refactor(gateway): share request encoding

apps/shared/ClawdbotKit/Sources/ClawdbotKit/GatewayChannel.swift

@@ -574,46 +574,22 @@ public actor GatewayChannelActor {
         params: [String: AnyCodable]?,
         timeoutMs: Double? = nil) async throws -> Data
     {
-        do {
-            try await self.connect()
-        } catch {
-            throw self.wrap(error, context: "gateway connect")
-        }
-        let id = UUID().uuidString
+        try await self.connectOrThrow(context: "gateway connect")
         let effectiveTimeout = timeoutMs ?? self.defaultRequestTimeoutMs
-        // Encode request using the generated models to avoid JSONSerialization/ObjC bridging pitfalls.
-        let paramsObject: ProtoAnyCodable? = params.map { entries in
-            let dict = entries.reduce(into: [String: ProtoAnyCodable]()) { dict, entry in
-                dict[entry.key] = ProtoAnyCodable(entry.value.value)
-            }
-            return ProtoAnyCodable(dict)
-        }
-        let frame = RequestFrame(
-            type: "req",
-            id: id,
-            method: method,
-            params: paramsObject)
-        let data: Data
-        do {
-            data = try self.encoder.encode(frame)
-        } catch {
-            self.logger.error(
-                "gateway request encode failed \(method, privacy: .public) error=\(error.localizedDescription, privacy: .public)")
-            throw error
-        }
+        let payload = try self.encodeRequest(method: method, params: params, kind: "request")
         let response = try await withCheckedThrowingContinuation { (cont: CheckedContinuation<GatewayFrame, Error>) in
-            self.pending[id] = cont
+            self.pending[payload.id] = cont
             Task { [weak self] in
                 guard let self else { return }
                 try? await Task.sleep(nanoseconds: UInt64(effectiveTimeout * 1_000_000))
-                await self.timeoutRequest(id: id, timeoutMs: effectiveTimeout)
+                await self.timeoutRequest(id: payload.id, timeoutMs: effectiveTimeout)
             }
             Task {
                 do {
-                    try await self.task?.send(.data(data))
+                    try await self.task?.send(.data(payload.data))
                 } catch {
                     let wrapped = self.wrap(error, context: "gateway send \(method)")
-                    let waiter = self.pending.removeValue(forKey: id)
+                    let waiter = self.pending.removeValue(forKey: payload.id)
                     // Treat send failures as a broken socket: mark disconnected and trigger reconnect.
                     self.connected = false
                     self.task?.cancel(with: .goingAway, reason: nil)
@@ -644,31 +620,8 @@ public actor GatewayChannelActor {
     }
 
     public func send(method: String, params: [String: AnyCodable]?) async throws {
-        do {
-            try await self.connect()
-        } catch {
-            throw self.wrap(error, context: "gateway connect")
-        }
-        let id = UUID().uuidString
-        let paramsObject: ProtoAnyCodable? = params.map { entries in
-            let dict = entries.reduce(into: [String: ProtoAnyCodable]()) { dict, entry in
-                dict[entry.key] = ProtoAnyCodable(entry.value.value)
-            }
-            return ProtoAnyCodable(dict)
-        }
-        let frame = RequestFrame(
-            type: "req",
-            id: id,
-            method: method,
-            params: paramsObject)
-        let data: Data
-        do {
-            data = try self.encoder.encode(frame)
-        } catch {
-            self.logger.error(
-                "gateway send encode failed \(method, privacy: .public) error=\(error.localizedDescription, privacy: .public)")
-            throw error
-        }
+        try await self.connectOrThrow(context: "gateway connect")
+        let payload = try self.encodeRequest(method: method, params: params, kind: "send")
         guard let task = self.task else {
             throw NSError(
                 domain: "Gateway",
@@ -676,7 +629,7 @@ public actor GatewayChannelActor {
                 userInfo: [NSLocalizedDescriptionKey: "gateway socket unavailable"])
         }
         do {
-            try await task.send(.data(data))
+            try await task.send(.data(payload.data))
         } catch {
             let wrapped = self.wrap(error, context: "gateway send \(method)")
             self.connected = false
@@ -703,6 +656,42 @@ public actor GatewayChannelActor {
         return NSError(domain: ns.domain, code: ns.code, userInfo: [NSLocalizedDescriptionKey: "\(context): \(desc)"])
     }
 
+    private func connectOrThrow(context: String) async throws {
+        do {
+            try await self.connect()
+        } catch {
+            throw self.wrap(error, context: context)
+        }
+    }
+
+    private func encodeRequest(
+        method: String,
+        params: [String: AnyCodable]?,
+        kind: String) throws -> (id: String, data: Data)
+    {
+        let id = UUID().uuidString
+        // Encode request using the generated models to avoid JSONSerialization/ObjC bridging pitfalls.
+        let paramsObject: ProtoAnyCodable? = params.map { entries in
+            let dict = entries.reduce(into: [String: ProtoAnyCodable]()) { dict, entry in
+                dict[entry.key] = ProtoAnyCodable(entry.value.value)
+            }
+            return ProtoAnyCodable(dict)
+        }
+        let frame = RequestFrame(
+            type: "req",
+            id: id,
+            method: method,
+            params: paramsObject)
+        do {
+            let data = try self.encoder.encode(frame)
+            return (id: id, data: data)
+        } catch {
+            self.logger.error(
+                "gateway \(kind) encode failed \(method, privacy: .public) error=\(error.localizedDescription, privacy: .public)")
+            throw error
+        }
+    }
+
     private func failPending(_ error: Error) async {
         let waiters = self.pending
         self.pending.removeAll()