Interop: optional OpenAI-compatible facade for memory/search #45
Description
Summary
Add an optional OpenAI-compatible memory/search facade to lower integration friction.
Why
Many agents and internal tools already target OpenAI-compatible transport conventions. A compatibility facade can reduce adoption cost without changing ELF core semantics.
Scope
- Define optional compatibility endpoints mapping to ELF v2 semantics.
- Document exact mapping rules and unsupported fields.
- Ensure compatibility layer preserves:
- evidence-bound notes
- scoping headers/tenancy model
- deterministic ingestion boundaries
Acceptance Criteria
- Existing OpenAI-style clients can perform basic ingest/search with minimal adapter code.
- Compatibility mode is explicitly opt-in.
- Behavior parity with native ELF endpoints is documented and tested.