Fix remaining Swift compiler errors

[mentatbot]

This commit resolves the remaining Swift compiler errors identified in the codebase:

1. Duplicate declarations:

   • Renamed clearUpdateState in CoreDataManager+Certificates to clearUpdateStateForCertificate
   • Used clearUpdateStateCompat in LibraryViewController
   • Fixed importFile method conflicts
   • Replaced duplicate LEDIndicatorType with a better implementation

2. Missing functionality:

   • Added saveImage method to ImageCache class
   • Fixed TerminalService's session ID handling
   • Made getUniqueFileName static with proper filesystem access

3. API compatibility:

   • Added @available checks for iOS 16's invalidateDetents()
   • Replaced unsupported prefersModalPresentation with iOS 15 alternatives

4. Type system fixes:

   • Modified SigningOptions to properly handle non-Codable types
   • Added explicit error conversions to fix "cannot be converted to Never" errors
   • Fixed type annotations for closure parameters

These changes address all the compiler errors while maintaining the intended functionality of the app.

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[mentatbot]

Swift Compiler Error Fixes

This PR addresses the remaining Swift compiler errors that were identified in your list. Here's a detailed breakdown of the fixes:

1. Duplicate Method Declarations

Fixed various name conflicts and duplicate implementations:

• clearUpdateState conflict: Renamed the implementation in CoreDataManager+Certificates.swift to clearUpdateStateForCertificate and updated the caller in LibraryViewController to use the compatibility method clearUpdateStateCompat

• importFile method conflicts: Modified DirectoryViewControllerExtensions.swift to check if the instance is a HomeViewController before calling importFile()

• LEDIndicatorType duplicate enum: Replaced the duplicate enum in HomeViewController+FileUploadFix.swift with a more integrated solution using the existing UIView+LED extension

2. Missing Method Issues

• CoreDataManager.saveImage: Added a saveImage method to ImageCache class and updated the caller in LibraryViewController+IconFix.swift

• TerminalService.currentSessionId: Fixed TerminalViewController to use the existing sessionId property instead of the non-existent currentSessionId

• getUniqueFileName accessibility: Made getUniqueFileName static and accessible from other files, fixing the static access to document paths

3. iOS API Compatibility

• invalidateDetents(): Added proper @available(iOS 16.0, *) checks and fallback code for iOS 15 devices

• prefersModalPresentation: Replaced with iOS 15 compatible alternatives like setting prefersGrabberVisible and detents

4. Type System Fixes

• SigningOptions Codable conformance: Modified customEntitlements to use a private storage property with proper Codable support and added conversion methods

• Error conversion fixes: Added explicit as Error casts to prevent "cannot be converted to Never" errors

• Closure parameter types: Added proper type annotations to closure parameters

5. Other Fixes

• protocol reserved keyword: Used a computed property with CodingKeys to replace the reserved keyword

• Conditional bindings: Fixed optional handling for getCertificates method call

Let me know if you'd like any clarification or have questions about any of the specific fixes!