feat(orchestrator)!: S0 English everywhere, Sécurité, NATO hashes, ICAO digits

Requirement 001 phase 6, S0:

- Speech: the security class shows as "Sécurité" and is spoken as in
  maritime radio, "say-cure-ee-tay" three times. A hex run of 7 or more
  characters with a letter and a digit (commit, session, message ids) is
  spelled in the NATO alphabet; every other digit is spoken on its own
  in ICAO pronunciation (42305: four two tree zero fife). The spelling
  runs inside clip() before the length cut, so a phrase still fits
  SPEECH_LIMIT; the displayed text keeps its digits and hashes.
- English: every orchestrator label, tooltip, message, error, script
  output, document and test string is English (Regeln -> Firewall,
  Hierarchie -> Hierarchy, Steuerung -> Controls, Ausführen -> Run, ...);
  the page declares lang="en" and formats dates as en-GB. Task filter
  ids are English. German stays only in the skill trigger phrases that
  quote the operator, and as identifiers: the view keys (view=) and the
  leitstand id.
- tests/test_english.py scans every tracked text file for umlauts and
  German words, with an allowlist of the quoted trigger phrases.

BREAKING CHANGE: the Stream search tokens art: and seit: are now kind:
and since:; an old art: or seit: token counts as a plain word.

Evidence: make test 657 OK, ruff and markdownlint clean
(/tmp/s0-make-test-1.log); e2e 17 OK, none skipped (/tmp/s0-e2e-1.log);
MEDUSA 86 files, 24 findings on reworded strings accepted after an
independent skeptic (21 path:line, 0 rejected, no behaviour change in
signing, approving, rules, denying, offices, events), rescan 0 open.

🎯 Fix: 93 %
💥 Break: 4 %
💸 Cost: 100 %
⏱️ Time: –
🛡️ Security: 100 %
🏆 Score: 89
🚦 Gate: ✅ 90/5, cost and time <= 100, security 100 %

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_hub_surface.py

@@ -118,7 +118,7 @@ class TestHubSurface(HubCase):
                 self.assertEqual(status, 400)
 
     def test_the_stream_has_four_categories_and_transcripts_stay_out_by_default(self):
-        self.assertEqual({key: value["label"] for key, value in events.VIEWS.items()}, {"fuer-dich": "Für dich", "funk": "Funk", "arbeit": "Arbeit", "transkripte": "Transkripte"})
+        self.assertEqual({key: value["label"] for key, value in events.VIEWS.items()}, {"fuer-dich": "For you", "funk": "Radio", "arbeit": "Work", "transkripte": "Transcripts"})
         self.assertEqual(events.VIEWS["transkripte"]["kinds"], ["transcript"])
         self.assertNotIn("transcript", events.VIEWS["fuer-dich"]["kinds"] + events.VIEWS["funk"]["kinds"] + events.VIEWS["arbeit"]["kinds"])
         self.assertEqual(sorted(events.VIEWS["fuer-dich"]["kinds"]), sorted(events.VIEWS["funk"]["kinds"] + events.VIEWS["arbeit"]["kinds"]))
@@ -139,13 +139,13 @@ class TestHubSurface(HubCase):
 
         self.assertEqual(texts("deploy"), ["radio:Docs:old deploy", "radio:Docs:fresh deploy", "radio:Ops:deploy done", "review:feat: deploy:feat: deploy"])
         self.assertEqual(texts("agent:Docs"), ["radio:Docs:old deploy", "radio:Docs:fresh deploy"])
-        self.assertEqual(texts("art:funk deploy"), ["radio:Docs:old deploy", "radio:Docs:fresh deploy", "radio:Ops:deploy done"])
-        self.assertEqual(texts("art:review"), ["review:feat: deploy:feat: deploy"])
-        self.assertEqual(texts("seit:1h agent:Docs"), ["radio:Docs:fresh deploy"])
-        self.assertEqual(texts("seit:5m done"), ["radio:Ops:deploy done"])
+        self.assertEqual(texts("kind:radio deploy"), ["radio:Docs:old deploy", "radio:Docs:fresh deploy", "radio:Ops:deploy done"])
+        self.assertEqual(texts("kind:review"), ["review:feat: deploy:feat: deploy"])
+        self.assertEqual(texts("since:1h agent:Docs"), ["radio:Docs:fresh deploy"])
+        self.assertEqual(texts("since:5m done"), ["radio:Ops:deploy done"])
         since = time.strftime("%Y-%m-%dT%H:%M", time.localtime(now - 600))
-        self.assertEqual(texts(f"seit:{since} art:funk"), ["radio:Docs:fresh deploy", "radio:Ops:deploy done"])
-        for q in ("art:bogus", "seit:soon", "seit:5y", "agent:"):
+        self.assertEqual(texts(f"since:{since} kind:Radio"), ["radio:Docs:fresh deploy", "radio:Ops:deploy done"])
+        for q in ("kind:bogus", "since:soon", "since:5y", "agent:"):
             with self.subTest(q=q):
                 self.assertEqual(self.get(f"/api/events?q={quote(q)}")[0], 400)