feat(ohos): add nearby console integration and improve UDP path selection (#2486)

* feat(ohos): complete nearby console integration

Use the core management RPC surface for ephemeral nearby deployments, harden session lifecycle and packet validation, support tunnel-to-NIC packet conversion, and timestamp HarmonyOS traffic samples.

* fix(core): prefer verified UDP hole-punch paths

Treat zero latency as unmeasured so a newly admitted UDP path cannot replace a working relay before liveness is confirmed.

---------

Co-authored-by: FrankHan <frankhan@FrankHans-Mac-mini.local>

easytier-contrib/easytier-ohrs/Cargo.lock

@@ -1244,6 +1244,8 @@ dependencies = [
  "derive_builder",
  "easytier-proto",
  "futures",
+ "getrandom 0.2.16",
+ "getrandom 0.3.3",
  "guarden",
  "hmac",
  "http-body-util",
@@ -1277,6 +1279,7 @@ dependencies = [
  "tracing",
  "url",
  "uuid",
+ "wasm-bindgen",
  "webpki-roots 0.26.11",
  "wildmatch",
  "x25519-dalek",
@@ -1288,10 +1291,15 @@ dependencies = [
 name = "easytier-ohrs"
 version = "0.1.0"
 dependencies = [
+ "anyhow",
  "async-trait",
  "base64 0.22.1",
+ "bytes",
  "easytier",
+ "easytier-core",
+ "easytier-proto",
  "flate2",
+ "futures",
  "gethostname 1.1.0",
  "ipnet",
  "napi-build-ohos",