diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 38e65f3..869fa94 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -55,7 +55,7 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     # Add any setup steps before running the `github/codeql-action/init` action.
     # This includes steps like installing compilers or runtimes (`actions/setup-node`
diff --git a/.github/workflows/comprehensive-quality.yml b/.github/workflows/comprehensive-quality.yml
index eca6f0b..4e4cad5 100644
--- a/.github/workflows/comprehensive-quality.yml
+++ b/.github/workflows/comprehensive-quality.yml
@@ -11,7 +11,7 @@ jobs:
   dependability:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check test coverage
         run: |
           echo "Checking for test files..."
@@ -30,7 +30,7 @@ jobs:
   security:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Secret scanning
         uses: trufflesecurity/trufflehog@main
         continue-on-error: true
@@ -50,7 +50,7 @@ jobs:
   interoperability:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check API specs
         run: |
           if [ -f "openapi.yaml" ] || [ -f "openapi.json" ]; then
@@ -67,7 +67,7 @@ jobs:
   validation:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check for validation patterns
         run: |
           VALIDATION=$(grep -rE "validate|sanitize|Schema|Validator" --include="*.rs" --include="*.res" --include="*.ex" . 2>/dev/null | wc -l || echo "0")
@@ -81,7 +81,7 @@ jobs:
       contents: read
       attestations: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Generate SBOM
         run: |
           echo "SBOM generation would run here"
@@ -97,7 +97,7 @@ jobs:
   verification:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check SPARK proofs
         run: |
           if find . -name "*.ads" | grep -q .; then
@@ -113,7 +113,7 @@ jobs:
   functionality:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check TODOs and FIXMEs
         run: |
           echo "=== Incomplete items ==="
@@ -126,7 +126,7 @@ jobs:
   performance:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check for benchmarks
         run: |
           BENCHES=$(find . -name "*bench*" -o -name "*perf*" | wc -l)
@@ -143,7 +143,7 @@ jobs:
     runs-on: ubuntu-latest
     if: hashFiles('**/*.html') != ''
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: HTML accessibility check
         run: |
           echo "Checking for a11y attributes..."
@@ -157,7 +157,7 @@ jobs:
   license:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check license files
         run: |
           if [ -f "LICENSE" ] || [ -f "LICENSE.txt" ] || [ -f "LICENSE.md" ]; then
@@ -175,7 +175,7 @@ jobs:
   documentation:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check docs completeness
         run: |
           DOCS=""
diff --git a/.github/workflows/guix-nix-policy.yml b/.github/workflows/guix-nix-policy.yml
index a776006..6771253 100644
--- a/.github/workflows/guix-nix-policy.yml
+++ b/.github/workflows/guix-nix-policy.yml
@@ -4,7 +4,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Enforce Guix primary / Nix fallback
         run: |
           # Check for package manager files
diff --git a/.github/workflows/jekyll-gh-pages.yml b/.github/workflows/jekyll-gh-pages.yml
index e31d81c..e729658 100644
--- a/.github/workflows/jekyll-gh-pages.yml
+++ b/.github/workflows/jekyll-gh-pages.yml
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Pages
         uses: actions/configure-pages@v5
       - name: Build with Jekyll
@@ -36,7 +36,7 @@ jobs:
           source: ./
           destination: ./_site
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
 
   # Deployment job
   deploy:
diff --git a/.github/workflows/quality.yml b/.github/workflows/quality.yml
index eb78d2c..c1a7b7a 100644
--- a/.github/workflows/quality.yml
+++ b/.github/workflows/quality.yml
@@ -5,7 +5,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       
       - name: Check file permissions
         run: |
@@ -35,7 +35,7 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check documentation
         run: |
           MISSING=""
diff --git a/.github/workflows/rsr-antipattern.yml b/.github/workflows/rsr-antipattern.yml
index ac08939..e6ce6a0 100644
--- a/.github/workflows/rsr-antipattern.yml
+++ b/.github/workflows/rsr-antipattern.yml
@@ -16,7 +16,7 @@ jobs:
   antipattern-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Check for TypeScript
         run: |
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index a073b17..c1071e6 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -14,17 +14,17 @@ jobs:
       security-events: write
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       
       - name: Run Scorecard
-        uses: ossf/scorecard-action@v2.3.1
+        uses: ossf/scorecard-action@v2.4.3
         with:
           results_file: results.sarif
           results_format: sarif
       
       - name: Upload results
-        uses: github/codeql-action/upload-sarif@v3
+        uses: github/codeql-action/upload-sarif@v4
         with:
           sarif_file: results.sarif
diff --git a/.github/workflows/security-policy.yml b/.github/workflows/security-policy.yml
index c20bbc7..a9d7c0f 100644
--- a/.github/workflows/security-policy.yml
+++ b/.github/workflows/security-policy.yml
@@ -4,7 +4,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Security checks
         run: |
           FAILED=false
diff --git a/.github/workflows/ts-blocker.yml b/.github/workflows/ts-blocker.yml
index 43465a3..f31b6cc 100644
--- a/.github/workflows/ts-blocker.yml
+++ b/.github/workflows/ts-blocker.yml
@@ -4,7 +4,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Block new TypeScript/JavaScript
         run: |
           NEW_TS=$(git diff --name-only --diff-filter=A HEAD~1 2>/dev/null | grep -E '\.(ts|tsx)$' | grep -v '\.gen\.' || true)
diff --git a/.github/workflows/wellknown-enforcement.yml b/.github/workflows/wellknown-enforcement.yml
index 809d209..2108364 100644
--- a/.github/workflows/wellknown-enforcement.yml
+++ b/.github/workflows/wellknown-enforcement.yml
@@ -17,7 +17,7 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       
       - name: RFC 9116 security.txt validation
         run: |