fix(chat): resolve parent project for worktree-session messages

Save-as-plan and Add-to-notes actions were disabled on messages whose session
ran in a worktree, because session.directory alone does not reflect the
worktree attachment — the authoritative cwd lives in session-worktree-store.

Use useEffectiveDirectory (attachment cwd > worktree metadata > session.directory)
and resolve the parent project via the worktree map the sidebar already builds,
extracted into lib/projectResolution so session-ui-store and chat actions share
one resolver. No extra git calls.

packages/ui/src/components/chat/message/MessageBody.tsx

@@ -38,6 +38,8 @@ import { StaticToolRow } from './parts/ProgressiveGroup';
 import { isExpandableTool, isStandaloneTool } from './parts/toolRenderUtils';
 import TurnActivity from '../components/TurnActivity';
 import { createProjectPlanFile } from '@/lib/openchamberConfig';
+import { resolveProjectForSessionDirectory } from '@/lib/projectResolution';
+import { useEffectiveDirectory } from '@/hooks/useEffectiveDirectory';
 import { useSessions } from '@/sync/sync-context';
 
 type SubtaskPartLike = Part & {
@@ -79,38 +81,6 @@ const normalizeSubtaskModel = (model: SubtaskPartLike['model']): string | null =
     return `${providerID}/${modelID}`;
 };
 
-const normalizePath = (value: string): string => value.replace(/\\/g, '/').replace(/\/+$/g, '') || value;
-
-const resolveProjectRefForDirectory = (
-    directory: string,
-    projects: Array<{ id: string; path: string }>,
-    activeProjectId: string | null,
-): { id: string; path: string } | null => {
-    const normalized = normalizePath(directory.trim());
-    if (!normalized) {
-        return null;
-    }
-
-    const activeProject = activeProjectId
-        ? projects.find((project) => project.id === activeProjectId) ?? null
-        : null;
-
-    if (activeProject?.path) {
-        const activePath = normalizePath(activeProject.path);
-        if (normalized === activePath || normalized.startsWith(`${activePath}/`)) {
-            return { id: activeProject.id, path: activeProject.path };
-        }
-    }
-
-    const match = projects
-        .filter((project) => {
-            const projectPath = normalizePath(project.path);
-            return normalized === projectPath || normalized.startsWith(`${projectPath}/`);
-        })
-        .sort((left, right) => normalizePath(right.path).length - normalizePath(left.path).length)[0];
-
-    return match ? { id: match.id, path: match.path } : null;
-};
 
 const UserSubtaskPart: React.FC<{ part: SubtaskPartLike }> = ({ part }) => {
     const [expanded, setExpanded] = React.useState(false);
@@ -741,7 +711,7 @@ const AssistantMessageBody: React.FC<Omit<MessageBodyProps, 'isUser'>> = ({
     const currentSessionId = useSessionUIStore((state) => state.currentSessionId);
     const openMultiRunLauncherWithPrompt = useUIStore((state) => state.openMultiRunLauncherWithPrompt);
     const projects = useProjectsStore((state) => state.projects);
-    const activeProjectId = useProjectsStore((state) => state.activeProjectId);
+    const effectiveDirectory = useEffectiveDirectory();
     const sessions = useSessions();
     const [isPlanDialogOpen, setIsPlanDialogOpen] = React.useState(false);
     const [isSavingPlan, setIsSavingPlan] = React.useState(false);
@@ -771,10 +741,13 @@ const AssistantMessageBody: React.FC<Omit<MessageBodyProps, 'isUser'>> = ({
         return sessions.find((session) => session.id === currentSessionId) ?? null;
     }, [currentSessionId, sessions]);
 
+    const availableWorktreesByProject = useSessionUIStore((state) => state.availableWorktreesByProject);
     const currentProjectRef = React.useMemo(() => {
-        const directory = typeof currentSession?.directory === 'string' ? currentSession.directory : '';
-        return resolveProjectRefForDirectory(directory, projects, activeProjectId);
-    }, [activeProjectId, currentSession?.directory, projects]);
+        const directory = effectiveDirectory
+            ?? (typeof currentSession?.directory === 'string' ? currentSession.directory : '');
+        const resolved = resolveProjectForSessionDirectory(projects, availableWorktreesByProject, directory);
+        return resolved ? { id: resolved.id, path: resolved.path } : null;
+    }, [availableWorktreesByProject, currentSession?.directory, effectiveDirectory, projects]);
 
 
     const hasTools = toolParts.length > 0;

packages/ui/src/components/chat/message/TextSelectionMenu.tsx

@@ -10,6 +10,8 @@ import { cn } from '@/lib/utils';
 import { copyTextToClipboard } from '@/lib/clipboard';
 import { toast } from '@/components/ui';
 import { getProjectNotesAndTodos, saveProjectNotesAndTodos } from '@/lib/openchamberConfig';
+import { resolveProjectForSessionDirectory } from '@/lib/projectResolution';
+import { useEffectiveDirectory } from '@/hooks/useEffectiveDirectory';
 import { summarizeText } from '@/lib/voice/summarize';
 import { isVSCodeRuntime } from '@/lib/desktop';
 
