- Decision recorded in CURRENT_TASK: replace with (no compat alias) - EBNF: add match_expr/pattern/guard; note legacy peek removal - Guides/Reference: update examples and wording (null-coalesce/safe-access sugar via match)
- Decision recorded in CURRENT_TASK: replace with (no compat alias) - EBNF: add match_expr/pattern/guard; note legacy peek removal - Guides/Reference: update examples and wording (null-coalesce/safe-access sugar via match)