giles 3d8937d759 spec: string ports (open-input-string/open-output-string/read-char/etc) ...

Phase 14: port type + eof-object. Input ports track _pos cursor; output ports
accumulate _buffer. All 15 port primitives in spec/primitives.sx (stdlib.ports
module), platform.py (JS), and 39/39 tests in spec/tests/test-ports.sx.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-05-01 12:38:08 +00:00

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