docs(plugins): the packages entry names the branded override, not just the hatch (#3900)

The docs-drift check flagged `content/docs/plugins/packages.mdx` as
referencing the changed code. Its plugin-dev line described the guard's
refusal and the escape hatch's existence, which is still true, but read as
"the hatch turns the guard off" — the half this change replaced. It now says
the override brands itself.

`@objectstack/types`'s entry needed nothing: `resolveAllowDevPlugin` falls
under the "degraded-boot helpers" it already lists. `releases/v17.mdx`'s only
plugin-dev mention is the retired `DevPluginConfigSchema` cluster, unrelated.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TjTEKP96798WKamk2VCkAp

Author: claude

content/docs/plugins/packages.mdx

@@ -347,7 +347,7 @@ All services implement contracts from `@objectstack/spec/contracts` and are kern
 
 **Development Assembly Plugin** — one plugin that wires the real platform stack for zero-config local development.
 
-- **Features**: Auto-assembles ObjectQL + in-memory driver + auth + security + Hono server + REST + dispatcher + app metadata, plus optional real services when installed (storage, realtime, i18n); registers no stubs — a slot no plugin fills stays empty, as in production (ADR-0115); refuses to boot with `NODE_ENV=production` (`OS_ALLOW_DEV_PLUGIN` escape hatch)
+- **Features**: Auto-assembles ObjectQL + in-memory driver + auth + security + Hono server + REST + dispatcher + app metadata, plus optional real services when installed (storage, realtime, i18n); registers no stubs — a slot no plugin fills stays empty, as in production (ADR-0115); refuses to boot with `NODE_ENV=production` (`OS_ALLOW_DEV_PLUGIN` escape hatch, which brands the override in the boot log and on the ready banner instead of overriding silently)
 - **When to use**: Zero-config local development and playgrounds
 - **README**: [View README](https://github.com/objectstack-ai/objectstack/blob/main/packages/plugins/plugin-dev/README.md)