💡 What

Extracted several dynamically compiled RegExp instances into static final or top-level final variables across API adapters and UI widgets:

1. Size parsing regex in NexusPHPWebAdapter.
2. HTML URL parsing regex in NexusPHPWebAdapter.
3. Whitespace trimming regex in NexusPHPAdapter.
4. Page title parsing regex in WebLoginWidget.

🎯 Why

In Dart, dynamically constructing RegExp instances inside loops (such as parsing multiple sections/categories or traversing DOM trees inside isolates) incurs a performance penalty due to repeated pattern compilation. Caching them eliminates this overhead.

📊 Impact

• Eliminates redundant RegExp compilations during JSON and HTML parsing.
• Improves parsing speed, particularly for large torrent search results processed within isolates.
• Reduces CPU usage during the testConnection and getDetail processes.

🔬 Measurement

Run the project's test suite and benchmarks to verify parsing logic remains correct. The tests passed successfully via flutter test.

PR created automatically by Jules for task 13672138189137458869 started by @JustLookAtNow