feat(v0.5.0): history + streak + heatmap, quiet hours, partial reps, README

== История и стрики (#1) ==
- HistoryEntry { ts, exerciseId, action: done|skip|snooze, actualReps? }
  персистится в app-state.json, лимит 10k записей (~3 года), trim oldest 10%
- markDone/snooze/skip пишут в историю; markDone принимает optional actualReps
- IPC: getHistory(sinceMs?), clearHistory(beforeTs?) + preload bindings
- Renderer helpers (src/renderer/src/lib/history.ts):
  * dayKey(ts) — YYYY-MM-DD local
  * dailyReps(entries, exs, dayKey) — суммирует actualReps || planned
  * dailyRepsRange(entries, exs, days) — для heatmap, заполняет gaps нулями
  * currentStreak(entries) — consecutive days, today или yesterday (grace)
- Dashboard теперь 4 hero-карточки: Today (повторов за день) / Streak
  (дней подряд) / Next / Tracking
- Новый компонент HistoryHeatmap — GitHub-style 12-недельный календарь
  с 5 интенсивностями, локализованными подписями дней/месяцев

== Тихие часы (#2) ==
- shared/types.ts: QuietHours { enabled, from, to, days[] } + isQuietAt()
  helper с правильной обработкой wrap-around окон (22:00→08:00)
- DEFAULT_SETTINGS.quietHours = disabled, 22:00→08:00, все дни
- main/scheduler.ts: проверка isQuietAt перед fire; deferred fires
  поднимаются после окончания окна
- Settings UI: новая секция "Тихие часы" с toggle, time-pickers,
  day-of-week pills

== Сделал частично (#3) ==
- ReminderApp: stepper [−][число][+] вокруг счётчика повторов
- При adjusted (actualReps !== exercise.reps) число подсвечивается accent
  и появляется подпись "Засчитаем X из Y"
- markDone передаёт actualReps только если юзер реально изменил —
  иначе undefined чтобы история фиксировала планируемое значение чисто

== README.md (#4) ==
- Описание, фичи, скриншоты (TODO-плейсхолдер), установка, dev-команды,
  архитектура, тесты, stack, ссылка на RELEASING.md
- Бэйджи version / tests / platform

== i18n ==
- ~14 новых ключей × 2 языка: dashboard.stat.today_done, streak,
  settings.quiet.* (3 row'а), reminder.partial

== Тесты — 51 (было 33) ==
- shared/quiet-hours.test.ts (5): disabled, same-day, wrap-around,
  day filtering, zero-length
- renderer/lib/history.test.ts (13): dayKey, dailyReps (planned vs
  actual vs ignore non-done), currentStreak (empty, today gap,
  consecutive, yesterday grace, multi-entry same day), dailyRepsRange

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/renderer/src/pages/Dashboard.tsx

@@ -1,13 +1,15 @@
-import { useMemo, useState } from 'react'
+import { useEffect, useMemo, useState } from 'react'
 import { AnimatePresence, motion } from 'framer-motion'
-import { Plus, Pause, Play, Flame, Activity } from 'lucide-react'
+import { Plus, Pause, Play, Flame, Activity, TrendingUp } from 'lucide-react'
 import { useAppStore } from '../store/appStore'
 import { ExerciseCard } from '../components/ExerciseCard'
 import { ExerciseEditor } from '../components/ExerciseEditor'
+import { HistoryHeatmap } from '../components/HistoryHeatmap'
 import { Button } from '../components/ui/Button'
-import type { Exercise } from '@shared/types'
+import type { Exercise, HistoryEntry } from '@shared/types'
 import { formatCountdown } from '../lib/format'
 import { useT } from '../i18n'
+import { currentStreak, dailyReps, todayKey } from '../lib/history'
 
 export default function Dashboard(): JSX.Element {
   const state = useAppStore((s) => s.state)
@@ -20,6 +22,18 @@ export default function Dashboard(): JSX.Element {
   const settings = state?.settings
   const gamesEnabled = Object.values(state?.gamesEnabled ?? {}).some(Boolean)
 
+  // Local history mirror; reloaded whenever app-state changes.
+  const [history, setHistory] = useState<HistoryEntry[]>([])
+  useEffect(() => {
+    void window.api.getHistory().then(setHistory)
+  }, [state])
+
+  const todayDone = useMemo(
+    () => dailyReps(history, exercises, todayKey()),
+    [history, exercises]
+  )
+  const streak = useMemo(() => currentStreak(history), [history])
+
   const stats = useMemo(() => {
     const enabled = exercises.filter((e) => e.enabled)
     const next = enabled
@@ -94,13 +108,20 @@ export default function Dashboard(): JSX.Element {
           </div>
         </div>
 
-        <div className="grid grid-cols-1 sm:grid-cols-3 gap-3 mb-8">
+        <div className="grid grid-cols-2 lg:grid-cols-4 gap-3 mb-8">
           <HeroStat
             tone="accent"
-            label={t('dashboard.stat.active')}
-            value={`${stats.active}`}
-            subvalue={t('dashboard.stat.active.of', { total: stats.total })}
-            icon={<Activity size={14} strokeWidth={2.6} />}
+            label={t('dashboard.stat.today_done')}
+            value={`${todayDone}`}
+            subvalue={t('dashboard.stat.today_done.subtitle')}
+            icon={<TrendingUp size={14} strokeWidth={2.6} />}
+          />
+          <HeroStat
+            tone={streak > 0 ? 'warning' : 'muted'}
+            label={t('dashboard.stat.streak')}
+            value={`${streak}`}
+            subvalue={t('dashboard.stat.streak.subtitle', { n: streak })}
+            icon={<Flame size={14} strokeWidth={2.6} />}
           />
           <HeroStat
             tone="info"
@@ -117,7 +138,7 @@ export default function Dashboard(): JSX.Element {
                 ? t('dashboard.stat.next.subtitle_paused')
                 : t('dashboard.stat.next.subtitle_running')
             }
-            icon={<Flame size={14} strokeWidth={2.6} />}
+            icon={<Activity size={14} strokeWidth={2.6} />}
           />
           <HeroStat
             tone={gamesEnabled ? 'success' : 'muted'}
@@ -143,6 +164,16 @@ export default function Dashboard(): JSX.Element {
           />
         </div>
 
+        {history.length > 0 && (
+          <div className="mb-8">
+            <HistoryHeatmap
+              history={history}
+              exercises={exercises}
+              lang={lang}
+            />
+          </div>
+        )}
+
         {paused && (
           <motion.div
             initial={{ opacity: 0, y: -4 }}
@@ -214,7 +245,7 @@ function HeroStat({
   subvalue,
   icon
 }: {
-  tone: 'accent' | 'info' | 'success' | 'muted'
+  tone: 'accent' | 'info' | 'success' | 'warning' | 'muted'
   label: string
   value: string
   subvalue?: string
@@ -227,7 +258,9 @@ function HeroStat({
         ? 'bg-info'
         : tone === 'success'
           ? 'bg-success'
-          : 'bg-text/40'
+          : tone === 'warning'
+            ? 'bg-warning'
+            : 'bg-text/40'
 
   return (
     <div className="bg-surface rounded-2xl p-5 shadow-card dark:ring-0.5 dark:ring-hairline/30">