Models like OpenAI GPT-5.2 require the full OCID rather than the short
model_id. The catalog now maps model IDs to OCIDs per region (us-ashburn-1).
_call_genai and _embed_text resolve the OCID for the configured region
at runtime, falling back to short model_id for unmapped regions.
New models added from OCI portal: GPT-5.3/5.2/5.1/5 Codex, GPT Image
1/1.5, Llama Guard 4, ProtectAI DeBERTa, OpenAI Text Embedding 3
Large/Small. Total: 69 chat + 11 embedding models.
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