Convert CI auto-sort system to Gitea Actions

- Move workflow from ci/auto-sort-files.yml to .gitea/workflows/auto-sort-files.yml
- Update workflow to use CI_BOT_TOKEN secret for Gitea authentication
- Configure proper git push URL for Gitea repository
- Update ci/README.md with comprehensive Gitea Actions setup instructions
- Add GITEA-ACTIONS-SETUP.md with detailed configuration guide
- Update README.md to reference Gitea Actions setup documentation
- Remove old GitHub Actions workflow file
- Provide step-by-step token creation and repository secret configuration
- Include troubleshooting guide and security considerations

ci/README.md

@@ -67,18 +67,46 @@ The workflow can be customized by editing `auto-sort-files.yml`:
 
 ## Setup Instructions
 
-### GitHub Actions
-1. The workflow file is already configured in `.github/workflows/` (copy from `ci/auto-sort-files.yml`)
-2. Ensure repository has appropriate permissions for the action to commit
-3. The workflow will run automatically on pushes and pull requests
+### Gitea Actions (Recommended)
+This template is optimized for Gitea Actions. The workflow is already configured in `.gitea/workflows/auto-sort-files.yml`.
 
-### GitLab CI
+#### Required Setup:
+1. **Enable Gitea Actions** on your Gitea instance
+2. **Create CI Bot Token**:
+   - Go to your Gitea user settings → Applications → Generate New Token
+   - Name: `CI Auto-Sort Bot`
+   - Scopes: `repo` (full repository access)
+   - Copy the generated token
+3. **Add Repository Secret**:
+   - Go to your repository → Settings → Secrets
+   - Add new secret: `CI_BOT_TOKEN`
+   - Value: Paste the token from step 2
+4. **Enable Actions**: Go to repository Settings → Actions → Enable Actions
+
+#### Token Configuration:
+The workflow uses `${{ secrets.CI_BOT_TOKEN }}` to authenticate git operations. This token must have:
+- **Repository access**: Read and write permissions
+- **Contents permission**: To commit and push changes
+- **Actions permission**: To run workflows
+
+#### Verification:
+- Push a test file with DS_ or IMG_ prefix to verify the workflow runs
+- Check the Actions tab in your repository for workflow execution logs
+- Verify that files are automatically moved to correct directories
+
+### GitHub Actions (Alternative)
+If using GitHub instead of Gitea:
+1. Copy `.gitea/workflows/auto-sort-files.yml` to `.github/workflows/`
+2. Replace `CI_BOT_TOKEN` with `GITHUB_TOKEN` in the workflow
+3. Update the push URL to use GitHub's format
+
+### GitLab CI (Alternative)
 To adapt for GitLab CI, create `.gitlab-ci.yml`:
 ```yaml
 auto-sort:
   stage: organize
   script:
-    - # Copy the bash script from auto-sort-files.yml
+    - # Copy the bash script from .gitea/workflows/auto-sort-files.yml
   only:
     - main
     - develop