bench(integration): port integration benchmarks to CodSpeed (simulation + memory)

.github/workflows/codspeed.yml

@@ -60,3 +60,72 @@ jobs:
         with:
           mode: simulation,memory
           run: cargo codspeed run
+
+  # Integration benches drive the real async client against the bartender mock
+  # server, so they need the service container + MOCK_SERVER_URL. Kept as a
+  # separate job so the unit-bench job above stays fast and mock-server-free.
+  integration-benchmarks:
+    name: Run CodSpeed integration benchmarks
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write # for OpenID Connect authentication with CodSpeed
+    services:
+      mock-server:
+        image: ghcr.io/whiskeysockets-devtools/bartender:latest
+        credentials:
+          username: ${{ github.actor }}
+          password: ${{ secrets.BARTENDER_GHCR_TOKEN }}
+        ports:
+          - 8080:8080
+        env:
+          CHATSTATE_TTL_SECS: "3"
+        options: --log-driver none
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: nightly-2026-06-16
+
+      - name: Install tools (protoc, cargo-codspeed)
+        uses: taiki-e/install-action@v2
+        with:
+          tool: protoc@${{ env.PROTOC_VERSION }},cargo-codspeed@4.7.0
+
+      - name: Cache Rust registry
+        uses: Swatinem/rust-cache@v2
+        with:
+          prefix-key: ${{ runner.os }}-cargo-codspeed-integration
+          cache-targets: "false"
+
+      - name: Wait for mock server
+        run: |
+          for i in $(seq 1 30); do
+            if curl -sk https://localhost:8080/ > /dev/null 2>&1; then
+              echo "Mock server is ready"
+              exit 0
+            fi
+            sleep 1
+          done
+          echo "Mock server failed to become ready"
+          exit 1
+
+      # simulation and memory share the same instrumented build, so one
+      # build covers both instruments.
+      - name: Build the benchmark targets
+        run: cargo codspeed build -m simulation -m memory -p bench-integration
+
+      # `-p bench-integration` is required: `tests/bench-integration` is not a
+      # workspace default-member, so a bare `cargo codspeed run` discovers no
+      # benchmarks for it ("No benchmarks found for the simulation mode").
+      - name: Run the benchmarks
+        uses: CodSpeedHQ/action@v4
+        env:
+          MOCK_SERVER_URL: "wss://127.0.0.1:8080/ws/chat"
+          RUST_LOG: warn
+        with:
+          mode: simulation,memory
+          run: cargo codspeed run -p bench-integration

tests/bench-integration/Cargo.toml

@@ -4,26 +4,11 @@ version = "0.0.0"
 edition = "2024"
 publish = false
 
-[package.metadata.cargo-shear]
-ignored = ["dhat"]
-
-[[bin]]
-name = "bench-integration"
-path = "src/main.rs"
-
-[features]
-dhat-heap = ["dep:dhat"]
-
 [dependencies]
-anyhow = { workspace = true }
-dhat = { version = "0.3", optional = true }
+divan = { workspace = true }
 e2e-tests = { path = "../e2e" }
 env_logger = { workspace = true }
-log = { workspace = true }
-serde = { workspace = true }
-serde_json = { workspace = true, features = ["std"] }
 tokio = { workspace = true, features = ["macros", "rt-multi-thread", "sync", "time"] }
-wacore = { path = "../../wacore" }
 whatsapp-rust = { path = "../..", default-features = false, features = [
   "danger-skip-tls-verify",
   "debug-diagnostics",
@@ -33,5 +18,9 @@ whatsapp-rust = { path = "../..", default-features = false, features = [
   "signal",
 ] }
 
+[[bench]]
+name = "integration"
+harness = false
+
 [lints]
 workspace = true