diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 5b5f93b..bfd708d 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -1,3 +1,5 @@
+# Calls the shared CTTIR workflow. Do not add steps here - change the
+# shared one at CTTIR/.github so every package moves together.
 on:
   push:
     branches: [main, master]
@@ -10,42 +12,4 @@ permissions: read-all
 
 jobs:
   R-CMD-check:
-    runs-on: ${{ matrix.config.os }}
-
-    name: ${{ matrix.config.os }} (${{ matrix.config.r }})
-
-    strategy:
-      fail-fast: false
-      matrix:
-        config:
-          - {os: macos-latest,   r: 'release'}
-          - {os: windows-latest, r: 'release'}
-          - {os: ubuntu-latest,  r: 'devel', http-user-agent: 'release'}
-          - {os: ubuntu-latest,  r: 'release'}
-          - {os: ubuntu-latest,  r: 'oldrel-1'}
-
-    env:
-      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
-      R_KEEP_PKG_SOURCE: yes
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: r-lib/actions/setup-pandoc@v2
-
-      - uses: r-lib/actions/setup-r@v2
-        with:
-          r-version: ${{ matrix.config.r }}
-          http-user-agent: ${{ matrix.config.http-user-agent }}
-          use-public-rspm: true
-          extra-repositories: https://cttir.r-universe.dev
-
-      - uses: r-lib/actions/setup-r-dependencies@v2
-        with:
-          extra-packages: any::rcmdcheck
-          needs: check
-
-      - uses: r-lib/actions/check-r-package@v2
-        with:
-          upload-snapshots: true
-          build_args: 'c("--no-manual","--compact-vignettes=gs+qpdf")'
+    uses: CTTIR/.github/.github/workflows/R-CMD-check.yaml@main
diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
new file mode 100644
index 0000000..c1ccbce
--- /dev/null
+++ b/.github/workflows/lint.yaml
@@ -0,0 +1,16 @@
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+name: lint
+
+permissions: read-all
+
+jobs:
+  lint:
+    uses: CTTIR/.github/.github/workflows/lint.yaml@main
+    with:
+      # Report-only until this package house-linter count reaches zero.
+      blocking: false
diff --git a/.github/workflows/test-coverage.yaml b/.github/workflows/test-coverage.yaml
index 8aa3ae4..bb19507 100644
--- a/.github/workflows/test-coverage.yaml
+++ b/.github/workflows/test-coverage.yaml
@@ -10,28 +10,10 @@ permissions: read-all
 
 jobs:
   test-coverage:
-    runs-on: ubuntu-latest
-    env:
-      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: r-lib/actions/setup-r@v2
-        with:
-          use-public-rspm: true
-          extra-repositories: https://cttir.r-universe.dev
-
-      - uses: r-lib/actions/setup-r-dependencies@v2
-        with:
-          extra-packages: any::covr
-          needs: coverage
-
-      - name: Test coverage
-        run: |
-          covr::codecov(
-            quiet = FALSE,
-            clean = FALSE,
-            install_path = file.path(normalizePath(Sys.getenv("RUNNER_TEMP"), winslash = "/"), "package")
-          )
-        shell: Rscript {0}
+    uses: CTTIR/.github/.github/workflows/test-coverage.yaml@main
+    with:
+      # Report-only for now. The shared workflow computes coverage with covr
+      # and an explicit exit rather than delegating the gate to Codecov;
+      # set a real floor once this package is re-baselined.
+      floor: 0
+    secrets: inherit