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_nav.py

@@ -11,7 +11,7 @@ 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",
   "#agents/hierarchy", "#artifacts/hierarchy", "#graph/hierarchy", "#tree/hierarchy", "#stream/radio", "#radio",
-  "#tasks", "#tasks/board", "#tasks/rasci", "#tasks/orbit", "#agents/board", "#tasks/hierarchy"];
+  "#tasks", "#tasks/board", "#tasks/rasci", "#tasks/orbit", "#agents/board", "#tasks/hierarchy", "#tasks/gantt", "#tasks/burn", "#agents/gantt"];
 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]),
@@ -37,10 +37,11 @@ class TestNavModule(unittest.TestCase):
         stream = ["stream", "Stream", [["inbox", "Inbox"], ["rules", "Firewall"], ["radio", "Radio"]]]
         self.assertEqual(self.data["tabs"], [stream, ["agents", "Agents", []], ["artifacts", "Artifacts", []], ["tasks", "Tasks", []]])
 
-    def test_agents_and_artifacts_offer_five_views_in_order_and_tasks_three(self):
+    def test_agents_and_artifacts_offer_five_views_in_order_and_tasks_five(self):
         shared = [["orbit", "Orbit"], ["chord", "Chord"], ["swimlane", "Swimlane"], ["tree", "Tree"], ["3d", "3D"]]
         self.assertEqual((self.data["views"], self.data["artifacts"]), (shared, shared))
-        self.assertEqual((self.data["taskViews"], self.data["tasks"]), ([["list", "List"], ["board", "Board"], ["rasci", "RASCI"]],) * 2)
+        task_views = [["list", "List"], ["board", "Board"], ["rasci", "RASCI"], ["gantt", "Gantt"], ["burn", "Burndown and burnup"]]
+        self.assertEqual((self.data["taskViews"], self.data["tasks"]), (task_views,) * 2)
 
     def test_only_agents_add_the_hierarchy_after_3d(self):
         self.assertEqual(self.data["agents"][-2:], [["3d", "3D"], ["hierarchy", "Hierarchy"]])
@@ -78,6 +79,9 @@ class TestNavModule(unittest.TestCase):
             {"screen": "tasks", "view": None, "redirect": None},
             {"screen": "agents", "view": None, "redirect": None},
             {"screen": "tasks", "view": None, "redirect": None},
+            {"screen": "tasks", "view": "gantt", "redirect": None},
+            {"screen": "tasks", "view": "burn", "redirect": None},
+            {"screen": "agents", "view": None, "redirect": None},
         ])
 
     def test_every_screen_has_its_own_hash_and_tab(self):