[Swimburger]

Summary

• rename Forge's native model vocabulary from groups to namespaces across Rust, TypeScript, the built-in generator, conformance docs, and OpenAPI metadata
• move the plugin WIT from forge:plugin@0.3.0 to 0.4.0 with namespace-only names; prebuilt plugins must be rebuilt
• keep deprecated Rust and TypeScript aliases where possible, plus input aliases for x-forge-group-name and nested groups in x-forge-commands
• continue treating x-fern-sdk-group-name as Fern vocabulary and normalize it to x-forge-namespace

Generated SDK output remains unchanged. This implements the group → namespace portion of FORGE-3; stability remains separate.

Compatibility

• Rust: deprecated Group, Forge::groups, Method::group, Model::group, Plugin::generate_group, and ts::Module::group forward to namespace APIs
• TypeScript: deprecated Group, Forge.groups, Method.group, Model.group, generateGroup, and module.group forward where the WIT boundary permits it
• OpenAPI: old native keys remain accepted, with canonical namespace keys taking precedence regardless of key order
• WIT: intentionally breaking, with no group aliases

Tests

• rustup run 1.99.0 cargo test --all-features
• pnpm --filter @cloudflare/forge test
• pnpm check
• pnpm typecheck

[pkg-pr-new]

npm i https://pkg.pr.new/cloudflare/forge/@cloudflare/forge@87

commit: 01a2885