# Fixture-only ContextGuard advisory-foundations prompt

This synthetic candidate prompt represents a future ContextGuard-assisted side using cache layout lint, core-vs-deferred tool schemas, artifact receipts, and claim-safe telemetry. It is dry-run-only and not a hosted API token/cost savings claim. A real run must preserve exact retrieval or re-expand paths for omitted context and compare only provider-measured matched successful tasks.

Byte reductions, cache-hit predictions, local latency, char/4 token proxies, and receipt counts are diagnostic only until primary provider token/cost telemetry and shifted external work are measured.

Metric checklist for real replacements: tokens_per_successful_task, total_cost_with_shift_usd, external_cost_usd, matched_successful_task evidence, 10%p failure-rate guardrail, and proxy-byte caveat.