"""Rivet skill chips — Kintsugi BaseSkillChip subclasses.

code_analysis    read and trace actual campus source (evidence gathering)
migration_safety classify SQL against the shared-db constraint + schema
security_review  audit findings + auth impact detection
test_runner      verify generated code (tsc / npm test) instead of asserting
discipline_gate  final gate: belief checks + confidence grading + block/warn
"""