Add strict typing mode + 139 new tests: 749/749 passing
Strict mode (spec/eval.sx):
- *strict* flag, set-strict!, set-prim-param-types!
- value-matches-type? checks values against declared types
- strict-check-args validates primitive call args at runtime
- Injected into eval-call before apply — zero cost when off
- Supports positional params, rest-type, nullable ("string?")
New test files:
- test-strict.sx (25): value-matches-type?, toggle, 12 type error cases
- test-errors.sx (74): undefined symbols, arity, permissive coercion,
strict type mismatches, nil/empty edge cases, number edge cases,
string edge cases, recursion patterns
- test-advanced.sx (39): nested special forms, higher-order patterns,
define patterns, quasiquote advanced, thread-first, letrec, case/cond
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
giles
8f146cc810