fix: route Fifth Domain through numbered channels

tests/fifth-domain-numbered-channel-routing.test.mjs

@@ -0,0 +1,35 @@
+import assert from 'node:assert/strict'
+import fs from 'node:fs'
+import test from 'node:test'
+
+const readJson = (path) => JSON.parse(fs.readFileSync(new URL(`../${path}`, import.meta.url), 'utf8'))
+const readText = (path) => fs.readFileSync(new URL(`../${path}`, import.meta.url), 'utf8')
+
+test('Fifth Domain personal language and reality routes are distinct numbered channels', () => {
+  const tree = readJson('routing/fifth-domain-world-tree.json')
+  const router = readJson('world-router.json')
+  const stageGate = readJson('routing/tcs-work-ownership-stage-gate-map.json').stage_gate
+
+  assert.equal(tree.login_routes.human.path.at(-1), 'HEARTBEAT_CORE_CHANNEL')
+  assert.equal(tree.login_routes.reality_execution.path.at(-1), 'ICE-CH-ZC001')
+  assert.equal(router.fifth_domain_personal_channel_routes.language_reasoning.channel_id, 'ICE-CH-HB001')
+  assert.equal(router.fifth_domain_personal_channel_routes.reality_development_execution.channel_id, 'ICE-CH-ZC001')
+  assert.equal(router.fifth_domain_personal_channel_routes.public_language_persona_system_body.channel_id, 'CH-ZERO-CORE-LPM')
+  assert.equal(stageGate.current_fifth_domain_channel, 'ICE-CH-ZC001')
+  assert.equal(stageGate.personal_heartbeat_runtime_may_execute_reality_engineering, false)
+})
+
+test('current entry pages no longer collapse Fifth Domain into a language-only path', () => {
+  for (const path of [
+    'README.md',
+    'BROADCAST-TOWER.hdlp',
+    'WORLD-ROUTER.hdlp',
+    'zero-point/core-channel/INDEX.hdlp',
+  ]) {
+    const source = readText(path)
+    assert.match(source, /ICE-CH-HB001/)
+    assert.match(source, /ICE-CH-ZC001/)
+    assert.match(source, /CH-ZERO-CORE-LPM/)
+    assert.doesNotMatch(source, /^第五域\s*[=＝]\s*语言层$/m)
+  }
+})