[Feat] surface spawnedBy in chat and agent broadcast payloads (#63244)

Merged via squash.

Prepared head SHA: ff0fe5db38
Co-authored-by: samzong <13782141+samzong@users.noreply.github.com>
Co-authored-by: frankekn <4488090+frankekn@users.noreply.github.com>
Reviewed-by: @frankekn

apps/shared/OpenClawKit/Sources/OpenClawProtocol/GatewayModels.swift

@@ -385,6 +385,7 @@ public struct AgentEvent: Codable, Sendable {
     public let seq: Int
     public let stream: String
     public let ts: Int
+    public let spawnedby: String?
     public let data: [String: AnyCodable]
 
     public init(
@@ -392,12 +393,14 @@ public struct AgentEvent: Codable, Sendable {
         seq: Int,
         stream: String,
         ts: Int,
+        spawnedby: String?,
         data: [String: AnyCodable])
     {
         self.runid = runid
         self.seq = seq
         self.stream = stream
         self.ts = ts
+        self.spawnedby = spawnedby
         self.data = data
     }
 
@@ -406,6 +409,7 @@ public struct AgentEvent: Codable, Sendable {
         case seq
         case stream
         case ts
+        case spawnedby = "spawnedBy"
         case data
     }
 }
@@ -4753,6 +4757,7 @@ public struct ChatInjectParams: Codable, Sendable {
 public struct ChatEvent: Codable, Sendable {
     public let runid: String
     public let sessionkey: String
+    public let spawnedby: String?
     public let seq: Int
     public let state: AnyCodable
     public let message: AnyCodable?
@@ -4764,6 +4769,7 @@ public struct ChatEvent: Codable, Sendable {
     public init(
         runid: String,
         sessionkey: String,
+        spawnedby: String?,
         seq: Int,
         state: AnyCodable,
         message: AnyCodable?,
@@ -4774,6 +4780,7 @@ public struct ChatEvent: Codable, Sendable {
     {
         self.runid = runid
         self.sessionkey = sessionkey
+        self.spawnedby = spawnedby
         self.seq = seq
         self.state = state
         self.message = message
@@ -4786,6 +4793,7 @@ public struct ChatEvent: Codable, Sendable {
     private enum CodingKeys: String, CodingKey {
         case runid = "runId"
         case sessionkey = "sessionKey"
+        case spawnedby = "spawnedBy"
         case seq
         case state
         case message