diff --git a/.github/actions/pnpm-lockfile-check/action.yaml b/.github/actions/pnpm-lockfile-check/action.yaml
new file mode 100644
index 00000000000..12342aa91a2
--- /dev/null
+++ b/.github/actions/pnpm-lockfile-check/action.yaml
@@ -0,0 +1,26 @@
+name: "Check PNPM Lockfile and Install Workspace Dependencies"
+description: "Sets up pnpm and installs workspace dependencies with frozen lockfile check"
+runs:
+  using: "composite"
+  steps:
+    - uses: pnpm/action-setup@b906affcce14559ad1aafd4ab0e942779e9f58b1 # v4
+    - name: Install Workspace Dependencies (Frozen Lockfile)
+      shell: bash
+      run: |
+        if ! pnpm install --frozen-lockfile --ignore-scripts; then
+          echo "::error title=PNPM Lockfile Out of Date::The pnpm-lock.yaml file is out of sync with workspace package.json dependencies."
+          echo ""
+          echo "===================================================================================================="
+          echo "❌ PNPM Lockfile Out of Date (ERR_PNPM_OUTDATED_LOCKFILE)"
+          echo ""
+          echo "One or more package.json files have changed or were merged without updating pnpm-lock.yaml."
+          echo ""
+          echo "To resolve this failure, please update the lockfile locally and commit the result:"
+          echo "    pnpm install --no-frozen-lockfile --ignore-scripts"
+          echo "    git add pnpm-lock.yaml"
+          echo "    git commit -m \"chore: update pnpm-lock.yaml\""
+          echo "    git push"
+          echo "===================================================================================================="
+          echo ""
+          exit 1
+        fi
diff --git a/.github/actions/run-unit-tests/action.yaml b/.github/actions/run-unit-tests/action.yaml
index 8756c30c924..b9c32156528 100644
--- a/.github/actions/run-unit-tests/action.yaml
+++ b/.github/actions/run-unit-tests/action.yaml
@@ -17,27 +17,7 @@ runs:
       uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6.5.0
       with:
         node-version: ${{ inputs.node-version }}
-    - uses: pnpm/action-setup@b906affcce14559ad1aafd4ab0e942779e9f58b1 # v4
-    - name: Install Workspace Dependencies (Frozen Lockfile)
-      run: |
-        if ! pnpm install --frozen-lockfile --ignore-scripts; then
-          echo "::error title=PNPM Lockfile Out of Date::The pnpm-lock.yaml file is out of sync with workspace package.json dependencies."
-          echo ""
-          echo "===================================================================================================="
-          echo "❌ PNPM Lockfile Out of Date (ERR_PNPM_OUTDATED_LOCKFILE)"
-          echo ""
-          echo "One or more package.json files have changed or were merged without updating pnpm-lock.yaml."
-          echo ""
-          echo "To resolve this failure, please update the lockfile locally and commit the result:"
-          echo "    pnpm install --no-frozen-lockfile"
-          echo "    git add pnpm-lock.yaml"
-          echo "    git commit -m \"chore: update pnpm-lock.yaml\""
-          echo "    git push"
-          echo "===================================================================================================="
-          echo ""
-          exit 1
-        fi
-      shell: bash
+    - uses: ./.github/actions/pnpm-lockfile-check
     - name: Cache Turborepo
       uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
       with:
diff --git a/.github/workflows/bigtable-conformance.yaml b/.github/workflows/bigtable-conformance.yaml
index a4adbc1fb04..0d4bf4ee29a 100644
--- a/.github/workflows/bigtable-conformance.yaml
+++ b/.github/workflows/bigtable-conformance.yaml
@@ -52,26 +52,7 @@ jobs:
       with:
         go-version: '>=1.20.2'
     - run: chmod +x .kokoro/conformance.sh
-    - uses: pnpm/action-setup@b906affcce14559ad1aafd4ab0e942779e9f58b1 # v4
-    - name: Install Workspace Dependencies (Frozen Lockfile)
-      run: |
-        if ! pnpm install --frozen-lockfile --ignore-scripts; then
-          echo "::error title=PNPM Lockfile Out of Date::The pnpm-lock.yaml file is out of sync with workspace package.json dependencies."
-          echo ""
-          echo "===================================================================================================="
-          echo "❌ PNPM Lockfile Out of Date (ERR_PNPM_OUTDATED_LOCKFILE)"
-          echo ""
-          echo "One or more package.json files have changed or were merged without updating pnpm-lock.yaml."
