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>

tests/test_night.py

@@ -85,6 +85,38 @@ class TestNight(unittest.TestCase):
         self.assertEqual(self._out("resume", sid="s2"), ["s1\tOne", "s3\tThree"])
         self.assertFalse((self.root / "night.json").exists())
 
+    def test_targets_take_a_part_alone_by_day_and_resume_lifts_only_theirs(self):
+        self.assertEqual(self._out("drain", "--target=s2", "--target=s3"), ["s3\tThree", "s2\tTwo"])
+        self._out("suspend", "--target=s3")
+        self.assertEqual(json.loads((self.root / "night.json").read_text(encoding="utf-8")), {"parts": {"s2": "drain", "s3": "suspend"}})
+        self.assertEqual(self._out("status", sid="s2"), ["mode: day", "you: drain (kvb-agent-drain)"])
+        self.assertEqual(self._out("status", sid="s3"), ["mode: day", "you: suspend (kvb-agent-suspend)"])
+        self.assertEqual(self._out("status"), ["mode: day"])
+        self.assertEqual(self._out("resume", "--target=s2"), ["s2\tTwo"])
+        self.assertEqual(self._out("status", sid="s2"), ["mode: day"])
+        self.assertEqual(self._out("resume", "--alone", sid="s3"), ["resumed: s3"])
+        self.assertFalse((self.root / "night.json").exists())
+
+    def test_a_part_outranks_the_mode_and_a_targeted_resume_joins_the_resumed(self):
+        self._out("drain")
+        self._out("suspend", "--target=s2")
+        state = json.loads((self.root / "night.json").read_text(encoding="utf-8"))
+        self.assertEqual((state["mode"], state["active"], state["parts"]), ("drain", "s1", {"s2": "suspend"}))
+        self.assertEqual(self._out("status", sid="s2")[3], "you: suspend (kvb-agent-suspend)")
+        self.assertEqual(self._out("status", sid="s3")[3], "you: drain (kvb-agent-drain)")
+        self._out("resume", "--target=s2", "--target=s3", "--target=s1")
+        state = json.loads((self.root / "night.json").read_text(encoding="utf-8"))
+        self.assertEqual((state["mode"], state["parts"], state["resumed"]), ("drain", {}, ["s2", "s3"]))
+        self.assertEqual([self._out("status", sid=sid)[3] for sid in ("s1", "s2", "s3")], ["you: active", "you: resumed", "you: resumed"])
+        self._out("suspend", "--target=s3")
+        self._out("resume", sid="s2")
+        self.assertFalse((self.root / "night.json").exists())
+
+    def test_a_target_never_parses_as_an_option(self):
+        self._out("drain", "--target=--alone")
+        self.assertEqual(json.loads((self.root / "night.json").read_text(encoding="utf-8")), {"parts": {"--alone": "drain"}})
+        self.assertEqual(self._run("resume", "--alone", "--target=s2").returncode, 2)
+
     def test_bad_state_means_day(self):
         self.root.mkdir()
         for text in (
@@ -94,6 +126,11 @@ class TestNight(unittest.TestCase):
             json.dumps(["suspend"]),
             json.dumps({"mode": "suspend", "active": "s1", "resumed": "s2"}),
             json.dumps({"mode": "sunset", "active": "s1", "awake": "s2"}),
+            json.dumps({"parts": {}}),
+            json.dumps({"parts": {"s2": "noon"}}),
+            json.dumps({"parts": {"s2": ["drain"]}}),
+            json.dumps({"parts": ["s2"]}),
+            json.dumps({"mode": "drain", "active": "s1", "parts": {"s2": "evening"}}),
         ):
             with self.subTest(text=text):
                 (self.root / "night.json").write_text(text, encoding="utf-8")