feat(desktop): add file logging with electron-log

Logs from both main and renderer processes now persist to
~/Library/Logs/Paseo/main.log (macOS) with automatic rotation.
Removes the unused webview_log IPC handler.

package-lock.json

@@ -16718,6 +16718,15 @@
         "node": ">=8"
       }
     },
+    "node_modules/electron-log": {
+      "version": "5.4.3",
+      "resolved": "https://registry.npmjs.org/electron-log/-/electron-log-5.4.3.tgz",
+      "integrity": "sha512-sOUsM3LjZdugatazSQ/XTyNcw8dfvH1SYhXWiJyfYodAAKOZdHs0txPiLDXFzOZbhXgAgshQkshH2ccq0feyLQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 14"
+      }
+    },
     "node_modules/electron-publish": {
       "version": "26.8.1",
       "resolved": "https://registry.npmjs.org/electron-publish/-/electron-publish-26.8.1.tgz",
@@ -35017,6 +35026,7 @@
       "dependencies": {
         "@getpaseo/cli": "0.1.36",
         "@getpaseo/server": "0.1.36",
+        "electron-log": "^5.4.3",
         "electron-updater": "^6.6.2",
         "ws": "^8.14.2"
       },