[spfuzzylink]

A busy inference worker should wait before claiming work, or leave it for a ready worker. It should still return a completed exact result without waiting for model capacity.

This adds execution.NewDispatcher with bounded pending calls, admission waiting, explicit same-runtime nodes and optional read-only peer-result polling. It advances only on proven pre-claim deferral. Pending or uncertain work is never regenerated or handed off. The existing coordinator, exact identities, source expiry, budgets and quality checks keep their behavior.

The release also includes an opt-in bounded applicability assessment and adopted-update rejection guard. Free-form reuse remains experimental and unqualified; it is not enabled by default. The original #41 accuracy and whole-task savings goals continue in #44. #41 will be closed as superseded, not as a passing quality result. All 618 prior attempts, seven usage-unknown outcomes and 31 unfinished fences remain recorded.

Validation:

• Full Go race/vet and Python checks, including exact reuse, recovery, scope and accounting regressions.
• Fifteen dispatcher test groups, ten independent adversarial controls repeated three times, and an independent lost-CAS/peer-reuse regression.
• Model-free HTTPS walkthrough: pressured node generates nothing; ready node handles the task once; another scoped client reuses the exact result under pressure with zero new tokens. Scripted providers on one physical host, not a model-quality or physical-cluster benchmark.
• Explicit release allowlist now includes the new guide, complete examples and retained diagnostic evidence; archive tests execute that evidence verifier from packaged files.
• Four native platform CI, source-container, isolated plugins and live self-hosted Langfuse checks must pass for the exact release commit.

Paid fallback is disabled; provider API spend for this work is $0. Questlock applied checked documentation revisions without model calls. This does not measure the surrounding Codex chat's allowance or establish invoice savings. No active client configuration was changed.

Refs #41. Follow-up: #44.