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target-revenue/specs/policies/linear-longstop-v0.md
tegwick 3064c0fe0c Go-live T05 + WP-0013/0014: first Phase and Control Plane completion 
Accept WP-0008-T05 for trsl:phase:info-tech-canon-service-surface
(history/260805-T05-GoLive-info-tech-canon.md). Finish WP-0013 remission
automation and WP-0014 extension/breach/attestation Control Plane UI.
Update SCOPE, README, and pilot-candidate notes for pilot Stage 1.
2026-08-05 16:00:06 +02:00

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policy_id title
trsl:policy:linear-longstop-v0@1.0 Linear Longstop v0

Linear Longstop v0

Adopted 2026-07-29 (workplans/TREV-WP-0007-degeneration-policy-and-canonical-profiles.md T02, maintainer-accepted): confirmed as the v1 norm for the first pilot cohort, not merely a Stage 0 pilot placeholder.

Definition

  • Remission accrues only by time toward a declared Longstop Date (specs/OpenQuestions-WorkingDefaults.md Q8).

  • Between Phase activation t0 and Longstop tL,

    R(t) = T0 × clamp((t − t0)/(tL − t0), 0, 1)

    with discrete ledger remission-credit entries computed on a published schedule (e.g. daily or monthly UTC), or a single full remission at longstop for minimal implementations.

  • Development Credit does not change the remission schedule in v0 (no progress-sensitive boost/pause).

Status

Automated as of WP-0013 (src/target_revenue/remission.py):

  • Pure cumulative formula: cumulative_remission(T0, t0, tL, as_of).
  • Hosted apply writes the delta max(0, R(as_of) − Σ policy remission-credit already on the ledger).
  • t0 = Trust Service phase_manifests.registered_at (no separate activated_at manifest field in Stage 0).
  • Cadence: monthly UTC (1st 00:00) for scheduled batch (POST /remission/run); on-demand via POST /phases/{id}/remission or Control Plane "Apply policy remission now".
  • Actor: Licensor credential labeled system:policy-engine (not a human token).
  • Re-runs at the same as_of are no-ops (idempotent by cumulative delta).

Superseded / next iteration

specs/TargetDegenerationPolicyResearch.md (T01) proposes a candidate trsl:policy:progress-paused-longstop-v1 (a 90-day rolling "quiet period" pause on Remission Credit during active Development Credit periods), research complete but not adopted. Explicitly recommends not adopting a diversity-of-payers factor (no gaming-resistant signal exists yet). Named as the next iteration, to be revisited once real pilot Development Credit data exists — not required before pilot Phases proceed under v0.