fix: resolve multiple bugs and code quality issues

[SYM01]

Summary

• Critical logic bug: refreshProxy() used the in operator on an array (proxyType in ["system", "direct"]), which checks for index keys (0, 1), not values — always false. Preset profiles were never skipped during refresh.
• Service worker crash: new URL(details.url) in background.ts threw on malformed URLs, silently killing the service worker. Wrapped in try/catch.
• Null dereference: document && document.body.setAttribute(...) in preference.ts guarded document but not document.body. Replaced with optional chaining.
• deepClone robustness: Replaced JSON.parse(JSON.stringify()) with structuredClone(), which correctly handles Date, Map, Set, and undefined values (available in Chrome 98+ / Firefox 94+).
• window.open() bug: PopupPage.vue passed import.meta.url as the window target name instead of '_blank', causing unexpected window reuse behavior.
• Side-effect misuse: .map() was used for side-effect-only iterations in profile.ts and auth.ts (creating wasted arrays). Replaced with .forEach().
• Debug code removed: Leftover console.log calls removed from ThemeSwitcher.vue, AutoSwitchInput.vue, background.ts, and PopupPage.vue.
• i18n typo: "Advance Config" → "Advanced Config" in messages.json.

Test plan

• All 44 existing unit tests pass (npm test)
• Proxy refresh correctly skips system/direct profiles after the in → includes fix
• No service worker crashes on navigating to pages with unusual URLs
• Theme switching works correctly without console noise
• Opening Config page from popup opens in a new tab (not reusing existing window)
• deepClone works correctly for all profile types

🤖 Generated with Claude Code

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request delivers a comprehensive set of bug fixes and code quality improvements across various parts of the application. It addresses critical logical errors, enhances the stability of the service worker, prevents potential runtime crashes, and refines core utility functions. The changes also include correcting user interface behaviors and cleaning up development artifacts, leading to a more robust, reliable, and maintainable codebase.

Highlights

• Critical Logic Bug Fix: The refreshProxy() function incorrectly used the in operator on an array (proxyType in ["system", "direct"]), which checks for index keys instead of values. This bug prevented preset profiles from being correctly skipped during refresh. The fix replaces in with includes().
• Service Worker Stability Improvement: The new URL(details.url) constructor in background.ts could cause the service worker to crash when encountering malformed URLs. This operation is now wrapped in a try/catch block to prevent crashes and ensure service worker resilience.
• Null Dereference Prevention: In preference.ts, the code document && document.body.setAttribute(...) guarded document but not document.body, creating a potential null dereference. This has been resolved by using optional chaining (document?.body?.setAttribute(...)) for safer access.
• Enhanced Deep Cloning Robustness: The deepClone() utility function has been upgraded from JSON.parse(JSON.stringify()) to structuredClone(). This change significantly improves cloning capabilities, allowing correct handling of Date, Map, Set, undefined, and other complex data types, as well as circular references.
• Window Opening Behavior Correction: In PopupPage.vue, window.open() was incorrectly using import.meta.url as the window target name instead of '_blank'. This caused unexpected window reuse behavior, which has now been fixed to always open in a new tab.
• Optimized Array Iteration: Instances where .map() was used solely for side-effect-only iterations (e.g., onProfileUpdateListeners.map(...) in profile.ts and auths.map(...) in auth.ts) have been replaced with .forEach(). This avoids the creation of unnecessary new arrays and improves code clarity.
• Debug Code Cleanup: Several leftover console.log statements, used for debugging, have been removed from ThemeSwitcher.vue, AutoSwitchInput.vue, background.ts, and PopupPage.vue to clean up the codebase.
• Internationalization Typo Correction: A minor typo in messages.json has been fixed, changing "Advance Config" to "Advanced Config" for better readability and correctness.

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Changelog

• public/_locales/en/messages.json
  • Corrected a typo in the 'config_section_advance' message from 'Advance Config' to 'Advanced Config'.
• src/background.ts
  • Wrapped the new URL(details.url) call in a try-catch block to prevent service worker crashes on malformed URLs.
  • Removed a console.log statement related to 'onResponseStarted'.
• src/components/configs/AutoSwitchInput.vue
  • Removed a debug console.log("test") statement from the URL validator.
• src/components/controls/ThemeSwitcher.vue
  • Removed a console.log statement that logged the current dark mode.
• src/pages/PopupPage.vue
  • Changed the window.open() target from import.meta.url to "_blank" to ensure new tabs are opened.
  • Removed a console.log statement from the setProxyByProfile function.
• src/services/preference.ts
  • Updated document.body access to use optional chaining (document?.body?.setAttribute and document?.body?.removeAttribute) for safer null handling.
• src/services/profile.ts
  • Replaced .map() with .forEach() for iterating onProfileUpdateListeners as no new array was intended.
• src/services/proxy/auth.ts
  • Replaced .map() with .forEach() when iterating through auths as no new array was intended.
• src/services/proxy/index.ts
  • Corrected the logic for checking preset profiles by changing current.activeProfile.proxyType in ["system", "direct"] to ["system", "direct"].includes(current.activeProfile.proxyType).
• src/services/utils.ts
  • Replaced JSON.parse(JSON.stringify(obj)) with structuredClone(obj) in the deepClone function for more robust object cloning.

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[gemini-code-assist]

Code Review

This pull request addresses a good number of bugs and code quality issues, from critical logic errors like the misuse of the in operator to robustness improvements and removal of debug code. The changes are well-described and the fixes are generally excellent.

I've found one critical issue with the switch to structuredClone for deepClone. While structuredClone is generally superior, it cannot handle Vue's reactive Proxy objects, which contradicts the documented purpose of the deepClone function in this codebase. This change could lead to runtime errors when saving profiles. I've left a specific comment with a suggestion to revert this particular change.

[gemini-code-assist]

The switch to structuredClone() introduces a critical issue. The documentation for deepClone states its purpose is to 'remove all Proxy objects (e.g., from Vue reactivity)', which is necessary before saving to chrome.storage.

However, structuredClone() cannot clone Proxy objects and will throw a DataCloneError. The previous JSON.parse(JSON.stringify()) implementation correctly handled this by serializing the underlying raw object from the proxy.

While some call sites might use toRaw() before cloning, others (like in profile.ts) may not, leading to runtime errors when saving profiles. Given this, I recommend reverting to the previous implementation to ensure reactive objects are handled correctly.

Suggested change

	return structuredClone(obj);
	return JSON.parse(JSON.stringify(obj));