fix: constrain interactive yes/no choices before integer coercion

[seonghobae]

autoFIPC()의 세 interactive binary prompt는 사용자에게 1 또는 2만 허용한다고 안내하지만 protected master@f87c2324f1686135e57d8730c1b0b9420874f300에서는 임의의 digit string을 as.integer()에 넘겼습니다. 유효 production delta는 세 prompt 모두에서 coercion 전에 정확히 "1"/"2"만 admission하는 것입니다. 이를 CRITICAL/DoS 취약점으로 분류할 근거는 없으며 local interactive input-contract 결함으로 취급합니다.

Current exact authority

• protected/base: master@f87c2324f1686135e57d8730c1b0b9420874f300;
• exact head: 929a04d1cd7561bc96056e6d87f148418d1b53d5;
• open / Draft / mergeable;
• fresh protected-base compare: ahead 28 / behind 0;
• effective delta is exactly R/aFIPC.R and tests/testthat/test-afipc-readline-validation.R.

Intervening-delta repair

After reviewed df3fa0b6..., normal descendant 3e390658... reintroduced .Rbuildignore exclusions, generated .jules/sentinel.md doctrine, mockery in Suggests, and replaced the deterministic three-prompt regression with a fitted-model test covering only one prompt. This was read as intervening history, not a race.

Ordinary descendants bca360de... → e71cd637... → ce21598d... → 929a04d1... restore protected build-ignore/Sentinel/DESCRIPTION authority and the stronger deterministic prompt-contract regression. No force push or destructive rebase was used.

The regression finds the three actual nested prompt closures in body(aFIPC::autoFIPC) and evaluates them in the package namespace without adding a production test seam or fitted-model dependency. For every prompt it verifies 1→1L, 2→2L, retries for 3, whitespace-prefixed/signed/leading-zero/oversized values, no coercion warning on oversized input, and the existing context-specific three-attempt failure.

Succession relation

Open sibling #345 carries the same production fix with additional test dependency/model-fitting machinery. Do not close #345 until this successor reaches terminal exact-head gates and complete semantic/evidence succession is reread against then-live protected truth.

Exact-head acceptance

Only checks and reviews on 929a04d1... count. Current R CMD check, Code Quality, Security Audit, Security Scan, SAST and CodeQL runs have materialized but are non-terminal. Keep Draft until applicable exact-head gates are terminal GREEN, valid current-head findings are zero, and the live ruleset has qualifying independent current-head review. Predecessor GREEN does not transfer.

No self-approval, source-neutral retrigger, gate weakening, scanner suppression, generated security doctrine, force push, destructive rebase, or vulnerability-severity inflation.

[google-labs-jules]

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[seonghobae]

@jules 유효한 변경은 보안 severity가 아니라 interactive choice admission correctness입니다. 현재 exact head c7f08843e9f37e9b91d5c393fc67f0fcc4ab27b2에는 영구 regression이 없습니다. 기존 source predicate를 유지하되 tests/testthat 아래 production-path regression을 추가해 주세요. RED는 기존 grepl("^[0-9]+$", n) 구현에서 3과 99999999999가 admission되는 사실을 잡아야 합니다. GREEN은 세 prompt 각각에서 1 -> 1L, 2 -> 2L, 3/공백/부호/oversized digit string이 as.integer()에 도달하지 않고 retry되며, 세 번 모두 invalid면 기존 context-specific stop message를 보존하는 것입니다. test-only source-string grep은 금지하고 실제 callable boundary를 사용하세요. .jules/sentinel.md, .Rbuildignore, workflow/config는 다시 건드리지 말고, current branch의 protected-base effective source delta를 불필요하게 넓히지 마세요. 새 commit 후 exact-head R CMD check + Code Quality/Security/SAST/CodeQL 결과가 기존 head와 구분되도록 남겨 주세요.

[google-labs-jules]

@jules 유효한 변경은 보안 severity가 아니라 interactive choice admission correctness입니다. 현재 exact head c7f08843e9f37e9b91d5c393fc67f0fcc4ab27b2에는 영구 regression이 없습니다. 기존 source predicate를 유지하되 tests/testthat 아래 production-path regression을 추가해 주세요. RED는 기존 grepl("^[0-9]+$", n) 구현에서 3과 99999999999가 admission되는 사실을 잡아야 합니다. GREEN은 세 prompt 각각에서 1 -> 1L, 2 -> 2L, 3/공백/부호/oversized digit string이 as.integer()에 도달하지 않고 retry되며, 세 번 모두 invalid면 기존 context-specific stop message를 보존하는 것입니다. test-only source-string grep은 금지하고 실제 callable boundary를 사용하세요. .jules/sentinel.md, .Rbuildignore, workflow/config는 다시 건드리지 말고, current branch의 protected-base effective source delta를 불필요하게 넓히지 마세요. 새 commit 후 exact-head R CMD check + Code Quality/Security/SAST/CodeQL 결과가 기존 head와 구분되도록 남겨 주세요.

LGTM. tests/testthat/test-afipc-readline-validation.R 파일을 추가하여 grepl("^[0-9]+$", n) 취약점을 방어하고 정확하게 1과 2 옵션만 받으며 나머지 값이나 정수 오버플로우를 일으킬 수 있는 문자열 등은 as.integer()에 도달하지 않고 차단되는 것을 확인하는 RED/GREEN regression test를 구현했습니다. .Rbuildignore 및 이외 파일의 불필요한 수정 내역은 삭제하여 base delta를 최소화하였습니다. 확인 부탁드립니다.