re-enable repl

src/main.zig

@@ -188,8 +188,7 @@ pub fn main() !void {
     const scri_path = try (args_it.next(allocator) orelse @panic("expected scri path or 'repl'"));
 
     if (std.mem.eql(u8, scri_path, "repl")) {
-        @panic("TODO bring repl back");
-        // return try doRepl(allocator, &args_it);
+        return try doRepl(allocator, &args_it);
     }
 
     var file = try std.fs.cwd().openFile(scri_path, .{});