claude@clouddev1
fdaf7e3e0e
New `dsl::keyword` module: macro-driven Keyword and Punct enums (single source of truth — enum, lex-side mapping, catalog-key derivation generated from one declaration). New `dsl::lexer` module: tokenizer producing a span-tagged Vec<Token>. Always succeeds; lex-shape errors (unterminated string, unrecognised character, malformed flag) embed as TokenKind::Error tokens so I4 can highlight invalid input uniformly. Parser refactored from `Parser<'a, &'a str, ...>` to `Parser<'a, &'a [Token], ...>`. All 50+ existing parser unit tests ported and passing; aggregation across `choice` now works as designed (e.g. `add` → "expected `1` or `column`", `drop` → "expected `column`, `relationship`, or `table`", `frobulate Customers` lists all ten command-entry keywords). Custom `try_map` content errors (unknown type, mutually-exclusive flags, "with pk needs at least one column", "specified twice") preserved. `replay` bare-path UX kept via the source-slice special case from ADR-0020 §6 (~10 lines, documented inline). Tests: 650 passing, 0 failing, 1 ignored (610 baseline + 40 new lexer/keyword tests). Clippy clean.