feat(admin): add audit target APIs and harden target source handling (#2350)

Signed-off-by: houseme <housemecn@gmail.com>
Co-authored-by: 安正超 <anzhengchao@gmail.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: houseme <4829346+houseme@users.noreply.github.com>

Cargo.lock

@@ -7703,6 +7703,7 @@ dependencies = [
  "rustfs-targets",
  "serde",
  "serde_json",
+ "temp-env",
  "thiserror 2.0.18",
  "tokio",
  "tracing",
@@ -7897,6 +7898,7 @@ dependencies = [
  "rustfs-utils",
  "s3s",
  "serde",
+ "tempfile",
  "thiserror 2.0.18",
  "time",
  "tokio",
@@ -8396,6 +8398,7 @@ name = "rustfs-targets"
 version = "0.0.5"
 dependencies = [
  "async-trait",
+ "criterion",
  "reqwest 0.13.2",
  "rumqttc",
  "rustfs-config",