fix(ui): scope agent memory to project context owner

packages/ui/src/components/layout/RightSidebarTabs.tsx

@@ -6,46 +6,26 @@ import { useProjectsStore } from '@/stores/useProjectsStore';
 import { useDirectoryStore } from '@/stores/useDirectoryStore';
 import { formatDirectoryName } from '@/lib/utils';
 import { useSessionUIStore } from '@/sync/session-ui-store';
-import { CHAT_DRAFT_PROJECT_ID, getChatsRootForHome, getChatsRootFromDirectory, isChatDirectoryPath } from '@/lib/chatDirectories';
+import { CHAT_DRAFT_PROJECT_ID } from '@/lib/chatDirectories';
 import { useI18n } from '@/lib/i18n';
+import { useProjectContextOwner } from '@/hooks/useProjectContextOwner';
 
 export const ProjectContextPanel: React.FC<{
   onActionComplete?: () => void;
   onOpenPlan?: (plan: { id: string; title: string }) => void;
 }> = ({ onActionComplete, onOpenPlan }) => {
-  const activeProjectId = useProjectsStore((state) => state.activeProjectId);
   const projects = useProjectsStore((state) => state.projects);
   const homeDirectory = useDirectoryStore((state) => state.homeDirectory);
   const { t } = useI18n();
   const gitDirectories = useGitStore((state) => state.directories);
-  const isChatContext = useSessionUIStore((state) => (
-    state.newSessionDraft.open
-      ? state.newSessionDraft.target === 'chat'
-      : isChatDirectoryPath(state.currentSessionDirectory)
-  ));
   const chatSessionDirectory = useSessionUIStore((state) => state.currentSessionDirectory);
-  const chatsRoot = getChatsRootFromDirectory(chatSessionDirectory) ?? getChatsRootForHome(homeDirectory);
+  const projectRef = useProjectContextOwner(chatSessionDirectory);
+  const isChatContext = projectRef?.id === CHAT_DRAFT_PROJECT_ID;
 
   const activeProject = React.useMemo(() => {
     if (isChatContext) return null;
-    if (activeProjectId) {
-      return projects.find((project) => project.id === activeProjectId) ?? projects[0] ?? null;
-    }
-    return projects[0] ?? null;
-  }, [activeProjectId, isChatContext, projects]);
-
-  const projectRef = React.useMemo(() => {
-    if (isChatContext && chatsRoot) {
-      return { id: CHAT_DRAFT_PROJECT_ID, path: chatsRoot };
-    }
-    if (!activeProject) {
-      return null;
-    }
-    return {
-      id: activeProject.id,
-      path: activeProject.path,
-    };
-  }, [activeProject, chatsRoot, isChatContext]);
+    return projects.find((project) => project.id === projectRef?.id) ?? null;
+  }, [isChatContext, projectRef?.id, projects]);
 
   const projectLabel = React.useMemo(() => {
     if (isChatContext) return t('sessions.sidebar.activity.chatsTitle');