feat: bot assembly, scheduler, and entry point

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/scheduler/reminders.ts

@@ -0,0 +1,34 @@
+import type { Telegraf } from 'telegraf';
+import type { Database } from 'better-sqlite3';
+import { todayString } from '../utils/date';
+import { getScheduleByDate } from '../db/schedule';
+import { getSessionByDate } from '../db/sessions';
+import { formatDuration } from '../utils/duration';
+
+export async function sendMorningReminder(bot: Telegraf, db: Database, chatId: string): Promise<void> {
+  const today = todayString();
+  const scheduled = getScheduleByDate(db, today);
+  if (!scheduled || scheduled.status !== 'pending') return;
+
+  const session = getSessionByDate(db, today);
+  if (session) return;
+
+  await bot.telegram.sendMessage(
+    chatId,
+    `Good morning! You have a ${formatDuration(scheduled.planned_min)} session planned today.\n\nUse /log when done, /skip if you can't make it, or /snooze to remind you later.`
+  );
+}
+
+export async function sendEveningNudge(bot: Telegraf, db: Database, chatId: string): Promise<void> {
+  const today = todayString();
+  const scheduled = getScheduleByDate(db, today);
+  if (!scheduled || scheduled.status !== 'pending') return;
+
+  const session = getSessionByDate(db, today);
+  if (session) return;
+
+  await bot.telegram.sendMessage(
+    chatId,
+    `Still time for today's session (${formatDuration(scheduled.planned_min)})!\n\nUse /log to record it, or /skip to mark it as skipped.`
+  );
+}