Pre-1.0 Forward Only

Use this skill to keep pre-1.0 Rust workspaces focused on the current API and current repository shape. It pairs two rules:

1. Durable docs should route to the surfaces that exist instead of cataloging absent surfaces.
2. Pre-1.0 Rust crates and workspaces need not preserve obsolete APIs with compatibility bridges unless explicit project policy or the user requires them; release-versioning requirements still apply.

Scope Check

Before applying the rules: