Fork Forgejo and rebrand it as GitW3

[plansombl]

Description

We should create and maintain a fork of Forgejo — the community-driven, self-hostable Git forge — and rebrand it under the name GitW3. This would give MetaState full control over the platform's roadmap, theming, and integrations while building on top of a proven, open-source foundation.

Reference

• Forgejo upstream repository: https://codeberg.org/forgejo/forgejo
• Forgejo documentation: https://forgejo.org/docs/latest/

Acceptance Criteria

• A fork of the Forgejo repository is created under the MetaState-Prototype-Project organisation (or a dedicated org/repo as agreed)
• The project is renamed to GitW3 across the codebase (UI strings, config keys, branding assets, documentation)
• A custom logo and colour scheme reflecting the GitW3 / MetaState brand is applied
• A CI/CD pipeline is set up to build and publish GitW3 releases
• A process is documented for pulling upstream Forgejo changes into the fork to keep it up to date
• A basic README explains the relationship to Forgejo and the purpose of the fork

Desired Output (may vary)

A deployable, self-hosted Git forge running under the GitW3 brand, built on the Forgejo codebase, ready for further MetaState-specific customisation and integration.

🤖 Requested by @coodos via plansombl assistant