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_settings.py

@@ -35,27 +35,27 @@ class TestHubSettings(HubCase):
     def test_a_new_stream_url_needs_the_passkey(self):
         good = self.guard(self.host)
         payload = self.settings_payload(STREAMS)
-        self.assertEqual(self.post_json("/api/settings", payload, good)[:3:2], (400, b"nicht signiert: no signature\n"))
+        self.assertEqual(self.post_json("/api/settings", payload, good)[:3:2], (400, b"not signed: no signature\n"))
         self.assertFalse((self.state / "settings.json").exists())
         signer = self.pin()
         request = self.prepared(payload)["payload"]
         stranger = key(-7, "stranger").proof(request, self.origin)
-        self.assertEqual(self.post_json("/api/settings", {**payload, "proof": stranger}, good)[:3:2], (400, b"nicht signiert: the signing key is not pinned\n"))
+        self.assertEqual(self.post_json("/api/settings", {**payload, "proof": stranger}, good)[:3:2], (400, b"not signed: the signing key is not pinned\n"))
         self.assertEqual(self.media_src(), "media-src 'self'")
         proof = signer.proof(request, self.origin)
         status, _, body = self.post_json("/api/settings", {**payload, "proof": proof}, good)
         self.assertEqual(status, 200, body)
         self.assertEqual(self.media_src(), "media-src 'self' http://10.0.0.5:8000 https://other.example:8443 https://radio.example")
-        moved = self.settings_payload([{**STREAMS[0], "url": "https://radio.example/abend"}, STREAMS[1]])
-        self.assertEqual(self.post_json("/api/settings", moved, good)[:3:2], (400, b"nicht signiert: no signature\n"))
+        moved = self.settings_payload([{**STREAMS[0], "url": "https://radio.example/evening"}, STREAMS[1]])
+        self.assertEqual(self.post_json("/api/settings", moved, good)[:3:2], (400, b"not signed: no signature\n"))
         status, _, body = self.save(moved, signer)
         self.assertEqual(status, 200, body)
         self.assertEqual(self.media_src(), "media-src 'self' http://10.0.0.5:8000 https://radio.example")
         self.assertEqual(self.post_json("/api/settings", self.settings_payload([]), good)[0], 200)
-        self.assertEqual(self.post_json("/api/settings", {**payload, "proof": proof}, good)[:3:2], (400, b"nicht signiert: this signature was already used for this item\n"))
+        self.assertEqual(self.post_json("/api/settings", {**payload, "proof": proof}, good)[:3:2], (400, b"not signed: this signature was already used for this item\n"))
         self.assertEqual(self.save(moved, signer)[0], 200)
         evil = self.settings_payload([*moved["streams"], {**STREAMS[0], "url": "https://evil.example/listen"}])
-        self.assertEqual(self.post_json("/api/settings", {**evil, "proof": signer.proof(self.prepared(payload)["payload"], self.origin)}, good)[:3:2], (400, b"nicht signiert: the signature does not list this item\n"))
+        self.assertEqual(self.post_json("/api/settings", {**evil, "proof": signer.proof(self.prepared(payload)["payload"], self.origin)}, good)[:3:2], (400, b"not signed: the signature does not list this item\n"))
         self.assertEqual(self.post_json("/api/settings", evil, good)[0], 400)
         self.assertEqual(self.media_src(), "media-src 'self' http://10.0.0.5:8000 https://radio.example")
         status, _, body = self.save(evil, signer)
@@ -163,7 +163,7 @@ class TestHubSettings(HubCase):
 
     def test_csp_media_src_lists_exactly_the_stream_origins(self):
         self.assertEqual(self.media_src(), "media-src 'self'")
-        streams = [*STREAMS, {**STREAMS[0], "name": "Gleich", "url": "https://Radio.Example:443/zweiter?x=1"}]
+        streams = [*STREAMS, {**STREAMS[0], "name": "Same", "url": "https://Radio.Example:443/second?x=1"}]
         status, _, body = self.save(self.settings_payload(streams), self.pin())
         self.assertEqual(status, 200, body)
         origins = ["http://10.0.0.5:8000", "https://other.example:8443", "https://radio.example"]