fix(v4): a manage request with too few values, or no room, is refused (#169)

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v4_manage_serve took its arguments with v4_dstack_pop and never checked the
stack's depth: a request with too few values acted on stale ring values, and
one whose results did not fit dropped the oldest silently -- around the D-16
guards. Now each request's arity (manage.h) is checked first: fewer values
than it takes, or no room for what it leaves, is error 12 with the stack as it
was -- as a block request is refused (blocks.c).

test_manage.c, written first and seen to fail (12 of 13 requests at both cell
widths; NODE-BORN passed only because the stale value read was below 1): every
request with one value fewer than it takes, and NODE-ME and CAPSULE-CELL on a
stack with no room -- refused, the stack unchanged. After: 78 checks, 0
failures at 32 and 64 bits; all v4 tests at 64 bits, 40 programs, 1,871,313
checks, 0 failures (logs/20261112-152602/v4-test).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017RzZgrf7V7Zk2iczBXDRbm

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Claude

2026-11-12 15:26:02 +00:00

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logs/20261112-152602/v4-test/v4-test-64.log

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