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>

tests/test_hub_settings.py

@@ -150,6 +150,22 @@ class TestHubSettings(HubCase):
         self.assertEqual(status, 200, body)
         self.assertEqual(json.loads(body)["settings"]["speech"], {"on": False, "classes": ["broadcast", "mayday", "security"], "muted": ["Operator", "name:Docs", "s1"]})
 
+    def test_the_estimation_mode_defaults_to_no_estimate_is_stored_and_survives_a_reload(self):
+        self.assertEqual((settings.SETTINGS["estimation"], self.snapshot()["settings"]["estimation"]), ("none", "none"))
+        good = self.guard(self.host)
+        for wrong in ("Story points", "", None, 1, ["points"]):
+            with self.subTest(wrong=wrong):
+                self.assertEqual(self.post_json("/api/settings", {**settings.SETTINGS, "estimation": wrong}, good)[0], 400)
+        self.assertEqual(self.post_json("/api/settings", {key: value for key, value in settings.SETTINGS.items() if key != "estimation"}, good)[0], 400)
+        status, _, body = self.save({**self.snapshot()["settings"], "estimation": "points"}, self.pin())
+        self.assertEqual((status, json.loads(body)["settings"]["estimation"]), (200, "points"))
+        self.assertEqual(json.loads((self.state / "settings.json").read_text(encoding="utf-8"))["estimation"], "points")
+        self.assertEqual(settings.Settings(self.state / "settings.json").get()["estimation"], "points")
+        self.assertEqual(self.snapshot()["settings"]["estimation"], "points")
+        older = {key: value for key, value in self.settings_payload(STREAMS).items() if key != "estimation"}
+        (self.state / "settings.json").write_text(json.dumps(older), encoding="utf-8")
+        self.assertEqual(settings.Settings(self.state / "settings.json").get()["estimation"], "none")
+
     def test_settings_written_before_the_radio_filter_keep_their_values(self):
         older = {key: value for key, value in self.settings_payload(STREAMS).items() if key != "speech"}
         (self.state / "settings.json").write_text(json.dumps(older), encoding="utf-8")