SMT Stability, Performance & Quality-of-Life Update

[coresync2k]

Fixed

• Fixed Bug repport #210: Selecting Super/Titan, Command Carrier, Black Ops, Jump Freighter, or Rorqual in the Jump Planner no longer crashes SMT.
• Fixed culture-dependent jump-range parsing and removed the duplicate default ship selection.
• Fixed Decloak and Combat Notifications reset on Start #186: Decloak and combat notification settings now remain disabled after restarting SMT.
• Character settings are saved immediately when the Character Settings window is closed.
• Fixed failed ESI waypoint requests leaving route synchronization permanently stuck.
• Fixed several shutdown races involving background updates, file watchers, timers, and the zKill feed.
• Fixed concurrent access to character, alliance, intel, combat-log, and sovereignty data.
• Fixed duplicate jump bridges being added during ESI discovery.
• Fixed Jump Planner alternative midpoint insertion and waypoint reordering.
• Fixed invalid or missing faction-warfare systems interrupting the complete update.
• Fixed corrupted configuration or layout files preventing normal startup by loading the latest valid backup.
• Fixed resources remaining active after closing overlays, authentication windows, or SMT.

Added

• Added atomic saving for character data, application settings, map layouts, anomaly data, jump bridges, and intel filters.
• Added automatic .bak backups and recovery for serialized application data.
• Added a rotating local diagnostic log at %APPDATA%\SMT\Logs\SMT.log.
• Added application status and error information to the main status bar.
• Added detailed Jump Planner summaries showing jumps, midpoints, total light-years, and failed route segments.
• Added drag-and-drop reordering for capital-route waypoints.
• Added duplicate prevention for waypoints and avoided systems.
• Added a button to copy the complete capital route to the clipboard.
• Added localized Jump Planner status messages for English and Chinese.

Improved

• Replaced blocking background workers, .Result, Thread.Sleep, and unmanaged update threads with cancellable asynchronous tasks.
• Reworked the zKill feed to use a shared HTTP client, proper cancellation, rate-limit handling, expiration cleanup, and non-blocking alliance resolution.
• Improved ESI, EVE-Scout, Dotlan, sovereignty, and server-status update handling.
• Sovereignty campaigns are now updated in place on the UI thread instead of repeatedly rebuilding the complete collection.
• Optimized faction-warfare classification by replacing repeated list scans with indexed lookups.
• Improved character and alliance identity-cache thread safety.
• The EVE log folder can now be changed without restarting SMT.
• Switching log folders preserves current intel data, combat-log data, and configured filters.
• Map colour changes now use debounced redraws.
• Hidden map views no longer perform unnecessary periodic redraws.
• Overlay timers and event handlers are correctly released when an overlay closes.
• Improved cleanup of HTTP listeners, timers, audio devices, file watchers, HTTP clients, and the tray icon.
• Improved error reporting across loading, saving, authentication, routing, and background-update operations.

Technical

• Confirmed that all active SMT solution projects target .NET 8.
• The bundled legacy External/ESI.NET source remains multi-targeted, including .NET 7, but is not part of the active SMT solution build.