Add provider-independent NetherNet signalling and local connection checks

.github/workflows/deploy-feature-snapshot.yml

@@ -38,6 +38,7 @@ jobs:
           echo "Publishing ${publish_version}"
 
   deploy:
+    if: github.repository == 'CloudburstMC/Network'
     needs: version
     uses: ./.github/workflows/deploy.yml
     with:

.github/workflows/deploy-release.yml

@@ -6,6 +6,7 @@ on:
 
 jobs:
   deploy:
+    if: github.repository == 'CloudburstMC/Network'
     uses: CloudburstMC/Network/.github/workflows/deploy.yml@develop
     with:
       deploy-url: "https://s01.oss.sonatype.org/service/local/staging/deploy/maven2/"

.github/workflows/deploy-snapshot.yml

@@ -6,6 +6,7 @@ on:
 
 jobs:
   deploy:
+    if: github.repository == 'CloudburstMC/Network'
     uses: CloudburstMC/Network/.github/workflows/deploy.yml@develop
     with:
       deploy-url: "https://repo.opencollab.dev/maven-snapshots/"

.github/workflows/deploy.yml

@@ -22,6 +22,7 @@ on:
 
 jobs:
   publish:
+    if: github.repository == 'CloudburstMC/Network'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3

.github/workflows/nxs-conformance.yml

@@ -0,0 +1,36 @@
+name: External signalling conformance
+on:
+  push:
+    branches: [nxs-dev]
+  pull_request:
+    branches: [upstream, nxs-dev]
+  workflow_dispatch:
+permissions:
+  contents: read
+jobs:
+  conformance:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: |
+            8
+            17
+            21
+      - uses: gradle/actions/setup-gradle@v4
+      - name: Verify canonical protocol fixtures
+        run: node docs/external-signalling/fixtures.mjs
+      - name: Build exact native dependency chain
+        run: bash scripts/bootstrap-native-admission.sh
+      - name: Validate transport and independent provider
+        run: ./gradlew --max-workers=2 build :external-signalling:nativeAdmissionTest
+      - uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: nxs-conformance
+          path: |
+            **/build/test-results/**
+            **/build/reports/tests/**
+            .native-deps/maven/**/provenance.json

.gitignore

@@ -220,3 +220,6 @@ gradle-app.setting
 *.hprof
 
 # End of https://www.toptal.com/developers/gitignore/api/java,gradle,eclipse,netbeans,intellij+all
+
+# Locally rebuilt immutable native development artifacts
+.native-deps/