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Multicam seams: source peer on inbound messages, per-peer frame acks - #199

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Multicam seams: source peer on inbound messages, per-peer frame acks#199
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PR1 of the multicam plan (stacked on #198). Behavior-preserving:

  • MultipeerServiceDelegate.didReceiveMessage(_:from:) — inbound messages carry their source peer. The 1:1 SessionCoordinator deliberately ignores it; the upcoming multicam controller demuxes responses by it.
  • sendMessage/sendOrGoToScanning take an optional explicit peer list (nil = all connected, unchanged).
  • The monitor's per-frame ack (RequestFrame) now addresses only the camera whose frame was consumed. With one peer this is identical to the old broadcast; with N cameras a broadcast ack would let every camera send on one camera's consumed credit.

New test: with two connected peers, each frame's ack targets exactly its source. Full suite green.

🤖 Generated with Claude Code

Two behavior-preserving cuts that the multicam director needs (PR1):

- MultipeerServiceDelegate.didReceiveMessage now carries the source peer.
  The 1:1 SessionCoordinator ignores it (its single link makes the source
  unambiguous); a multicam controller will route responses by it.
- sendMessage/sendOrGoToScanning accept an explicit peer list (nil = all
  connected, unchanged), and the monitor's frame ack now addresses only the
  camera whose frame was consumed — with several cameras, a broadcast ack
  would advance every camera's credit window on one camera's frame.

Single-cam behavior is identical (one connected peer makes both forms the
same). New test proves the ack targets only the sending peer with two peers
connected; full suite green.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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📊 Test Coverage Report

633/645 tests passed · ⏭️ 12 skipped

Metric Coverage
App code (excl. generated + vendored Theater) █████████░░░░░░░░░░░ 44.7% 🔴
Whole target █████████░░░░░░░░░░░ 45.9% 🔴

