diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 97c94ddacd7a..789c6f163a22 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1031,6 +1031,8 @@ jobs:
     if: needs.preflight.outputs.run_ui_tests == 'true'
     runs-on: ${{ github.event_name == 'workflow_dispatch' && 'ubuntu-24.04' || (github.repository == 'openclaw/openclaw' && 'blacksmith-4vcpu-ubuntu-2404' || 'ubuntu-24.04') }}
     timeout-minutes: 20
+    env:
+      COMPATIBILITY_TARGET: ${{ needs.preflight.outputs.compatibility_target }}
     steps:
       - *linux_node_checkout_step
       - name: Setup Node environment
@@ -1046,7 +1048,14 @@ jobs:
         run: pnpm lint:ui:no-raw-window-open
 
       - name: Test Control UI
-        run: pnpm --dir ui test
+        run: |
+          if [[ "$COMPATIBILITY_TARGET" == "true" ]]; then
+            # Frozen targets can contain timing-sensitive tests fixed on current main.
+            # Retry only failures once; deterministic regressions still fail twice.
+            pnpm --dir ui test -- --retry=1
+          else
+            pnpm --dir ui test
+          fi
 
   checks-fast-core:
     permissions:
@@ -2082,8 +2091,25 @@ jobs:
             "$swift_tools_dir/swiftformat" --version
             "$swift_tools_dir/swiftlint" version
           elif [[ "$HISTORICAL_TARGET" == "true" ]]; then
-            # Frozen release targets before the pinned installer used Homebrew directly.
-            brew install xcodegen swiftlint swiftformat
+            # Frozen release targets before the pinned installer used SwiftFormat 0.61.1.
+            # Keep their lint contract stable instead of inheriting new Homebrew rules.
+            brew install xcodegen swiftlint
+            swiftformat_version="0.61.1"
+            swiftformat_checksum="b990400779aceb7d7020796eb9ba814d4480543f671d38fc0ff48cb72f04c584"
+            swiftformat_archive="$RUNNER_TEMP/swiftformat-$swiftformat_version.zip"
+            swift_tools_dir="$RUNNER_TEMP/openclaw-legacy-swift-tools"
+            curl --fail --location --silent --show-error --retry 3 \
+              --output "$swiftformat_archive" \
+              "https://github.com/nicklockwood/SwiftFormat/releases/download/$swiftformat_version/swiftformat.zip"
+            if [[ "$(shasum -a 256 "$swiftformat_archive" | awk '{print $1}')" != "$swiftformat_checksum" ]]; then
+              echo "SwiftFormat $swiftformat_version archive checksum mismatch" >&2
+              exit 1
+            fi
+            mkdir -p "$swift_tools_dir"
+            unzip -q "$swiftformat_archive" -d "$swift_tools_dir"
+            chmod +x "$swift_tools_dir/swiftformat"
+            echo "$swift_tools_dir" >> "$GITHUB_PATH"
+            [[ "$("$swift_tools_dir/swiftformat" --version)" == "$swiftformat_version" ]]
           else
             echo "Current CI targets must provide scripts/install-swift-tools.sh." >&2
             exit 1
diff --git a/test/scripts/ci-workflow-guards.test.ts b/test/scripts/ci-workflow-guards.test.ts
index a5aa5701419b..61671c03ad7d 100644
--- a/test/scripts/ci-workflow-guards.test.ts
+++ b/test/scripts/ci-workflow-guards.test.ts
@@ -1559,8 +1559,10 @@ describe("ci workflow guards", () => {
 
     for (const installStep of [macosInstallStep, iosInstallStep]) {
       expect(installStep.run).toContain("if [[ -x ./scripts/install-swift-tools.sh ]]; then");
-      expect(installStep.run).toContain("brew install xcodegen swiftlint swiftformat");
     }
+    expect(macosInstallStep.run).toContain("brew install xcodegen swiftlint");
+    expect(macosInstallStep.run).not.toContain("brew install xcodegen swiftlint swiftformat");
+    expect(iosInstallStep.run).toContain("brew install xcodegen swiftlint swiftformat");
     for (const lintStep of [macosLintStep, iosLintStep]) {
       expect(lintStep.run).toContain(
         "if [[ -x ./scripts/lint-swift.sh && -x ./scripts/format-swift.sh ]]; then",
@@ -1828,7 +1830,18 @@ describe("ci workflow guards", () => {
     const swiftLint = workflow.jobs["macos-swift"].steps.find(
       (step: { name?: string }) => step.name === "Swift lint",
     );
-    expect(swiftInstall.run).toContain("brew install xcodegen swiftlint swiftformat");
+    expect(swiftInstall.run).toContain("brew install xcodegen swiftlint");
+    expect(swiftInstall.run).not.toContain("brew install xcodegen swiftlint swiftformat");
+    expect(swiftInstall.run).toContain(
+      "https://github.com/nicklockwood/SwiftFormat/releases/download/$swiftformat_version/swiftformat.zip",
+    );
+    expect(swiftInstall.run).toContain(
+      'swiftformat_checksum="b990400779aceb7d7020796eb9ba814d4480543f671d38fc0ff48cb72f04c584"',
+    );
+    expect(swiftInstall.run).toContain('echo "$swift_tools_dir" >> "$GITHUB_PATH"');
+    expect(swiftInstall.run).toContain(
+      '[[ "$("$swift_tools_dir/swiftformat" --version)" == "$swiftformat_version" ]]',
+    );
     expect(workflow.jobs["macos-swift"].env.HISTORICAL_TARGET).toBe(
       "${{ needs.preflight.outputs.compatibility_target }}",
     );
@@ -1845,6 +1858,16 @@ describe("ci workflow guards", () => {
     expect(checkShard.run).toContain("pnpm tsgo:scripts");
     expect(checkShard.run).toContain("pnpm tsgo:strict-ratchet");
     expect(checkShard.run).toContain('elif [[ "$HISTORICAL_TARGET" != "true" ]]');
+
+    const uiTest = workflow.jobs["checks-ui"].steps.find(
+      (step: { name?: string }) => step.name === "Test Control UI",
+    );
+    expect(workflow.jobs["checks-ui"].env.COMPATIBILITY_TARGET).toBe(
+      "${{ needs.preflight.outputs.compatibility_target }}",
+    );
+    expect(uiTest.run).toContain('if [[ "$COMPATIBILITY_TARGET" == "true" ]]');
+    expect(uiTest.run).toContain("pnpm --dir ui test -- --retry=1");
+    expect(uiTest.run).toContain("pnpm --dir ui test");
   });
 
   it("does not rebuild Control UI after build:ci-artifacts", () => {