diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 25cb2c5e..efb3807e 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -28,7 +28,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: ./.github/workflows/install
+      - uses: api2r/actions/install@v1
         with:
           use-container: "${{ matrix.config.container != '' }}"
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/copilot-setup-steps.yml b/.github/workflows/copilot-setup-steps.yml
index ae9a04bb..e1907e16 100644
--- a/.github/workflows/copilot-setup-steps.yml
+++ b/.github/workflows/copilot-setup-steps.yml
@@ -22,7 +22,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: ./.github/workflows/install
+      - uses: api2r/actions/install@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           cache-version: copilot
@@ -45,6 +45,7 @@ jobs:
             any::testthat
             any::usethis
             any::withr
+            Gilead-BioStats/qcthat
             local::.
 
       - name: Install air
diff --git a/.github/workflows/install/action.yml b/.github/workflows/install/action.yml
deleted file mode 100644
index ff4ba5e1..00000000
--- a/.github/workflows/install/action.yml
+++ /dev/null
@@ -1,118 +0,0 @@
-name: "Install R and dependencies"
-description: "Set up pandoc, R, and package dependencies"
-inputs:
-  token:
-    description: "GitHub token, set to secrets.GITHUB_TOKEN"
-    required: true
-  r-version:
-    description: "R version, passed to r-lib/actions/setup-r@v2"
-    required: false
-    default: release
-  http-user-agent:
-    description: "HTTP user agent, passed to r-lib/actions/setup-r@v2"
-    required: false
-    default: ""
-  needs:
-    description: "Config/Needs tag(s), passed to r-lib/actions/setup-r-dependencies@v2"
-    required: false
-    default: ""
-  extra-packages:
-    description: "Extra packages, passed to r-lib/actions/setup-r-dependencies@v2"
-    required: false
-    default: any::rcmdcheck
-  optional-packages:
-    description: "Optional extra packages; installed individually, warn (not error) on failure"
-    required: false
-    default: ""
-  cache-version:
-    description: "Cache version for r-lib/actions/setup-r-dependencies@v2"
-    required: false
-    default: "1"
-  use-container:
-    description: "Set to 'true' when running inside a pre-warmed container (skips R and pandoc setup)"
-    required: false
-    default: "false"
-
-runs:
-  using: "composite"
-  steps:
-    - if: inputs.use-container != 'true'
-      uses: r-lib/actions/setup-pandoc@v2
-
-    - uses: r-lib/actions/setup-r@v2
-      with:
-        install-r: ${{ inputs.use-container != 'true' }}
-        r-version: ${{ inputs.r-version }}
-        http-user-agent: ${{ inputs.http-user-agent }}
-        use-public-rspm: true
-
-    # In pre-warmed containers every package may already be in the system
-    # library, so nothing is ever written to R_LIBS_USER.  Ensure the
-    # directory exists with a sentinel so the actions/cache glob matches
-    # and the "Path Validation Error" warning doesn't fire at cache-save.
-    - if: inputs.use-container == 'true'
-      name: Ensure R_LIBS_USER exists
-      shell: bash
-      run: |
-        lib="$(Rscript -e 'cat(Sys.getenv("R_LIBS_USER"))')"
-        mkdir -p "$lib"
-        touch "$lib/.keep"
-
-    # Container path: call pak::pak() directly so it checks .libPaths() and
-    # only installs/updates packages that are genuinely missing or outdated.
-    # setup-r-dependencies always runs a full lockfile-create → lockfile-install
-    # cycle which reinstalls everything even when the container already has it.
-    - if: inputs.use-container == 'true'
-      name: Update R package dependencies (container)
-      shell: Rscript {0}
-      env:
-        GITHUB_PAT: ${{ inputs.token }}
-      run: |
-        # Replicate needs → Config/Needs/<field> expansion from r-lib/actions
-        needs_parts <- strsplit("${{ inputs.needs }}", "[[:space:],]+")[[1]]
-        needs_parts <- needs_parts[nzchar(needs_parts)]
-        needs <- sprintf("Config/Needs/%s", needs_parts)
-
-        extra_deps <- strsplit("${{ inputs.extra-packages }}", "[[:space:],]+")[[1]]
-        extra_deps <- extra_deps[nzchar(extra_deps)]
-
-        # Over-protect for strangeness in the container
-        if (!requireNamespace("pak", quietly = TRUE)) {
-          install.packages("pak")
-        }
-
-        pak::pak(
-          c("deps::.", extra_deps),
-          dependencies = c(needs, "all"),
-          upgrade = TRUE,
-          ask = FALSE
-        )
-
-    # Non-container path: standard setup-r-dependencies flow with caching.
