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/shared/types.ts

@@ -13,6 +13,19 @@ export type NotificationMode = 'toast' | 'modal' | 'both'
 export type Theme = 'light' | 'dark' | 'system'
 export type Language = 'ru' | 'en'
 
+/**
+ * Hours when reminders are silenced. `from`/`to` are "HH:MM" 24h strings,
+ * `days` are weekday indices 0=Sun..6=Sat. Empty `days` = applies every day.
+ * If `to <= from` the window wraps across midnight (e.g. 22:00 → 07:00).
+ */
+export type QuietHours = {
+  enabled: boolean
+  from: string
+  to: string
+  /** Days when the quiet window is active. */
+  days: number[]
+}
+
 export type Settings = {
   globalEnabled: boolean
   notificationMode: NotificationMode
@@ -23,6 +36,7 @@ export type Settings = {
   theme: Theme
   language: Language
   snoozeMinutes: number
+  quietHours: QuietHours
 }
 
 export type AppState = {
@@ -30,6 +44,18 @@ export type AppState = {
   settings: Settings
   challenges: Challenge[]
   gamesEnabled: Partial<Record<GameId, boolean>>
+  history?: HistoryEntry[]
+}
+
+export type HistoryAction = 'done' | 'skip' | 'snooze'
+
+export type HistoryEntry = {
+  /** ms epoch */
+  ts: number
+  exerciseId: string
+  action: HistoryAction
+  /** When user did less than planned. Only meaningful for `done`. */
+  actualReps?: number
 }
 
 export type Tick = {
@@ -141,7 +167,36 @@ export const DEFAULT_SETTINGS: Settings = {
   startMinimized: false,
   theme: 'light',
   language: 'ru',
-  snoozeMinutes: 5
+  snoozeMinutes: 5,
+  quietHours: {
+    enabled: false,
+    from: '22:00',
+    to: '08:00',
+    days: [0, 1, 2, 3, 4, 5, 6]
+  }
+}
+
+/**
+ * Returns true if `now` falls inside the quiet window. Handles wrap-around
+ * windows (e.g. 22:00 → 08:00). Exposed from shared so both main scheduler
+ * and renderer settings UI can use the same logic.
+ */
+export function isQuietAt(qh: QuietHours, now: Date): boolean {
+  if (!qh.enabled) return false
+  const dow = now.getDay() // 0..6
+  if (qh.days.length > 0 && !qh.days.includes(dow)) return false
+  const [fh, fm] = qh.from.split(':').map(Number)
+  const [th, tm] = qh.to.split(':').map(Number)
+  const cur = now.getHours() * 60 + now.getMinutes()
+  const fromMin = fh * 60 + fm
+  const toMin = th * 60 + tm
+  if (fromMin === toMin) return false
+  if (fromMin < toMin) {
+    // Same-day window.
+    return cur >= fromMin && cur < toMin
+  }
+  // Wraps midnight: active if after `from` today OR before `to` today.
+  return cur >= fromMin || cur < toMin
 }
 
 export const SAMPLE_EXERCISES: Omit<Exercise, 'id' | 'nextFireAt'>[] = [