# First consumer integration

FEP-WP-0008 T01/T02 owns this bounded handoff; no consumer is enrolled by this file.
Use the common instruction owner for the selected repository. Do not install a fleet
mandate, reopen a finished task, or invent product work to manufacture adoption.

## Eligibility

A real, open frontend task must need a decision about shared edits, offline recovery,
navigation/rendering, interaction or feature boundaries. The consumer keeps its own
implementation authority. A deployment repair or documentation-only inspection of
this pattern repository is not an external frontend use. Unsupported contexts should
produce an explicit no-match decision, not a forced pattern selection.

## Local lookup and closeout helper

The local helper is available before hosted federation enrollment. From the reference
checkout, `python3 scripts/reference_consume.py --version 0.1 lookup --candidate CAND-0007`
returns a verified candidate with exact corpus/packaging citation pins. Force and
responsibility filters narrow research leads; they do not make the consumer decision.
Read the linked contracts and their alternatives. Preserve abstention and unsupported
needs; do not turn a matching force into a complete architecture claim.

The [decision-input example](decision-input.example.json) is explicitly synthetic,
with dummy provenance. It is a format example, never an eligible real use. For an
actual eligible task, the consumer creates its own JSON with stable use/event IDs,
explicit `kind`, full consumer commit, task/producer/run references, constraints,
considered/selected IDs, action/reason/artifact reference and an observable outcome
expectation. Unknown is the default outcome; reported helpfulness requires observation
and evidence locators and still awaits independent verification. No private code,
credentials or transcript belongs in the input.

From that consumer's checkout, using the path to the reference tool:

```bash
python3 /path/to/frontend-patterns/scripts/reference_consume.py --version 0.1 receipt \
  --input decision.json --output research/pattern-use/use-01/event-01.json
```

The helper validates input and the frozen release, fills its version/packaging/digest
pins, exclusively writes a new source-relative file, and prints the exact path/SHA-256
entry for the consumer's schema-v1 receipt index. JSON is valid YAML for activity-core's
existing collector. Without `--output`, it prints the event for inspection. It never
overwrites a receipt, enrolls a source or supplies collector-verified origin.

A later outcome uses the same `use_id`, a new `event_id` and the preceding file's
`previous_event_sha256`. Retain the earlier event/index entry; chronology and predecessor
integrity are checked by the existing collector. The helper preserves a supplied
digest but does not independently verify the event chain or outcome artifact.

Consumer owners still integrate invocation into their normal closeout hook, commit the
receipt/index and arrange authorized enrollment through WP-0008. This preparation does
not establish hosted discovery, automatic hook installation, real value or the loop's
delayed-artifact refresh. `make consumption-test` includes disclosed synthetic cases
and an integration check against the sibling activity-core validator when its Python
environment is present; release acceptance requires that check to run without a skip.

## Short planning and closeout instruction

> For eligible frontend architecture work, query
> `capability.infotech.frontend-pattern-language` through hosted reuse-surface.
> Read START.md and the full applicable contracts in the pinned reference release.
> Record its version, packaging revision and manifest digest with selected/rejected
> CAND IDs, task constraints, alternatives and unmet conditions in the task's decision
> note. At closeout, emit an immutable PatternUseReceipt event and index it with its
> SHA-256; unknown outcome is valid. At the first linked test/review/incident, append
> an outcome event with the preceding event digest. Never edit the earlier receipt,
> invent helpfulness, or treat model judgment as observed user benefit.

The [receipt template](../templates/PatternUseReceipt.yaml) and
[index/enrollment contract](README.md) define exact fields. Pin the packaging
revision in [releases.json](../reference/releases.json), not the latest research
HEAD. Read [unsupported contexts](../reference/0.1/README.md) before selecting.

## Acceptance

Before adding an actual consumer to `sources.json`, verify its published receipt
index and immutable event hashes at a concrete revision. Check the source through
activity-core's existing validator/collector. Keep a decision-only unknown outcome
unknown until a linked outcome arrives. Fixture positive/negative paths test the
collector; they do not satisfy real-use acceptance. Enrollment is limited to the
existing allowlist and collection bounds in the runbook.

Hosted registration currently needs the routed OpenBao write credential. Public
index publication is verified, but lookup/registration and a real consumer receipt
must be evidenced separately. Do not infer discovery success from this instruction.