Fix file system sync issues, add granular encryption storage and clea…

[Amoghhosamane]

Pull Request Details

Description

This PR addresses several bug fixes and feature requests reported in #66:

• Location delete/unlink leaves stale media-to-location records: Fixed by invalidating cache and notifying the file browser upon media pod service index updates.
• Cache/Notification Sync Issue: Fixed by triggering directory changes when recursive deletes happen.
• Granular Encryption Storage: Refactored the storage logic to split the single aggregate encrypted location file into individual smaller files (enc_place_<uuid>.ttl) under data/encrypted_data/. Added a backward-compatible migration path that automatically loads, splits, and removes the legacy aggregate encrypted_places.ttl file if found.
• Debug 'Clear All Pod Data' Button: Added a dedicated debug action under settings that recursively clears all files and containers in the user's Solid Pod root (preserving /profile to avoid broken sessions), and logs the user out.

Related Issues

• Fixes Minor Bug Fixes and Feature Enhancements for File System & Storage #66

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How To Test?

1. Cache & Directory Sync:
   • Link a location to a media item and then unlink/delete the location. Check that the file browser view updates instantly without stale data.
2. Granular Encryption Storage:
   • Save multiple encrypted places. Verify on your Solid Pod server that they are stored as separate granular files (e.g., enc_place_<uuid>.ttl).
   • Place a legacy encrypted_places.ttl on the Pod, then run the app. Verify that the app successfully parses, migrates it to individual files, and deletes the old aggregate file.
3. Clear All Pod Data:
   • Navigate to Settings and click the red Clear All Pod Data (DEBUG) button. Verify that it wipes all data files on the server (except /profile), logs out, and redirects to login.

Checklist

• Screenshots included here/in linked issue #
• Changes adhere to the style and coding guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Any dependent changes have been merged and published in downstream modules
• The update contains no confidential information
• The update has no duplicated content
• No lint check errors are related to these changes (make prep or flutter analyze lib)
• Integration test dart test output or screenshot included in issue #
• I tested the PR on these devices:
  • Android
  • iOS
  • Linux
  • MacOS
  • Windows
  • Web
• I have identified reviewers
• The PR has been approved by reviewers

Finalising

• Merge dev into the this branch
• Resolve any conflicts
• Add a one line summary into the CHANGELOG.md
• Push to the git repository and review
• Merge the PR into dev
  '@

2. Write body to a temporary file

Set-Content -Path "pr_body.md" -Value $body

3. Create the PR using GitHub CLI

gh pr create --title "Fix file system sync issues, add granular encryption storage and clear all pod data button #66" --body-file pr_body.md --base dev --head Amogh-dev