fix: enhance message sending reliability and error handling

- Improved the message sending process in `handleSendMessage` by separating try blocks for stdin delivery and persistence, preventing fallback to inbox on stdin success.
- Added logging for persistence failures after stdin delivery to ensure better tracking of issues.
- Updated `TeamSentMessagesStore` to handle IO errors gracefully, preserving optional fields and preventing crashes.
- Enhanced `MessageComposer` to clear draft only after successful message send, improving user experience.

src/main/ipc/teams.ts

@@ -788,15 +788,39 @@ async function handleSendMessage(
 
     // Smart routing: lead + alive → stdin direct, else → inbox
     if (isLeadRecipient && isAlive) {
+      // Separate try blocks: stdin delivery vs persistence
+      // If stdin succeeds but persistence fails, do NOT fallback to inbox (would duplicate)
+      let stdinSent = false;
       try {
         await provisioning.sendMessageToTeam(tn, payload.text!, validatedAttachments);
+        stdinSent = true;
+      } catch (stdinError: unknown) {
+        // Stdin failed (process died between check and write)
+        // If attachments were requested, fail rather than silently dropping them
+        if (validatedAttachments?.length) {
+          throw new Error(
+            'Failed to deliver message with attachments: team process became unavailable'
+          );
+        }
+        const errMsg = stdinError instanceof Error ? stdinError.message : 'unknown error';
+        logger.warn(`stdin fallback for ${tn}: ${errMsg}`);
+        // Fallback to inbox path below
+      }
 
-        const result = await getTeamDataService().sendDirectToLead(
+      if (stdinSent) {
-          tn,
+        // Persistence is best-effort — stdin already delivered the message
-          leadName,
+        let result: SendMessageResult;
-          payload.text!,
+        try {
-          payload.summary
+          result = await getTeamDataService().sendDirectToLead(
-        );
+            tn,
+            leadName,
+            payload.text!,
+            payload.summary
+          );
+        } catch (persistError) {
+          logger.warn(`Persistence failed after stdin delivery for ${tn}: ${String(persistError)}`);
+          result = { deliveredToInbox: false, messageId: `stdin-${Date.now()}` };
+        }
 
         const attachmentMeta: AttachmentMeta[] | undefined = validatedAttachments?.map((a) => ({
           id: a.id,
@@ -825,17 +849,6 @@ async function handleSendMessage(
         });
 
         return result;
-      } catch (stdinError: unknown) {
-        // Stdin failed (process died between check and write)
-        // If attachments were requested, fail rather than silently dropping them
-        if (validatedAttachments?.length) {
-          throw new Error(
-            'Failed to deliver message with attachments: team process became unavailable'
-          );
-        }
-        const errMsg = stdinError instanceof Error ? stdinError.message : 'unknown error';
-        logger.warn(`stdin fallback for ${tn}: ${errMsg}`);
-        // Fallback to inbox path for text-only messages
       }
     }
 

src/main/services/team/TeamSentMessagesStore.ts

@@ -1,4 +1,5 @@
 import { getTeamsBasePath } from '@main/utils/pathDecoder';
+import { createLogger } from '@shared/utils/logger';
 import * as fs from 'fs';
 import * as path from 'path';
 
@@ -7,6 +8,7 @@ import { atomicWriteAsync } from './atomicWrite';
 import type { InboxMessage } from '@shared/types';
 
 const MAX_MESSAGES = 200;
+const logger = createLogger('TeamSentMessagesStore');
 
 export class TeamSentMessagesStore {
   private getFilePath(teamName: string): string {
@@ -23,7 +25,9 @@ export class TeamSentMessagesStore {
       if ((error as NodeJS.ErrnoException).code === 'ENOENT') {
         return [];
       }
-      throw error;
+      // Bug #4: graceful degradation instead of crashing
+      logger.error(`Failed to read sent messages for ${teamName}: ${String(error)}`);
+      return [];
     }
 
