Initial dig-protocol crate

Standalone L2 protocol crate extending Chia's wire protocol with
DIG opcodes 200-219. Re-exports chia-protocol, chia-sdk-client,
chia-ssl, chia-traits under a single dependency.

Public API:
- DigMessage: raw-u8 opcode wire framing (bypasses ProtocolMessageTypes enum validation)
- DigMessageType: typed discriminants for 200-219 range
- RegisterPeer/RegisterAck: DIG introducer wire types (218/219)
- RequestPeersIntroducer/RespondPeersIntroducer: Chia-standard (63/64)

Features native-tls and rustls forward to chia-sdk-client; TLS-dependent
re-exports (Client, ClientState, Connector) gate on either.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: MichaelTaylor3d

.github/workflows/publish.yml

@@ -0,0 +1,113 @@
+name: Publish to crates.io
+
+on:
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version to publish (e.g., v0.1.0)'
+        required: true
+        type: string
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  test:
+    name: Test Suite
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+
+      - name: Cache dependencies
+        uses: Swatinem/rust-cache@v2
+
+      - name: Check formatting
+        run: cargo fmt --all -- --check
+
+      - name: Check clippy
+        run: cargo clippy --all-targets --all-features -- -D warnings
+
+      - name: Run tests
+        run: cargo test --all-features -- --test-threads=1
+
+      - name: Check documentation
+        run: cargo doc --no-deps --all-features
+
+  publish:
+    name: Publish to crates.io
+    runs-on: ubuntu-latest
+    needs: test
+    if: startsWith(github.ref, 'refs/tags/v') || github.event_name == 'workflow_dispatch'
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+
+      - name: Cache dependencies
+        uses: Swatinem/rust-cache@v2
+
+      - name: Verify package can be built
+        run: cargo build --release
+
+      - name: Verify package can be packaged
+        run: cargo package --allow-dirty
+
+      - name: Check if CARGO_REGISTRY_TOKEN is available
+        run: |
+          if [ -z "${{ secrets.CARGO_REGISTRY_TOKEN }}" ]; then
+            echo "CARGO_REGISTRY_TOKEN secret is not set in repository settings"
+            exit 1
+          fi
+
+      - name: Publish to crates.io
+        run: cargo publish --allow-dirty --token ${{ secrets.CARGO_REGISTRY_TOKEN }}
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+
+  create-release:
+    name: Create GitHub Release
+    runs-on: ubuntu-latest
+    needs: publish
+    if: startsWith(github.ref, 'refs/tags/v')
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Extract version from tag
+        id: extract_version
+        run: echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
+
+      - name: Create GitHub Release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GH_ACCESS_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: "dig-gossip v${{ steps.extract_version.outputs.VERSION }}"
+          body: |
+            ## dig-gossip v${{ steps.extract_version.outputs.VERSION }}
+
+            DIG Network P2P gossip — peer discovery, connection management, and message routing with Plumtree, ERLAY, priority lanes, compact blocks, Dandelion++, and relay fallback.
+
+            ### Installation
+            ```toml
+            [dependencies]
+            dig-gossip = "${{ steps.extract_version.outputs.VERSION }}"
+            ```
+
+            See the [README](https://github.com/DIG-Network/dig-gossip/blob/main/README.md) for usage instructions.
+          draft: false
+          prerelease: false

.gitignore

@@ -0,0 +1 @@
+/target