feat(orchestrator): tasks tab with register, inbox and queue

Add a Tasks tab that lists the kvb-org-rasci register next to the inbox
and the heavy-job queue, in list, board and RASCI matrix views, each
task with its roles, WSJF, open work and the merge flow of its worktree.

- Task priority pins and WSJF estimates are signed with the operator's
  passkey and applied by the runner through rasci.py; the hub verifies
  the signature itself before it queues a job or logs the change, the
  runner verifies it again and runs only the checked argv, from /, with
  a pinned PATH and a 30 s process-group limit.
- The runner refuses task changes into a council that is a symlink, not
  owned by its uid or given by a relative path, and while the installed
  council.py, nofollow.py or rasci.py differ from the tree.
- Only tasks the hub can sign whole are editable (task slug and length).
- Page lookups keyed by register text use Object.hasOwn, so a status or
  party named like an Object.prototype member cannot break the views.
- The inbox screen renders through the tasks screen, so its task filter
  shows with "Wartet auf Operator" pressed.

Tests: 604 unit tests OK, e2e 15/15 OK (Chromium and Firefox).

🎯 Fix: 93 %
💥 Break: 5 %
💸 Cost: 100 %
⏱️ Time: –
🛡️ Security: 100 %
🏆 Score: 88
🚦 Gate: ✅ 90/5, cost and time <= 100, security 100 %

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

orchestrator/kvb_orchestrator/approving.py

@@ -21,6 +21,7 @@ from .signed import (
     signing,
     verifier,
 )
+from .tasking import task_request
 
 BATCH_LIMIT = 100
 INBOX_KINDS = ("review", "ask", "decision", "operator", "rule")
@@ -242,6 +243,8 @@ class Approving:
             signed = self.deletable(raw)
         elif office_request(raw):
             signed = self.appointable(raw)
+        elif task_request(raw):
+            signed = self.task_changes(raw)
         else:
             signed = [item["signed"] for item in self.checked(raw) if item["signed"] is not None]
         return self.challenge_for(signed)