Brummel
9b0eb58cd9
Round-trip-preserving — the byte-isomorphic Form-A ↔ JSON-AST tests, the hash pins, and the full fixture-corpus parse are all green; error strings passed through verbatim, not homogenised. - The Int/Float/Str/true/false literal-token match was inlined in three parsers; extracted try_parse_literal_token and routed parse_pat_lit and the parse_term fallthrough through it. - parse_doc and parse_export were identical but for the keyword; both now go through one parse_string_attr, and the previously doc/export-bypassed expect_string helper is back on the shared path. - parse_effects_clause and parse_forall_constraints_clause shared the expect-keyword / collect / reject-empty / expect-rparen shape; unified under parse_repeating_clause, with each clause's empty-error message passed in. parse_intrinsic_attr was left inline-able-but-not-inlined: it has two call sites, so inlining would re-duplicate a documented helper.