[Roadmap] Documentation hub for HugeGraph Rust modernization

Goal

Provide the documentation and contributor entry point for HugeGraph's incremental Rust modernization across Toolchain, Server/HStore/PD, and graph computing.

This issue tracks documentation work; it does not imply rewriting the documentation website itself in Rust. The project is an incremental experiment, not a commitment to replace every existing implementation.

Roadmap at a glance

Toolchain ─────┐
Server/PD ─────┼─> Documentation hub
Computer ──────┘      │
                      ├─ architecture and status
RFC -> PoC -> tests ──┼─ compatibility and migration
    -> preview        ├─ benchmarks and tutorials
    -> adoption       └─ contributor guide

Documentation is updated at every delivery gate, not after the rewrite.

Documentation scope

1. Architecture and status
   • A project-wide roadmap and per-repository status.
   • Clear ownership, maturity (experiment, preview, production-ready), non-goals, and known limitations.
2. Contributor guide
   • Rust toolchain setup, workspace conventions, style/lint/test commands, dependency policy, and how to propose a child project.
3. Compatibility and migration
   • API/CLI, protocol, storage/data-format, and platform matrices.
   • Coexistence, upgrade, downgrade, and rollback instructions.
4. Evidence
   • Reproducible benchmark methodology and results.
   • Tutorials and troubleshooting for opt-in Rust components.

Documentation should describe only implemented or explicitly proposed behavior; it must distinguish plans from released features.

Candidate work items

• Add an overview page linking all repository parent issues
• Define shared terminology and maturity labels
• Add the Rust contributor environment/style guide
• Create compatibility and supported-platform templates
• Create a reproducible benchmark-report template
• Document the first accepted proof of concept
• Add migration, rollback, and troubleshooting guides before any preview release
• Keep English and Chinese navigation/content aligned

This checklist will link to concrete child issues as proposals are accepted.

Project-wide roadmap

• Toolchain: apache/hugegraph-toolchain#748
• Server / HStore / PD: apache/hugegraph#3110
• Computer / Vermeer: apache/hugegraph-computer#355
• Documentation hub (this issue): apache/hugegraph-doc#462

How to participate

Interested in open source, Rust, technical writing, internationalization, developer experience, or infrastructure? Comment with the area you want to help with. Documentation, diagrams, tutorials, benchmark reproduction, and translation are excellent entry points.

First-time contributors can start with the HugeGraph contribution guide and the repository's good first issue / help wanted tasks.