refactor: apply repository naming contract

Apply the accepted pre-release package, service, type, directory, and role renames as one repository-wide change.

packages/util/atomic-write/tests/invariant.spec.ts

@@ -1,12 +1,12 @@
 import { describe, expect, it } from 'vitest'
 import { Context } from '@deepseek-ai/cordis'
-import InvariantService from '@deepseek-ai/dsh-invariants'
+import InvariantRegistry from '@deepseek-ai/dsh-invariants'
 import * as AtomicWriteInvariant from '../src/invariant.ts'
 
 describe('atomic-write invariant companion', () => {
   it('registers its explained empty runtime invariant', async () => {
     const ctx = new Context()
-    await ctx.plugin(InvariantService)
+    await ctx.plugin(InvariantRegistry)
     const fiber = await ctx.plugin(AtomicWriteInvariant)
 
     expect(() => {