feat(lang): L9 resource files - registry ... from

registry NAME of RECORD [as PREFIX] from "file.lres" fills a registry from a data
file of key { field: value } entries, read at compile time with the record as its
schema: every entry is checked like a def, errors name the resource file's line,
nested records and lists of them are bare { } / [{ }] typed by their fields, and
values are expressions in the registry's module. The entries are compiled in, so
nothing parses at start-up and a build that succeeds has validated its resources.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

selfhost/frontend/parse.ludic

@@ -296,6 +296,7 @@ function p_primary() -> Node {
     let n = node(E_ID); n.s = t.text; pi += 1; return n
   }
   if is_op("(") { pi += 1; skipnl(); let e = expr(); skipnl(); eat_op(")"); return e }
+  if g_res_mode and is_op("{") { return record() }   # L9: a resource's nested record, typed by its field
   perr("expected expression")
   return node(E_INT)
 }