R7RS compat library + 45-test suite (27 passing, 17 need lib load fix)
lib/r7rs.sx: guard/with-exception-handler macros, error objects
(make-error-object, error-object?, error-message, error-object-irritants),
R7RS aliases (car/cdr/cadr/null?/pair?/procedure?/boolean=?/symbol->string/
number->string/string->number), string->symbol.
spec/tests/test-r7rs.sx: 9 suites covering call/cc (7), raise (4),
guard (5), with-exception-handler (1), error-objects (4), multi-map (6),
cond=> (4), do-iteration (4), r7rs-aliases (10). 27/44 pass — the 17
failures need r7rs.sx auto-load in the test runner (currently commented
out pending transpiled evaluator hang investigation).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
giles
d4244b47bf