-          echo ""
-          echo "To resolve this failure, please update the lockfile locally and commit the result:"
-          echo "    pnpm install --no-frozen-lockfile"
-          echo "    git add pnpm-lock.yaml"
-          echo "    git commit -m \"chore: update pnpm-lock.yaml\""
-          echo "    git push"
-          echo "===================================================================================================="
-          echo ""
-          exit 1
-        fi
+    - uses: ./.github/actions/pnpm-lockfile-check
     - run: pnpm --filter ...{handwritten/bigtable} run --if-present compile
     - run: go version
     - run: .kokoro/conformance.sh
diff --git a/.github/workflows/continuous.yaml b/.github/workflows/continuous.yaml
index 08d179d4fac..2c844e2e60f 100644
--- a/.github/workflows/continuous.yaml
+++ b/.github/workflows/continuous.yaml
@@ -20,26 +20,7 @@ jobs:
         uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6.5.0
         with:
           node-version: ${{ matrix.node }}
-      - uses: pnpm/action-setup@b906affcce14559ad1aafd4ab0e942779e9f58b1 # v4
-      - name: Install Workspace Dependencies (Frozen Lockfile)
-        run: |
-          if ! pnpm install --frozen-lockfile --ignore-scripts; then
-            echo "::error title=PNPM Lockfile Out of Date::The pnpm-lock.yaml file is out of sync with workspace package.json dependencies."
-            echo ""
-            echo "===================================================================================================="
-            echo "❌ PNPM Lockfile Out of Date (ERR_PNPM_OUTDATED_LOCKFILE)"
-            echo ""
-            echo "One or more package.json files have changed or were merged without updating pnpm-lock.yaml."
-            echo ""
-            echo "To resolve this failure, please update the lockfile locally and commit the result:"
-            echo "    pnpm install --no-frozen-lockfile"
-            echo "    git add pnpm-lock.yaml"
-            echo "    git commit -m \"chore: update pnpm-lock.yaml\""
-            echo "    git push"
-            echo "===================================================================================================="
-            echo ""
-            exit 1
-          fi
+      - uses: ./.github/actions/pnpm-lockfile-check
       - run: node --version
       - run: ci/run_conditional_tests.sh
         name: Run unit tests
diff --git a/.github/workflows/mandatory-conformance.yaml b/.github/workflows/mandatory-conformance.yaml
index 12c0ca9266c..d6caf0830a5 100644
--- a/.github/workflows/mandatory-conformance.yaml
+++ b/.github/workflows/mandatory-conformance.yaml
@@ -52,26 +52,7 @@ jobs:
       with:
         go-version: '>=1.20.2'
     - run: chmod +x .kokoro/mandatory-conformance.sh
-    - uses: pnpm/action-setup@b906affcce14559ad1aafd4ab0e942779e9f58b1 # v4
-    - name: Install Workspace Dependencies (Frozen Lockfile)
-      run: |
-        if ! pnpm install --frozen-lockfile --ignore-scripts; then
-          echo "::error title=PNPM Lockfile Out of Date::The pnpm-lock.yaml file is out of sync with workspace package.json dependencies."
-          echo ""
-          echo "===================================================================================================="
-          echo "❌ PNPM Lockfile Out of Date (ERR_PNPM_OUTDATED_LOCKFILE)"
-          echo ""
-          echo "One or more package.json files have changed or were merged without updating pnpm-lock.yaml."
-          echo ""
-          echo "To resolve this failure, please update the lockfile locally and commit the result:"
-          echo "    pnpm install --no-frozen-lockfile"
-          echo "    git add pnpm-lock.yaml"
-          echo "    git commit -m \"chore: update pnpm-lock.yaml\""
-          echo "    git push"
-          echo "===================================================================================================="
-          echo ""
-          exit 1
-        fi
+    - uses: ./.github/actions/pnpm-lockfile-check
     - run: pnpm --filter ...{handwritten/bigtable} run --if-present compile
     - run: go version
     - run: .kokoro/mandatory-conformance.sh
diff --git a/.github/workflows/presubmit-bun.yml b/.github/workflows/presubmit-bun.yml
index 3543f8f6ab5..b5006cf8a93 100644
--- a/.github/workflows/presubmit-bun.yml
+++ b/.github/workflows/presubmit-bun.yml
@@ -36,26 +36,7 @@ jobs:
         uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6.5.0
         with:
           node-version: ${{ matrix.node-version }}
-      - uses: pnpm/action-setup@b906affcce14559ad1aafd4ab0e942779e9f58b1 # v4
-      - name: Install Workspace Dependencies (Frozen Lockfile)
-        run: |
-          if ! pnpm install --frozen-lockfile --ignore-scripts; then
-            echo "::error title=PNPM Lockfile Out of Date::The pnpm-lock.yaml file is out of sync with workspace package.json dependencies."
