fix: preserve reset channel identity

Author: Takhoffman

src/gateway/server.sessions.gateway-server-sessions-a.test.ts

@@ -1011,6 +1011,12 @@ describe("gateway server sessions", () => {
         "subagent:child": {
           sessionId: "sess-owned-child",
           updatedAt: Date.now(),
+          chatType: "group",
+          channel: "discord",
+          groupId: "group-1",
+          subject: "Ops Thread",
+          groupChannel: "dev",
+          space: "hq",
           spawnedBy: "agent:main:main",
           spawnedWorkspaceDir: "/tmp/child-workspace",
           parentSessionKey: "agent:main:main",
@@ -1053,6 +1059,12 @@ describe("gateway server sessions", () => {
       ok: true;
       key: string;
       entry: {
+        chatType?: string;
+        channel?: string;
+        groupId?: string;
+        subject?: string;
+        groupChannel?: string;
+        space?: string;
         spawnedBy?: string;
         spawnedWorkspaceDir?: string;
         parentSessionKey?: string;
@@ -1090,6 +1102,12 @@ describe("gateway server sessions", () => {
     }>(ws, "sessions.reset", { key: "subagent:child" });
 
     expect(reset.ok).toBe(true);
+    expect(reset.payload?.entry.chatType).toBe("group");
+    expect(reset.payload?.entry.channel).toBe("discord");
+    expect(reset.payload?.entry.groupId).toBe("group-1");
+    expect(reset.payload?.entry.subject).toBe("Ops Thread");
+    expect(reset.payload?.entry.groupChannel).toBe("dev");
+    expect(reset.payload?.entry.space).toBe("hq");
     expect(reset.payload?.entry.spawnedBy).toBe("agent:main:main");
     expect(reset.payload?.entry.spawnedWorkspaceDir).toBe("/tmp/child-workspace");
     expect(reset.payload?.entry.parentSessionKey).toBe("agent:main:main");
@@ -1127,6 +1145,12 @@ describe("gateway server sessions", () => {
     const store = JSON.parse(await fs.readFile(storePath, "utf-8")) as Record<
       string,
       {
+        chatType?: string;
+        channel?: string;
+        groupId?: string;
+        subject?: string;
+        groupChannel?: string;
+        space?: string;
         spawnedBy?: string;
         spawnedWorkspaceDir?: string;
         parentSessionKey?: string;
@@ -1162,6 +1186,12 @@ describe("gateway server sessions", () => {
         label?: string;
       }
     >;
+    expect(store["agent:main:subagent:child"]?.chatType).toBe("group");
+    expect(store["agent:main:subagent:child"]?.channel).toBe("discord");
+    expect(store["agent:main:subagent:child"]?.groupId).toBe("group-1");
+    expect(store["agent:main:subagent:child"]?.subject).toBe("Ops Thread");
+    expect(store["agent:main:subagent:child"]?.groupChannel).toBe("dev");
+    expect(store["agent:main:subagent:child"]?.space).toBe("hq");
     expect(store["agent:main:subagent:child"]?.spawnedBy).toBe("agent:main:main");
     expect(store["agent:main:subagent:child"]?.spawnedWorkspaceDir).toBe("/tmp/child-workspace");
     expect(store["agent:main:subagent:child"]?.parentSessionKey).toBe("agent:main:main");

src/gateway/session-reset-service.ts

@@ -329,6 +329,7 @@ export async function performGatewaySessionReset(params: {
       authProfileOverrideCompactionCount: currentEntry?.authProfileOverrideCompactionCount,
       groupActivation: currentEntry?.groupActivation,
       groupActivationNeedsSystemIntro: currentEntry?.groupActivationNeedsSystemIntro,
+      chatType: currentEntry?.chatType,
       model: resolvedModel.model,
       modelProvider: resolvedModel.provider,
       contextTokens: resetEntry?.contextTokens,
@@ -346,6 +347,11 @@ export async function performGatewaySessionReset(params: {
       subagentControlScope: currentEntry?.subagentControlScope,
       label: currentEntry?.label,
       displayName: currentEntry?.displayName,
+      channel: currentEntry?.channel,
+      groupId: currentEntry?.groupId,
+      subject: currentEntry?.subject,
+      groupChannel: currentEntry?.groupChannel,
+      space: currentEntry?.space,
       origin: snapshotSessionOrigin(currentEntry),
       deliveryContext: currentEntry?.deliveryContext,
       lastChannel: currentEntry?.lastChannel,