     let parsed: unknown;
@@ -48,6 +52,7 @@ export class TeamSentMessagesStore {
       ) {
         continue;
       }
+      // Bug #5: preserve optional fields (attachments, color)
       messages.push({
         from: row.from,
         to: typeof row.to === 'string' ? row.to : undefined,
@@ -56,6 +61,8 @@ export class TeamSentMessagesStore {
         read: typeof row.read === 'boolean' ? row.read : true,
         summary: typeof row.summary === 'string' ? row.summary : undefined,
         messageId: typeof row.messageId === 'string' ? row.messageId : undefined,
+        color: typeof row.color === 'string' ? row.color : undefined,
+        attachments: Array.isArray(row.attachments) ? row.attachments : undefined,
         source: 'user_sent',
       });
     }
@@ -64,12 +71,17 @@ export class TeamSentMessagesStore {
   }
 
   async appendMessage(teamName: string, message: InboxMessage): Promise<void> {
-    const existing = await this.readMessages(teamName);
+    // Bug #6: wrap in try/catch to prevent crash on IO errors
-    existing.push(message);
+    try {
+      const existing = await this.readMessages(teamName);
+      existing.push(message);
 
-    // Trim to MAX_MESSAGES (keep newest)
+      // Trim to MAX_MESSAGES (keep newest)
-    const trimmed = existing.length > MAX_MESSAGES ? existing.slice(-MAX_MESSAGES) : existing;
+      const trimmed = existing.length > MAX_MESSAGES ? existing.slice(-MAX_MESSAGES) : existing;
 
-    await atomicWriteAsync(this.getFilePath(teamName), JSON.stringify(trimmed, null, 2));
+      await atomicWriteAsync(this.getFilePath(teamName), JSON.stringify(trimmed, null, 2));
+    } catch (error) {
+      logger.error(`Failed to append sent message for ${teamName}: ${String(error)}`);
+    }
   }
 }

src/renderer/components/layout/SidebarHeader.tsx

@@ -155,6 +155,7 @@ export const SidebarHeader = (): React.JSX.Element => {
     projects,
     activeProjectId,
     setActiveProject,
+    clearActiveProject,
     fetchRepositoryGroups,
     fetchProjects,
     toggleSidebar,
@@ -169,6 +170,7 @@ export const SidebarHeader = (): React.JSX.Element => {
       projects: s.projects,
       activeProjectId: s.activeProjectId,
       setActiveProject: s.setActiveProject,
+      clearActiveProject: s.clearActiveProject,
       fetchRepositoryGroups: s.fetchRepositoryGroups,
       fetchProjects: s.fetchProjects,
       toggleSidebar: s.toggleSidebar,
@@ -279,6 +281,8 @@ export const SidebarHeader = (): React.JSX.Element => {
                 : 'Nothing found'
             }
             className="text-sm font-medium"
+            resetLabel="Reset selection"
+            onReset={clearActiveProject}
             renderOption={(option, isSelected) => {
               const sessionCount = (option.meta?.sessionCount as number) ?? 0;
               const path = option.meta?.path as string | undefined;

src/renderer/components/team/TeamDetailView.tsx

@@ -24,6 +24,7 @@ import {
   Play,
   Plus,
   Search,
+  Square,
   Trash2,
   UserPlus,
   X,
@@ -107,6 +108,7 @@ export const TeamDetailView = ({ teamName }: TeamDetailViewProps): React.JSX.Ele
   const [launchDialogOpen, setLaunchDialogOpen] = useState(false);
   const [sendDialogOpen, setSendDialogOpen] = useState(false);
   const [deleteConfirmOpen, setDeleteConfirmOpen] = useState(false);
+  const [stoppingTeam, setStoppingTeam] = useState(false);
   const [sendDialogRecipient, setSendDialogRecipient] = useState<string | undefined>(undefined);
   const [replyQuote, setReplyQuote] = useState<{ from: string; text: string } | undefined>(
     undefined
@@ -427,6 +429,17 @@ export const TeamDetailView = ({ teamName }: TeamDetailViewProps): React.JSX.Ele
     });
   };
 
