feat: add TLS for node bridge

apps/ios/Sources/Bridge/BridgeConnectionController.swift

@@ -10,6 +10,7 @@ protocol BridgePairingClient: Sendable {
     func pairAndHello(
         endpoint: NWEndpoint,
         hello: BridgeHello,
+        tls: BridgeTLSParams?,
         onStatus: (@Sendable (String) -> Void)?) async throws -> String
 }
 
@@ -115,9 +116,12 @@ final class BridgeConnectionController {
 
             self.didAutoConnect = true
             let endpoint = NWEndpoint.hostPort(host: NWEndpoint.Host(manualHost), port: port)
+            let stableID = BridgeEndpointID.stableID(endpoint)
+            let tlsParams = self.resolveManualTLSParams(stableID: stableID)
             self.startAutoConnect(
                 endpoint: endpoint,
-                bridgeStableID: BridgeEndpointID.stableID(endpoint),
+                bridgeStableID: stableID,
+                tls: tlsParams,
                 token: token,
                 instanceId: instanceId)
             return
@@ -135,10 +139,12 @@ final class BridgeConnectionController {
 
         guard let target = self.bridges.first(where: { $0.stableID == targetStableID }) else { return }
 
+        let tlsParams = self.resolveDiscoveredTLSParams(bridge: target)
         self.didAutoConnect = true
         self.startAutoConnect(
             endpoint: target.endpoint,
             bridgeStableID: target.stableID,
+            tls: tlsParams,
             token: token,
             instanceId: instanceId)
     }
@@ -182,6 +188,7 @@ final class BridgeConnectionController {
     private func startAutoConnect(
         endpoint: NWEndpoint,
         bridgeStableID: String,
+        tls: BridgeTLSParams?,
         token: String,
         instanceId: String)
     {
@@ -193,6 +200,7 @@ final class BridgeConnectionController {
                 let refreshed = try await self.bridgeClientFactory().pairAndHello(
                     endpoint: endpoint,
                     hello: hello,
+                    tls: tls,
                     onStatus: { status in
                         Task { @MainActor in
                             appModel.bridgeStatusText = status
@@ -208,6 +216,7 @@ final class BridgeConnectionController {
                 appModel.connectToBridge(
                     endpoint: endpoint,
                     bridgeStableID: bridgeStableID,
+                    tls: tls,
                     hello: self.makeHello(token: resolvedToken))
             } catch {
                 await MainActor.run {
@@ -217,6 +226,47 @@ final class BridgeConnectionController {
         }
     }
 
+    private func resolveDiscoveredTLSParams(
+        bridge: BridgeDiscoveryModel.DiscoveredBridge) -> BridgeTLSParams?
+    {
+        let stableID = bridge.stableID
+        let stored = BridgeTLSStore.loadFingerprint(stableID: stableID)
+
+        if bridge.tlsEnabled || bridge.tlsFingerprintSha256 != nil {
+            return BridgeTLSParams(
+                required: true,
+                expectedFingerprint: bridge.tlsFingerprintSha256 ?? stored,
+                allowTOFU: stored == nil,
+                storeKey: stableID)
+        }
+
+        if let stored {
+            return BridgeTLSParams(
+                required: true,
+                expectedFingerprint: stored,
+                allowTOFU: false,
+                storeKey: stableID)
+        }
+
+        return nil
+    }
+
+    private func resolveManualTLSParams(stableID: String) -> BridgeTLSParams? {
+        if let stored = BridgeTLSStore.loadFingerprint(stableID: stableID) {
+            return BridgeTLSParams(
+                required: true,
+                expectedFingerprint: stored,
+                allowTOFU: false,
+                storeKey: stableID)
+        }
+
+        return BridgeTLSParams(
+            required: false,
+            expectedFingerprint: nil,
+            allowTOFU: true,
+            storeKey: stableID)
+    }
+
     private func resolvedDisplayName(defaults: UserDefaults) -> String {
         let key = "node.displayName"
         let existing = defaults.string(forKey: key)?.trimmingCharacters(in: .whitespacesAndNewlines) ?? ""