feat(orchestrator): hierarchy view from council offices with a separate agent order

The Agents views gain a Hierarchie view: an org chart of the chair and
the line offices read from the council claims. The operator appoints,
hands over and recalls an office there; the page signs each change with
the passkey and a host unit (client/offices.py, offices path unit)
verifies the signature, removes a live holder itself and runs a plain
council.py claim for the successor. council.py loses the --operator
flag, so no agent can override a live holder.

The agent order is now separate from task priority: rasci.py agents
order stores it in agent-order.json beside the register through the
nofollow helpers and never writes a --prio pin. It only breaks ties of
equal task rank, also among the queue grants. The Hierarchie view edits
it as a drag list.

Host units run the installed skill scripts, so orchestrator.sh keeps the
offices unit off while the installed council.py, nofollow.py or rasci.py
differ from the tree. Job files, council files and hub records are read
with O_NOFOLLOW and O_NONBLOCK and size caps; nofollow.rewrite replaces
a claim without creating directories, so a beat never revives a released
office.

🎯 Fix: 92 %
💥 Break: 4 %
💸 Cost: 100 %
⏱️ Time: 79 %
🛡️ Security: 100 %
🏆 Score: 100
🚦 Gate: ✅ 90/5, cost and time <= 100, security 100 %

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

tests/test_hub_nav.py

@@ -9,10 +9,14 @@ from hub_support import NAV
 NAV_PROBE = """
 const N = require(process.argv[1]);
 const hashes = ["", "#stream", "#stream/inbox", "#stream/rules", "#stream/nope", "#agents/chord", "#agents/3d", "#agents", "#agents/nope",
-  "#artifacts/tree", "#artifacts/orbit", "#graph", "#graph/swimlane", "#graph/orbit", "#tree", "#bogus", "#agents%2Fswimlane"];
+  "#artifacts/tree", "#artifacts/orbit", "#graph", "#graph/swimlane", "#graph/orbit", "#tree", "#bogus", "#agents%2Fswimlane",
+  "#agents/hierarchy", "#artifacts/hierarchy", "#graph/hierarchy", "#tree/hierarchy"];
 console.log(JSON.stringify({
   tabs: N.TABS.map(([id, label]) => [id, label, (N.SUBS[id] || []).map(([sub, name]) => [sub, name])]),
   views: N.VIEWS.map(([id, label]) => [id, label]),
+  agents: N.viewsOf("agents").map(([id, label]) => [id, label]),
+  artifacts: N.viewsOf("artifacts").map(([id, label]) => [id, label]),
+  icon: N.ICONS.hierarchy,
   routes: hashes.map((hash) => N.route(hash)),
   hashes: [["stream", null], ["inbox", null], ["rules", null], ["agents", "chord"], ["artifacts", "3d"]].map(([screen, view]) => N.hashOf(screen, view)),
   tabOf: ["stream", "inbox", "rules", "agents", "artifacts"].map((screen) => N.tabOf(screen)),
@@ -30,7 +34,12 @@ class TestNavModule(unittest.TestCase):
         self.assertEqual(self.data["tabs"], [["stream", "Stream", [["inbox", "Inbox"], ["rules", "Regeln"]]], ["agents", "Agents", []], ["artifacts", "Artifacts", []]])
 
     def test_agents_and_artifacts_offer_five_views_in_order(self):
-        self.assertEqual(self.data["views"], [["orbit", "Orbit"], ["chord", "Chord"], ["swimlane", "Swimlane"], ["tree", "Tree"], ["3d", "3D"]])
+        shared = [["orbit", "Orbit"], ["chord", "Chord"], ["swimlane", "Swimlane"], ["tree", "Tree"], ["3d", "3D"]]
+        self.assertEqual((self.data["views"], self.data["artifacts"]), (shared, shared))
+
+    def test_only_agents_add_the_hierarchy_after_3d(self):
+        self.assertEqual(self.data["agents"][-2:], [["3d", "3D"], ["hierarchy", "Hierarchie"]])
+        self.assertEqual(self.data["icon"], "bi-diagram-2")
 
     def test_hashes_route_and_the_old_ones_redirect(self):
         stream = {"screen": "stream", "view": None, "redirect": None}
@@ -52,6 +61,10 @@ class TestNavModule(unittest.TestCase):
             {"screen": "artifacts", "view": "tree", "redirect": "#artifacts/tree"},
             stream,
             {"screen": "agents", "view": "swimlane", "redirect": None},
+            {"screen": "agents", "view": "hierarchy", "redirect": None},
+            {"screen": "artifacts", "view": None, "redirect": None},
+            {"screen": "agents", "view": "hierarchy", "redirect": "#agents/hierarchy"},
+            {"screen": "artifacts", "view": "tree", "redirect": "#artifacts/tree"},
         ])
 
     def test_every_screen_has_its_own_hash_and_tab(self):