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* fix(integrations): validate cached catalog shape before returning it
The catalog cache-read branch returned json.loads(cache_file) directly, skipping
the shape validation the fresh-fetch branch enforces (dict root + 'integrations'
mapping). A poisoned or older-format cache (e.g. {"integrations": []}) was
therefore returned as-is and later crashed with 'AttributeError: list object has
no attribute items' when the caller iterated integrations. Validate the cached
object the same way; the raised ValueError is already caught by the surrounding
handler, which drops the corrupt cache and refetches from source.
Test: a fresh-but-mis-shaped cache is dropped and the valid source refetched
(fails before: AttributeError).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(integrations): share one catalog-shape validator across cache and fetch
Address review: the cache-read path checked only that the payload was a
dict with a dict 'integrations', while the fresh-fetch path also required
'schema_version'. That asymmetry let an older/poisoned cache such as
{"integrations": {}} (no schema_version) bypass the format contract
instead of being dropped and refetched.
Introduce a shared `_catalog_shape_error()` helper and use it in both
paths so they enforce the same contract (dict + schema_version + dict
integrations). The fresh path still raises IntegrationCatalogError with
the "Invalid catalog format from <url>" prefix; the cache path still
raises ValueError (caught to drop+refetch). Add a test for the
missing-schema_version cache case.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* test(integrations): unit-test the shared catalog-shape validator directly
Replace the integration-level missing-schema_version cache test (which
was masked by multi-source merging — a sibling catalog source still
supplied the entry, so it passed regardless of the fix) with a direct
unit test of _catalog_shape_error. This deterministically proves both
paths now reject a payload missing schema_version, a non-dict
integrations, or a non-dict payload, and accept a well-formed one.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>