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>

orchestrator/kvb_orchestrator/graph.py

@@ -2,13 +2,23 @@ from __future__ import annotations
 
 from collections import Counter
 
-from .council import HUMAN, agent, ordered, subagent
+from .council import CHAIR_OFFICE, HUMAN, agent, ordered, subagent
 from .names import Directory
 from .orbits import affinity
 from .records import shown
 from .register import ENDED, parties, status_of
 
-CHAIR = "Maintainer"
+
+def chair_of(claims: list[dict], directory: Directory, end: float) -> str:
+    """Returns:
+        The node key of the chair office's holder, empty while it is vacant.
+    """
+    claim = next((claim for claim in claims if claim["office"] == CHAIR_OFFICE), None)
+    if claim is None:
+        return ""
+    if claim["session"] != "-":
+        return claim["session"]
+    return directory.key(claim["agent"], end)
 
 
 def parent_of(roles: dict[str, str], known: set[str], fallback: str) -> str:
@@ -36,13 +46,14 @@ def edges(radio: list[dict], grant_rows: list[dict], chair: str) -> list[dict]:
 
 def graph(radio: list[dict], grant_rows: list[dict], tasks: dict[str, dict], claims: list[dict], end: float, directory: Directory) -> dict:
     current = {task: row for task, row in sorted(tasks.items()) if status_of(row) not in ENDED}
-    chair = directory.key(CHAIR, end)
+    chair = chair_of(claims, directory, end)
+    top = chair or HUMAN
     workers = {task: agent(row.get("worker")) for task, row in current.items()}
     keys = {row["source"] for row in radio} | {key for row in radio for key in row["targets"]}
     keys |= {claim["session"] for claim in claims if claim["agent"] and claim["session"] != "-"}
     keys |= {directory.key(name, end) for name in workers.values() if not subagent(name)}
     found = sorted(keys - {"", HUMAN, chair}, key=lambda key: (directory.label(key, end).lower(), key))
-    known = {chair, *found}
+    known = {chair, *found} - {""}
     moons: dict[str, tuple[str, str]] = {}
     holders: dict[str, dict[str, dict]] = {}
     for task, row in current.items():
@@ -53,14 +64,15 @@ def graph(radio: list[dict], grant_rows: list[dict], tasks: dict[str, dict], cla
         worker = workers[task]
         holder = directory.key(worker, end)
         if subagent(worker):
-            parent = parent_of(roles, known, chair)
+            parent = parent_of(roles, known, top)
             holder = f"{worker} @ {parent}"
             moons[holder] = (parent, worker)
         if holder:
             duties(holder, task, row, holders)["worker"] = True
         for key, letters in roles.items():
             duties(key, task, row, holders)["letters"] += letters
-    plan = [(HUMAN, "operator", None, HUMAN), (chair, "chair", None, directory.label(chair, end))]
+    plan = [(HUMAN, "operator", None, HUMAN)]
+    plan += [(chair, "chair", None, directory.label(chair, end))] if chair else []
     plan += [(key, "session", None, directory.label(key, end)) for key in found]
     plan += [(moon, "subagent", *moons[moon]) for moon in ordered(set(moons))]
     nodes = [
@@ -77,4 +89,4 @@ def graph(radio: list[dict], grant_rows: list[dict], tasks: dict[str, dict], cla
         for key, node_kind, parent, label in plan
     ]
     layout = affinity(nodes, radio, tasks, claims, end, lambda name: directory.key(name, end))
-    return {"nodes": nodes, "edges": edges(radio, grant_rows, chair), "layout": layout}
+    return {"nodes": nodes, "edges": edges(radio, grant_rows, top), "layout": layout}