IBEISIA.iaCheckMissing is dead code: the WBIA-600 self-heal never re-sends or retries

[JasonWildMe]

Found during the investigation for #1710, where it is documented as explicitly out of scope.

Current Behavior

IBEISIA.iaCheckMissing (src/main/java/org/ecocean/identity/IBEISIA.java:790) is the only in-request self-heal when WBIA answers an identify/add call with code 600 "Missing image and/or annotation UUIDs". It is dead code in both branches:

• Image branch (IBEISIA.java:798-808): a literal no-op. It iterates missing_image_uuid_list and prints **** FAKE ATTEMPT to sendMediaAssets: uuid=... with the comment // TODO: actually send the mediaasset duh. No media asset is ever sent.
• Annotation branch (IBEISIA.java:809-832): calls __sendAnnotations(anns, context, myShepherd) but never assigns the result — JSONObject srtn = null; stays null, so the success check if ((srtn != null) && ...) tryAgain = true; can never fire.

Since both branches leave tryAgain == false, every caller (IBEISIA.java:221 inside __sendAnnotations itself, and IBEISIA.java:951 in the identify flow) concludes there is nothing to retry. An identification job hit by a 600 therefore burns all of its requeues without WBIA ever receiving the missing objects.

Expected Behavior

On a 600, the missing media assets and annotations should actually be re-sent to WBIA, the response should be checked for success, and the identify should be retried when the re-send worked — with a bound on retry attempts so a persistent failure cannot loop.

Notes

• feat(ia): WBIA annotation reconciliation sweep #1710's reconciliation sweep makes the next identify succeed by healing registration in the background; it does not rescue an in-flight job. This issue is about the in-flight path.
• The method carries // TODO: Evaluate, deprecate fully and remove — an acceptable alternative resolution is to delete iaCheckMissing outright and rely on the sweep plus proper retry semantics, rather than fixing the branch bodies. Either way, the current state (a self-heal that silently does nothing) should not survive.