feat(orchestrator): W2 Kanban board with swimlanes and forecast

Tasks gain a Kanban board: columns Waiting, Running and Done, swimlanes P1 to P4+ and Unpinned by WSJF, after-dependency arrows and the dashed queue line; drag and drop stages status, pin and dependency moves that apply with one passkey. The burn chart gets the trend and a forecast. Committed below the bar on the operator's word 2026-11-12 (no further per-bundle tests, one gate after the merge): the W2 e2e never ran.

🎯 Fix: 80 %
💥 Break: 10 %
💸 Cost: 100 %
⏱️ Time: 100 %
🛡️ Security: 100 %
🏆 Score: 72
🚦 Gate: ⛔ fix 80 % < 90, break 10 % > 5

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

tests/test_hub_state.py

@@ -151,7 +151,7 @@ class TestHubState(HubCase):
             set(state),
             {
                 "now", "since", "until", "first", "alarm_since", "reviews", "asks", "decisions", "messages", "operator",
-                "register", "tasks", "task_edges", "agent_order", "radio", "claims", "grants", "night", "night_parts", "presence", "silence", "graph",
+                "register", "tasks", "task_edges", "queue_line", "agent_order", "radio", "claims", "grants", "night", "night_parts", "presence", "silence", "graph",
                 "inbox", "pending", "rules", "approvers", "jobs", "views", "llm", "people", "settings", "media", "speech",
                 "badges", "kinds",
             },