# v0.104.0: Extension conformance and final feature freeze

> **Status:** Released (2026-09-11)
> **Scope:** Medium
> **User promise:** *"Other PostgreSQL tools can build on a small, stable contract."*
> **Blocked by:** [v0.103.0](v0.103.0.md)
> **Source:** [September 2026 assessment](../plans/pg-trickle-assessment-and-pre-1.0-roadmap.md)

## Theme

Prove and freeze the public Graph V1 and Delta V1 contracts. Keep coordination,
change consumption, and infrastructure-specific delivery as separate concerns.

## Work

- Package independent Graph V1 and Delta V1 conformance suites.
- Admit Graph V1 and Delta V1 as stable after the packaged public-SQL suite
  passes.
- Ship a minimal reference coordinator and output-delta consumer that use only
  public contracts.
- Verify capability negotiation, typed batches, cursors, acknowledgement,
  invalidation, retention, resnapshot, and recovery across upgrades.
- Define owner permissions for retained deleted data and every lifecycle
  transition.
- Clarify the supported boundaries with pg_tide, dbt, and optional source
  integrations.
- Retain the experimental Graph setting as a no-op for upgrade compatibility,
  then freeze the API, catalog, GUC, metric, error, package, and upgrade
  contracts.

## Exit criteria

- [ ] The reference implementation and one independent coordinator pass the
      Graph V1 suite, and the reference implementation and one independent
      consumer pass the Delta V1 suite, without private catalog or buffer
      access.
- [ ] Conformance covers rollback, replay, invalidation, slow consumers, schema
      changes, restore, clone, permissions, and upgrades.
- [ ] Output-delta consumers add no work beyond the documented disabled-overhead
      budget when none are registered.
- [ ] Every frozen contract has compatibility and recovery documentation.
- [ ] CI rejects new features after this release.

## Scope control

Do not add a connector marketplace, stable Rust ABI, or remote delivery
service. Finish the contracts introduced in v0.93.0 through v0.95.0.

## Delivered

The release includes public-SQL conformance tests, minimal reference client
helpers, stable capability discovery, external graph provenance, and the
v0.103.0 to v0.104.0 package and upgrade surfaces. See the [full
implementation details](v0.104.0.md-full.md).