Revert "ci: use GitHub App token to enable automatic workflow triggering"

This reverts commit e62fba9cc1.

.github/GH_APP_TOKEN.md

@@ -1,36 +0,0 @@
-# GitHub App Token Setup
-
-The `prepare-release.yaml` workflow requires a GitHub App token stored as a repository secret named `GH_APP_TOKEN`.
-
-## Why GitHub App Token?
-
-GitHub's default `GITHUB_TOKEN` has a security limitation: actions performed with it (like pushing commits or tags) **do not trigger other workflows**. This prevents infinite workflow loops but also means our `prepare-release` workflow cannot automatically trigger the `release` workflow when it pushes a tag.
-
-Using a GitHub App token bypasses this limitation because the app is a separate identity from GitHub Actions.
-
-## Setup
-
-1. **GitHub App**: Ensure your GitHub App is installed on this repository with the following permissions:
-   - Repository permissions:
-     - Contents: Read and write
-     - Metadata: Read-only
-
-2. **Generate Token**: Your GitHub App should generate installation access tokens
-
-3. **Add Secret**: Store the token as a repository secret:
-   - Go to: Settings → Secrets and variables → Actions
-   - Name: `GH_APP_TOKEN`
-   - Value: Your GitHub App installation token
-
-## Alternative: Personal Access Token (PAT)
-
-If you don't have a GitHub App, you can use a classic PAT with `repo` scope:
-- Create PAT at: Settings → Developer settings → Personal access tokens → Tokens (classic)
-- Scope required: `repo`
-- Store as `GH_APP_TOKEN` secret
-
-**Note**: PATs are tied to your user account; GitHub Apps are preferred for organizational use.
-
-## Validation
-
-After setup, the `prepare-release` workflow will automatically trigger the `release` workflow when it pushes a tag. You should see both workflows run in sequence without manual intervention.

.github/workflows/prepare-release.yaml

@@ -1,8 +1,5 @@
 name: Prepare Release
 
-# Uses GitHub App token (GH_APP_TOKEN) to trigger the release workflow
-# GITHUB_TOKEN cannot trigger other workflows due to GitHub security policy
-
 on:
   workflow_dispatch:
     inputs:
@@ -27,7 +24,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
-          token: ${{ secrets.GH_APP_TOKEN }}
+          token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Configure git
         run: |