diff --git a/.github/workflows/check-links.yml b/.github/workflows/check-links.yml
index 1418dfce..f522f853 100644
--- a/.github/workflows/check-links.yml
+++ b/.github/workflows/check-links.yml
@@ -8,7 +8,7 @@ jobs:
   check-links:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: gaurav-nelson/github-action-markdown-link-check@v1
         with:
           use-quiet-mode: 'yes'
diff --git a/.github/workflows/ci_template.yml b/.github/workflows/ci_template.yml
index 7b92db8b..dee4b4f8 100644
--- a/.github/workflows/ci_template.yml
+++ b/.github/workflows/ci_template.yml
@@ -24,7 +24,7 @@ jobs:
         os: ${{fromJson(inputs.os)}}
         python-version: ${{fromJson(inputs.python-version)}}
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python-version }}
@@ -36,7 +36,7 @@ jobs:
       run: pytest
 
     - name: Upload coverage to Codecov
-      if: success() && (matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10')
+      if: success() && (matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10') && secrets.codecov_token != ''
       uses: codecov/codecov-action@v5
       with:
         fail_ci_if_error: true
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 57de8ade..383a7ba6 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v6
         with:
@@ -39,7 +39,7 @@ jobs:
     name: Build source distribution
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
 
@@ -97,7 +97,7 @@ jobs:
     needs: publish-PyPI
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Build draft PDF
         uses: openjournals/openjournals-draft-action@master
         with:
@@ -118,7 +118,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v6
         with:
diff --git a/workspace/memory/brain.db b/workspace/memory/brain.db
new file mode 100644
index 00000000..d59de69c
Binary files /dev/null and b/workspace/memory/brain.db differ