feat(orchestrator): S5 Tasks with choices, Gantt, estimates and burn charts

Requirement 001 phase 6, S5:

- Tasks tab: every pending ask, rule request, operator row and choice
  card shows under "waits on Operator"; a choice request goes out on a
  fixed channel button, post and call with an agent multi-select, and a
  click on an option sends a passkey-signed answer the agent checks with
  operator_message. The unsigned /api/decisions/<id>/choose route is
  gone, and a decision, choice answer or choice recipient whose name
  holds "*" is refused, so a signed answer never reaches every agent.
- Gantt view: one bar per task from start to end (running to now), one
  arrow per explicit, branch-base and queue-order edge, hatched forecast
  bars (always, points only, real only) from the median duration or
  points times median hours per point.
- rasci.py set --after/--drop-after stores task dependencies and refuses
  unknown tasks and cycles.
- Estimation toggle (No estimate default, Story points) is stored in the
  hub settings; burndown and burnup per whole register, list filter or
  one agent or line, counting tasks or summing complexity with the
  unestimated tasks as their own line.
- New skill kvb-org-queue-estimate: "Request estimates" (story points
  mode, passkey-signed board action) or the skill sends exactly one
  newsletter listing every unestimated task with its RASCI parties; a
  party name that is no plain name shows as "unnamed party".
- Business value per task or in bulk is stored only with a verified
  passkey assertion over the exact ids and values; WSJF uses it instead
  of the median. The task list sorts by every decision-50 mode both ways.
- e2e: the walk's pending ask lives an hour instead of 60 s, and the
  CDP and BiDi drivers retry removing the browser profile while the
  browser exits (ENOTEMPTY).

Evidence: make test 709 OK, ruff and markdownlint clean
(/tmp/s5-make-test-fix-2.log); e2e 26 OK in Chromium and Firefox
(/tmp/s5-e2e-fix-2.log); MEDUSA 50 files, an independent skeptic
rejected four holes (unsigned choose route, unsigned estimates request,
free-text party names, "*" recipients incl. normalizer bypasses), all
fixed and re-verified, the 8 remaining pattern hits accepted, rescan 0
open.

🎯 Fix: 92 %
💥 Break: 4 %
💸 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/tasking.py

@@ -9,7 +9,7 @@ from .register import REGISTER, read_register, status_of
 from .signed import signing
 from .tasks import editable
 
-CHANGE_LIMIT = 10
+CHANGE_LIMIT = 100
 CHANGE_KEYS = ("kind", "id", "argv")
 
 
@@ -25,7 +25,9 @@ class Tasking:
     def task_changes(self, raw: object) -> list[dict]:
         """Args:
             raw: the page's items, each {"kind": "task", "id", "argv"} with
-                the rasci.py arguments of one priority pin or WSJF estimate.
+                the rasci.py arguments of one priority pin, WSJF estimate or
+                operator business value; a bulk change over a selection is
+                one item per task under one passkey assertion.
 
         Returns:
             The signed items, each for an open register task outside
@@ -60,7 +62,7 @@ class Tasking:
         items = self.task_changes(payload["items"])
         proof = self.covered(payload["proof"], items, time.time())
         for item in items:
-            self.still_signed(proof, item)
+            self.operator_proven(proof, item)
         ids = []
         for item in items:
             fields = {"kind": TASK_JOB, "task": item["id"], "argv": item["argv"], "command": shown_command(item["argv"]), "directory": "", "sha256": "", "status": "queued", "proof": proof}