STATE - Practice Attempt Execution

Current truth

Attempt flow is baseline-locked for reliability: low-friction completion, answer safety, and deterministic submit behavior.

Rules

• Attempt modes:
  • untimed for normal practice (default),
  • timed for simulation/full-test style attempts.
• Entry contract:
  • attempt starts only when required routing metadata is valid.
• Draft safety:
  • answers are continuously saved during attempt,
  • local fallback keeps progress if network is unstable,
  • re-entry to unfinished attempt resumes latest valid draft.
  • unfinished untimed drafts are retained for 7 days since last activity.
  • timed drafts are valid only within active timer window.
• Submit review:
  • show lightweight answered/unanswered summary before submit,
  • keep submit non-blocking even with unanswered items.
  • for multi-section attempts, section-level breakdown is expandable (optional view).
• Submit integrity:
  • use idempotent submit guard to prevent double-finalization.
• Failure and retry:
  • failed submit keeps attempt state intact,
  • user can retry without losing answers,
  • clear status states: saving/submitting/retry-needed.
  • transient submit failure uses auto-retry up to 3 attempts.
  • after auto-retry exhausted, keep manual retry and show support CTA.
• Timed expiration:
  • timed mode uses authoritative countdown,
  • timer continues in background/no manual pause,
  • on expiry, follow timeout-submit path and transition to result.
• Result pipeline boundary:
  • only successful submit finalizes attempt for result pipeline.
• Metrics attribution:
  • streak/progress uses submitted_at as source of truth.

Decision trace

• DEC-0069
• DEC-0068
• DEC-0035
• DEC-0051