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Implement hosted Conversion Attestation publication (WP-0006-T06)

Browse source 
migrations/0003_attestations.sql: one row per Phase, no UPDATE/DELETE
grant for trf_app (a published attestation is permanent).

src/target_revenue/attestation.py: publish_attestation() is idempotent
(existing row returned unchanged, never regenerated) and derives
conversion_timestamp from the ledger itself via _find_conversion_prefix(),
which finds the earliest prefix where the fold reaches Outstanding
Target = 0 rather than trusting entries[-1] or wall-clock publish time -
so a later unrelated entry can never change an already-converged Phase's
recorded conversion moment. Raises NotConvertedError rather than
fabricating a conversion. Reuses conversion.generate_attestation()
unchanged. Guarded the psycopg import behind TYPE_CHECKING so the pure
helper stays testable under plain system Python.

service/app.py adds GET /phases/{id}/attestation (unauthenticated,
publish-on-first-observation).

tests/test_attestation.py (3 tests, no Docker/Postgres) proves the
earliest-crossing behavior. 6 new Docker-gated tests in
test_ledger_hosting.py cover pre-conversion 404, the core
legal-technical property that /metrics facts/calculations/forecasts
are identical whether or not /attestation was ever called, one-time
publication, signature verification, and DB-level UPDATE/DELETE
rejection.
This commit is contained in:
tegwick 2026-07-29 21:50:02 +02:00
parent caa98ead3b
commit 28f0f429b2
7 changed files with 341 additions and 3 deletions
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README.md
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@ -78,7 +78,7 @@ The concept's §13 now defines a **Global Contingency Share Determination Rule**
| [TREV-WP-0003](workplans/TREV-WP-0003-normative-core-extraction.md) | Extract stable normative core docs — **finished**, reviewed and accepted 2026-07-29 |
| [TREV-WP-0004](workplans/TREV-WP-0004-global-jurisdiction-research.md) | Global jurisdictional research backing the License/CUA candidates — **finished**, T10 synthesis accepted 2026-07-29 with alpha/beta working defaults (full legal review deferred until out of beta — see `SCOPE.md` §1) |
| [TREV-WP-0005](workplans/TREV-WP-0005-enforcement-network-research.md) | Enforcement Network legal feasibility research — **finished**, T10 synthesis accepted 2026-07-29 on the same alpha/beta basis (Japan's Article 12 risk remains explicitly unresolved) |
| [TREV-WP-0006](workplans/TREV-WP-0006-trust-service-implementation.md) | Hosted Trust Service reference implementation (PRD Phase 4b) — active; T01 (PRD), T02 (ADR-0002, accepted), T03 (registries), T04 (Ledger append API), T05 (Metrics) done; T06 (Conversion Attestation) next |
| [TREV-WP-0006](workplans/TREV-WP-0006-trust-service-implementation.md) | Hosted Trust Service reference implementation (PRD Phase 4b) — active; T01 (PRD), T02 (ADR-0002, accepted), T03 (registries), T04 (Ledger append API), T05 (Metrics), T06 (Conversion Attestation) done; T07 (multi-repo onboarding) next |
| [TREV-WP-0007](workplans/TREV-WP-0007-degeneration-policy-and-canonical-profiles.md) | Degeneration policy + canonical monetization profile catalog — active, not yet started |
| [TREV-WP-0008](workplans/TREV-WP-0008-governance-and-pilot-rollout.md) | Governance formalization + pilot rollout across `coulomb-loop`/`net-kingdom`/`helix-forge`/`railiance-*` — active, not yet started; real Phase declarations gated behind T05 |