diff --git a/.github/workflows/callable-dependency-review.yaml b/.github/workflows/callable-dependency-review.yaml
index a0a3f7a..06e44ac 100644
--- a/.github/workflows/callable-dependency-review.yaml
+++ b/.github/workflows/callable-dependency-review.yaml
@@ -8,6 +8,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: actions/dependency-review-action@v4
+      - uses: actions/dependency-review-action@v5
         with:
           fail-on-severity: high
diff --git a/.github/workflows/callable-labeler.yaml b/.github/workflows/callable-labeler.yaml
index cc48824..8232ae4 100644
--- a/.github/workflows/callable-labeler.yaml
+++ b/.github/workflows/callable-labeler.yaml
@@ -56,6 +56,14 @@ jobs:
                     - 'lambdas/**'
                     - 'api/**'
                     - 'services/**'
+          content:
+            - changed-files:
+                - any-glob-to-any-file:
+                    - '**/*.html'
+                    - '**/*.css'
+                    - 'assets/**'
+                    - 'sitemap.xml'
+                    - 'robots.txt'
           ci:
             - changed-files:
                 - any-glob-to-any-file:
@@ -81,7 +89,7 @@ jobs:
                     - '**/*.test.ts'
                     - '**/*_test.py'
           EOF
-      - uses: actions/labeler@v5
+      - uses: actions/labeler@v6
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           configuration-path: ${{ runner.temp }}/labeler.yml
diff --git a/.github/workflows/cd-cdk.yaml b/.github/workflows/cd-cdk.yaml
index 8bdce3c..9ebb9d0 100644
--- a/.github/workflows/cd-cdk.yaml
+++ b/.github/workflows/cd-cdk.yaml
@@ -55,7 +55,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: docker/setup-qemu-action@v3
+      - uses: docker/setup-qemu-action@v4
         if: ${{ inputs.enable-qemu }}
 
       - uses: actions/setup-dotnet@v5
@@ -67,7 +67,7 @@ jobs:
         if: ${{ inputs.dotnet-publish-project != '' }}
         run: dotnet publish ${{ inputs.dotnet-publish-project }} --configuration Release --runtime linux-arm64 --self-contained false --output $(dirname ${{ inputs.dotnet-publish-project }})/bin/Release/net8.0/linux-arm64/publish
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: ${{ inputs.node-version }}
 
diff --git a/.github/workflows/cd-mobile-ios.yaml b/.github/workflows/cd-mobile-ios.yaml
index 90ad74a..4a808f7 100644
--- a/.github/workflows/cd-mobile-ios.yaml
+++ b/.github/workflows/cd-mobile-ios.yaml
@@ -67,13 +67,13 @@ jobs:
           role-to-assume: ${{ secrets.deploy-role-arn }}
           aws-region: ${{ inputs.region }}
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: ${{ inputs.node-version }}
           cache: npm
           cache-dependency-path: ${{ inputs.cache-dependency-path }}
 
-      - uses: ruby/setup-ruby@afeafc3d1ab54a631816aba4c914a0081c12ff2f # v1
+      - uses: ruby/setup-ruby@12fd324f1d0b43274fdc8130f6980590a667c455 # v1
         with:
           ruby-version: ${{ inputs.ruby-version }}
           bundler-cache: true
diff --git a/.github/workflows/ci-python-sam.yaml b/.github/workflows/ci-python-sam.yaml
index 2e0c019..8aff356 100644
--- a/.github/workflows/ci-python-sam.yaml
+++ b/.github/workflows/ci-python-sam.yaml
@@ -83,13 +83,13 @@ jobs:
 
       - name: Setup Node.js
         if: ${{ inputs.run-cdk-synth }}
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ inputs.node-version }}
 
       - name: Set up QEMU
         if: ${{ inputs.run-cdk-synth && inputs.enable-qemu }}
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@v4
 
