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feat(media): encrypted file sharing in desktop DMs (NIP-17 Phase 6)

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Add full send + receive encrypted media support in desktop DM chat:
- Paperclip attach button and drag-and-drop in ChatPane (NIP-17 mode only)
- AES-GCM encryption before upload to Blossom server
- ChatMessageEncryptedFileHeaderEvent (kind 15) wrapped in GiftWrap
- sendNip17EncryptedFile() added to IAccount interface and implementations
- DesktopUploadOrchestrator.uploadEncrypted() with proper encrypted hash
- DesktopBlossomClient ByteArray upload overload for encrypted blobs
- LRU cache in EncryptedMediaService to avoid re-downloading
- Error handling: retry on failure, disable send during upload

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
nrobi144
2026-03-19 06:53:36 +02:00
parent c90bf8f610
commit 24d4073b9b
9 changed files with 343 additions and 27 deletions
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amethyst/src/main/java/com/vitorpamplona/amethyst/model/Account.kt
+1 -1
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@@ -1609,7 +1609,7 @@ class Account(
client.send(newEvent, outboxRelays.flow.value + destinationRelays)
}
suspend fun sendNip17EncryptedFile(template: EventTemplate<ChatMessageEncryptedFileHeaderEvent>) {
override suspend fun sendNip17EncryptedFile(template: EventTemplate<ChatMessageEncryptedFileHeaderEvent>) {
if (!isWriteable()) return
val wraps = NIP17Factory().createEncryptedFileNIP17(template, signer)