- _cudagraph_plugin: warm up autotune/JIT explicitly before graph capture
(internal 5-iter warmup is too short), tag fallback markers with the
failing phase; first-run latency no longer jitters run-to-run.
- _device_guard_plugin (new): set GEMS_VENDOR via torch probe before
importing flag_gems, avoiding its timeout-less nvidia-smi subprocess
probe that can hang import in fork-broken environments.
- _pretty_report_plugin (new) + _term_style (new): fold inputs identical
across all result rows into a legend line, color status/plugin
tags/markers on the live terminal; run.log is ANSI-stripped and keeps
upstream SUCCESS/column wording for grep compatibility.
- run_pytest.sh: make USE_FLAGTUNE overridable, group all knobs into a
config section with Chinese comments, add start/end banners.
- README: document the warmup semantics, new plugins/env vars, and the
A/B rule that both sides must use the same USE_FLAGTUNE.
