fix(scanner): make distributed usage convergence authoritative (#5151)

* fix(scanner): make distributed usage cycles authoritative

* fix(scanner): close distributed refresh races

* fix(config): align scanner reload integration

* fix(admin): scope config test helpers

* fix(scanner): harden distributed usage convergence

* fix(scanner): preserve rolling activity compatibility

* fix(admin): expose non-secret optional config values

* fix(scanner): acknowledge distributed dirty usage

* fix(ecstore): make bucket mutations cancellation safe

* fix(scanner): preserve pending dirty acknowledgements

* test(obs): account for superseded scanner metric

* fix(api): reject excess detached bucket mutations

* test: close scanner convergence coverage gaps

* fix(scanner): make path tracking cleanup one-shot

---------

Co-authored-by: Henry Guo <marshawcoco@users.noreply.github.com>
Co-authored-by: houseme <housemecn@gmail.com>

Cargo.lock

@@ -9899,14 +9899,18 @@ name = "rustfs-scanner"
 version = "1.0.0-beta.11"
 dependencies = [
  "async-trait",
+ "bytes",
  "chrono",
  "futures",
+ "hex-simd",
+ "hmac 0.13.0",
  "http 1.4.2",
  "metrics",
  "rand 0.10.2",
  "rmp-serde",
  "rustfs-common",
  "rustfs-config",
+ "rustfs-credentials",
  "rustfs-data-usage",
  "rustfs-ecstore",
  "rustfs-filemeta",
@@ -9916,7 +9920,9 @@ dependencies = [
  "serde",
  "serde_json",
  "serial_test",
+ "sha2 0.11.0",
  "temp-env",
+ "tempfile",
  "thiserror 2.0.19",
  "time",
  "tokio",