@@ -29,41 +31,6 @@ interface SelectionPayload {
   rect: DOMRect;
 }
 
-const normalizeProjectPath = (value: string): string => {
-  const replaced = value.replace(/\\/g, '/').replace(/\/+$/g, '');
-  return replaced || value;
-};
-
-const resolveProjectRefForDirectory = (
-  directory: string,
-  projects: Array<{ id: string; path: string }>,
-  activeProjectId: string | null,
-): { id: string; path: string } | null => {
-  const normalized = normalizeProjectPath(directory.trim());
-  if (!normalized) {
-    return null;
-  }
-
-  const activeProject = activeProjectId
-    ? projects.find((project) => project.id === activeProjectId) ?? null
-    : null;
-
-  if (activeProject?.path) {
-    const activePath = normalizeProjectPath(activeProject.path);
-    if (normalized === activePath || normalized.startsWith(`${activePath}/`)) {
-      return { id: activeProject.id, path: activeProject.path };
-    }
-  }
-
-  const match = projects
-    .filter((project) => {
-      const projectPath = normalizeProjectPath(project.path);
-      return normalized === projectPath || normalized.startsWith(`${projectPath}/`);
-    })
-    .sort((left, right) => normalizeProjectPath(right.path).length - normalizeProjectPath(left.path).length)[0];
-
-  return match ? { id: match.id, path: match.path } : null;
-};
 
 const appendDistilledInsightToNotes = (existingNotes: string, insight: string): string => {
   const trimmedInsight = insight.trim().replace(/^[-*+]\s+/, '');
@@ -255,7 +222,8 @@ export const TextSelectionMenu: React.FC<TextSelectionMenuProps> = ({ containerR
   const setPendingInputText = useInputStore((state) => state.setPendingInputText);
   const isMobile = useUIStore((state) => state.isMobile);
   const projects = useProjectsStore((state) => state.projects);
-  const activeProjectId = useProjectsStore((state) => state.activeProjectId);
+  const availableWorktreesByProject = useSessionUIStore((state) => state.availableWorktreesByProject);
+  const effectiveDirectory = useEffectiveDirectory();
   const sessions = useSessions();
 
   React.useEffect(() => {
@@ -521,9 +489,11 @@ export const TextSelectionMenu: React.FC<TextSelectionMenuProps> = ({ containerR
   }, [currentSessionId, sessions]);
 
   const currentProjectRef = React.useMemo(() => {
-    const directory = typeof currentSession?.directory === 'string' ? currentSession.directory : '';
-    return resolveProjectRefForDirectory(directory, projects, activeProjectId);
-  }, [activeProjectId, currentSession?.directory, projects]);
+    const directory = effectiveDirectory
+      ?? (typeof currentSession?.directory === 'string' ? currentSession.directory : '');
+    const resolved = resolveProjectForSessionDirectory(projects, availableWorktreesByProject, directory);
+    return resolved ? { id: resolved.id, path: resolved.path } : null;
+  }, [availableWorktreesByProject, currentSession?.directory, effectiveDirectory, projects]);
 
   const handleAddToNotes = React.useCallback(async () => {
     if (!selectedText || !currentProjectRef) {

