Initial project setup for PhaseFlow

Set up Next.js 16 project with TypeScript for a training decision app
that integrates menstrual cycle phases with Garmin biometrics for
Hashimoto's thyroiditis management.

Stack: Next.js 16, React 19, Tailwind/shadcn, PocketBase, Drizzle,
Zod, Resend, Vitest, Biome, Lefthook, Nix dev environment.

Includes:
- 7 page routes (dashboard, login, settings, calendar, history, plan)
- 12 API endpoints (garmin, user, cycle, calendar, overrides, cron)
- Core lib utilities (decision engine, cycle phases, nutrition, ICS)
- Type definitions and component scaffolding
- Python script for Garmin token bootstrapping
- Initial unit tests for cycle utilities

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/components/dashboard/mini-calendar.tsx

@@ -0,0 +1,29 @@
+// ABOUTME: Compact calendar widget for the dashboard.
+// ABOUTME: Shows current month with color-coded cycle phases.
+interface MiniCalendarProps {
+  currentDate: Date;
+  cycleDay: number;
+  phase: string;
+}
+
+export function MiniCalendar({
+  currentDate,
+  cycleDay,
+  phase,
+}: MiniCalendarProps) {
+  return (
+    <div className="rounded-lg border p-4">
+      <h3 className="font-semibold mb-4">
+        Day {cycleDay} • {phase}
+      </h3>
+      <p className="text-sm text-gray-500">
+        {currentDate.toLocaleDateString("en-US", {
+          month: "long",
+          year: "numeric",
+        })}
+      </p>
+      {/* Full calendar grid will be implemented here */}
+      <p className="text-gray-400 text-xs mt-4">Calendar grid placeholder</p>
+    </div>
+  );
+}