[luckyq]

Problem

• Dockerfile.quick-start-vllm pins Dynamo v1.6.0 (701da25) with vLLM nightly edad8b03. Every worker built from it exits at import (cannot import name 'get_engine_zmq_addresses'), so the quick start cannot start a worker (Dockerfile.quick-start-vllm (v0.2.0): pinned Dynamo v1.6.0 cannot import on the pinned vLLM nightly #159).
• The build-time check imports dynamo.vllm but not the worker entry point, so the mismatch passes the build.

Fix

• DYNAMO_REF → 318ab039 (Dynamo main, 2026-11-02). Dynamo dropped the renamed import on 2026-10-23 (build(vllm): bump core to v0.32.0 and Omni to v0.32.0rc1 dynamo#16757); v1.6.0 and v1.6.1 both still have it. VLLM_IMAGE and KVCR_VLLM_REF are unchanged.
• The compatibility check now also runs import dynamo.vllm.main, so a Dynamo/vLLM pair that cannot start a worker fails the build instead of the first python -m dynamo.vllm.

Validation

• Image built from this Dockerfile unchanged otherwise (ghcr.io/luckyq/kvcr-phase1:qs-218c7816b34b, 7 min); the new import check passes.
• 2×H100 (dynamo-aws-dev-02), Qwen3-8B, Guard mode, Phase 1 harness TC-01/02/03: 3/3 PASS (source_write == remote_deliver, 0 token mismatches).
• Same Dynamo revision with the full matrix earlier today: dense 6/6, 2P+1D 6/6, Qwen3.5-4B hybrid 6/6.

Fixes #159.