Add events module with dashboard UI, scheduling, signups, and settings updates; extend env/readme.

src/utils/logger.ts

@@ -1,5 +1,25 @@
+type LogLevel = 'INFO' | 'WARN' | 'ERROR';
+type LogSink = (entry: { level: LogLevel; message: string; timestamp: number }) => void;
+
+let sink: LogSink | null = null;
+
 export const logger = {
-  info: (msg: string) => console.log(`[INFO] ${msg}`),
-  warn: (msg: string) => console.warn(`[WARN] ${msg}`),
-  error: (msg: string, err?: unknown) => console.error(`[ERROR] ${msg}`, err)
+  info: (msg: string) => {
+    const entry = { level: 'INFO' as LogLevel, message: msg, timestamp: Date.now() };
+    if (sink) sink(entry);
+    console.log(`[INFO] ${msg}`);
+  },
+  warn: (msg: string) => {
+    const entry = { level: 'WARN' as LogLevel, message: msg, timestamp: Date.now() };
+    if (sink) sink(entry);
+    console.warn(`[WARN] ${msg}`);
+  },
+  error: (msg: string, err?: unknown) => {
+    const entry = { level: 'ERROR' as LogLevel, message: msg, timestamp: Date.now() };
+    if (sink) sink(entry);
+    console.error(`[ERROR] ${msg}`, err);
+  },
+  setSink: (fn: LogSink | null) => {
+    sink = fn;
+  }
 };