feat: migrate to Nuxt 4 (Nitro) and Tailwind CSS v3

server/lib/config.ts

@@ -0,0 +1,65 @@
+import type { Env, Config, Route } from "./types";
+import { log } from "./lib/log";
+
+const CONFIG_CACHE_TTL = 60_000;
+const ROUTES_KEY = "config:routes";
+let configCache: { config: Config; expiresAt: number } | null = null;
+
+export async function loadRoutes(kv: KVNamespace): Promise<Route[]> {
+  try {
+    const stored = await kv.get<Route[]>(ROUTES_KEY, "json");
+    if (stored) return normalizeRoutes(stored);
+  } catch (err) {
+    log.warn({ err }, "Failed to load routes from KV");
+  }
+  return [];
+}
+
+/**
+ * Migrate legacy single-target routes (`target`) to the array form (`targets`).
+ */
+function normalizeRoutes(routes: Route[]): Route[] {
+  return routes.map((r) => {
+    if (r.targets && r.targets.length > 0) return r;
+    const legacy = (r as Route & { target?: Route["targets"][number] }).target;
+    if (!legacy) return r;
+    const { target: _target, ...rest } = r as Route & { target?: Route["targets"][number] };
+    return { ...rest, targets: [legacy] };
+  });
+}
+
+export async function saveRoutes(kv: KVNamespace, routes: Route[]): Promise<void> {
+  await kv.put(ROUTES_KEY, JSON.stringify(routes));
+  configCache = null;
+}
+
+/** Drop the in-memory route/config cache (used by the admin API and tests). */
+export function invalidateConfigCache(): void {
+  configCache = null;
+}
+
+export async function loadConfig(env: Env): Promise<Config> {
+  if (configCache && Date.now() < configCache.expiresAt) {
+    return configCache.config;
+  }
+
+  const routes = await loadRoutes(env.KV);
+
+  const config: Config = {
+    baseUrl: env.BASE_URL ?? "https://webhooker.example.workers.dev",
+    github: {
+      webhookSecret: env.GITHUB_WEBHOOK_SECRET,
+      appId: Number(env.GITHUB_APP_ID ?? 0),
+      privateKey: env.GITHUB_PRIVATE_KEY ?? "",
+      clientId: env.GITHUB_CLIENT_ID ?? "",
+      clientSecret: env.GITHUB_CLIENT_SECRET ?? "",
+    },
+    discord: {
+      token: env.DISCORD_TOKEN ?? "",
+    },
+    routes,
+  };
+
+  configCache = { config, expiresAt: Date.now() + CONFIG_CACHE_TTL };
+  return config;
+}