feat: implement structured logging for server and client

Server:
- Add pino and pino-http for structured logging
- Create @Logged class decorator using Proxy pattern for automatic method logging
- Add pino redact config for sensitive data (password, token, etc.)
- Move AuthMiddleware to controllers folder (per architecture diagram)
- Add LoggingMiddleware for HTTP request logging
- Replace console.log/error with structured logger in controllers and app.ts
- Decorate all repositories and GPTAdapter with @Logged

Client:
- Add react-native-logs with namespaced loggers (apiLogger, storeLogger)
- Add request/response logging to ApiClient with duration tracking

apps/server/src/logging/logger.ts

@@ -0,0 +1,43 @@
+import pino from "pino";
+
+const isDevelopment = process.env.NODE_ENV !== "production";
+
+export const logger = pino({
+  level: process.env.LOG_LEVEL || (isDevelopment ? "debug" : "info"),
+  redact: {
+    paths: [
+      // Root level
+      "password",
+      "passwordHash",
+      "token",
+      // One level deep (e.g. user.password)
+      "*.password",
+      "*.passwordHash",
+      "*.token",
+      // In arrays (for 'args' in decorator)
+      "args[*].password",
+      "args[*].passwordHash",
+      "args[*].token",
+    ],
+    censor: "[REDACTED]",
+  },
+  transport: isDevelopment
+    ? {
+        target: "pino-pretty",
+        options: {
+          colorize: true,
+          translateTime: "SYS:HH:MM:ss",
+          ignore: "pid,hostname",
+        },
+      }
+    : undefined,
+  base: {
+    service: "caldav-server",
+  },
+});
+
+export function createLogger(module: string) {
+  return logger.child({ module });
+}
+
+export type Logger = pino.Logger;