aFIPC

Automated Fixed Item Parameter Calibration (FIPC) for IRT test linking.

This package contains the original graduate-school implementation used to produce accurate fixed-item linking results. The current maintenance goal is to preserve numerical behavior while modernizing repository operations (documentation, CI, and dependency hygiene).

What this repository contains

• R/aFIPC.R: core autoFIPC() implementation
• DESCRIPTION, NAMESPACE, man/: package metadata and generated docs
• packrat/: historical dependency lock/vendor directory
• .github/workflows/: CI/security automation

Development status

• Algorithmic core is legacy but trusted for historical outputs.
• Operational guardrails are now maintained via GitHub Actions and Dependabot.
• Legacy packrat bootstrap is opt-in via AFIPC_ENABLE_PACKRAT=true.
• Broken host-specific packrat/lib-R symlinks were removed for portable builds.
• Architectural and agent operation docs are available in:
  • ARCHITECTURE.md
  • AGENTS.md
  • CLAUDE.md
  • CONTRIBUTING.md
  • .github/SECURITY.md

Collaboration workflow

• Pull request template: .github/PULL_REQUEST_TEMPLATE.md
• Issue templates: .github/ISSUE_TEMPLATE/
• Code ownership: .github/CODEOWNERS
• Code quality checks: .github/workflows/code-quality.yml
• Security checks (private-safe): .github/workflows/security-audit.yml
• Secret-scan policy config: .gitleaks.toml
• CodeRabbit command reference: docs/coderabbit/review-commands.md
• Maintainer operations runbook: docs/operations/maintenance-runbook.md

Local package check

R_PROFILE_USER=/dev/null Rscript -e \
'install.packages(c("rcmdcheck"), repos="https://cloud.r-project.org")'
R_PROFILE_USER=/dev/null Rscript -e \
'rcmdcheck::rcmdcheck(args = c("--no-manual", "--as-cran"), error_on = "warning")'

Maintenance policy

• Prefer preserving equation/calibration behavior over refactoring.
• Avoid silent behavioral changes in autoFIPC() without explicit regression evidence.
• Keep CI green on supported runners and keep Actions pinned/updated.