-            echo ""
-            echo "===================================================================================================="
-            echo "❌ PNPM Lockfile Out of Date (ERR_PNPM_OUTDATED_LOCKFILE)"
-            echo ""
-            echo "One or more package.json files have changed or were merged without updating pnpm-lock.yaml."
-            echo ""
-            echo "To resolve this failure, please update the lockfile locally and commit the result:"
-            echo "    pnpm install --no-frozen-lockfile"
-            echo "    git add pnpm-lock.yaml"
-            echo "    git commit -m \"chore: update pnpm-lock.yaml\""
-            echo "    git push"
-            echo "===================================================================================================="
-            echo ""
-            exit 1
-          fi
+      - uses: ./.github/actions/pnpm-lockfile-check
       - name: Cache Turborepo
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with:
diff --git a/.github/workflows/presubmit.yaml b/.github/workflows/presubmit.yaml
index 4f44111d5ee..bcbc2ae0347 100644
--- a/.github/workflows/presubmit.yaml
+++ b/.github/workflows/presubmit.yaml
@@ -48,26 +48,7 @@ jobs:
         uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6.5.0
         with:
           node-version: 24
-      - uses: pnpm/action-setup@b906affcce14559ad1aafd4ab0e942779e9f58b1 # v4
-      - name: Install Workspace Dependencies (Frozen Lockfile)
-        run: |
-          if ! pnpm install --frozen-lockfile --ignore-scripts; then
-            echo "::error title=PNPM Lockfile Out of Date::The pnpm-lock.yaml file is out of sync with workspace package.json dependencies."
-            echo ""
-            echo "===================================================================================================="
-            echo "❌ PNPM Lockfile Out of Date (ERR_PNPM_OUTDATED_LOCKFILE)"
-            echo ""
-            echo "One or more package.json files have changed or were merged without updating pnpm-lock.yaml."
-            echo ""
-            echo "To resolve this failure, please update the lockfile locally and commit the result:"
-            echo "    pnpm install --no-frozen-lockfile"
-            echo "    git add pnpm-lock.yaml"
-            echo "    git commit -m \"chore: update pnpm-lock.yaml\""
-            echo "    git push"
-            echo "===================================================================================================="
-            echo ""
-            exit 1
-          fi
+      - uses: ./.github/actions/pnpm-lockfile-check
       - name: Cache Turborepo
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with:
diff --git a/.github/workflows/storage-conformance.yaml b/.github/workflows/storage-conformance.yaml
index 7e27fc24cc4..3a1fd0d5236 100644
--- a/.github/workflows/storage-conformance.yaml
+++ b/.github/workflows/storage-conformance.yaml
@@ -22,25 +22,6 @@ jobs:
         with:
           node-version: 22
       - run: node --version
-      - uses: pnpm/action-setup@b906affcce14559ad1aafd4ab0e942779e9f58b1 # v4
-      - name: Install Workspace Dependencies (Frozen Lockfile)
-        run: |
-          if ! pnpm install --frozen-lockfile --ignore-scripts; then
-            echo "::error title=PNPM Lockfile Out of Date::The pnpm-lock.yaml file is out of sync with workspace package.json dependencies."
-            echo ""
-            echo "===================================================================================================="
-            echo "❌ PNPM Lockfile Out of Date (ERR_PNPM_OUTDATED_LOCKFILE)"
-            echo ""
-            echo "One or more package.json files have changed or were merged without updating pnpm-lock.yaml."
-            echo ""
-            echo "To resolve this failure, please update the lockfile locally and commit the result:"
-            echo "    pnpm install --no-frozen-lockfile"
-            echo "    git add pnpm-lock.yaml"
-            echo "    git commit -m \"chore: update pnpm-lock.yaml\""
-            echo "    git push"
-            echo "===================================================================================================="
-            echo ""
-            exit 1
-          fi
+      - uses: ./.github/actions/pnpm-lockfile-check
       - run: pnpm --filter ...{handwritten/storage} run --if-present compile
       - run: cd handwritten/storage && pnpm run conformance-test