chat: tag OpenCode sessions with officer metadata (cwd) + filter lists by it

OpenCode has no per-session directory (every session runs in the fixed server's cwd),
so sessions from every context (/chat pwd, email account, project) all landed in one
list. Now each session is tagged on creation with its logical cwd via the free-form
session `metadata`: { officer: { cwd } } — API-settable, round-trips on list+detail,
never touched by opencode core (confirmed by source dive + live test).

- client.createSession(metadata?) sends `metadata`; adds OfficerSessionMeta + officerMeta() helper.
- send-opencode tags new sessions with { officer: { cwd } } (the resolved chat cwd).
- websocket: pass the full resolved cwd for every context (not just non-/chat).
- listOpenCodeSessions(cwd?) filters by metadata.officer.cwd; chat.ts passes the request cwd.

Verified live: sessions tagged with distinct cwds list only under their own cwd.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/servers/api/chat/chat.ts

@@ -40,7 +40,7 @@ chatRouter.get('/sessions', async (ctx) => {
   const email = ctx.get('user').email;
   const cwd = cwdOf(ctx, email);
   const claude = listClaudeSessions(email, cwd).map((s) => ({ ...s, harness: 'claude' as const }));
-  const opencode = await listOpenCodeSessions();
+  const opencode = await listOpenCodeSessions(cwd);
   const sessions = [...claude, ...opencode].sort((a, b) => b.updatedAt.localeCompare(a.updatedAt));
   return ctx.json({ sessions });
 });

src/servers/api/chat/opencode-sessions.ts

@@ -1,6 +1,6 @@
 import type { ClaudeSessionSummary, ClaudeSessionDetail, ClaudeChatMessage } from './claude-sessions';
 import { ensureServer } from './opencode/server-manager';
-import { getConnection } from './opencode/client';
+import { getConnection, officerMeta } from './opencode/client';
 import { logger } from './logger';
 
 // The OpenCode analog of claude-sessions.ts. OpenCode's own store is the source of truth, read via the
@@ -8,12 +8,18 @@ import { logger } from './logger';
 // one server's project, so listing is just GET /session. Returns the same shapes as the Claude reader,
 // tagged harness:'opencode', so chat.ts can merge both harnesses transparently.
 
-/** List OpenCode sessions. Never throws — returns [] if the server is unavailable. */
-export async function listOpenCodeSessions(): Promise<ClaudeSessionSummary[]> {
+/**
+ * List OpenCode sessions tagged with the given logical cwd (via `metadata.officer.cwd`), so each
+ * context (/chat pwd, email account, project) sees only its own. With no cwd, returns all. Never
+ * throws — returns [] if the server is unavailable.
+ */
+export async function listOpenCodeSessions(cwd?: string): Promise<ClaudeSessionSummary[]> {
   try {
     const { baseUrl } = await ensureServer();
     const sessions = await getConnection(baseUrl).listSessions();
-    return sessions.map((s) => {
+    return sessions
+      .filter((s) => !cwd || officerMeta(s.metadata).cwd === cwd)
+      .map((s) => {
         const created = s.time?.created ?? Date.now();
         const updated = s.time?.updated ?? created;
         return {

src/servers/api/chat/opencode/client.ts

@@ -105,11 +105,12 @@ class ServerConnection {
     return (await res.json()) as T;
   }
 
-  async createSession(directory?: string, title?: string): Promise<string> {
-    // `directory` binds the session's working dir (e.g. an email account dir). Omit it for the general
-    // /chat, so the session lives in the fixed server's own project (its cwd).
+  async createSession(metadata?: Record<string, unknown>, title?: string): Promise<string> {
+    // OpenCode has no per-session `directory` (a session inherits the server's cwd). We instead tag
+    // the session with our own free-form `metadata` (e.g. { officer: { cwd } }) — round-trips on the
+    // list + detail endpoints and is never touched by opencode core — to know where it belongs.
     const body: Record<string, unknown> = {};
-    if (directory) body.directory = directory;
+    if (metadata) body.metadata = metadata;
     if (title) body.title = title;
     const session = await this.postJson<{ id?: string }>('/session', body);
     if (!session.id) throw new Error('opencode POST /session returned no id');
@@ -162,8 +163,14 @@ export type OpenCodeSessionInfo = {
   title?: string;
   time?: { created?: number; updated?: number };
   location?: { directory?: string | null };
+  metadata?: Record<string, unknown>;
 };
 
+// Our own namespaced session metadata (stored under the free-form `metadata.officer` key).
+export type OfficerSessionMeta = { cwd?: string };
+export const officerMeta = (m?: Record<string, unknown>): OfficerSessionMeta =>
+  (m?.officer as OfficerSessionMeta) ?? {};
+
 export type OpenCodeStoredPart = {
   type?: string;
   text?: string;

src/servers/api/chat/websocket.ts

@@ -85,7 +85,8 @@ async function resolveChatCwd(
   userId: number,
 ): Promise<string> {
   if (msg.context === 'email') return resolveEmailCwd(userId, email, msg.contextId);
-  if (msg.context === 'chat') return msg.cwd?.trim() ? resolveCwd(email, role, msg.cwd) : ensureClaudeSessionsCwd(email);
+  if (msg.context === 'chat')
+    return msg.cwd?.trim() ? resolveCwd(email, role, msg.cwd) : ensureClaudeSessionsCwd(email);
   return resolveCwd(email, role, msg.cwd);
 }
 
@@ -424,10 +425,6 @@ async function handleOpenCodeChat(
 
   const cwd = await resolveChatCwd(msg, email, ws.data.role, userId);
 
-  // OpenCode's working directory: a context-scoped dir (email account, project, …) for OpenCode to
-  // operate in; the general /chat runs in the fixed server's default project (home), so pass none.
-  const openCodeDir = msg.context && msg.context !== 'chat' ? cwd : undefined;
-
   const groupSlug = msg.groupSlug || null;
 
   const session = sessionManager.getOrCreate(sessionId, email, cwd, model, groupSlug, msg.context, msg.contextId);
@@ -469,7 +466,7 @@ async function handleOpenCodeChat(
       username,
       prompt: effectivePrompt,
       sessionKey: sessionId,
-      cwd: openCodeDir,
+      cwd,
       model,
       role: ws.data.role,
       resumeSessionId: msg.resumeSessionId,

src/servers/channels/send-opencode.ts

@@ -45,7 +45,9 @@ export async function sendOpenCodeStreaming(params: OpenCodeStreamingParams): Pr
     (params.sessionKey.startsWith('ses_') ? params.sessionKey : undefined) ??
     params.resumeSessionId;
   if (!opencodeSessionId) {
-    opencodeSessionId = await conn.createSession(params.cwd);
+    // Tag the session with its logical cwd so it can be listed in the right place (OpenCode has no
+    // per-session directory — every session runs in the fixed server's cwd).
+    opencodeSessionId = await conn.createSession(params.cwd ? { officer: { cwd: params.cwd } } : undefined);
   }
   setOpenCodeSession(params.sessionKey, opencodeSessionId);
   const sessionId = opencodeSessionId;