Turns "it does not work" into an attachable report instead of a log-less
issue. Three read-only host tools, reachable from the launcher:
- doctor.py checks GPU/driver, Vulkan ICDs, display session, memory, disk,
overlay layer, core-dump limit, i915 panel self-refresh and prefix/runtime
state. --json and --report produce an issue attachment; warnings do not fail.
- crash-report.py bundles the doctor checks, process table, dserver and
launcher log tails, graphics kernel messages, display state and recent core
dumps. Environment is never collected and home/user/host are redacted.
- perf-baseline.py parses the game's own netstats.csv into average FPS,
p50/p95/p99 frame time, slowest-quarter FPS and hitch count, with --json and
--append for before/after comparisons.
COMPATIBILITY.md records the verified UHD 620 row with measured numbers
(24-32 avg FPS, p99 44-98 ms) and explains how to submit another one.