       - name: CDK synth
         if: ${{ inputs.run-cdk-synth }}
diff --git a/.github/workflows/ci-static.yaml b/.github/workflows/ci-static.yaml
new file mode 100644
index 0000000..0b764a3
--- /dev/null
+++ b/.github/workflows/ci-static.yaml
@@ -0,0 +1,197 @@
+name: CI — Static Site
+
+# Reusable CI for static HTML/CSS/JS sites (S3 + CloudFront repos). Emits the
+# `ci / ci` status context required by the org "main branch protection" ruleset.
+#
+# Supports two modes:
+#   - Source mode (default): validates HTML in place at the repo root.
+#   - Build mode: set `build-command` (e.g. an Eleventy build) + `check-dir`
+#     (e.g. "_site") so the checks validate the BUILT output that actually
+#     ships — not the source templates. Without this, a templated site's
+#     source has no plain HTML and the checks would pass vacuously.
+#
+# All checks are dependency-light: htmlhint via npx, the rest via python3.
+#
+# Caller example (build mode):
+#   jobs:
+#     ci:
+#       uses: Sea-Haven-Industries/.github/.github/workflows/ci-static.yaml@main
+#       with:
+#         build-command: "npx @11ty/eleventy"
+#         check-dir: "_site"
+
+on:
+  workflow_call:
+    inputs:
+      check-dir:
+        description: "Directory the checks run against (repo root in source mode, build output dir in build mode)"
+        type: string
+        default: "."
+      build-command:
+        description: "Optional build command to run before checks (implies `npm ci` first). Leave empty for source mode."
+        type: string
+        default: ""
+      node-version:
+        description: "Node.js version for build / htmlhint"
+        type: string
+        default: "24"
+      run-htmlhint:
+        description: "Run htmlhint structural validation"
+        type: boolean
+        default: true
+      run-jsonld-check:
+        description: "Validate every application/ld+json block parses as JSON"
+        type: boolean
+        default: true
+      run-sitemap-check:
+        description: "Validate sitemap.xml is well-formed XML (if present)"
+        type: boolean
+        default: true
+      run-link-check:
+        description: "Verify root-relative internal links and asset references resolve to files"
+        type: boolean
+        default: true
+      run-conventions-check:
+        description: "Require README.md and a .gitignore that covers .env (always run against repo root)"
+        type: boolean
+        default: true
+
+permissions:
+  contents: read
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    concurrency:
+      group: ci-static-${{ github.workflow }}-${{ github.ref }}
+      cancel-in-progress: true
+    env:
+      CHECK_DIR: ${{ inputs.check-dir }}
+      BUILD_COMMAND: ${{ inputs.build-command }}
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: actions/setup-node@v6
+        if: ${{ inputs.run-htmlhint || inputs.build-command != '' }}
+        with:
+          node-version: ${{ inputs.node-version }}
+
+      - name: Build site
+        if: ${{ inputs.build-command != '' }}
+        run: |
+          npm ci
+          # build-command passed via env to avoid expression injection into the script body
+          eval "$BUILD_COMMAND"
+          if [[ ! -d "$CHECK_DIR" ]]; then
+            echo "::error::build-command did not produce check-dir '$CHECK_DIR'"
+            exit 1
+          fi
+
+      - name: HTMLHint
+        if: ${{ inputs.run-htmlhint }}
+        run: |
+          cat > "${RUNNER_TEMP}/.htmlhintrc" <<'EOF'
+          {
+            "tagname-lowercase": true,
+            "attr-lowercase": true,
+            "attr-value-double-quotes": true,
+            "doctype-first": true,
+            "doctype-html5": true,
+            "tag-pair": true,
+            "spec-char-escape": false,
+            "id-unique": true,
+            "src-not-empty": true,
+            "attr-no-duplication": true,
+            "title-require": true,
+            "alt-require": true
+          }
+          EOF
+          npx --yes htmlhint --config "${RUNNER_TEMP}/.htmlhintrc" "${CHECK_DIR%/}/**/*.html"
+
+      - name: Validate JSON-LD blocks
+        if: ${{ inputs.run-jsonld-check }}
+        run: |
+          python3 - <<'PY'
+          import glob, json, os, re, sys
+          base = os.environ.get("CHECK_DIR", ".")
+          errs = 0
+          for path in sorted(glob.glob(os.path.join(base, "**/*.html"), recursive=True)):
+              html = open(path, encoding="utf-8").read()
+              for m in re.finditer(
