The RX 580 (Polaris/Vulkan) keeps timing out its GPU ring under relentless
back-to-back embedding load — a global throttle can't distinguish a fragile card
from a robust one. Make the admission gate PER-MODEL: each model id gets its own
semaphore + backlog counter + pacing, resolved from the models.json entry
(embed_max_concurrency / embed_max_backlog / embed_min_interval_ms), falling back
to the CODERAI_EMBED_* env vars, then defaults. Default min interval is now
200ms (was 0) so GPU starts are paced out of the box, giving the ring breathing
room; a robust CUDA model can set it to 0 per-model. Bump 0.1.82.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0196Gm4PNkcuybDj9yfcz3CR