Update boost README with plugin roadmap and development setup

[durandom]

The boost workspace README is a scaffolded placeholder. Update it to include:

• A short description of what boost is (rewrite of augment — AI assistant plugin for Backstage)
• The planned plugin structure (boost, boost-backend, boost-common)
• Prerequisites section (Node 22+, yarn)

[fullsend-ai-triage]

Triage Summary

Severity: Low | Category: Documentation

Problem

The boost workspace README (workspaces/boost/README.md) is a scaffolded placeholder. It currently contains a minimal template with a "coming soon" plugin table and generic dev commands, but lacks meaningful context about the project.

Current State

The existing README confirms boost is a rewrite of the augment plugin and links to the augment workspace, but provides no detail on plugin architecture or prerequisites.

Recommended Changes

Update workspaces/boost/README.md with the three sections specified in the issue:

1. Project description — what boost is and its relationship to augment
2. Plugin structure — planned packages: boost, boost-backend, boost-common
3. Prerequisites — Node 22+, yarn

Proposed Test

Verify the updated README contains:
- A description mentioning boost as a rewrite of augment (AI assistant plugin for Backstage)
- A plugin structure section listing boost, boost-backend, and boost-common
- A prerequisites section specifying Node 22+ and yarn

This is a good first issue — the scope is well-defined and limited to a single file.

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Labels: Documentation enhancement for the boost workspace, suitable for newcomers given the narrow scope.

[durandom]

/fs-coder

[durandom]

/fs-code