Native video Increment 2a: publish local camera + self-view

Wire the camera button on native calls to the plugin instead of a
"not available" toast. New NativeCall.setCamera({on}) calls LiveKit
localParticipant.setCamera(enabled:) so the iOS user's camera is
published to the room — every web/desktop peer renders it via their
existing SFU subscription. Locally the plugin shows a small rounded
self-view (VideoView) pinned top-right over the WebView.

APIs verified against client-sdk-swift 2.15.3 source: setCamera ->
LocalTrackPublication?, TrackPublication.track, VideoView(.track/.layoutMode),
CameraCaptureOptions(position:.front). Front camera only for now.

Rendering the OTHER participants as native tiles synced to the web
meeting grid is Increment 2b (the fragile part) — next build. Until the
new IPA ships, the web branch falls back to an "update the app" toast.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

mobile/plugins/native-call/ios/Sources/NativeCallPlugin/NativeCallPlugin.swift

@@ -26,6 +26,7 @@ public class NativeCallPlugin: CAPPlugin, CAPBridgedPlugin, PKPushRegistryDelega
         CAPPluginMethod(name: "reportOutgoingCall", returnType: CAPPluginReturnPromise),
         CAPPluginMethod(name: "reportIncomingCall", returnType: CAPPluginReturnPromise),
         CAPPluginMethod(name: "setMuted", returnType: CAPPluginReturnPromise),
+        CAPPluginMethod(name: "setCamera", returnType: CAPPluginReturnPromise),
         CAPPluginMethod(name: "endCall", returnType: CAPPluginReturnPromise)
     ]
 
@@ -39,6 +40,11 @@ public class NativeCallPlugin: CAPPlugin, CAPBridgedPlugin, PKPushRegistryDelega
     private var endedCalls = Set<UUID>()
     private var room: Room?
     private var activeUUID: UUID?
+    // Native video (Increment 2a): the local camera is published to the room (so everyone else sees this
+    // user) and mirrored into a small self-view (PiP) drawn over the WebView. Rendering the OTHER
+    // participants as native tiles synced to the web meeting grid is Increment 2b. VideoView is a UIKit
+    // view — only ever touched on the main thread (helpers below dispatch there).
+    private var localVideoView: VideoView?
 
     override public func load() {
         let config = CXProviderConfiguration(localizedName: "Biz Connect")
@@ -91,6 +97,41 @@ public class NativeCallPlugin: CAPPlugin, CAPBridgedPlugin, PKPushRegistryDelega
         let r = room
         room = nil
         Task { await r?.disconnect() }
+        hideSelfView()
+    }
+
+    // MARK: - Native video (local self-view)
+
+    // Show the local camera as a small rounded self-view pinned to the top-right safe area, above the WebView.
+    // Increment 2b will render the REMOTE participants as native views synced to the web meeting tiles.
+    private func showSelfView(track: VideoTrack?) {
+        DispatchQueue.main.async { [weak self] in
+            guard let self = self, let track = track, let host = self.bridge?.viewController?.view else { return }
+            let vv = self.localVideoView ?? VideoView()
+            vv.layoutMode = .fill            // fill the PiP box (crop) instead of letterboxing
+            vv.track = track
+            if vv.superview == nil {
+                vv.backgroundColor = .black
+                vv.clipsToBounds = true
+                vv.layer.cornerRadius = 10
+                vv.translatesAutoresizingMaskIntoConstraints = false
+                host.addSubview(vv)
+                NSLayoutConstraint.activate([
+                    vv.widthAnchor.constraint(equalToConstant: 96),
+                    vv.heightAnchor.constraint(equalToConstant: 132),
+                    vv.topAnchor.constraint(equalTo: host.safeAreaLayoutGuide.topAnchor, constant: 16),
+                    vv.trailingAnchor.constraint(equalTo: host.safeAreaLayoutGuide.trailingAnchor, constant: -12),
+                ])
+            }
+            self.localVideoView = vv
+        }
+    }
+
+    private func hideSelfView() {
+        DispatchQueue.main.async { [weak self] in
+            self?.localVideoView?.removeFromSuperview()
+            self?.localVideoView = nil
+        }
     }
 
     // Route call audio to the LOUDSPEAKER when we'd otherwise be on the quiet earpiece. Guarded so a connected
@@ -171,6 +212,26 @@ public class NativeCallPlugin: CAPPlugin, CAPBridgedPlugin, PKPushRegistryDelega
         call.resolve()
     }
 
+    // Native video (Increment 2a): enable/disable the local camera. Publishing it makes this user's video
+    // appear for everyone else (their web/desktop clients render it via their own SFU subscription); locally
+    // we mirror it into a small self-view. Seeing the OTHER participants' video (native tiles) is Increment 2b.
+    // Front camera only for now.
+    @objc func setCamera(_ call: CAPPluginCall) {
+        guard let r = room else { call.reject("no active call"); return }
+        let on = call.getBool("on") ?? false
+        Task { [weak self] in
+            do {
+                let pub = try await r.localParticipant.setCamera(
+                    enabled: on,
+                    captureOptions: CameraCaptureOptions(position: .front))
+                if on { self?.showSelfView(track: pub?.track as? VideoTrack) } else { self?.hideSelfView() }
+                call.resolve(["on": on])
+            } catch {
+                call.reject("camera failed: \(String(describing: error))")
+            }
+        }
+    }
+
     // End the CallKit call (remote hung up / user ended from the web UI). No callUUID -> end all.
     @objc func endCall(_ call: CAPPluginCall) {
         if let uuidStr = call.getString("callUUID"), let uuid = UUID(uuidString: uuidStr) {