test: add unit tests for various components and utilities

- Created tests for formatBytes function to ensure correct formatting of byte values.
- Implemented tests for InjectContext to validate resource injection and cleanup.
- Added tests for logo-class helpers to verify platform alias mappings.
- Developed tests for nezha-api functions to check API response handling.
- Introduced tests for static geographic data to validate country coordinates and GeoJSON structure.
- Created comprehensive tests for utility functions including date formatting and public note parsing.
- Added tests for Server page to ensure correct rendering and functionality.
- Implemented tests for simple pages including error handling and navigation.
- Set up testing environment with Vitest and configured coverage reporting.

src/test/lib/static-data.test.ts

@@ -0,0 +1,25 @@
+import { describe, expect, it } from "vitest";
+
+import { geoJsonString } from "@/lib/geo-json-string";
+import { countryCoordinates } from "@/lib/geo-limit";
+
+describe("static geographic data", () => {
+	it("provides known country coordinate metadata", () => {
+		expect(countryCoordinates.CN).toMatchObject({
+			lat: 35,
+			lng: 105,
+			name: "China",
+		});
+		expect(countryCoordinates.US.name).toBe("United States");
+	});
+
+	it("ships parseable GeoJSON feature collection data", () => {
+		const geoJson = JSON.parse(geoJsonString) as {
+			type: string;
+			features: unknown[];
+		};
+
+		expect(geoJson.type).toBe("FeatureCollection");
+		expect(geoJson.features.length).toBeGreaterThan(0);
+	});
+});