The Instagram connector existed but was never registered, so Channels showed
it as "provider unavailable" and publishing could not resolve it.
- Register createInstagramConnector in the connections registry and the
publishing registry; add the connector-runtime publishing policy
(idempotency "none": media_publish has no key, never replay).
- The Facebook app credentials identify the Hub, not a collective: read them
only from INSTAGRAM_CLIENT_ID / INSTAGRAM_CLIENT_SECRET. Drop the
clientId/clientSecret connect fields and stop copying the app secret into
each connection's vault entry. The provider is connectable only when both
are set (connectEnabled + connectNote).
- Fail the connect when several Instagram accounts are granted instead of
silently publishing as the first Page's account.
- Fix the connector package's pre-existing lint errors (it now ships in api).
- Tests: contract cases for env-only credentials and the multi-account
refusal; connections integration case for provider gating and the
Facebook dialog redirect.
- docs/oauth-connect.md: Instagram setup, callback URI and limits.
Not in this change: publishing images needs a public plaintext JPEG URL that
Meta downloads, and storage is client-side encrypted, so presigned S3 URLs
cannot serve it. Until a short-lived media endpoint exists, publishing to
Instagram fails with an explicit error. Token refresh via ig_refresh_token
on graph.facebook.com also needs checking against Facebook Login tokens.
hacklab
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