^END_FUNCTION_BLOCK") then
-      if fb_name and (#fb_inputs > 0 or #fb_outputs > 0 or #fb_inouts > 0) then
+      if fb_name then
         types[fb_name] = {
           name = fb_name,
           kind = "function_block",