diff --git a/.github/workflows/on-pr-dory-smoke.yaml b/.github/workflows/on-pr-dory-smoke.yaml
index 11d06c4..532a010 100644
--- a/.github/workflows/on-pr-dory-smoke.yaml
+++ b/.github/workflows/on-pr-dory-smoke.yaml
@@ -63,12 +63,27 @@ jobs:
           echo "DEVELOPER_DIR=$newest/Contents/Developer" >> "$GITHUB_ENV"
           sudo xcode-select -s "$newest/Contents/Developer"
 
+      # Dory's rebased upstream builds its Swift package against a generated
+      # Rust UniFFI XCFramework. A clean checkout has no binary artifact, so
+      # raw xcodebuild cannot resolve DoryFFI until this preparation runs.
+      - name: Install Rust toolchain for Dory FFI
+        uses: dtolnay/rust-toolchain@4be7066ada62dd38de10e7b70166bc74ed198c30 # stable
+
+      - name: Install Dory FFI build prerequisites
+        run: brew install protobuf
+
       - name: Build Dory from source
         working-directory: dory-src
         run: |
           set -euxo pipefail
           # Match dory CI: Metal toolchain download can be flaky; best-effort.
           xcodebuild -downloadComponent MetalToolchain || true
+          # Match dory's scripts/build.sh + scripts/test.sh clean-checkout
+          # contract: materialize the ignored DoryFFI binary and generated
+          # Swift bindings before SwiftPM resolves the app dependencies.
+          scripts/build-dory-ffi-xcframework.sh --if-needed
+          test -f dory-core-swift/artifacts/DoryFFI.xcframework/macos-arm64_x86_64/libdory_ffi.a
+          test -f dory-core-swift/Sources/DoryCore/generated/dory_ffi.swift
           # Prefer deterministic product path via -derivedDataPath (not scripts/build.sh
           # alone, which may use a user-local DerivedData path).
           xcodebuild -project Dory.xcodeproj -scheme Dory \
diff --git a/tests/dory_smoke_workflow.rs b/tests/dory_smoke_workflow.rs
index ac56ed6..3c85164 100644
--- a/tests/dory_smoke_workflow.rs
+++ b/tests/dory_smoke_workflow.rs
@@ -35,6 +35,25 @@ fn dory_smoke_workflow_clone_build_install_contract() {
         text.contains("xcodebuild") && text.contains("derivedDataPath"),
         "must build in-pipeline with deterministic derivedDataPath"
     );
+    assert!(
+        text.contains("dtolnay/rust-toolchain") && text.contains("brew install protobuf"),
+        "must install the Rust and protoc prerequisites used by Dory's FFI builder"
+    );
+    let ffi_build = text
+        .find("scripts/build-dory-ffi-xcframework.sh --if-needed")
+        .expect("must materialize DoryFFI from a clean checkout");
+    let app_build = text
+        .find("xcodebuild -project Dory.xcodeproj")
+        .expect("must build the Dory app");
+    assert!(
+        ffi_build < app_build,
+        "must generate DoryFFI before SwiftPM resolves the Dory app"
+    );
+    assert!(
+        text.contains("DoryFFI.xcframework/macos-arm64_x86_64/libdory_ffi.a")
+            && text.contains("Sources/DoryCore/generated/dory_ffi.swift"),
+        "must verify both generated Dory FFI artifacts before xcodebuild"
+    );
     assert!(
         text.contains("GITHUB_PATH") && text.contains("scripts"),
         "must put scripts/dory on PATH"