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_nav.py

@@ -34,16 +34,16 @@ class TestNavModule(unittest.TestCase):
         cls.data = json.loads(done.stdout)
 
     def test_the_navigation_has_four_entries_and_stream_has_inbox_rules_and_radio(self):
-        stream = ["stream", "Stream", [["inbox", "Inbox"], ["rules", "Regeln"], ["radio", "Radio"]]]
+        stream = ["stream", "Stream", [["inbox", "Inbox"], ["rules", "Firewall"], ["radio", "Radio"]]]
         self.assertEqual(self.data["tabs"], [stream, ["agents", "Agents", []], ["artifacts", "Artifacts", []], ["tasks", "Tasks", []]])
 
     def test_agents_and_artifacts_offer_five_views_in_order_and_tasks_three(self):
         shared = [["orbit", "Orbit"], ["chord", "Chord"], ["swimlane", "Swimlane"], ["tree", "Tree"], ["3d", "3D"]]
         self.assertEqual((self.data["views"], self.data["artifacts"]), (shared, shared))
-        self.assertEqual((self.data["taskViews"], self.data["tasks"]), ([["list", "Liste"], ["board", "Board"], ["rasci", "RASCI"]],) * 2)
+        self.assertEqual((self.data["taskViews"], self.data["tasks"]), ([["list", "List"], ["board", "Board"], ["rasci", "RASCI"]],) * 2)
 
     def test_only_agents_add_the_hierarchy_after_3d(self):
-        self.assertEqual(self.data["agents"][-2:], [["3d", "3D"], ["hierarchy", "Hierarchie"]])
+        self.assertEqual(self.data["agents"][-2:], [["3d", "3D"], ["hierarchy", "Hierarchy"]])
         self.assertEqual(self.data["icon"], "bi-diagram-2")
 
     def test_hashes_route_and_the_old_ones_redirect(self):