feat(orchestrator): S5.2 drain, suspend and resume chosen agents

The Day/Night menu lists every claimed agent with a checkbox and an All box; Drain, Suspend and Resume act on the ticked agents only, are disabled when none is ticked, and the agent popup carries the same three buttons for that one agent. Each action is passkey-signed with its agent list, night.py takes --target per session and keeps a per-agent part, and each chosen agent gets a call naming the action and its skill. The night skills say how to read a per-agent night.

🎯 Fix: 90 %
💥 Break: 5 %
💸 Cost: 106 %
⏱️ Time: 100 %
🛡️ Security: 100 %
🏆 Score: 81
🚦 Gate: ⚠️ cost 106 % > 100: operator approved the commit

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

docs/requirements/001-agent-orchestrator.md

@@ -303,6 +303,15 @@ from three views down to any agent, branch or artefact.
     time-agent-depth layout.
 58. **Steady 3D camera**: the 3D view fits the graph once per build; state
     refreshes keep the operator's camera.
+59. **Day/Night per agent** (operator 2026-11-10, decisions 59 and 60): the
+    Day/Night menu lists "All" and one checkbox per claimed agent. All ticked
+    runs the global drain, suspend or resume as before; a subset runs it only
+    for the ticked sessions (`night.py --target`), the passkey signs the
+    board item with those sessions, and the radio call reaches only them.
+    Rejected: a second menu for single agents.
+60. **Agent panel Day/Night**: every agent panel shows the agent's part and,
+    for a claimed agent, Drain, Suspend and Resume for that agent alone, by
+    day too. Rejected: single-agent parts only during a night.
 
 ## Approach
 
@@ -741,6 +750,20 @@ flowchart TD
 - [x] Two state refreshes after a manual camera move leave the 3D camera
       where the operator put it.
 
+### Phase 6: Day/Night per agent (S5.2)
+
+- [ ] `night.py drain|suspend|resume --target=<id>` sets and lifts one
+      session's part by day and during a mode, and `night.py status` prints
+      it as the `you:` line (`tests/test_night.py`).
+- [ ] The Day/Night menu lists "All" and one checkbox per claimed agent; all
+      ticked sends the unchanged board item, a subset signs and runs only for
+      the ticked sessions, and none ticked disables the three buttons.
+- [ ] A proof for one set of agents is refused for another set and for all,
+      and an unclaimed session is refused before anything runs
+      (`tests/test_hub_board.py`).
+- [ ] Every agent panel shows the agent's part and Drain, Suspend and Resume
+      for that agent alone.
+
 ### Tests
 
 - **Unit**
@@ -764,6 +787,9 @@ flowchart TD
         business value signature (forged, replayed, altered), sort orders.
   - [x] S5.1: regression and velocity trend with their forecast dates, point
         tooltips, ETA in both modes, radio settings stored from the gear.
+  - [ ] S5.2: night.py targets by day and during a mode, the signed board
+        item with agents (forged set, unclaimed session), the parts in the
+        state.
 - **Integration**
   - [ ] Two scratch sessions exchange `post` and `call` through the real hook
         entry points (JSON on stdin): the post appears only on the callee's
@@ -792,3 +818,6 @@ flowchart TD
   - [x] S5.1: radio spot (send, gear, cancel mayday), Day/Night tooltips,
         one-row Tasks toolbar, trend and point tooltips, ETA column, Tasks
         3D and a steady 3D camera, each at 1920, 1366 and 390 px.
+  - [ ] S5.2: agent checkboxes in the Day/Night menu and the agent panel's
+        buttons, signed in Chromium and refused unsigned in Firefox, each at
+        1920, 1366 and 390 px.