tell an existing commander how to reach its owner

the voice-memos commander was asked for a notification and reached for its
harness's own push tool — a different channel, which refuses to interrupt a
live terminal. it did that because nothing had told it Officer has a route
of its own. that rule is the harness's; the platform's route has none, and
had already pushed to a phone twice with the owner sitting at the terminal.

so the notify part is its own section now, appendable on its own, and the
backfill lands it on a commander that already has a credential — which is
every commander that predates this, i.e. the ones that need it.

the backfill also stopped being all-or-nothing. it skipped everything after
the credential check, so a commander with an officer.env could never
receive anything added later. each section is now appended independently,
keyed on a marker the section itself contains.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Officer-Session: 656f5c85-e49a-4f1f-b9f3-042a04b4d043

src/servers/api/command-hq/directory.ts

@@ -74,6 +74,21 @@ export function credentialSection(credentialPath: string | null): string[] {
     'A 403 is an answer, not a problem to route around. It means this commander was not given that, and',
     'the owner is the one who decides otherwise. Say so rather than finding another way in.',
     '',
+    ...notifySection(),
+  ];
+}
+
+/**
+ * How a commander tells the owner something, and what it may say.
+ *
+ * Its own function because it lands in two places at different times: inside `credentialSection` for a
+ * new commander, and appended on its own by `scripts/backfill-commander-credentials.ts` to a commander
+ * that already has a credential but predates this. The Voice Memos commander is exactly that case — it
+ * reached for the harness's own push tool, which is a different channel and refuses to interrupt a live
+ * terminal, because nothing had told it Officer has a route of its own.
+ */
+export function notifySection(): string[] {
+  return [
     '### Telling the owner something',
     '',
     'A push to their devices, in your own words.',