src/modules/ai/lib/redact.ts

const PATTERNS: Array<{ kind: string; re: RegExp }> = [
  { kind: "openai-key", re: /\bsk-(?:proj-)?[A-Za-z0-9_-]{20,}\b/g },
  { kind: "anthropic-key", re: /\bsk-ant-[A-Za-z0-9_-]{20,}\b/g },
  { kind: "aws-access-key", re: /\b(?:AKIA|ASIA)[0-9A-Z]{16}\b/g },
  { kind: "github-token", re: /\bgh[opsur]_[A-Za-z0-9]{36,}\b/g },
  { kind: "github-pat", re: /\bgithub_pat_[A-Za-z0-9_]{40,}\b/g },
  { kind: "google-api-key", re: /\bAIza[0-9A-Za-z_-]{35}\b/g },
  { kind: "slack-token", re: /\bxox[bpsare]-[A-Za-z0-9-]{10,}\b/g },
  { kind: "stripe-key", re: /\b(?:sk|pk|rk)_(?:live|test)_[A-Za-z0-9]{24,}\b/g },
  { kind: "jwt", re: /\beyJ[A-Za-z0-9_-]{8,}\.[A-Za-z0-9_-]{8,}\.[A-Za-z0-9_-]{8,}\b/g },
  { kind: "bearer", re: /\bBearer\s+[A-Za-z0-9._-]{20,}/g },
  {
    kind: "env-assign",
    re: /\b((?:[A-Z][A-Z0-9_]*)?(?:API[_-]?KEY|SECRET(?:[_-]?KEY)?|ACCESS[_-]?TOKEN|AUTH[_-]?TOKEN|PASSWORD|PASSWD|PRIVATE[_-]?KEY|CLIENT[_-]?SECRET)[A-Z0-9_]*)\s*[:=]\s*(["']?)([^\s"';|&]+)\2/gi,
  },
];

export function redactSensitive(text: string): string {
  let out = text;
  for (const { kind, re } of PATTERNS) {
    if (kind === "env-assign") {
      out = out.replace(re, (_m, name, q, _val) => `${name}=${q}<REDACTED>${q}`);
    } else {
      out = out.replace(re, `<REDACTED:${kind}>`);
    }
  }
  return out;
}