🎥 Capture & session core

File Coverage Lines
CaptureEngine.swift ██░░░░░░░░░░░░░░░░░░ 10.7% 164/1532 🔴
RecordingPipeline.swift ████████████░░░░░░░░ 59.7% 284/476 🟡
FrameStreamingCoordinator.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/124 🔴
FrameStreamer.swift ██████████████░░░░░░ 69.2% 72/104 🟡
RemoteCmdFlatBuffers.swift ███████████████████░ 96.2% 1202/1250 🟢
📁 Full report — 88 files
File Coverage Lines
CountdownTimer.swift ████████████████████ 100.0% 48/48 🟢
JPEGFrameEncoder.swift ████████████████████ 100.0% 12/12 🟢
CameraPreviewMode.swift ████████████████████ 100.0% 13/13 🟢
AppActivityMonitor.swift ████████████████████ 100.0% 31/31 🟢
AppTheme.swift ████████████████████ 100.0% 33/33 🟢
Messages.swift ████████████████████ 100.0% 7/7 🟢
DebugLog.swift ████████████████████ 100.0% 2/2 🟢
ZoomScale.swift ████████████████████ 100.0% 76/76 🟢
MonitorChrome.swift ████████████████████ 100.0% 56/56 🟢
MultipeerMessages.swift ████████████████████ 100.0% 12/12 🟢
StreamingConfig.swift ████████████████████ 100.0% 34/34 🟢
Locked.swift ████████████████████ 100.0% 19/19 🟢
ScannerLobby.swift ████████████████████ 100.0% 5/5 🟢
CaptureSyncMetadata.swift ████████████████████ 100.0% 32/32 🟢
FrameCreditWindow.swift ████████████████████ 100.0% 9/9 🟢
AppDelegate.swift ████████████████████ 100.0% 17/17 🟢
HEICFrameEncoder.swift ████████████████████ 100.0% 17/17 🟢
PeerCompatibility.swift ████████████████████ 100.0% 42/42 🟢
DeviceScannerViewModel.swift ████████████████████ 99.1% 112/113 🟢
FrameSender.swift ████████████████████ 98.4% 187/190 🟢
FocusPointMapping.swift ████████████████████ 97.6% 40/41 🟢
RemoteCmdFlatBuffers.swift ███████████████████░ 96.2% 1202/1250 🟢
RemoteCmds.swift ███████████████████░ 95.9% 302/315 🟢
WatchSharedTypes.swift ███████████████████░ 94.0% 236/251 🟢
WatchPreviewStreamer.swift ███████████████████░ 93.6% 44/47 🟢
VP9FrameEncoder.swift ███████████████████░ 92.7% 153/165 🟢
WelcomeView.swift ██████████████████░░ 89.3% 492/551 🟢
VideoTransferProgressView.swift █████████████████░░░ 84.0% 295/351 🟢
UIImage+gif.swift █████████████████░░░ 83.2% 129/155 🟢
UIAlertController.swift █████████████████░░░ 83.0% 44/53 🟢
CameraDeviceDescriptor.swift ████████████████░░░░ 81.0% 34/42 🟢
CameraProgressOverlayView.swift ████████████████░░░░ 78.5% 186/237 🟡
MonitorView.swift ███████████████░░░░░ 76.8% 1178/1534 🟡
FlatBufferSchemas_generated.swift (excluded from app-code metric) ███████████████░░░░░ 75.7% 747/987 🟡
RolePickerView.swift ███████████████░░░░░ 75.4% 306/406 🟡
RecordingTimer.swift ███████████████░░░░░ 73.5% 61/83 🟡
CameraRecordingTimerView.swift ███████████████░░░░░ 73.4% 127/173 🟡
WelcomeViewModel.swift ███████████████░░░░░ 73.3% 96/131 🟡
SettingsViewModel.swift ██████████████░░░░░░ 70.9% 90/127 🟡
DeviceScannerView.swift ██████████████░░░░░░ 70.3% 1132/1611 🟡
SessionCoordinator.swift ██████████████░░░░░░ 70.0% 1740/2487 🟡
FrameStreamer.swift ██████████████░░░░░░ 69.2% 72/104 🟡
MonitorPresenter.swift █████████████░░░░░░░ 65.3% 154/236 🟡
WelcomeViewController.swift █████████████░░░░░░░ 64.1% 41/64 🟡
UIAlertPresenter.swift ████████████░░░░░░░░ 60.5% 26/43 🟡
RecordingPipeline.swift ████████████░░░░░░░░ 59.7% 284/476 🟡
MediaProcessors.swift ████████████░░░░░░░░ 58.3% 7/12 🟡
StoreManager.swift ███████████░░░░░░░░░ 53.2% 75/141 🟡
UICmds.swift ██████████░░░░░░░░░░ 50.0% 96/192 🟡
CameraViewModel.swift ██████████░░░░░░░░░░ 49.6% 126/254 🔴
ZoomPill.swift ██████████░░░░░░░░░░ 49.4% 168/340 🔴
UIViewController+SwiftUIHosting.swift ██████████░░░░░░░░░░ 48.4% 15/31 🔴
FrameCodecs.swift ██████████░░░░░░░░░░ 48.1% 25/52 🔴
FrameStreamReceiver.swift █████████░░░░░░░░░░░ 46.3% 238/514 🔴
SceneDelegate.swift █████████░░░░░░░░░░░ 45.8% 11/24 🔴
MonitorViewModel.swift █████████░░░░░░░░░░░ 44.1% 186/422 🔴
PurchaseManaging.swift ████████░░░░░░░░░░░░ 42.0% 21/50 🔴
HEVCFrameEncoder.swift ████████░░░░░░░░░░░░ 40.1% 93/232 🔴
MonitorViewController.swift ███████░░░░░░░░░░░░░ 37.3% 84/225 🔴
EnumExtensions.swift ███████░░░░░░░░░░░░░ 33.9% 40/118 🔴
CameraScreenView.swift ██████░░░░░░░░░░░░░░ 28.5% 148/520 🔴
DeviceScannerViewController.swift ██████░░░░░░░░░░░░░░ 28.1% 107/381 🔴
WatchSessionManager.swift ████░░░░░░░░░░░░░░░░ 20.8% 37/178 🔴
SoundManager.swift ████░░░░░░░░░░░░░░░░ 20.0% 4/20 🔴
MonitorViewController+SwiftUI.swift ███░░░░░░░░░░░░░░░░░ 14.4% 67/465 🔴
CaptureEngine.swift ██░░░░░░░░░░░░░░░░░░ 10.7% 164/1532 🔴
SwiftConstants.swift ██░░░░░░░░░░░░░░░░░░ 10.3% 6/58 🔴
RolePickerController.swift ██░░░░░░░░░░░░░░░░░░ 10.2% 23/226 🔴
PeerLinkStatus.swift █░░░░░░░░░░░░░░░░░░░ 7.1% 10/141 🔴
WatchRemoteCameraController.swift █░░░░░░░░░░░░░░░░░░░ 3.2% 9/279 🔴
CameraPermissionsView.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/640 🔴
CameraHostController.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/197 🔴
RemoteShutterHelpView.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/1373 🔴
CameraPermissionErrorView.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/416 🔴
PhotosAccessDeniedView.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/606 🔴
FrameStreamingCoordinator.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/124 🔴
MicrophonePermissionPromptView.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/347 🔴
SettingsView.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/760 🔴
Photos.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/12 🔴
LocalNetworkPermissionView.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/747 🔴
OrientationUtils.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/18 🔴
PermissionManager.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/159 🔴
PhotosAccessHelper.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/324 🔴
CameraRig.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/574 🔴
StreamLog.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/1 🔴
MultipeerService.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/116 🔴
Data+MD5.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/4 🔴
CameraCountdownTorch.swift ░░░░░░░░░░░░░░░░░░░░ 0.0% 0/61 🔴

Generated from 244a70d · workflow run

@darioalessandro

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Consolidated into the single feature PR per Dario's request: #203 (branch kept, not deleted).

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