Every IDD-push capture stall now carries a VERDICT instead of a hypothesis list.
The shared ring header grows a v2 telemetry tail (drain-loop heartbeat QPC,
last-acquire QPC, full-width offered counter) the driver stamps on every drain
pass; the host samples it between fresh frames and attributes each stall:
worker-stalled (our thread starved) / compose-silence (DWM composed nothing —
the disturbance is below capture) / delivery-leg (frames existed, our
publish/ring/consume lost them). The metronomic WARN prints the running tally,
so one pasted log line settles the Branch-1/Branch-2 fork of the
vdisplay-disturbance-immunity program per session, per box.
Both directions stay version-safe: the tail is gated on the HOST-stamped header
version (a v2 driver never writes past a v1 host's 64-byte layout — it maps the
whole section instead of a fixed 88 bytes), and a v2 host reads a zero heartbeat
as pre-telemetry driver, no verdict.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
enricobuehlerandClaude Fable 5
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