-    - if: inputs.use-container != 'true'
-      uses: r-lib/actions/setup-r-dependencies@v2
-      env:
-        GITHUB_PAT: ${{ inputs.token }}
-      with:
-        needs: ${{ inputs.needs }}
-        extra-packages: ${{ inputs.extra-packages }}
-        cache-version: ${{ inputs.cache-version }}
-
-    - if: inputs.optional-packages != ''
-      name: Install optional packages
-      shell: Rscript {0}
-      env:
-        GITHUB_PAT: ${{ inputs.token }}
-      run: |
-        pkgs <- strsplit("${{ inputs.optional-packages }}", "\\s+")[[1]]
-        pkgs <- pkgs[nzchar(pkgs)]
-        for (pkg in pkgs) {
-          tryCatch(
-            pak::pak(pkg),
-            error = function(e) {
-              msg <- sprintf("Failed to install optional package %s: %s", pkg, conditionMessage(e))
-              msg <- gsub("[\r\n]+", " ", msg)
-              cat("::warning::", msg, "\n", sep = "")
-            }
-          )
-        }
diff --git a/.github/workflows/pkgdown-cleanup.yaml b/.github/workflows/pkgdown-cleanup.yaml
new file mode 100644
index 00000000..d8ea7c2b
--- /dev/null
+++ b/.github/workflows/pkgdown-cleanup.yaml
@@ -0,0 +1,33 @@
+# This workflow removes the pkgdown preview directory when a PR is closed.
+name: Clean up pkgdown preview
+
+on:
+  pull_request:
+    types: [closed]
+
+permissions:
+  contents: write
+
+jobs:
+  clean-pr-preview:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout gh-pages branch
+        uses: actions/checkout@v6
+        with:
+          repository: ${{ github.repository }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+          ref: gh-pages
+
+      - name: Remove PR preview directory
+        run: |
+          pr_dir="pr/${{ github.event.number }}"
+          if [ -d "$pr_dir" ]; then
+            git config --local user.name "$GITHUB_ACTOR"
+            git config --local user.email "$GITHUB_ACTOR@users.noreply.github.com"
+            git rm -rf "$pr_dir"
+            git commit -m "Remove preview for PR #${{ github.event.number }}"
+            git push
+          else
+            echo "Directory $pr_dir does not exist, skipping cleanup."
+          fi
diff --git a/.github/workflows/pkgdown.yaml b/.github/workflows/pkgdown.yaml
index afc5f447..7f4f411e 100644
--- a/.github/workflows/pkgdown.yaml
+++ b/.github/workflows/pkgdown.yaml
@@ -27,7 +27,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: ./.github/workflows/install
+      - uses: api2r/actions/install@v1
         with:
           use-container: "true"
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/pr-commands.yaml b/.github/workflows/pr-commands.yaml
index 8c94262a..8c2f575f 100644
--- a/.github/workflows/pr-commands.yaml
+++ b/.github/workflows/pr-commands.yaml
@@ -22,7 +22,7 @@ jobs:
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
-      - uses: ./.github/workflows/install
+      - uses: api2r/actions/install@v1
         with:
           use-container: "true"
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/qcthat.yaml b/.github/workflows/qcthat.yaml
index a6ea54c7..2adec848 100644
--- a/.github/workflows/qcthat.yaml
+++ b/.github/workflows/qcthat.yaml
@@ -58,7 +58,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: ./.github/workflows/install
+      - uses: api2r/actions/install@v1
         with:
           use-container: "true"
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/test-coverage.yaml b/.github/workflows/test-coverage.yaml
index 6878a499..8b7a5f30 100644
--- a/.github/workflows/test-coverage.yaml
+++ b/.github/workflows/test-coverage.yaml
@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: ./.github/workflows/install
+      - uses: api2r/actions/install@v1
         with:
           use-container: "true"
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.gitignore b/.gitignore
index 5af056fc..746f277f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ inst/doc
 docs
 /.positai/
 conversation-export*.json
+.positai