zu-checks 0.4.0

Zu built-in checks: detectors (empty, error, js-shell, embedded-widget, bot-wall, captcha, human-gate) + validators (schema, grounding)

zu-checks

The built-in checks that ship with the Zu base runtime — two stdlib plugin kinds in one package:

• detectors (zu_checks.detectors) — empty, error, js-shell, bot-wall. Inspect an observation and return a Verdict; the severity drives the loop (ESCALATE climbs the tier ladder, TERMINAL ends the run).
• validators (zu_checks.validators) — schema (does the result fit the requested shape?) and grounding (does every extracted value actually appear in retrieved content? — the anti-hallucination check).

They're packaged together because both are pure-stdlib (schema adds only jsonschema) and always present in the base — unlike the adapter packages (zu-providers, zu-tools, zu-backends), whose separation carries distinct heavy optional dependencies. All register via the standard zu.detectors / zu.validators entry-point groups, exactly as a third-party check would.