chore: drop gateway ipc remnants

apps/macos/Sources/Clawdis/DebugActions.swift

@@ -128,17 +128,17 @@ enum DebugActions {
         await HealthStore.shared.refresh(onDemand: true)
     }
 
-    static func sendTestHeartbeat() async -> Result<ControlHeartbeatEvent?, String> {
+    static func sendTestHeartbeat() async -> Result<ControlHeartbeatEvent?, Error> {
         do {
             _ = await AgentRPC.shared.setHeartbeatsEnabled(true)
-            try await ControlChannel.shared.configure()
+            await ControlChannel.shared.configure()
             let data = try await ControlChannel.shared.request(method: "last-heartbeat")
             if let evt = try? JSONDecoder().decode(ControlHeartbeatEvent.self, from: data) {
                 return .success(evt)
             }
             return .success(nil)
         } catch {
-            return .failure(error.localizedDescription)
+            return .failure(error)
         }
     }
 
@@ -149,7 +149,7 @@ enum DebugActions {
     static func toggleVerboseLoggingMain() async -> Bool {
         let newValue = !self.verboseLoggingEnabledMain
         UserDefaults.standard.set(newValue, forKey: self.verboseDefaultsKey)
-        try? await ControlChannel.shared.request(
+        _ = try? await ControlChannel.shared.request(
             method: "system-event",
             params: ["text": AnyHashable("verbose-main:\(newValue ? "on" : "off")")])
         return newValue

apps/macos/Sources/Clawdis/HealthStore.swift

@@ -4,11 +4,6 @@ import OSLog
 import SwiftUI
 
 struct HealthSnapshot: Codable, Sendable {
-    struct Ipc: Codable, Sendable {
-        let exists: Bool?
-        let path: String?
-    }
-
     struct Web: Codable, Sendable {
         struct Connect: Codable, Sendable {
             let ok: Bool
@@ -37,7 +32,6 @@ struct HealthSnapshot: Codable, Sendable {
     let ts: Double
     let durationMs: Double
     let web: Web
-    let ipc: Ipc?
     let heartbeatSeconds: Int?
     let sessions: Sessions
 }

apps/macos/Sources/Clawdis/InstancesStore.swift

@@ -261,7 +261,7 @@ final class InstancesStore: ObservableObject {
                 lastInputSeconds: nil,
                 mode: "health",
                 reason: "health probe",
-                text: "Health ok · linked=\(snap.web.linked) · ipc.exists=\(snap.ipc.exists)",
+                text: "Health ok · linked=\(snap.web.linked)",
                 ts: snap.ts)
             if !self.instances.contains(where: { $0.id == entry.id }) {
                 self.instances.insert(entry, at: 0)

apps/macos/Sources/Clawdis/WebChatWindow.swift

@@ -244,6 +244,10 @@ final class WebChatManager {
     static let shared = WebChatManager()
     private var controller: WebChatWindowController?
 
+    func preferredSessionKey() -> String {
+        WorkActivityStore.shared.current?.sessionKey ?? "main"
+    }
+
     func show(sessionKey: String) {
         if self.controller == nil {
             self.controller = WebChatWindowController(sessionKey: sessionKey)