Add `ideogram-4` and `krea2-identity-edit-realism` to the gateway model_list

[mabry1985]

Two model aliases that consumer defaults reference are absent from the deployment's model_list (verified against api.proto-labs.ai during protoDirector's live image-suite smoke, protoDirector#5). Splitting this out of #38 (where it was noted as an aside on the video thread) so it's tracked on its own.

Missing

Alias	Referenced by	Symptom when called
protolabs/ideogram-4	typography_model default in protobanana-plugin + protoDirector's typography_image tool	key-scope / unknown-model error; typography (accurate-text posters/logos) unavailable
protolabs/krea2-identity-edit-realism	realism_identity_model default in the plugin + protoDirector's identity_edit(realism: true)	same; the realism-LoRA path (photographic faces/skin) is unavailable

Present, for contrast

protolabs/krea2-identity-edit (the base identity edit) IS live and passed the smoke — so identity_edit works today; only the realism=true toggle falls over. Likewise the rest of the Qwen image suite (gen/edit/region/bgremove/outpaint/chat-compose) all verified live. This issue is only the two aliases above.

Ask

Add both to the gateway model_list (mode image_generation for ideogram-4, image_edit for the krea2 realism variant, matching the existing entries), and confirm the smoke key's model scope includes them. Once they're live, protoDirector's typography_image and identity_edit(realism:) need no code change — they resolve these aliases from settings already.

Current model_list image coverage observed on the deployment: qwen-image, qwen-image-turbo, qwen-image-edit, qwen-image-chat, qwen-image-multiref, qwen-image-outpaint, qwen-image-region-edit, qwen-image-bgremove, qwen-image-bgremove-rmbg, qwen-image-inpaint, krea2-identity-edit. Missing: the two above.

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