diff --git a/apps/ios/Tests/BridgeDiscoveryModelTests.swift b/apps/ios/Tests/BridgeDiscoveryModelTests.swift
new file mode 100644
index 000000000..299422931
--- /dev/null
+++ b/apps/ios/Tests/BridgeDiscoveryModelTests.swift
@@ -0,0 +1,22 @@
+import Testing
+@testable import Clawdis
+
+@Suite(.serialized) struct BridgeDiscoveryModelTests {
+    @Test @MainActor func debugLoggingCapturesLifecycleAndResets() {
+        let model = BridgeDiscoveryModel()
+
+        #expect(model.debugLog.isEmpty)
+        #expect(model.statusText == "Idle")
+
+        model.setDebugLoggingEnabled(true)
+        #expect(model.debugLog.count >= 2)
+
+        model.stop()
+        #expect(model.statusText == "Stopped")
+        #expect(model.bridges.isEmpty)
+        #expect(model.debugLog.count >= 3)
+
+        model.setDebugLoggingEnabled(false)
+        #expect(model.debugLog.isEmpty)
+    }
+}
diff --git a/apps/ios/Tests/BridgeSettingsStoreTests.swift b/apps/ios/Tests/BridgeSettingsStoreTests.swift
new file mode 100644
index 000000000..f9e064e30
--- /dev/null
+++ b/apps/ios/Tests/BridgeSettingsStoreTests.swift
@@ -0,0 +1,127 @@
+import Foundation
+import Testing
+@testable import Clawdis
+
+private struct KeychainEntry: Hashable {
+    let service: String
+    let account: String
+}
+
+private let bridgeService = "com.steipete.clawdis.bridge"
+private let nodeService = "com.steipete.clawdis.node"
+private let instanceIdEntry = KeychainEntry(service: nodeService, account: "instanceId")
+private let preferredBridgeEntry = KeychainEntry(service: bridgeService, account: "preferredStableID")
+private let lastBridgeEntry = KeychainEntry(service: bridgeService, account: "lastDiscoveredStableID")
+
+private func snapshotDefaults(_ keys: [String]) -> [String: Any?] {
+    let defaults = UserDefaults.standard
+    var snapshot: [String: Any?] = [:]
+    for key in keys {
+        snapshot[key] = defaults.object(forKey: key)
+    }
+    return snapshot
+}
+
+private func applyDefaults(_ values: [String: Any?]) {
+    let defaults = UserDefaults.standard
+    for (key, value) in values {
+        if let value {
+            defaults.set(value, forKey: key)
+        } else {
+            defaults.removeObject(forKey: key)
+        }
+    }
+}
+
+private func restoreDefaults(_ snapshot: [String: Any?]) {
+    applyDefaults(snapshot)
+}
+
+private func snapshotKeychain(_ entries: [KeychainEntry]) -> [KeychainEntry: String?] {
+    var snapshot: [KeychainEntry: String?] = [:]
+    for entry in entries {
+        snapshot[entry] = KeychainStore.loadString(service: entry.service, account: entry.account)
+    }
+    return snapshot
+}
+
+private func applyKeychain(_ values: [KeychainEntry: String?]) {
+    for (entry, value) in values {
+        if let value {
+            _ = KeychainStore.saveString(value, service: entry.service, account: entry.account)
+        } else {
+            _ = KeychainStore.delete(service: entry.service, account: entry.account)
+        }
+    }
+}
+
+private func restoreKeychain(_ snapshot: [KeychainEntry: String?]) {
+    applyKeychain(snapshot)
+}
+
+@Suite(.serialized) struct BridgeSettingsStoreTests {
+    @Test func bootstrapCopiesDefaultsToKeychainWhenMissing() {
+        let defaultsKeys = [
+            "node.instanceId",
+            "bridge.preferredStableID",
+            "bridge.lastDiscoveredStableID",
+        ]
+        let entries = [instanceIdEntry, preferredBridgeEntry, lastBridgeEntry]
+        let defaultsSnapshot = snapshotDefaults(defaultsKeys)
+        let keychainSnapshot = snapshotKeychain(entries)
+        defer {
+            restoreDefaults(defaultsSnapshot)
+            restoreKeychain(keychainSnapshot)
+        }
+
+        applyDefaults([
+            "node.instanceId": "node-test",
+            "bridge.preferredStableID": "preferred-test",
+            "bridge.lastDiscoveredStableID": "last-test",
+        ])
+        applyKeychain([
+            instanceIdEntry: nil,
+            preferredBridgeEntry: nil,
+            lastBridgeEntry: nil,
+        ])
+
+        BridgeSettingsStore.bootstrapPersistence()
+
+        #expect(KeychainStore.loadString(service: nodeService, account: "instanceId") == "node-test")
+        #expect(KeychainStore.loadString(service: bridgeService, account: "preferredStableID") == "preferred-test")
+        #expect(KeychainStore.loadString(service: bridgeService, account: "lastDiscoveredStableID") == "last-test")
+    }
+
+    @Test func bootstrapCopiesKeychainToDefaultsWhenMissing() {
+        let defaultsKeys = [
+            "node.instanceId",
+            "bridge.preferredStableID",
+            "bridge.lastDiscoveredStableID",
+        ]
+        let entries = [instanceIdEntry, preferredBridgeEntry, lastBridgeEntry]
+        let defaultsSnapshot = snapshotDefaults(defaultsKeys)
+        let keychainSnapshot = snapshotKeychain(entries)
+        defer {
+            restoreDefaults(defaultsSnapshot)
+            restoreKeychain(keychainSnapshot)
+        }
+
+        applyDefaults([
+            "node.instanceId": nil,
+            "bridge.preferredStableID": nil,
+            "bridge.lastDiscoveredStableID": nil,
+        ])
+        applyKeychain([
+            instanceIdEntry: "node-from-keychain",
+            preferredBridgeEntry: "preferred-from-keychain",
+            lastBridgeEntry: "last-from-keychain",
+        ])
+
+        BridgeSettingsStore.bootstrapPersistence()
+
+        let defaults = UserDefaults.standard
+        #expect(defaults.string(forKey: "node.instanceId") == "node-from-keychain")
+        #expect(defaults.string(forKey: "bridge.preferredStableID") == "preferred-from-keychain")
+        #expect(defaults.string(forKey: "bridge.lastDiscoveredStableID") == "last-from-keychain")
+    }
+}