diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 7d6aa3f..c30921f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -113,5 +113,9 @@ jobs:
       - name: Run tests
         run: mix test --color
 
+      - name: Run Node Sync E2E tests
+        if: ${{ matrix.main }}
+        run: mix test.node_sync_e2e
+
       - name: Run Marmot E2E tests
         run: mix test.marmot_e2e
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index c00ad21..d7f1f2d 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -89,6 +89,17 @@ jobs:
         if: steps.deps-cache.outputs.cache-hit != 'true'
         run: mix deps.get
 
+      - name: Check tag matches Mix version
+        if: ${{ startsWith(github.ref, 'refs/tags/v') }}
+        run: |
+          TAG_VERSION="${GITHUB_REF_NAME#v}"
+          MIX_VERSION="$(mix run --no-start -e 'IO.puts(Mix.Project.config()[:version])' | tail -n 1)"
+
+          if [ "$TAG_VERSION" != "$MIX_VERSION" ]; then
+            echo "Tag version $TAG_VERSION does not match mix.exs version $MIX_VERSION"
+            exit 1
+          fi
+
       - name: Compile
         run: mix compile --warnings-as-errors
 
@@ -101,6 +112,9 @@ jobs:
       - name: Run tests
         run: mix test --color
 
+      - name: Run Node Sync E2E
+        run: mix test.node_sync_e2e
+
       - name: Run Marmot E2E
         run: mix test.marmot_e2e
 
diff --git a/README.md b/README.md
index 7a55d5d..1f764a8 100644
--- a/README.md
+++ b/README.md
@@ -81,6 +81,28 @@ ws://localhost:4413/relay
 
 ---
 
+## Test suites
+
+Primary test entrypoints:
+
+- `mix test` for the ExUnit suite
+- `mix test.marmot_e2e` for the Marmot client end-to-end suite
+- `mix test.node_sync_e2e` for the two-node relay sync end-to-end suite
+- `mix test.node_sync_docker_e2e` for the release-image Docker two-node relay sync suite
+
+The node-sync harnesses are driven by:
+
+- [`scripts/run_node_sync_e2e.sh`](./scripts/run_node_sync_e2e.sh)
+- [`scripts/run_node_sync_docker_e2e.sh`](./scripts/run_node_sync_docker_e2e.sh)
+- [`scripts/node_sync_e2e.exs`](./scripts/node_sync_e2e.exs)
+- [`compose.node-sync-e2e.yaml`](./compose.node-sync-e2e.yaml)
+
+`mix test.node_sync_e2e` runs two real Parrhesia nodes against separate PostgreSQL databases, verifies catch-up and live sync, restarts one node, and verifies persisted resume behavior. `mix test.node_sync_docker_e2e` runs the same scenario against the release Docker image.
+
+GitHub CI currently runs the non-Docker node-sync e2e on the main Linux matrix job. The Docker node-sync e2e remains an explicit/manual check because it depends on release-image build/runtime fidelity and a working Docker host.
+
+---
+
 ## Production configuration
 
 ### Minimal setup
@@ -283,10 +305,10 @@ mix compile
 mix release
 
 _build/prod/rel/parrhesia/bin/parrhesia eval "Parrhesia.Release.migrate()"
-_build/prod/rel/parrhesia/bin/parrhesia foreground
+_build/prod/rel/parrhesia/bin/parrhesia start
 ```
 
-For systemd/process managers, run the release command in foreground mode.
+For systemd/process managers, run the release command with `start`.
 
 ### Option B: Nix release package (`default.nix`)
 
diff --git a/mix.exs b/mix.exs
index 439d27e..75a3c0d 100644
--- a/mix.exs
+++ b/mix.exs
@@ -62,6 +62,8 @@ defmodule Parrhesia.MixProject do
       test: ["ecto.create --quiet", "ecto.migrate --quiet", "test"],
       "test.nak_e2e": ["cmd ./scripts/run_nak_e2e.sh"],
       "test.marmot_e2e": ["cmd ./scripts/run_marmot_e2e.sh"],
+      "test.node_sync_e2e": ["cmd ./scripts/run_node_sync_e2e.sh"],
+      "test.node_sync_docker_e2e": ["cmd ./scripts/run_node_sync_docker_e2e.sh"],
       bench: ["cmd ./scripts/run_bench_compare.sh"],
       # cov: ["cmd mix coveralls.lcov"],
       lint: ["format --check-formatted", "credo"],