target-revenue/workplans/TREV-WP-0012-phase-provenance-and-policy-modeling.md

id	type	title	domain	repo	status	owner	topic_slug	created	updated
TREV-WP-0012	workplan	Phase provenance, ledger reference, and degeneration-policy modeling	infotech	target-revenue	active	claude	infotech	2026-07-30	2026-07-30

Phase provenance, ledger reference, and degeneration-policy modeling

Triggered by using the Control Plane UI for the first time (WP-0009-T04): the Phase registration form asked for a bare source_revision with no repo attribution, a hand-typed ledger URI, and an opaque degeneration_policy id with no way to see what it actually specifies. These aren't UI bugs — the Phase Manifest schema (schemas/phase_manifest.schema.json) itself doesn't yet carry the structure the UI would need to show any of this properly, and FR-11 (Successive Phases, specs/ProductRequirementsDocument.md) already commits the framework to base-release/prior-Phase provenance that the schema has never modeled either.

This is a modeling-only workplan: it produces documents (a use-cases spec and a discussable spec addendum) and decisions, not schema or UI changes. Implementation follows in later workplans once the addendum is reviewed (T05).

id: TREV-WP-0012-T01
status: todo
priority: high

Write the use-cases document, as its own spec file (not folded into specs/PhaseManifestSpecification.md) — working title specs/PhaseLifecycleUseCases.md. Cover, systematically, at minimum:

1. First Phase ever declared for a repo (the three real pilot candidates: net-kingdom, railiance-vergabe-teilnahme, info-tech-canon).
2. A successive Phase on a repo that already had an earlier, converted Phase (FR-11) — including what "base release" means when the prior Phase's Milestone Release is itself the base.
3. Operator registers a Phase; Contributor proposes a Development Credit; Operator/Admin reviews (already built, WP-0009 — include for completeness/cross-reference, not to redesign it).
4. Remission Credit accrual over time under the active degeneration policy — note as an open gap for WP-0013, not solved here.
5. Conversion Event fires, Attestation published — note as a UI gap for WP-0014.
6. Monetization Extension registration and canonical-status review — note as a UI gap for WP-0014.
7. Breach/Compliance Record publication — note as a UI gap for WP-0014.
8. A second Licensor tenant besides binky onboards.
9. An external auditor verifies a Phase's evidence package offline, without needing to trust or even reach the Control Plane UI (FR-8/FR-9 — call out explicitly that this use case has no UI surface by design, so it doesn't get silently forgotten as "not yet built").

id: TREV-WP-0012-T02
status: todo
priority: high
human_accept_required: true

Decide repo identification and Phase-provenance fields (human gate). Per direction already given: identity rests on the Forgejo instance ("home hub") plus the repo's own stable id within that instance, and the Forgejo service URI and repo name are also retained (not derived) — so a rename or instance move stays repairable rather than silently breaking a Phase's provenance link. Concretely decide and record:

• Field names/shape for milestone_release: a hub identifier, a Forgejo-internal repo id, the Forgejo service URI, and the repo name (owner/repo slug) — four values, not one string.
• Whether this is required or recommended for Stage 0 (precedent: longstop_at moved from recommended to required under a working default, specs/OpenQuestions-WorkingDefaults.md Q8).
• How a successive Phase (use case 2 above) references its base — a trsl:phase:... id, and what a first-ever Phase puts there instead (null, or an explicit "no prior Phase" marker — decide which is cleaner for fold/validation logic downstream).
• Whether any of this is retroactively backfillable for the three existing pilot-candidate example manifests, or only required going forward.

id: TREV-WP-0012-T03
status: todo
priority: high
human_accept_required: true

Decide the degeneration-policy / calculation-model spec-file convention (human gate). Per direction already given: every policy or calculation model (this includes the Development Effort Calculator's own Candidate A formula, specs/DevelopmentEffortCalculatorConcept.md, not just degeneration policies) corresponds to a markdown specification file with a simple, distinct name, an id, and a revision — built on git's own mechanisms (commit hash and/or file path, no new versioning infrastructure). Concretely decide:

• Where these spec files live (likely already specs/*.md — decide whether a dedicated subdirectory or naming convention is needed so a policy id like trsl:policy:linear-longstop-v0 maps unambiguously to one file).
• What "id and revision, built on git internals" means precisely — e.g. the policy id embeds the file path and a pinned commit hash, or the file's own frontmatter carries an id/revision pair that a human commits to alongside code changes (check how the-custodian/state-hub already present read-only reference-documentation views linked by id, per the user's explicit steer to reuse that pattern rather than invent a new one, and follow whichever mechanism is actually in use there).
• How the Control Plane UI links a policy id shown next to a Phase to a read-only rendered view of that spec file — no in-UI editing, consistent with every other governance-action pattern in this project.
• Whether this same convention should also cover the six canonical monetization profiles (specs/CanonicalMonetizationProfiles.md) for consistency, or is scoped to degeneration policies and calculators only for now.

id: TREV-WP-0012-T04
status: todo
priority: medium
human_accept_required: true

Decide the ledger's UI treatment (human gate). Per direction already given: keep the ledger field in the schema — not as something the standard Phase view surfaces, but as an internal reference reachable only via an explicit drill-down/details action. This is intentional groundwork for eventually supporting more than one ledger per Phase (federation, specs/ProductRequirementsDocument.md NFR-3), not just a display preference. Decide:

• What the drill-down actually shows (the raw ledger URI/reference plus a link to GET /phases/{id}/ledger's live data, or something more), and where it lives in the Control Plane's navigation (a "details" link on phase_detail.html rather than a top-level field).
• Whether the Phase registration form still needs a ledger input at all going forward, or whether the Trust Service should compute/assign it automatically now that it is always the ledger's host in Stage 0 — distinct from the schema question of whether the field stays.

id: TREV-WP-0012-T05
status: todo
priority: high

Draft the spec addendum reflecting T01–T04's accepted decisions, for review before any implementation — schema changes (schemas/ phase_manifest.schema.json), the policy-spec-file convention, and the Control Plane UI changes it implies. Do not implement anything from this task; it produces a reviewable document only. Once accepted, file the implementation work as its own workplan(s), consistent with how WP-0009 and WP-0010 were split from a single combined plan.

Related gaps spun out as their own workplans

Use cases 4, 6, and 7 above are bigger than a modeling exercise — they are missing implementation, not missing documentation — and are tracked separately rather than folded in here:

• workplans/TREV-WP-0013-remission-credit-automation.md — use case 4.
• workplans/TREV-WP-0014-control-plane-extensions-breach-attestation-ui.md — use cases 5, 6, 7.

Use case 8 (second Licensor tenant onboarding) is judged small enough to stay under workplans/TREV-WP-0008-governance-and-pilot-rollout.md rather than warrant its own workplan — revisit that call if it turns out to need real design work once a second tenant is actually on the table.