refactor(core): move app para src e padroniza estrutura

src/app/(dashboard)/reports/category-trends/layout.tsx

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+import { RiFileChartLine } from "@remixicon/react";
+import PageDescription from "@/shared/components/page-description";
+
+export const metadata = {
+	title: "Tendências | OpenMonetis",
+};
+
+export default function RootLayout({
+	children,
+}: {
+	children: React.ReactNode;
+}) {
+	return (
+		<section className="space-y-6 pt-4">
+			<PageDescription
+				icon={<RiFileChartLine />}
+				title="Tendências"
+				subtitle="Acompanhe a evolução dos seus gastos e receitas por categoria ao longo do tempo."
+			/>
+			{children}
+		</section>
+	);
+}

src/app/(dashboard)/reports/category-trends/loading.tsx

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+import { CategoryReportSkeleton } from "@/shared/components/skeletons/category-report-skeleton";
+
+export default function Loading() {
+	return (
+		<main className="flex flex-col gap-6">
+			<CategoryReportSkeleton />
+		</main>
+	);
+}

src/app/(dashboard)/reports/category-trends/page.tsx

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+import { redirect } from "next/navigation";
+import type { Categoria } from "@/db/schema";
+import { fetchCategoryChartData } from "@/features/reports/category-chart-queries";
+import { fetchCategoryReport } from "@/features/reports/category-report-queries";
+import { fetchUserCategories } from "@/features/reports/category-trends-queries";
+import { CategoryReportPage } from "@/features/reports/components/category-report-page";
+import type {
+	CategoryOption,
+	FilterState,
+} from "@/features/reports/components/types";
+import { validateDateRange } from "@/features/reports/utils";
+import { getUserId } from "@/shared/lib/auth/server";
+import type { CategoryReportFilters } from "@/shared/lib/types/reports";
+import { addMonthsToPeriod, getCurrentPeriod } from "@/shared/utils/period";
+
+type PageSearchParams = Promise<Record<string, string | string[] | undefined>>;
+
+type PageProps = {
+	searchParams?: PageSearchParams;
+};
+
+const getSingleParam = (
+	params: Record<string, string | string[] | undefined> | undefined,
+	key: string,
+): string | null => {
+	const value = params?.[key];
+	if (!value) return null;
+	return Array.isArray(value) ? (value[0] ?? null) : value;
+};
+
+export default async function Page({ searchParams }: PageProps) {
+	// Get authenticated user
+	const userId = await getUserId();
+
+	// Resolve search params
+	const resolvedSearchParams = searchParams ? await searchParams : undefined;
+
+	// Extract query params
+	const inicioParam = getSingleParam(resolvedSearchParams, "inicio");
+	const fimParam = getSingleParam(resolvedSearchParams, "fim");
+	const categoriasParam = getSingleParam(resolvedSearchParams, "categorias");
+
+	// Calculate default period (last 6 months)
+	const currentPeriod = getCurrentPeriod();
+	const defaultStartPeriod = addMonthsToPeriod(currentPeriod, -5); // 6 months including current
+
+	// Use params or defaults
+	const startPeriod = inicioParam ?? defaultStartPeriod;
+	const endPeriod = fimParam ?? currentPeriod;
+
+	// Parse selected categories
+	const selectedCategoryIds = categoriasParam
+		? categoriasParam.split(",").filter(Boolean)
+		: [];
+
+	// Validate date range
+	const validation = validateDateRange(startPeriod, endPeriod);
+	if (!validation.isValid) {
+		// Redirect to default if validation fails
+		redirect(
+			`/reports/category-trends?inicio=${defaultStartPeriod}&fim=${currentPeriod}`,
+		);
+	}
+
+	// Fetch all categories for the user
+	const categoriaRows = await fetchUserCategories(userId);
+
+	// Map to CategoryOption format
+	const categoryOptions: CategoryOption[] = categoriaRows.map(
+		(cat: Categoria): CategoryOption => ({
+			id: cat.id,
+			name: cat.name,
+			icon: cat.icon,
+			type: cat.type as "despesa" | "receita",
+		}),
+	);
+
+	// Build filters for data fetching
+	const filters: CategoryReportFilters = {
+		startPeriod,
+		endPeriod,
+		categoryIds:
+			selectedCategoryIds.length > 0 ? selectedCategoryIds : undefined,
+	};
+
+	// Fetch report data
+	const reportData = await fetchCategoryReport(userId, filters);
+
+	// Fetch chart data with same filters
+	const chartData = await fetchCategoryChartData(
+		userId,
+		startPeriod,
+		endPeriod,
+		selectedCategoryIds.length > 0 ? selectedCategoryIds : undefined,
+	);
+
+	// Build initial filter state for client component
+	const initialFilters: FilterState = {
+		selectedCategories: selectedCategoryIds,
+		startPeriod,
+		endPeriod,
+	};
+
+	return (
+		<main className="flex flex-col gap-6">
+			<CategoryReportPage
+				initialData={reportData}
+				categories={categoryOptions}
+				initialFilters={initialFilters}
+				chartData={chartData}
+			/>
+		</main>
+	);
+}