test(ios): add bridge session + keychain suites

apps/ios/Tests/BridgeSessionTests.swift

@@ -0,0 +1,48 @@
+import Foundation
+import Testing
+@testable import Clawdis
+
+@Suite struct BridgeSessionTests {
+    @Test func initialStateIsIdle() async {
+        let session = BridgeSession()
+        #expect(await session.state == .idle)
+    }
+
+    @Test func requestFailsWhenNotConnected() async {
+        let session = BridgeSession()
+
+        do {
+            _ = try await session.request(method: "health", paramsJSON: nil, timeoutSeconds: 1)
+            Issue.record("Expected request to throw when not connected")
+        } catch let error as NSError {
+            #expect(error.domain == "Bridge")
+            #expect(error.code == 11)
+        }
+    }
+
+    @Test func sendEventFailsWhenNotConnected() async {
+        let session = BridgeSession()
+
+        do {
+            try await session.sendEvent(event: "tick", payloadJSON: nil)
+            Issue.record("Expected sendEvent to throw when not connected")
+        } catch let error as NSError {
+            #expect(error.domain == "Bridge")
+            #expect(error.code == 10)
+        }
+    }
+
+    @Test func disconnectFinishesServerEventStreams() async throws {
+        let session = BridgeSession()
+        let stream = await session.subscribeServerEvents(bufferingNewest: 1)
+
+        let consumer = Task { @Sendable in
+            for await _ in stream {}
+        }
+
+        await session.disconnect()
+
+        _ = await consumer.result
+        #expect(await session.state == .idle)
+    }
+}