diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..c9e0840
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,38 @@
+# top-most EditorConfig file
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# Visual Studio Spell checker configs (https://learn.microsoft.com/en-us/visualstudio/ide/text-spell-checker?view=vs-2022#how-to-customize-the-spell-checker)
+spelling_exclusion_path  = ./exclusion.dic
+
+[*.cs]
+indent_size = 4
+charset = utf-8-bom
+end_of_line = unset
+
+# Solution files
+[*.{sln,slnx}]
+end_of_line = unset
+
+# MSBuild project files
+[*.{csproj,props,targets}]
+end_of_line = unset
+
+# Xml config files
+[*.{ruleset,config,nuspec,resx,runsettings,DotSettings}]
+end_of_line = unset
+
+# C# code style settings
+[*.{cs}]
+dotnet_diagnostic.IDE0044.severity = none # IDE0044: Make field readonly
+
+# https://stackoverflow.com/questions/79195382/how-to-disable-fading-unused-methods-in-visual-studio-2022-17-12-0
+dotnet_diagnostic.IDE0051.severity = none # IDE0051: Remove unused private member
+dotnet_diagnostic.IDE0130.severity = none # IDE0130: Namespace does not match folder structure
diff --git a/.github/workflows/build-release.yaml b/.github/workflows/build-release.yaml
index 0a2ea8e..abfe20a 100644
--- a/.github/workflows/build-release.yaml
+++ b/.github/workflows/build-release.yaml
@@ -12,19 +12,33 @@ on:
         default: false
         type: boolean
 
+concurrency:
+  group: release
+  cancel-in-progress: false
+
 jobs:
+  validate-release:
+    permissions:
+      contents: read
+    uses: Cysharp/Actions/.github/workflows/validate-release.yaml@main
+    with:
+      tag: ${{ inputs.tag }}
+
   update-packagejson:
+    needs: [validate-release]
     permissions:
       actions: read
       contents: write
     uses: Cysharp/Actions/.github/workflows/update-packagejson.yaml@main
     with:
       file-path: ./src/CsprojModifier/Assets/CsprojModifier/package.json
-      tag: ${{ inputs.tag }}
+      tag: ${{ needs.validate-release.outputs.tag }}
       dry-run: ${{ inputs.dry-run }}
+      use-bot-token: true
+    secrets: inherit
 
   build-unity:
-    needs: [update-packagejson]
+    needs: [validate-release, update-packagejson]
     strategy:
       matrix:
         unity: ["6000.0.23f1"]
@@ -57,7 +71,7 @@ jobs:
           UNITY_EMAIL: ${{ steps.op-load-secret.outputs.UNITY_EMAIL }}
           UNITY_PASSWORD: ${{ steps.op-load-secret.outputs.UNITY_PASSWORD }}
           UNITY_SERIAL: ${{ steps.op-load-secret.outputs.UNITY_SERIAL }}
-          UNITY_PACKAGE_VERSION: ${{ inputs.tag }}
+          UNITY_PACKAGE_VERSION: ${{ needs.validate-release.outputs.version }}
         with:
           projectPath: src/CsprojModifier
           unityVersion: ${{ matrix.unity }}
@@ -71,28 +85,27 @@ jobs:
       # Store artifacts.
       - uses: Cysharp/Actions/.github/actions/upload-artifact@main
         with:
-          name: CsprojModifier.${{ inputs.tag }}.unitypackage
-          path: ./src/CsprojModifier/CsprojModifier.${{ inputs.tag }}.unitypackage
+          name: CsprojModifier.${{ needs.validate-release.outputs.tag }}.unitypackage
+          path: ./src/CsprojModifier/CsprojModifier.${{ needs.validate-release.outputs.tag }}.unitypackage
           retention-days: 1
 
   # release
   create-release:
-    needs: [update-packagejson, build-unity]
+    needs: [validate-release, update-packagejson, build-unity]
     permissions:
       contents: write
     uses: Cysharp/Actions/.github/workflows/create-release.yaml@main
     with:
       commit-id: ${{ needs.update-packagejson.outputs.sha }}
       dry-run: ${{ inputs.dry-run }}
-      tag: ${{ inputs.tag }}
-      nuget-push: false
+      tag: ${{ needs.validate-release.outputs.tag }}
       release-upload: true
-      release-asset-path: ./CsprojModifier.${{ inputs.tag }}.unitypackage/CsprojModifier.${{ inputs.tag }}.unitypackage
+      release-asset-path: ./CsprojModifier.${{ needs.validate-release.outputs.tag }}.unitypackage/CsprojModifier.${{ needs.validate-release.outputs.tag }}.unitypackage
     secrets: inherit
 
   cleanup:
-    if: ${{ needs.update-packagejson.outputs.is-branch-created == 'true' }}
-    needs: [update-packagejson, build-unity]
+    if: ${{ always() && needs.update-packagejson.outputs.is-branch-created == 'true' }}
+    needs: [update-packagejson, create-release]
     permissions:
       actions: write
     uses: Cysharp/Actions/.github/workflows/clean-packagejson-branch.yaml@main