docs(account): fix stale transitional wiring NOTE in index.ts (#10020)

The header comment claimed the account app was "NOT yet wired into the
dev/serve plugin set" — that boot-path switch has already landed.
serve.ts loads it in the ADR-0048 platform-app loop
(['@objectstack/account', 'createAccountAppPlugin']), and the boot
path has been verified against a live `os dev` boot (transcript:
objectstack-ai/objectos#94, comment 5329804967). Rewrite the stale
clause and keep the ACCOUNT_APP import sentence, which is still true.

Comment-only change, no executable line touched.

Fixes #9696


Claude-Session: https://claude.ai/code/session_01PnJHU45vPJj5UQrxe946Bx

Co-authored-by: Claude <noreply@anthropic.com>

Author: os-warren

packages/apps/account/src/index.ts

@@ -14,9 +14,12 @@
  * account app.)
  *
  * NOTE (transitional): `ACCOUNT_APP` is still imported from
- * `@objectstack/platform-objects/apps`, and this package is NOT yet wired into
- * the dev/serve plugin set — that boot-path switch lands separately so it can
- * be verified against a live `os dev` boot.
+ * `@objectstack/platform-objects/apps`. The package IS wired into the
+ * dev/serve plugin set — `packages/cli/src/commands/serve.ts` loads it via
+ * the ADR-0048 platform-app loop (`['@objectstack/account',
+ * 'createAccountAppPlugin']`) — and that boot path has been verified against
+ * a live `os dev` boot (transcript: objectstack-ai/objectos#94, comment
+ * 5329804967).
  */
 
 import { ACCOUNT_APP } from '@objectstack/platform-objects/apps';