Fix stale history header on Space refresh

Handle negated pain mentions in injury keyword detection

Sanitize parser payload instead of rejecting on schema deviations

Fix Space prefill slowness: cap prefill threads, warm up at startup

Fix llama.cpp parser hang: compact prompt + minified JSON grammar

Revert "Disable llama.cpp schema grammar by default"

Disable llama.cpp schema grammar by default

Add llama.cpp parser backend for Space

Add detailed parser trace logging

Log invalid parser responses for debugging

Improve parser runtime config and check-in state

Build training coach MVP