chore(changeset): plugin-email patch for the boot-order template send

Claude-Session: https://claude.ai/code/session_018VqJPGA1NDNSCZsnecsChP
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

.changeset/23946-email-template-loader-boot-order.md

@@ -0,0 +1,9 @@
+---
+"@objectstack/plugin-email": patch
+---
+
+Clause-②: no
+
+fix(plugin-email): a template send issued before `EmailServicePlugin`'s own `kernel:ready` renders, persists its `sys_email` row and delivers, instead of throwing `TEMPLATE_NOT_FOUND: no templateLoader configured on EmailService`
+
+`EmailServicePlugin` now wires `sys_email` persistence and the registry template loader in `init`, before it registers the `email` service. Before this, both were wired in the plugin's own `kernel:ready` hook, and a plugin that starts earlier runs its `kernel:ready` hooks first. The dev admin seed (`objectstack dev --seed-admin`, the default) signs its account up from one of those hooks, so on a boot with email verification required the seed's verification mail failed. Each such boot logged `ERROR [Better Auth]: Failed to run background task: Error: TEMPLATE_NOT_FOUND …` and left no `sys_email` row. That send now goes through the transport and default sender the boot was configured with. The `mail` settings namespace is still applied at `kernel:ready`. Sends made after boot behave as before.