ci: wire STRUCT-07c smoke test into model-ci workflow

[emmanuel-a-otchere]

ci: wire STRUCT-07c smoke test into model-ci workflow

What this PR is

Adds a second job (catalog-smoke-test) to .github/workflows/model-ci.yml that runs the cross-repo smoke test (scripts/check_catalog_index_matches_model.py, landed in PR #11) on every push and PR.

What the new job does

1. Pre-populates the cache by curl-ing each known conformant adopter's CATALOG.yaml from main into .cache/cross_repo_consumer/. CI uses the consumer's offline path (not live fetches) so a raw.githubusercontent.com CDN outage does not falsely fail the smoke test. If a fetch fails, the cache file is absent and the smoke test surfaces that as a FAIL (the adoption has regressed).

2. Runs the smoke test with --offline:

   • Hard failures (model missing, fetch error, schema broken) → exit non-zero → fail the job.
   • Soft warnings (status drift) → print to the action log → do not block CI → operator triages them.

3. Adds .cache/ to .gitignore so the cache directory doesn't pollute git status on local dev.

Distribution

Bucket	Count	Notes
Workflow changes	1	.github/workflows/model-ci.yml (+47 lines)
Gitignore updates	1	.gitignore (+1 line)
New jobs	1	catalog-smoke-test

The consumer triangle, post-this-PR

Job	What it validates
validate-model (existing)	Model is internally consistent (entity shapes, layer assignments)
catalog-smoke-test (NEW)	Catalog content matches model status
validate-consumer (separate workflow)	Catalog's metamodel-pointer.yaml matches pinned model

Live verification

Local simulation of the CI step:

$ mkdir -p .cache/cross_repo_consumer
$ for repo in dea-catalog-processes dea-catalog-business-capabilities \
              dea-catalog-digital-business-service-factory \
              dea-catalog-stakeholders; do
    curl --silent --location \
      "https://raw.githubusercontent.com/technehub-labs/${repo}/main/CATALOG.yaml" \
      -o ".cache/cross_repo_consumer/${repo}@main.yaml"
  done

$ PYTHONPATH=scripts python3 scripts/check_catalog_index_matches_model.py \
    --model model/opendeam-model.yaml \
    --cache-dir .cache/cross_repo_consumer \
    --offline

INFO: 54 model entities; 4 reference known adopters (...)
result: 0 failure(s), 0 warning(s)

(Clean after PR #12's dea:entity-business-process upgrade; would have surfaced the drift without that upgrade.)

Verification

• yaml.safe_load(.github/workflows/model-ci.yml): parses ok.
• Local simulation: 0 failures, 0 warnings.
• Dash sweep on new prose: clean.
• Secret scan: 0.
• git diff --check: clean.

Sequencing

Slice	Status
STRUCT-01 + 06a + 06b	Merged
STRUCT-02..05 (four adopters)	Merged
STRUCT-07a (consumer module)	Merged (dea-metaframework#19)
STRUCT-07b (viewer integration)	Merged (#164 + #22)
STRUCT-07c (AF smoke test)	Merged (dea-architecture-framework#11)
BP status upgrade	Merged (#12)
Wire STRUCT-07c into CI	This PR

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