v1.1 - Recovery-line evaluation and live demo (pre-workspace freeze)

Freeze of EVOKE before the workspace-signal (J-lens) work landed. Captures the state evaluated in the paper's recovery-dividing-line sections: reversible eviction primitives (kv_block_save/load, attention capture), the identity-keyed recovery policy, agent/NIAH/multi-fact benches with H2O, SnapKV, StreamingLLM, and InfLLM baselines on one substrate, the OpenAI-compatible server, and the Qwen 2.5 3B HuggingFace demo. Everything after this tag belongs to the workspace-eviction line released as v2.0.