feat(logging): capture frontend errors to disk with structured redaction

Frontend half of the logging overhaul.

Capture:
- Add a global error boundary plus window error/unhandledrejection
  handlers that persist renderer errors via tauri-plugin-log (new
  @tauri-apps/plugin-log dependency + log:default capability), so a
  white-screen crash leaves a trace.

Redaction (two layers over every logged value):
- Structured serializer: redact by sensitive property name (arrays and
  nested values included) and by opaque value shape.
- Text layer, the universal final pass: redact URL credentials/query,
  auth schemes, known secret shapes, and named-key array/object values.
  The container rule closes prefix+JSON, double-encoded, and POJO-error
  bypasses regardless of which entrypoint the structured data came from.
- Render Errors as redacted message + native stack across V8 and WebKit
  (macOS/Linux) without depending on a single stack format.
- Bound all inputs and drop oversized JSON to keep the UI responsive.

i18n:
- zh / en / ja / zh-TW for the new log settings and error text.

pnpm-lock.yaml

@@ -98,6 +98,9 @@ importers:
       '@tauri-apps/plugin-dialog':
         specifier: ^2.4.0
         version: 2.4.0
+      '@tauri-apps/plugin-log':
+        specifier: 2.8.0
+        version: 2.8.0
       '@tauri-apps/plugin-process':
         specifier: ^2.0.0
         version: 2.3.0
@@ -1562,6 +1565,9 @@ packages:
   '@tauri-apps/plugin-dialog@2.4.0':
     resolution: {integrity: sha512-OvXkrEBfWwtd8tzVCEXIvRfNEX87qs2jv6SqmVPiHcJjBhSF/GUvjqUNIDmKByb5N8nvDqVUM7+g1sXwdC/S9w==}
 
+  '@tauri-apps/plugin-log@2.8.0':
+    resolution: {integrity: sha512-a+7rOq3MJwpTOLLKbL8d0qGZ85hgHw5pNOWusA9o3cf7cEgtYHiGY/+O8fj8MvywQIGqFv0da2bYQDlrqLE7rw==}
+
   '@tauri-apps/plugin-process@2.3.0':
     resolution: {integrity: sha512-0DNj6u+9csODiV4seSxxRbnLpeGYdojlcctCuLOCgpH9X3+ckVZIEj6H7tRQ7zqWr7kSTEWnrxtAdBb0FbtrmQ==}
 
@@ -4348,6 +4354,10 @@ snapshots:
     dependencies:
       '@tauri-apps/api': 2.8.0
 
+  '@tauri-apps/plugin-log@2.8.0':
+    dependencies:
+      '@tauri-apps/api': 2.8.0
+
   '@tauri-apps/plugin-process@2.3.0':
     dependencies:
       '@tauri-apps/api': 2.8.0