Typed topic builder for mailglass_admin PubSub broadcasts. Every topic is prefixed mailglass: — Phase 6 LINT-06 PrefixedPubSubTopics (see the forthcoming check in the core mailglass package) enforces the prefix at lint time. The prefixed shape matches Mailglass.PubSub.Topics in the core library; the two modules intentionally share the convention so adopter telemetry handlers can pattern-match on a single namespace.

Topics emitted

• admin_reload/0 — "mailglass:admin:reload" — the LiveReload notify target. MailglassAdmin.PreviewLive subscribes on mount; broadcasts originate from the adopter's :phoenix_live_reload config (CONTEXT D-24). The admin package itself never broadcasts on this topic at v0.1 — it is purely a consumer surface.

At v0.1 admin_reload/0 is the ONE topic the admin package consumes. Every call site that subscribes to or broadcasts on this topic MUST go through this module — literal topic strings in call sites are banned by the Phase 6 lint discipline.

Submodules of MailglassAdmin are auto-classified into the root boundary (use Boundary, deps: [Mailglass], exports: [Router] in lib/mailglass_admin.ex); classify_to: is a Boundary directive reserved for mix tasks and protocol implementations and is not used here.