packages/ui/src/lib/projectResolution.ts

@@ -0,0 +1,69 @@
+import type { ProjectEntry } from "@/lib/api/types";
+import type { WorktreeMetadata } from "@/types/worktree";
+
+export const normalizeProjectPath = (value?: string | null): string | null => {
+  if (typeof value !== "string") return null;
+  const trimmed = value.trim();
+  if (!trimmed) return null;
+  const replaced = trimmed.replace(/\\/g, "/");
+  if (replaced === "/") return "/";
+  return replaced.length > 1 ? replaced.replace(/\/+$/, "") : replaced;
+};
+
+export const resolveProjectForDirectory = (
+  projects: ProjectEntry[],
+  directory: string | null,
+): ProjectEntry | null => {
+  const nd = normalizeProjectPath(directory);
+  if (!nd) return null;
+  let best: ProjectEntry | null = null;
+  for (const p of projects) {
+    const pp = normalizeProjectPath(p.path);
+    if (!pp) continue;
+    if (nd !== pp && !nd.startsWith(`${pp}/`)) continue;
+    if (!best || pp.length > (normalizeProjectPath(best.path)?.length ?? 0)) best = p;
+  }
+  return best;
+};
+
+export const resolveProjectFromWorktreeDirectory = (
+  projects: ProjectEntry[],
+  availableWorktreesByProject: Map<string, WorktreeMetadata[]>,
+  directory: string | null,
+): ProjectEntry | null => {
+  const nd = normalizeProjectPath(directory);
+  if (!nd) return null;
+  let matchedWorktree: WorktreeMetadata | null = null;
+  let matchedProjectPath: string | null = null;
+  let bestLen = -1;
+  for (const [projectPath, worktrees] of availableWorktreesByProject.entries()) {
+    for (const wt of worktrees) {
+      const wp = normalizeProjectPath(wt.path);
+      if (!wp) continue;
+      if (nd !== wp && !nd.startsWith(`${wp}/`)) continue;
+      if (wp.length > bestLen) {
+        bestLen = wp.length;
+        matchedWorktree = wt;
+        matchedProjectPath = normalizeProjectPath(projectPath);
+      }
+    }
+  }
+  if (!matchedWorktree) return null;
+  const candidates = [normalizeProjectPath(matchedWorktree.projectDirectory), matchedProjectPath]
+    .filter((v): v is string => Boolean(v));
+  for (const c of candidates) {
+    const exact = projects.find((p) => normalizeProjectPath(p.path) === c) ?? null;
+    if (exact) return exact;
+    const nested = resolveProjectForDirectory(projects, c);
+    if (nested) return nested;
+  }
+  return null;
+};
+
+export const resolveProjectForSessionDirectory = (
+  projects: ProjectEntry[],
+  availableWorktreesByProject: Map<string, WorktreeMetadata[]>,
+  directory: string | null,
+): ProjectEntry | null =>
+  resolveProjectFromWorktreeDirectory(projects, availableWorktreesByProject, directory) ??
+  resolveProjectForDirectory(projects, directory);

packages/ui/src/sync/session-ui-store.ts

@@ -28,6 +28,7 @@ import { flattenAssistantTextParts } from "@/lib/messages/messageText"
 import { EXECUTION_FORK_META_TEXT } from "@/lib/messages/executionMeta"
 import { waitForWorktreeBootstrap } from "@/lib/worktrees/worktreeBootstrap"
 import { waitForPendingDraftWorktreeRequest } from "@/lib/worktrees/pendingDraftWorktree"
+import { resolveProjectForSessionDirectory } from "@/lib/projectResolution"
 import type { ProjectEntry } from "@/lib/api/types"
 import {
   getSyncSessions,
@@ -292,59 +293,7 @@ const persistDraftTarget = (target: PersistedDraftTarget): void => {
   } catch { /* ignored */ }
 }
 
-const resolveProjectForDirectory = (projects: ProjectEntry[], directory: string | null): ProjectEntry | null => {
-  const nd = normalizePath(directory)
-  if (!nd) return null
-  let best: ProjectEntry | null = null
-  for (const p of projects) {
-    const pp = normalizePath(p.path)
-    if (!pp) continue
-    if (nd !== pp && !nd.startsWith(`${pp}/`)) continue
-    if (!best || pp.length > (normalizePath(best.path)?.length ?? 0)) best = p
-  }
-  return best
-}
-
-const resolveProjectFromWorktreeDirectory = (
-  projects: ProjectEntry[],
-  availableWorktreesByProject: Map<string, WorktreeMetadata[]>,
-  directory: string | null,
-): ProjectEntry | null => {
-  const nd = normalizePath(directory)
-  if (!nd) return null
-  let matchedWorktree: WorktreeMetadata | null = null
-  let matchedProjectPath: string | null = null
-  let bestLen = -1
-  for (const [projectPath, worktrees] of availableWorktreesByProject.entries()) {
-    for (const wt of worktrees) {
-      const wp = normalizePath(wt.path)
-      if (!wp) continue
-      if (nd !== wp && !nd.startsWith(`${wp}/`)) continue
-      if (wp.length > bestLen) {
-        bestLen = wp.length
-        matchedWorktree = wt
-        matchedProjectPath = normalizePath(projectPath)
-      }
-    }
-  }
-  if (!matchedWorktree) return null
-  const candidates = [normalizePath(matchedWorktree.projectDirectory), matchedProjectPath].filter((v): v is string => Boolean(v))
-  for (const c of candidates) {
-    const exact = projects.find((p) => normalizePath(p.path) === c) ?? null
-    if (exact) return exact
-    const nested = resolveProjectForDirectory(projects, c)
-    if (nested) return nested
-  }
-  return null
-}
-
-const resolveDraftProjectForDirectory = (
-  projects: ProjectEntry[],
-  availableWorktreesByProject: Map<string, WorktreeMetadata[]>,
-  directory: string | null,
-): ProjectEntry | null =>
-  resolveProjectFromWorktreeDirectory(projects, availableWorktreesByProject, directory) ??
-  resolveProjectForDirectory(projects, directory)
+const resolveDraftProjectForDirectory = resolveProjectForSessionDirectory
 
 const getAttachmentForSession = (sessionId: string | null | undefined): SessionWorktreeAttachment | undefined => {
   if (!sessionId) return undefined