feat(logging): default to paused state and prevent performance hit via frontend wrapper

- Default LOG_PAUSED to true in backend.
- Combine tauri_plugin_log filters to drop backend logs when paused.
- Create frontend logger wrapper to intercept and drop logs before IPC when paused.
- Sync LogsView state directly with logger wrapper and handle initialization races.

src/ipc.ts

@@ -1,5 +1,5 @@
 import { invoke as tauriInvoke } from '@tauri-apps/api/core';
-import { error as logError } from '@tauri-apps/plugin-log';
+import { error as logError } from './utils/logger';
 import { listen as tauriListen, type Event, type EventCallback, type UnlistenFn } from '@tauri-apps/api/event';
 import type { DownloadCategory } from './bindings/DownloadCategory';
 import type { DownloadProgressEvent } from './bindings/DownloadProgressEvent';