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_board.py

@@ -124,16 +124,16 @@ class TestHubBoard(HubCase):
         for action, other in (("clear-mayday", "sunrise"), ("evening", "sunset"), ("sunset", "evening"), ("sunrise", "clear-mayday")):
             with self.subTest(action=action):
                 self.assertEqual(self.post_json(f"/api/board/{action}", {}, good)[0], 400)
-                self.assertEqual(self.post_json(f"/api/board/{action}", {"proof": None}, good)[:3:2], (400, b"nicht signiert: no signature\n"))
+                self.assertEqual(self.post_json(f"/api/board/{action}", {"proof": None}, good)[:3:2], (400, b"not signed: no signature\n"))
                 stranger = key(-7, "stranger").proof(self.board_proof(action, signer)["payload"], self.origin)
-                self.assertEqual(self.post_json(f"/api/board/{action}", {"proof": stranger}, good)[:3:2], (400, b"nicht signiert: the signing key is not pinned\n"))
+                self.assertEqual(self.post_json(f"/api/board/{action}", {"proof": stranger}, good)[:3:2], (400, b"not signed: the signing key is not pinned\n"))
                 proof = self.board_proof(action, signer)
-                self.assertEqual(self.post_json(f"/api/board/{other}", {"proof": proof}, good)[:3:2], (400, b"nicht signiert: the signature does not list this item\n"))
+                self.assertEqual(self.post_json(f"/api/board/{other}", {"proof": proof}, good)[:3:2], (400, b"not signed: the signature does not list this item\n"))
         self.assertEqual(self.scripts.calls, [])
         proof = self.board_proof("clear-mayday", signer)
         self.assertEqual(self.post_json("/api/board/clear-mayday", {"proof": proof}, good)[0], 200)
         self.assertEqual(self.scripts.calls, [(skill_scripts.RADIO, ["clear", "--force", "--session", "Operator"])])
-        self.assertEqual(self.post_json("/api/board/clear-mayday", {"proof": proof}, good)[:3:2], (400, b"nicht signiert: this signature was already used for this item\n"))
+        self.assertEqual(self.post_json("/api/board/clear-mayday", {"proof": proof}, good)[:3:2], (400, b"not signed: this signature was already used for this item\n"))
         for payload in ({"action": "order"}, {"action": "broadcast"}, {"action": "reboot"}, {"action": 1}, {}, {"action": "evening", "extra": 1}):
             with self.subTest(payload=payload):
                 self.assertEqual(self.post_json("/api/board/sign", payload, good)[0], 400)
@@ -189,7 +189,7 @@ class TestHubBoard(HubCase):
             {"name": "snooze", "arguments": {"ids": [ask_id], "hours": 500}},
             {"name": "view", "arguments": {"name": "funk", "extra": 1}},
         ]}))
-        status, _, body = self.post_json("/api/nl", {"text": "gib alles Grüne frei"}, self.guard(self.host))
+        status, _, body = self.post_json("/api/nl", {"text": "approve everything green"}, self.guard(self.host))
         self.assertEqual(status, 200, body)
         result = json.loads(body)
         self.assertEqual([action["name"] for action in result["actions"]], ["approve", "choose", "message", "view", "snooze"])