feat: initial project scaffold with CI/CD and Docker deployment

Next.js 15 + Tailwind CSS v4 week calendar showing Six Flags park hours.
Scrapes the internal CloudFront API, stores results in SQLite.
Includes Dockerfile (Debian/Playwright-compatible), docker-compose, and
Gitea Actions pipeline that builds and pushes to the container registry.

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

components/MonthNav.tsx

@@ -0,0 +1,55 @@
+"use client";
+
+import { useRouter } from "next/navigation";
+
+interface MonthNavProps {
+  currentYear: number;
+  currentMonth: number;
+}
+
+const MONTH_NAMES = [
+  "January", "February", "March", "April", "May", "June",
+  "July", "August", "September", "October", "November", "December",
+];
+
+function addMonths(year: number, month: number, delta: number) {
+  const d = new Date(year, month - 1 + delta, 1);
+  return { year: d.getFullYear(), month: d.getMonth() + 1 };
+}
+
+function formatParam(year: number, month: number) {
+  return `${year}-${String(month).padStart(2, "0")}`;
+}
+
+export function MonthNav({ currentYear, currentMonth }: MonthNavProps) {
+  const router = useRouter();
+
+  function navigate(delta: -1 | 1) {
+    const { year, month } = addMonths(currentYear, currentMonth, delta);
+    router.push(`/?month=${formatParam(year, month)}`);
+  }
+
+  const btnStyle = {
+    backgroundColor: "var(--color-surface)",
+    border: "1px solid var(--color-border)",
+    color: "var(--color-text-muted)",
+    padding: "4px 12px",
+    borderRadius: "6px",
+    cursor: "pointer",
+    fontSize: "1rem",
+  };
+
+  return (
+    <div style={{ display: "flex", alignItems: "center", gap: "16px" }}>
+      <button onClick={() => navigate(-1)} style={btnStyle} aria-label="Previous month">
+        ←
+      </button>
+      <h1 style={{ fontSize: "1.25rem", fontWeight: 600, color: "var(--color-text)", margin: 0 }}>
+        {MONTH_NAMES[currentMonth - 1]} {currentYear}
+      </h1>
+      <button onClick={() => navigate(1)} style={btnStyle} aria-label="Next month">
+        →
+      </button>
+    </div>
+  );
+}