feat: initial implementation of Oriana uptime monitor

Implements a full-stack uptime monitoring application with:
- HTTPS, HTTPS keyword, HTTPS status, port, and MongoDB Atlas monitor types
- Cron-based monitoring engine with webhook notifications on status changes
- Discord OAuth2 admin panel (single-owner)
- Public status page with category grouping and failure reason display
- Admin dashboard with sortable monitors table and detailed failure info
- SQLite persistence with migration support

vitest.config.ts

@@ -0,0 +1,18 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  test: {
+    coverage: {
+      provider: "v8",
+      include: ["src/**/*.ts"],
+      exclude: ["src/types/**/*.ts"],
+      thresholds: {
+        statements: 100,
+        branches: 100,
+        functions: 100,
+        lines: 100,
+      },
+    },
+    include: ["test/**/*.spec.ts"],
+  },
+});