Function isObviousDocExample

lib/redact-engine.ts:221–223

* Doc-example heuristic: a credential span inside a tool fence still BLOCKS if * it looks like a LIVE credential (not an obvious placeholder/example). We only * downgrade-to-WARN spans that are clearly illustrative.

(span: string)

 * downgrade-to-WARN spans that are clearly illustrative.
 */
function isObviousDocExample(span: string): boolean {
  return isPlaceholderSpan(span);
}

// ── Proximity check ───────────────────────────────────────────────────────────