Macroforge MCP Server

## Local Constants: `{$let}` Define local variables within the template scope: Rust ``` let items = vec![("user", "User"), ("post", "Post")]; let code = ts_template! {     {#for (key, class_name) in items}         {$let upper = class_name.to_uppercase()}         console.log("Processing @{upper}");         const @{key} = new @{class_name}();     {/for} }; ``` This is useful for computing derived values inside loops without cluttering the Rust code. ## Mutable Variables: `{$let mut}` When you need to modify a variable within the template (e.g., in a `while` loop), use `{$let mut}`: Rust ``` let code = ts_template! {     {$let mut count = 0}     {#for item in items}         console.log("Item @{count}: @{item}");         {$do count += 1}     {/for}     console.log("Total: @{count}"); }; ```