claude@clouddev1
8c3b13b313
Mirror Phase 1's capture-at-parse technique on the UPDATE SET assignment list. build_sql_update calls the new capture_set_literals (data.rs), which walks the matched tokens (no reparse, no grammar change) and classifies each top-level `SET col = <rhs>` as a literal (Some, incl. signed numbers) or an expression (None), using paren depth so a comma inside a function call or a `where` inside a scalar subquery is not mistaken for a boundary, and the trailing top-level WHERE is excluded. Command::SqlUpdate gains set_literals; do_sql_update validates the literals against their column types via the shared impl_value_for before the still verbatim update; user_value_for_column reads them so a constraint error names the offending value. WHERE stays unvalidated; execution and command identity are unchanged. Also corrects the stale data.rs header comment (DSL typed slots are wired, not "deferred") and flips ADR-0036 + README to Phases 1–2 implemented. Tests: 1934 passing (+4), 0 failed, 0 skipped, 1 ignored; clippy clean.