docs: reserve seam for complete capabilities

packages/code-runtime/code-runtime/tests/reserved.spec.ts

@@ -7,7 +7,7 @@ import {
 } from '@deepseek-ai/dsh-code-runtime'
 
 /**
- * The seam owns the portable-identifier exclusion sets so every backend
+ * The Service Definition owns the portable-identifier exclusion sets so every backend
  * enforces one contract: a namespace list valid on one backend is valid on
  * all. These assertions pin the shared membership backends import rather than
  * re-declare.

packages/code-runtime/code-runtime/tests/service.spec.ts

@@ -6,7 +6,7 @@ import type { CodeRunRequest, CodeRunResult } from '@deepseek-ai/dsh-code-runtim
 /**
  * Minimal concrete runtime: records requests, "executes" by invoking every
  * binding once in declaration order, and lets tests script the outcome. The
- * seam package ships no implementation, so the contract is exercised through
+ * Service Definition package ships no provider, so the contract is exercised through
  * the smallest subclass that honors it.
  */
 class StubRuntime extends CodeRuntime {