diff --git a/.github/actions/build/build-wheel/action.yml b/.github/actions/build/build-wheel/action.yml
index c80660e..c2f0cc8 100644
--- a/.github/actions/build/build-wheel/action.yml
+++ b/.github/actions/build/build-wheel/action.yml
@@ -5,7 +5,7 @@ runs:
   using: composite
   steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/setup/install-python-core@main
+      - uses: ./.github/actions/setup/install-python-core
 
       - name: Create wheel
         run: |
diff --git a/.github/actions/build/verify-structure/action.yml b/.github/actions/build/verify-structure/action.yml
index f6b0d04..81b4534 100644
--- a/.github/actions/build/verify-structure/action.yml
+++ b/.github/actions/build/verify-structure/action.yml
@@ -5,7 +5,7 @@ runs:
   using: composite
   steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/setup/install-python-core@main
+      - uses: ./.github/actions/setup/install-python-core
 
       - name: Download wheel artifact
         uses: actions/download-artifact@v7
diff --git a/.github/actions/ci/bandit/action.yml b/.github/actions/ci/bandit/action.yml
index c8ecc9b..e85f247 100644
--- a/.github/actions/ci/bandit/action.yml
+++ b/.github/actions/ci/bandit/action.yml
@@ -5,7 +5,7 @@ runs:
   using: composite
   steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/setup/install-python-dev@main
+      - uses: ./.github/actions/setup/install-python-dev
 
       - name: Security check
         run: |
diff --git a/.github/actions/ci/mypy/action.yml b/.github/actions/ci/mypy/action.yml
index 5e7c76f..bf6c380 100644
--- a/.github/actions/ci/mypy/action.yml
+++ b/.github/actions/ci/mypy/action.yml
@@ -5,7 +5,7 @@ runs:
   using: composite
   steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/setup/install-python-dev@main
+      - uses: ./.github/actions/setup/install-python-dev
 
       - name: Check with mypy
         run: |
diff --git a/.github/actions/ci/pip-audit/action.yml b/.github/actions/ci/pip-audit/action.yml
index 3e2d5e5..e971ee2 100644
--- a/.github/actions/ci/pip-audit/action.yml
+++ b/.github/actions/ci/pip-audit/action.yml
@@ -5,7 +5,7 @@ runs:
   using: composite
   steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/setup/install-python-dev@main
+      - uses: ./.github/actions/setup/install-python-dev
 
       - name: Audit dependencies
         run: |
diff --git a/.github/actions/ci/pytest/action.yml b/.github/actions/ci/pytest/action.yml
index 6022d8b..4be08a3 100644
--- a/.github/actions/ci/pytest/action.yml
+++ b/.github/actions/ci/pytest/action.yml
@@ -5,7 +5,7 @@ runs:
   using: composite
   steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/setup/install-python-dev@main
+      - uses: ./.github/actions/setup/install-python-dev
 
       - name: Test with pytest
         run: |
diff --git a/.github/actions/ci/ruff/action.yml b/.github/actions/ci/ruff/action.yml
index 4d8b621..527844e 100644
--- a/.github/actions/ci/ruff/action.yml
+++ b/.github/actions/ci/ruff/action.yml
@@ -5,7 +5,7 @@ runs:
   using: composite
   steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/setup/install-python-dev@main
+      - uses: ./.github/actions/setup/install-python-dev
 
       - name: Check with ruff
         run: |
diff --git a/.github/actions/ci/validate-pyproject/action.yml b/.github/actions/ci/validate-pyproject/action.yml
index 6b8ee0b..f851057 100644
--- a/.github/actions/ci/validate-pyproject/action.yml
+++ b/.github/actions/ci/validate-pyproject/action.yml
@@ -5,7 +5,7 @@ runs:
   using: composite
   steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/setup/install-python-dev@main
+      - uses: ./.github/actions/setup/install-python-dev
 
       - name: Validate pyproject.toml
         run: |
diff --git a/.github/actions/ci/version-check/action.yml b/.github/actions/ci/version-check/action.yml
index e4183d9..370d775 100644
--- a/.github/actions/ci/version-check/action.yml
+++ b/.github/actions/ci/version-check/action.yml
@@ -11,7 +11,7 @@ runs:
   using: composite
   steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/setup/install-python-dev@main
+      - uses: ./.github/actions/setup/install-python-dev
 
       - name: Check version consistency
         run: |
diff --git a/.github/actions/setup/install-python-core/action.yml b/.github/actions/setup/install-python-core/action.yml
index 4b8b66f..abb9ddc 100644
--- a/.github/actions/setup/install-python-core/action.yml
+++ b/.github/actions/setup/install-python-core/action.yml
@@ -5,7 +5,7 @@ runs:
   using: composite
   steps:
     - uses: actions/checkout@v6
-    - uses: ./.github/actions/setup/setup-uv-python@main
+    - uses: ./.github/actions/setup/setup-uv-python
 
     - name: Install dependencies
       run: |
diff --git a/.github/actions/setup/install-python-dev/action.yml b/.github/actions/setup/install-python-dev/action.yml
index ffed8e8..53a033e 100644
--- a/.github/actions/setup/install-python-dev/action.yml
+++ b/.github/actions/setup/install-python-dev/action.yml
@@ -5,7 +5,7 @@ runs:
   using: composite
   steps:
     - uses: actions/checkout@v6
-    - uses: ./.github/actions/setup/setup-uv-python@main
+    - uses: ./.github/actions/setup/setup-uv-python
 
     - name: Install dependencies
       run: |
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 518bfba..b122236 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,11 +16,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/build/build-wheel@main
+      - uses: ./.github/actions/build/build-wheel
 
   verify-structure:
     runs-on: ubuntu-latest
     needs: build-wheel
     steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/build/verify-structure@main
+      - uses: ./.github/actions/build/verify-structure
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1e369d2..3efb5c6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,40 +16,40 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/ci/validate-pyproject@main
+      - uses: ./.github/actions/ci/validate-pyproject
 
   ruff:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/ci/ruff@main
+      - uses: ./.github/actions/ci/ruff
 
   mypy:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/ci/mypy@main
+      - uses: ./.github/actions/ci/mypy
 
   pytest:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/ci/pytest@main
+      - uses: ./.github/actions/ci/pytest
 
   bandit:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/ci/bandit@main
+      - uses: ./.github/actions/ci/bandit
 
   pip-audit:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/ci/pip-audit@main
+      - uses: ./.github/actions/ci/pip-audit
 
   version-check:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: ./.github/actions/ci/version-check@main
+      - uses: ./.github/actions/ci/version-check