docs(readme,env): the leisure tick and its switches

.env.example

@@ -111,6 +111,14 @@ VIBEGRAM_REPO=
 # Токен GitHub с доступом к репе (приватная); пусто - публичная
 VIBEGRAM_REPO_TOKEN=
 
+### Досуг (ежечасный тик мастера, с S13) ######################################
+
+# Час активного окна (12:00-03:59) и четыре часа тихого (04:00-11:59) будят
+# мастера инжектом без задания. Повседневный выключатель - строка `досуг: выкл`
+# в `мета/бобер/досуг.md`; здесь - рубильник: `off` снимает джоб совсем.
+# Пусто = включено.
+LEISURE=
+
 ### Порты хоста и внешний адрес ###############################################
 
 PORT_GATEWAY=62990

README.md

@@ -163,6 +163,47 @@ pieces live in `beaver_agent/`, one concern per module:
   and seeds, the vault watcher, the curator briefing
 - `jobs/` - crons and webhooks, one file per job
 
+## Leisure: the hourly tick (`beaver_agent/jobs/leisure.py`)
+
+The master gets an inject with no task in it every hour: what time it is,
+what kind of hour this is, and what is left of the day's plan. The active
+window (12:00-03:59) ticks every hour; the quiet one (04:00-11:59, the hours
+the owner has never once written in) ticks only in the four hours the plan
+names - twenty ticks a day.
+
+The day runs noon to noon and the first tick of it is the planning one: the
+model lays the remaining hours out into *mine* (leisure only, the owner's
+business stays out) and *mixed*, and writes them to `мета/бобер/досуг.md`:
+
+```markdown
+досуг: вкл
+сутки: 2026-09-08
+тихие часы: 04, 06, 08, 10
+мои часы: 13, 15, 18, 21, 00, 02, 06
+```
+
+**The model writes that file, the job only reads it**, so they cannot
+overwrite each other; how many leisure slots are spent follows from the plan
+and the clock, so there is no state to keep. No plan for the day (a restart,
+a fresh day, a broken file) is not an error: the job falls back to defaults
+and says so in the inject. Fewer than seven leisure hours in the plan are
+topped up to seven by the job - the guarantee is the mechanism's, not the
+model's.
+
+A tick lands as `wake` and starts a turn once the master is idle; a busy
+master or a message less than five minutes old moves it five minutes on,
+up to three times, so it never cuts into a live exchange. If a `schedule`
+inject of the model's own is due later in the same hour, the tick goes in
+as `normal` instead and rides into that turn with it - one turn, both
+reasons, neither swallowed. The cron sits at `:07`, not `:00`, because
+rotation is on the hour and a tick waiting in the queue counts as a busy
+master.
+
+Nothing of this reaches Telegram by itself: a turn started by an inject
+publishes no reply, so the only voice in it is the `say` tool.
+Switches: `досуг: выкл` as the first line of the file for every day, and
+`LEISURE=off` in `.env` to drop the job entirely.
+
 ## Policy (`beaver_agent/policy.py`)
 
 `bypassPermissions` everywhere; the boundary is `PreToolUse` rules declared