giles efd0d9168f Step 7d complete: exhaustive match checking + evaluator cleanup ...

Match exhaustiveness analysis:
- check-match-exhaustiveness function in evaluator.sx
- lint-node in tree-tools.sx checks match forms during format-check
- Warns on: no wildcard/catch-all, boolean missing true/false case
- (match x (true "yes")) → "match may be non-exhaustive"

Evaluator cleanup:
- Added missing step-sf-callcc definition (was in old transpiled output)
- Added missing step-sf-case definition (was in old transpiled output)
- Removed protocol functions from bootstrap skip set (they transpile fine)
- Retranspiled VM (bootstrap_vm.py) for compatibility

2650 tests pass (+5 from new features).

All Step 7 features complete:
  7a: ->> |> as-> pipe operators
  7b: Dict patterns, &rest, let-match destructuring
  7c: define-protocol, implement, satisfies?
  7d: Exhaustive match checking

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-04 15:43:57 +00:00

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