fix(input): bound interactive menu choices before coercion

[seonghobae]

문제

autoFIPC()의 세 개 대화형 1/2 선택 경로가 ^[0-9]+$를 통과한 임의 길이 숫자를 as.integer()로 넘기고 있었습니다. 메뉴 계약상 허용값은 1과 2뿐이므로, 그 밖의 숫자를 받아들였다가 NA coercion이나 후속 분기 오류에 맡길 이유가 없습니다. 이는 입력 계약/가용성 결함입니다. 별도 exploitability 근거 없이 MEDIUM 보안 취약점이나 정수 오버플로 공격으로 과장하지 않습니다.

현재 causal repair

• common-item 확인, old-form BILOG prior, new-form BILOG prior의 대화형 입력을 모두 정확한 ^[12]$로 제한합니다.
• 기존 Jules 생성 테스트가 production을 호출하지 않고 동일 정규식 자체만 재검사하던 문제를 normal descendant에서 제거했습니다.
• tests/testthat/test-readline-validation.R은 exported autoFIPC()를 실제 호출합니다. 함수의 lexical environment에만 interactive()와 readline() 대역을 주입해 production prompt 경계를 지나가며, 3, 매우 긴 숫자, 10이 세 번 거절된 뒤 bounded failure가 되는지와 정확한 2가 한 번에 허용되어 다음 제품 분기까지 도달하는지를 검증합니다.
• 이번 국소 메뉴 판단을 repository-wide 보안 교리로 일반화하던 .jules/sentinel.md 추가분은 protected master의 canonical blob으로 복원했습니다.

exact head / evidence

• protected base: master@f87c2324f1686135e57d8730c1b0b9420874f300
• exact head: 4b38d796e411e4e87c5bf8e9d0ea2f1c65a589fe
• Draft / mechanically mergeable
• exact-head R CMD check, Code Quality, Security Audit, Security Scan, CodeQL PR, SAST Semgrep가 새 head에서 queued이므로 GREEN이나 merge-ready를 주장하지 않습니다.

후속 gate는 동일 exact head에서 실제 R CMD/testthat 실행이 위 production-path regressions를 통과하고, 적용되는 security/quality/review checks가 terminal-success인지를 확인하는 것입니다. predecessor 결과, self-approval, no-op retrigger, gate weakening은 사용하지 않습니다.

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📥 Commits

Reviewing files that changed from the base of the PR and between f87c232 and 4b38d79.

📒 Files selected for processing (3)

• .jules/sentinel.md
• R/aFIPC.R
• tests/testthat/test-readline-validation.R

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