gh-action workflows zusammenlegen

[gamue]

No description provided.

[Copilot]

Pull Request Overview

This PR consolidates two separate GitHub Actions workflows into a single unified workflow. The changes merge the PR build workflow and deployment workflow into one file that handles both build validation for pull requests and deployment to GitHub Pages for main branch pushes.

• Merged separate PR and deployment workflows into a unified CI/CD pipeline
• Added build output validation step to verify site generation
• Updated workflow to conditionally deploy only on main branch pushes

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/workflows/ci-cd.yml	Unified workflow that now handles both PR builds and main branch deployments with conditional deployment logic
.github/workflows/build-prs-to-main.yml	Removed redundant PR-only workflow as functionality is now in consolidated workflow

Comments suppressed due to low confidence (1)

.github/workflows/ci-cd.yml:11

• The contents: write permission is granted globally but only needed for deployment. Consider moving this permission to a job-level scope on the deployment step or using a separate job for deployment to follow the principle of least privilege. PR builds don't need write permissions.