test(scanner): verify restart evidence against tested builds (#7232)

* chore(deps): refresh scanner heal batch dependency baseline

Regenerate compatible lockfile selections before the next implementation
batch. Cargo upgrade leaves direct requirements unchanged.

Co-Authored-By: heihutu <heihutu@gmail.com>
Co-Authored-By: zhi22915 <qiuzgang@gmail.com>

* fix(ecstore): remove duplicate local rename implementation

Keep the canonical commit module after concurrent storage changes merged.
The control-write and rollback changes are already present there.

Co-Authored-By: heihutu <heihutu@gmail.com>
Co-Authored-By: zhi22915 <qiuzgang@gmail.com>

* chore(deps): refresh profiling dependencies for the next batch

Update hotpath and its macro crate to the compatible patch release before
the next dependency-ready implementation tasks.

Co-Authored-By: heihutu <heihutu@gmail.com>
Co-Authored-By: zhi22915 <qiuzgang@gmail.com>

* fix(deps): preserve supported hotpath focus expressions

Keep the profiler runtime before its regex-lite compatibility regression.
Track the opt-in validation required to remove this constraint in backlog.

Refs rustfs/backlog#2302.

Co-Authored-By: heihutu <heihutu@gmail.com>
Co-Authored-By: zhi22915 <qiuzgang@gmail.com>

* test(scanner): add bounded ABBA validation harness

Refs rustfs/backlog#2266 and rustfs/backlog#2240.

Co-Authored-By: heihutu <heihutu@gmail.com>
Co-Authored-By: zhi22915 <qiuzgang@gmail.com>

* test(scanner): verify real restart evidence before release gates

Co-Authored-By: heihutu <heihutu@gmail.com>
Co-Authored-By: zhi22915 <qiuzgang@gmail.com>

* fix(test): bind scanner evidence to execution and build identity

Co-Authored-By: heihutu <heihutu@gmail.com>
Co-Authored-By: zhi22915 <qiuzgang@gmail.com>

* docs(test): use the nextest workspace report directory

Co-Authored-By: heihutu <heihutu@gmail.com>
Co-Authored-By: zhi22915 <qiuzgang@gmail.com>

* fix(test): reap ABBA leaders only after process-group cleanup

Co-Authored-By: heihutu <heihutu@gmail.com>
Co-Authored-By: zhi22915 <qiuzgang@gmail.com>

* fix(test): preserve inclusive ABBA thresholds

Use decimal boundary comparisons for ABBA ratio checks and cover exact documented p99, throughput, and P1 limits.

Co-Authored-By: heihutu <heihutu@gmail.com>

Co-Authored-By: zhi22915 <qiuzgang@gmail.com>

---------

Co-authored-by: heihutu <heihutu@gmail.com>
Co-authored-by: zhi22915 <qiuzgang@gmail.com>
Co-authored-by: overtrue <anzhengchao@gmail.com>

docs/operations/scanner-benchmark-runbook.md

@@ -85,6 +85,13 @@ at most 1 MiB. Logs are kept separately and require an operator-managed disk
 quota. Missing output, timeout, nonzero exit, unknown/missing metrics, zero
 samples, and request errors fail the run. Adapters must terminate their own
 children on failure and `stop` must be idempotent even after partial preparation.
+The runner keeps its session leader unreaped while stopping a failed command
+or collector: it sends TERM, allows the existing ten-second grace period, then
+kills the remaining process group before reaping. This prevents a parent exit
+from hiding live descendants or allowing the group ID to be reused before its
+last signal. A successful `prepare` preserves adapter-owned services until
+`stop`; services that leave the command's process group remain the adapter's
+cleanup responsibility.
 
 The request contains the fixed manifest fields, selected build, scenario, round,
 leg, comparison (`build` or `background`), background mode (`on` or `off`),