+                  r'<script[^>]*type="application/ld\+json"[^>]*>(.*?)</script>', html, re.S
+              ):
+                  try:
+                      json.loads(m.group(1).strip())
+                  except Exception as e:
+                      print(f"::error file={path}::Invalid JSON-LD: {e}")
+                      errs += 1
+          print("All JSON-LD blocks valid." if not errs else f"{errs} invalid JSON-LD block(s).")
+          sys.exit(1 if errs else 0)
+          PY
+
+      - name: Validate sitemap.xml
+        if: ${{ inputs.run-sitemap-check }}
+        run: |
+          python3 - <<'PY'
+          import os, sys, xml.dom.minidom as M
+          base = os.environ.get("CHECK_DIR", ".")
+          p = os.path.join(base, "sitemap.xml")
+          errs = 0
+          if os.path.exists(p):
+              try:
+                  M.parse(p)
+                  print("sitemap.xml is well-formed.")
+              except Exception as e:
+                  print(f"::error file={p}::Malformed XML: {e}")
+                  errs += 1
+          else:
+              print(f"::warning::No sitemap.xml found in {base}")
+          sys.exit(1 if errs else 0)
+          PY
+
+      - name: Check internal links and asset references
+        if: ${{ inputs.run-link-check }}
+        run: |
+          python3 - <<'PY'
+          import glob, os, re, sys
+          base = os.environ.get("CHECK_DIR", ".")
+          errs = 0
+          for path in sorted(glob.glob(os.path.join(base, "**/*.html"), recursive=True)):
+              html = open(path, encoding="utf-8").read()
+              for attr in ("href", "src"):
+                  for m in re.finditer(rf'{attr}="([^"]+)"', html):
+                      url = m.group(1)
+                      if re.match(r'^(https?:|mailto:|tel:|#|data:|//|javascript:)', url):
+                          continue
+                      target = url.split("?")[0].split("#")[0]
+                      if not target.startswith("/"):
+                          continue  # root-relative is the repo convention
+                      rel = target.lstrip("/")
+                      cands = (
+                          os.path.join(base, rel),
+                          os.path.join(base, rel, "index.html"),
+                      )
+                      if not any(os.path.exists(c) for c in cands):
+                          print(f"::error file={path}::Broken internal reference: {url}")
+                          errs += 1
+          print("All internal references resolve." if not errs else f"{errs} broken internal reference(s).")
+          sys.exit(1 if errs else 0)
+          PY
+
+      - name: Conventions check
+        if: ${{ inputs.run-conventions-check }}
+        run: |
+          errors=0
+          fail() { echo "::error::$1"; errors=$((errors + 1)); }
+          [[ -f README.md ]] || fail "Missing README.md"
+          if [[ -f .gitignore ]]; then
+            grep -qE '^\.env$|^\.env\b' .gitignore || fail ".gitignore does not include .env"
+          else
+            fail "Missing .gitignore"
+          fi
+          if [[ $errors -gt 0 ]]; then
+            echo "Conventions check failed with $errors error(s)."
+            exit 1
+          fi
+          echo "Conventions check passed."
diff --git a/.github/workflows/ci-typescript-cdk.yaml b/.github/workflows/ci-typescript-cdk.yaml
index adc2dc7..03a080d 100644
--- a/.github/workflows/ci-typescript-cdk.yaml
+++ b/.github/workflows/ci-typescript-cdk.yaml
@@ -66,7 +66,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: docker/setup-qemu-action@v3
+      - uses: docker/setup-qemu-action@v4
         if: ${{ inputs.enable-qemu }}
 
       - uses: actions/setup-dotnet@v5
@@ -78,7 +78,7 @@ jobs:
         if: ${{ inputs.dotnet-publish-project != '' }}
         run: dotnet publish ${{ inputs.dotnet-publish-project }} --configuration Release --runtime linux-arm64 --self-contained
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: ${{ inputs.node-version }}
           cache: npm
diff --git a/.github/workflows/compliance-audit.yaml b/.github/workflows/compliance-audit.yaml
index 20754a5..96c4409 100644
--- a/.github/workflows/compliance-audit.yaml
+++ b/.github/workflows/compliance-audit.yaml
@@ -76,7 +76,7 @@ jobs:
 
       - name: Run compliance audit
         id: audit
-        uses: anthropics/claude-code-action@41ea7642c1436fa0ee57aae58347904b71a5af27 # v1
+        uses: anthropics/claude-code-action@0f97b95b6536c26e5f6bd90faec370d41695beca # v1
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           prompt: |