C1 CRITICAL: implement() looked up procedures/handlers with plain property
indexing, so any Object.prototype member name (constructor, toString, etc.)
resolved truthy and skipped the permission gate entirely. Fixed with
Object.hasOwn checks in packages/rpc/src/server.ts. Defense-in-depth guard
added in packages/dev-server/src/rpc-dispatch.ts constraining URL path
segments to a safe charset before they reach service/procedure lookups.
Added missing direct test coverage for packages/rpc/src/transport.ts,
server.ts and client.ts (previously untested), including a prototype-name
sweep in both server.test.ts and dev-server's rpc-endpoint.test.ts.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
ClintchizandClaude Opus 5
7c4b484d0a