feat: associate threads with projects (#8745)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/goose2/src/shared/api/acp.ts

@@ -1,5 +1,6 @@
 import type { ContentBlock } from "@agentclientprotocol/sdk";
 import * as directAcp from "./acpApi";
+import type { AcpSessionInfo } from "./acpApi";
 import * as sessionTracker from "./acpSessionTracker";
 import {
   getCatalogEntry,
@@ -27,6 +28,7 @@ export interface AcpSendMessageOptions {
 
 export interface AcpPrepareSessionOptions {
   personaId?: string;
+  projectId?: string;
 }
 
 export interface AcpCreateSessionOptions extends AcpPrepareSessionOptions {
@@ -116,6 +118,7 @@ export async function acpPrepareSession(
     providerId,
     workingDir,
     options.personaId,
+    options.projectId,
   );
   perfLog(
     `[perf:prepare] ${sid} acpPrepareSession done in ${(performance.now() - t0).toFixed(1)}ms`,
@@ -155,13 +158,7 @@ export async function acpSetModel(
   return directAcp.setModel(gooseSessionId ?? sessionId, modelId);
 }
 
-/** Session info returned by the goose binary's list_sessions. */
-export interface AcpSessionInfo {
-  sessionId: string;
-  title: string | null;
-  updatedAt: string | null;
-  messageCount: number;
-}
+export type { AcpSessionInfo };
 
 export interface AcpSessionSearchResult {
   sessionId: string;

ui/goose2/src/shared/api/acpApi.ts

@@ -18,6 +18,7 @@ export interface AcpSessionInfo {
   title: string | null;
   updatedAt: string | null;
   messageCount: number;
+  projectId?: string | null;
 }
 
 const DEPRECATED_PROVIDER_IDS = new Set(["claude-code", "codex", "gemini-cli"]);
@@ -50,6 +51,7 @@ export async function listSessions(): Promise<AcpSessionInfo[]> {
     title: info.title ?? null,
     updatedAt: info.updatedAt ?? null,
     messageCount: (info._meta?.messageCount as number) ?? 0,
+    projectId: (info._meta?.projectId as string) ?? null,
   }));
 }
 
@@ -124,6 +126,17 @@ export async function updateWorkingDir(
   await client.extMethod("goose/working_dir/update", { sessionId, workingDir });
 }
 
+export async function updateSessionProject(
+  sessionId: string,
+  projectId: string | null,
+): Promise<void> {
+  const client = await getClient();
+  await client.extMethod("_goose/session/update_project", {
+    sessionId,
+    projectId,
+  });
+}
+
 export async function cancelSession(sessionId: string): Promise<void> {
   const client = await getClient();
   await client.cancel({ sessionId });
@@ -132,6 +145,7 @@ export async function cancelSession(sessionId: string): Promise<void> {
 export async function newSession(
   workingDir: string,
   providerId?: string,
+  projectId?: string,
 ): Promise<NewSessionResponse> {
   const tClient = performance.now();
   const client = await getClient();
@@ -142,9 +156,10 @@ export async function newSession(
     mcpServers: [],
   };
 
-  if (providerId) {
-    request.meta = { provider: providerId };
-  }
+  const meta: Record<string, string> = {};
+  if (providerId) meta.provider = providerId;
+  if (projectId) meta.projectId = projectId;
+  if (Object.keys(meta).length > 0) request.meta = meta;
 
   const tCall = performance.now();
   const response = await client.newSession(request);

ui/goose2/src/shared/api/acpSessionTracker.ts

@@ -56,6 +56,7 @@ export async function prepareSession(
   providerId: string,
   workingDir: string,
   personaId?: string,
+  projectId?: string,
 ): Promise<string> {
   const sid = sessionId.slice(0, 8);
   const key = makeKey(sessionId, personaId);
@@ -101,7 +102,7 @@ export async function prepareSession(
 
   if (!gooseSessionId) {
     const tNew = performance.now();
-    const response = await acpApi.newSession(workingDir, providerId);
+    const response = await acpApi.newSession(workingDir, providerId, projectId);
     gooseSessionId = response.sessionId;
     perfLog(
       `[perf:prepare] ${sid} tracker newSession done in ${(performance.now() - tNew).toFixed(1)}ms (goose_sid=${gooseSessionId.slice(0, 8)})`,