Previously, `StorageService.saveConnection` allowed multiple connections to be marked as `defaultForUploads: true` because it did not unset the flag on existing connections. This caused `loadFromStorage` (which uses `find`) to potentially pick up an old, invalid connection instead of the newly configured one, leading to a loop where the user is asked to configure credentials again.
This change modifies `saveConnection` to iterate through existing connections and unset `defaultForUploads` if the new connection is being saved as the default. This ensures the "default" invariant is maintained.
Added a unit test case to verify this behavior.
Added detailed in-code documentation to `js/services/storageService.js` to explain the `STORE_ACCOUNTS` schema, encryption strategy (NIP-44/NIP-04 fallback), and concurrency handling.
Added `testConnection` to `StorageService` and `testS3Connection` to `r2-s3.js`.
Updated `ProfileModalController` to use the new `storageService.testAccess` method for verifying credentials before saving.
The test logic supports both specific bucket checks (via `HeadBucket`) and general credential checks (via `ListBuckets`).
- Adds `js/services/storageService.js` to manage encrypted connection credentials.
- Implements AES-GCM encryption for payloads using a random Master Key.
- Implements NIP-04/NIP-44 encryption for the Master Key using the user's Nostr signer.
- Provides public API for saving, retrieving, and listing connections.
- Persists data to `bitvid-storage` IndexedDB.
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