Keep the SDK internal with WASM-only config #991

Parent

Spec: 1.0 tree cleanup and release contracts

What to build

Consume the SDK as a workspace package; route config through WASM and RPC through napi. Remove npm packaging, publish jobs, native optional dependencies, and version-pin checks.

Acceptance criteria

• SDK contract tests exercise config through WASM and RPC through napi from the workspace package.
• No npm publish workflow or package scripts remain, and Cloud builds against the workspace SDK.

Blocked by

None — can start immediately