requirements-to-acceptancelisted

# Requirements To Acceptance Use before implementation when the outcome is ambiguous, user-facing, cross-functional, security-sensitive, operational, or likely to cross module boundaries. ## Define the contract Keep only what changes engineering decisions: 1. State the intended observable outcome and important non-goals. 2. Identify the actor, resource, and intended authority when identity or permissions matter. 3. Map the affected surfaces only: user/runtime journey; state (DB/files/config/migration); runtime (process/user/PATH/env/executable/service); delivery (install/upgrade/reconcile/restart/rollback); external contract; and final consequential credential/permission. 4. For a non-trivial change, ask: **If this ships and causes a defect, what are the most plausible reasons?** Retain only credible answers that change the affected surfaces, acceptance criteria, or verification. Do not create a mandatory premortem section or speculative risk list. 5. Express acceptance as user/system-observable behavior and meaningful failure behavior. Prescribe implementation only for a real architecture, security, compatibility, or operational invariant. 6. Name the evidence that will prove the contract before selecting the implementation or red test. For security, identity, credential, account/repository selection, installation, or permission changes, trace: `actor -> authentication -> selection -> durable state -> credential -> target -> operation` The authority at the final conse