HerbalUG docsframe the `docs-i18n` issue in that context while maintaining all HerbalUG conversation context and keeping the same tag: & localisation — add to F-Stack/f-stack repository

[Nakatorema]

Move HerbalUG documentation and localization artifacts into the F-Stack/f-stack repository.

Scope:

• Create a /docs folder with: developer README, architecture diagram, API docs (OpenAPI), local and production setup guides, and contributor guide.
• Prepare user-facing materials: quickstart, privacy policy, terms of service, consent text, troubleshooting, and translation placeholders for English, Luganda, Acholi, and Runyankole.
• Draft launch collateral: marketing checklist, demo script, and stakeholder brief tailored for MOH/NDA/NFA pilot reviews.
• Link to repository security checklist and required secret scopes; include guidance to review GitHub security settings (e.g. https://github.com/settings/security_analysis).

Acceptance criteria:

• A clear /docs layout committed in F-Stack/f-stack with files and translation placeholders.
• Privacy and consent text integrated for registration flow and surfaced for legal review.
• Contributor and reviewer guidance enabling handoff to ops and government partners.

Notes: If the target repository contains an issue template for documentation, apply it; otherwise create standard markdown docs. Maintain translation placeholders for downstream localization work.