v0.5.0

Highlights

• Added persistent diagnostics for Python faults, uncaught exceptions, and Chromium logs.
• Hardened Windows startup by preparing QtWebEngine earlier and defaulting to software OpenGL for better stability.
• Moved Tor runtime state out of the repository and added stale lock cleanup.
• Added diagnostics access from the UI, a Tools menu entry, and the Ctrl+Alt+D shortcut.
• Updated Windows launchers to use pinned dependency minimums and automatically open the diagnostics folder on startup failure.

Included changes

• Configurable diagnostics paths in config/config.json.
• New ultrabrowser/diagnostics.py runtime diagnostics helper.
• README and changelog updated for the new startup and diagnostics workflow.