Add Git repository integration for static site export

[Copilot]

Extends the static site export feature with persistent Git repository publishing. After generating a static site snapshot, the system can automatically commit, push, and optionally create a pull request to a configured GitHub or GitLab repository.

Changes

Database & Persistence

• New git_publish_settings table stores repository URL, branch configuration, credentials, and PR templates
• GitPublishSettingsRepository for CRUD operations
• Settings persist across sessions and apply to all future static site generations

Git Operations

• GitPublishCommand handles complete workflow: clone → extract static site → commit → push → create PR
• Supports GitHub and GitLab APIs for automated PR/MR creation
• Uses Git credential helper to avoid exposing tokens in URLs or logs
• Template substitution in commit messages and PR titles (e.g., ${timestamp})

UI Integration

• Static site modal extended with collapsible Git configuration form
• Toggle to enable/disable publishing per generation
• REST endpoints in StaticSiteEndpoint for loading/saving Git settings

Automation

• MakeStaticSiteJob checks for enabled Git settings after site generation
• If configured, automatically publishes to repository without user intervention

Security

Credentials are passed via Git credential helper rather than URL embedding:

// Before: https://token@github.com/user/repo.git
// After: Git credential store with temporary .git-credentials file
configureCredentialHelper(settings, workDir);

Access token validation only required when creating new settings or explicitly updating the token field.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• www.puppycrawl.com
  • Triggering command: /opt/hostedtoolcache/CodeQL/2.24.1/x64/codeql/tools/linux64/java/bin/java /opt/hostedtoolcache/CodeQL/2.24.1/x64/codeql/tools/linux64/java/bin/java -jar /opt/hostedtoolcache/CodeQL/2.24.1/x64/codeql/xml/tools/xml-extractor.jar --fileList=/home/REDACTED/work/cms-platform/.codeql-scratch/dbs/java/working/files-to-index9087151866149303156.list --sourceArchiveDir=/home/REDACTED/work/cms-platform/.codeql-scratch/dbs/java/src --outputDir=/home/REDACTED/work/cms-platform/.codeql-scratch/dbs/java/trap/java (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

There is a feature to Export the website as a static archive from the Visual Page Editor... add a feature so that the exported website can optionally save settings to the database and access a Git repo to commit the current state of the website via a branch and create a PR. The feature will remember the settings and allow future publishing to the git repo.

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