• audio notes and images in mesh chat
• new mesh routing algorithm
• new tor framework (arti)
• security audit fixes

What's Changed

• Add voice notes and images over BLE mesh (audio + image only) by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/823
• Remove presentationDetents as default is already large by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/826
• Extract sanitization logic into an extension + add tests by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/827
• fix: update georelays workflow no longer commits to main by @a1denvalu3 in https://github.com/permissionlesstech/bitchat/pull/829
• Improve geohash media gating and relay refresh by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/831
• PeerID 24/n: Nostr Transport and Embedding by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/830
• PeerID 25/n: ReadReceipt by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/832
• PeerID 26/n: FingerprintView by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/833
• PeerID 27/n: ContentView and MeshPeerList by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/835
• Fix camera icon in DM sheets by consolidating sheet presentations by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/834
• Fix GeoRelay prefetch isolation by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/837
• PeerID 28/n: ChatViewModel.getShortIDForNoiseKey by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/836
• PeerID 29/n: BLEService + remove dupe funcs from #823 by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/838
• PeerID 30/n: Update some leftovers + case normalization by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/839
• PeerID 31/n: Remove String interop to be explicit by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/840
• Minor cleanup by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/842
• Extract MimeTypes into a separate file + add tests by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/843
• No fallback mime-type + remove dead code by @qalandarov in https://github.com/permissionlesstech/bitchat/pull/844
• Improve mesh media throughput by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/845
• Prevent duplicate action emote echoes by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/852
• Add type-aware REQUEST_SYNC sync rounds by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/853
• Simplify validation, compression heuristics, and notification scheduling by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/841
• Prevent mesh self-sync duplicates by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/856
• Improve background BLE stability and nearby alerts by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/864
• Extract public timeline helpers and rate limiter by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/869
• Extract public message pipeline from ChatViewModel by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/870
• Add source-based routing support by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/862
• Fix verification persistence on iOS when app backgrounds by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/822
• Remove redundant conditional compilation directive by @jithin-renji in https://github.com/permissionlesstech/bitchat/pull/863
• Add localizable strings in show commands view by @Viniciuss-Moreira in https://github.com/permissionlesstech/bitchat/pull/828
• Test Vector Support for Noise XX Handshake by @nadimkobeissi in https://github.com/permissionlesstech/bitchat/pull/885
• Correct the scheme name for macOS target. by @xingheng in https://github.com/permissionlesstech/bitchat/pull/879
• Improve error handling in NostrTransport by @Volgat in https://github.com/permissionlesstech/bitchat/pull/884
• Fix: Replace precondition() crashes with throwing errors in crypto code by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/888
• Refactor: Break circular dependency between CommandProcessor and ChatViewModel by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/889
• Extract GeohashParticipantTracker from ChatViewModel by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/890
• Extract MessageFormattingEngine from ChatViewModel by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/891
• Replace Thread.sleep with cooperative RunLoop delay by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/892
• Consolidate message deduplication into shared MessageDeduplicator by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/893
• Refactor: Simplify ChatViewModel - Phase 1 by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/894
• Add ChatViewModel testability infrastructure and unit tests by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/896
• Fix Swift 6 concurrency warnings by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/897
• Refactor ChatViewModel: extract logic to services by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/898
• Refactor ChatViewModel and fix private chat bugs by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/901
• fix(macos): Propagate environment objects to sheet presentations by @81451 in https://github.com/permissionlesstech/bitchat/pull/900
• Refactor MessageRouter to use generic Transport abstraction by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/902
• refactor: consolidate KeychainHelper into KeychainManager by @malkovitc in https://github.com/permissionlesstech/bitchat/pull/916
• fix(build): exclude allowBluetoothHFP on iOS Simulator by @malkovitc in https://github.com/permissionlesstech/bitchat/pull/918
• fix: harden hex string parsing by @malkovitc in https://github.com/permissionlesstech/bitchat/pull/919
• perf: optimize MessageDeduplicator performance by @malkovitc in https://github.com/permissionlesstech/bitchat/pull/920
• fix: clear DH shared secrets after Noise handshake operations by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/928
• fix: add thread safety to NostrTransport read receipt queue by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/929
• fix: eliminate flaky FragmentationTests with proper async synchronization by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/931
• Implement Geohash Presence (Heartbeats) by @callebtc in https://github.com/permissionlesstech/bitchat/pull/940
• feat: Source routing v2 by @callebtc in https://github.com/permissionlesstech/bitchat/pull/938
• chore: pin swift-secp256k1 to exact version 0.21.1 by @csjones in https://github.com/permissionlesstech/bitchat/pull/934
• fix BCH-01-002: prevent DoS via file storage exhaustion by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/942
• fix BCH-01-004: rate-limit subscription-triggered announces by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/943
• fix(security): reduce timestamp validation window to ±5 minutes [BCH-01-011] by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/944
• fix(security): improve keychain error handling [BCH-01-009] by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/945
• fix(security): prevent notifications from blocked users [BCH-01-012] by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/946
• fix(security): clear iOS app switcher snapshots on panic reset [BCH-01-013] by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/947
• BCH-01-010: Noise Protocol spec compliance improvements by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/948
• fix: update georelays weekly workflow by @a1denvalu3 in https://github.com/permissionlesstech/bitchat/pull/949
• Fix compiler warnings for unmutated variables in BLEService by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/950
• Fix main actor isolation error in clearAppSwitcherSnapshots by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/951
• Fix asymmetric voice/media delivery in private chats by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/952
• Remove security warning from AppInfo view by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/953
• Fix READ receipt status not updating to blue checks by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/954
• Fix topology update running before announce verification by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/955
• Update Tor to 0.4.8.21 with size optimization by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/956
• Revert Noise nonce size to 4 bytes for backward compatibility by @callebtc in https://github.com/permissionlesstech/bitchat/pull/957
• Replace C Tor with Rust Arti by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/958
• Remove dormant wake attempt on Tor foreground restart by @jackjackbits in https://github.com/permissionlesstech/bitchat/pull/959

New Contributors

• @jithin-renji made their first contribution in https://github.com/permissionlesstech/bitchat/pull/863
• @Viniciuss-Moreira made their first contribution in https://github.com/permissionlesstech/bitchat/pull/828
• @nadimkobeissi made their first contribution in https://github.com/permissionlesstech/bitchat/pull/885
• @xingheng made their first contribution in https://github.com/permissionlesstech/bitchat/pull/879
• @Volgat made their first contribution in https://github.com/permissionlesstech/bitchat/pull/884
• @81451 made their first contribution in https://github.com/permissionlesstech/bitchat/pull/900
• @malkovitc made their first contribution in https://github.com/permissionlesstech/bitchat/pull/916

Full Changelog: https://github.com/permissionlesstech/bitchat/compare/v1.4.4...v1.5.0