feat(skills)!: S4 night commands become drain, suspend and resume

Requirement 001 phase 6, S4 (decision 29):

- Skills renamed: kvb-org-evening -> kvb-org-drain, kvb-org-sunset ->
  kvb-org-suspend, kvb-org-sunrise -> kvb-org-resume, kvb-agent-relax
  -> kvb-agent-drain, kvb-agent-sleep -> kvb-agent-suspend,
  kvb-agent-wakeup -> kvb-agent-resume; their text uses the new verbs and
  every reference in skills, README, orchestrator and tests follows.
- night.py takes drain, suspend, resume, resume --alone and status. A
  state file written before the rename keeps working: mode evening reads
  as drain, sunset as suspend, the awake list as resumed and is rewritten
  on the next save; the hub's council.night_mode maps the same values.
  mode: day and handover_night_<session>.md keep their names.
- Orchestrator: the Day/Night menu shows Drain, Suspend and Resume, each
  confirmed, signed through /api/board/sign with the passkey and run as
  the existing argv job; the old action names are refused.
- kvb-skill-cleanup: git rates two renames at 44 and 50 % similarity,
  under its default threshold, so legacy.py detects renames from 40 %.
- tests/test_night_names.py fails on any old name in the tree outside a
  rename record "old ->".

BREAKING CHANGE: the six old skill names and night.py's clear and wake
are gone. Run make install (it reinstalls the orchestrator too), then
kvb-skill-cleanup to remove the old installed copies; until the install,
the running hub calls the old night.py path.

Evidence: make test 679 OK, ruff and markdownlint clean
(/tmp/s4-make-test-1.log); e2e 22 OK in Chromium and Firefox
(/tmp/s4-e2e-3.log); MEDUSA 23 files, the 2 findings are the
byte-identical atomic state write that moved with night.py, already
accepted after a skeptic at its old path, rescan 0 open.

🎯 Fix: 93 %
💥 Break: 4 %
💸 Cost: 100 %
⏱️ Time: –
🛡️ Security: 100 %
🏆 Score: 89
🚦 Gate: ✅ 90/5, cost and time <= 100, security 100 %

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

README.md

@@ -9,7 +9,7 @@ Compatible with Claude Code, Codex, Gemini CLI, Cursor, Copilot, Windsurf, Cline
 
 ## Naming 🏷️
 
-Every first-party skill is named `kvb-<category>-<name>` with one of these categories: `think`, `create`, `code`, `ci`, `git`, `check`, `org`, `agent`, `skill`, `coach`: `think` thinks without producing a file, `create` produces an artifact, `code` works on code, `ci` on pipelines, `git` on history and forges, `check` analyses and reports findings, `org` coordinates agents, `agent` acts on one agent itself: its repository setup (code index, agent instructions) and its state (relax, sleep, wake up), `skill` works on skills themselves, `coach` serves the operator's wellbeing. Only `kvb-cleanup`, `kvb-coach`, `kvb-help` and the collectors `kvb-dream`, `kvb-optimize` and `kvb-transcend` stand without a category. Names use `a-z`, `0-9` and single hyphens, at most 64 characters, and equal their directory name. `tests/test_naming.py` enforces all of it, including that the organigram below lists every skill under its category.
+Every first-party skill is named `kvb-<category>-<name>` with one of these categories: `think`, `create`, `code`, `ci`, `git`, `check`, `org`, `agent`, `skill`, `coach`: `think` thinks without producing a file, `create` produces an artifact, `code` works on code, `ci` on pipelines, `git` on history and forges, `check` analyses and reports findings, `org` coordinates agents, `agent` acts on one agent itself: its repository setup (code index, agent instructions) and its state (drain, suspend, resume), `skill` works on skills themselves, `coach` serves the operator's wellbeing. Only `kvb-cleanup`, `kvb-coach`, `kvb-help` and the collectors `kvb-dream`, `kvb-optimize` and `kvb-transcend` stand without a category. Names use `a-z`, `0-9` and single hyphens, at most 64 characters, and equal their directory name. `tests/test_naming.py` enforces all of it, including that the organigram below lists every skill under its category.
 
 ## Organigram 🏛️
 
@@ -81,17 +81,17 @@ flowchart LR
   org --> org_robot[kvb-org-robot]
   org --> org_operator[kvb-org-operator]
   org --> org_priority[kvb-org-priority]
-  org --> org_evening[kvb-org-evening]
-  org --> org_sunset[kvb-org-sunset]
-  org --> org_sunrise[kvb-org-sunrise]
+  org --> org_drain[kvb-org-drain]
+  org --> org_suspend[kvb-org-suspend]
+  org --> org_resume[kvb-org-resume]
   think --> think_choice[kvb-think-choice]
   org --> org_radio[kvb-org-radio]
   org --> org_queue[kvb-org-queue]
   org --> org_update[kvb-org-update]
   agent --> agent_optimize[kvb-agent-optimize]
-  agent --> agent_relax[kvb-agent-relax]
-  agent --> agent_sleep[kvb-agent-sleep]
-  agent --> agent_wakeup[kvb-agent-wakeup]
+  agent --> agent_drain[kvb-agent-drain]
+  agent --> agent_suspend[kvb-agent-suspend]
+  agent --> agent_resume[kvb-agent-resume]
   skill --> skill_tune[kvb-skill-tune]
   skill --> skill_auto[kvb-skill-auto]
   skill --> skill_essence[kvb-skill-essence]
@@ -189,18 +189,18 @@ flowchart LR
     robot[kvb-org-robot]
     operator[kvb-org-operator]
     priority[kvb-org-priority]
-    evening[kvb-org-evening]
-    sunset[kvb-org-sunset]
-    sunrise[kvb-org-sunrise]
+    org_drain[kvb-org-drain]
+    org_suspend[kvb-org-suspend]
+    org_resume[kvb-org-resume]
     radio[kvb-org-radio]
     queue[kvb-org-queue]
     org_update[kvb-org-update]
   end
   subgraph cat_agent [agent]
     agent_optimize[kvb-agent-optimize]
-    relax[kvb-agent-relax]
-    sleep[kvb-agent-sleep]
-    wakeup[kvb-agent-wakeup]
+    agent_drain[kvb-agent-drain]
+    agent_suspend[kvb-agent-suspend]
+    agent_resume[kvb-agent-resume]
   end
   subgraph cat_skill [skill]
     autotune[kvb-skill-tune]
@@ -345,13 +345,13 @@ flowchart LR
   optimize --> gaps
   agent_optimize -. install .-> operator
   agent_optimize -. domain graphs .-> rasci
-  evening -. message .-> relax
-  sunset -. message .-> sleep
-  sunrise -. message .-> wakeup
-  relax --> sleep
-  sunset -. hold and accept .-> operator
-  sunrise -. hold and accept .-> operator
-  sleep -. stops .-> robot
+  org_drain -. message .-> agent_drain
+  org_suspend -. message .-> agent_suspend
+  org_resume -. message .-> agent_resume
+  agent_drain --> agent_suspend
+  org_suspend -. hold and accept .-> operator
+  org_resume -. hold and accept .-> operator
+  agent_suspend -. stops .-> robot
   coach --> active_listening
   coach --> operator
   coach --> rasci