+  const handleStopTeam = useCallback(async (): Promise<void> => {
+    setStoppingTeam(true);
+    try {
+      await api.teams.stop(teamName);
+    } catch (err) {
+      console.error('Failed to stop team:', err);
+    } finally {
+      setStoppingTeam(false);
+    }
+  }, [teamName]);
+
   const handleDeleteTeam = useCallback((): void => {
     setDeleteConfirmOpen(true);
   }, []);
@@ -552,6 +565,23 @@ export const TeamDetailView = ({ teamName }: TeamDetailViewProps): React.JSX.Ele
             <h2 className="text-base font-semibold text-[var(--color-text)]">{data.config.name}</h2>
           </div>
           <div className="flex shrink-0 items-center gap-1.5">
+            {data.isAlive && (
+              <Tooltip>
+                <TooltipTrigger asChild>
+                  <Button
+                    variant="ghost"
+                    size="sm"
+                    className="h-7 gap-1 px-2 text-xs text-red-400 hover:bg-red-500/10 hover:text-red-300"
+                    disabled={stoppingTeam}
+                    onClick={() => void handleStopTeam()}
+                  >
+                    <Square size={12} className={stoppingTeam ? 'animate-pulse' : ''} />
+                    Stop
+                  </Button>
+                </TooltipTrigger>
+                <TooltipContent side="bottom">Stop team</TooltipContent>
+              </Tooltip>
+            )}
             <Tooltip>
               <TooltipTrigger asChild>
                 <Button
@@ -603,7 +633,7 @@ export const TeamDetailView = ({ teamName }: TeamDetailViewProps): React.JSX.Ele
         )}
       </div>
 
-      {!data.isAlive ? (
+      {!data.isAlive && !isTeamProvisioning ? (
         <div className="mb-3 flex items-center justify-between gap-3 rounded-md border border-amber-500/40 bg-amber-500/10 px-3 py-2">
           <span className="text-xs text-amber-200">Team is offline</span>
           <Button

src/renderer/components/team/attachments/DropZoneOverlay.tsx

@@ -8,8 +8,17 @@ export const DropZoneOverlay = ({ active }: DropZoneOverlayProps): React.JSX.Ele
   if (!active) return null;
 
   return (
-    <div className="pointer-events-none absolute inset-0 z-10 flex items-center justify-center rounded-md border-2 border-dashed border-blue-400/60 bg-blue-500/10 backdrop-blur-[1px]">
+    <div
-      <div className="flex flex-col items-center gap-1.5 text-blue-400">
+      className="pointer-events-none absolute inset-0 z-10 flex items-center justify-center rounded-md border-2 border-dashed backdrop-blur-[1px]"
+      style={{
+        borderColor: 'var(--color-accent, #6366f1)',
+        backgroundColor: 'color-mix(in srgb, var(--color-accent, #6366f1) 10%, transparent)',
+      }}
+    >
+      <div
+        className="flex flex-col items-center gap-1.5"
+        style={{ color: 'var(--color-accent, #6366f1)' }}
+      >
         <ImagePlus size={24} />
         <span className="text-xs font-medium">Drop images here</span>
       </div>

src/renderer/components/team/kanban/KanbanBoard.tsx

@@ -14,6 +14,7 @@ import {
   Eye,
   LayoutGrid,
   PlayCircle,
+  Plus,
   ShieldCheck,
 } from 'lucide-react';
 
@@ -280,7 +281,22 @@ export const KanbanBoard = ({
 
   const renderCards = (columnId: KanbanColumnId, columnTasks: TeamTask[]): React.JSX.Element => {
     if (columnTasks.length === 0) {
-      return (
+      const addHandler =
+        onAddTask && columnId === 'todo'
+          ? () => onAddTask(false)
+          : onAddTask && columnId === 'in_progress'
+            ? () => onAddTask(true)
+            : undefined;
+      return addHandler ? (
+        <button
+          type="button"
+          onClick={addHandler}
+          className="flex w-full items-center justify-center gap-1.5 rounded-md border border-dashed border-[var(--color-border)] p-3 text-xs text-[var(--color-text-muted)] transition-colors hover:border-[var(--color-border-emphasis)] hover:text-[var(--color-text-secondary)]"
+        >
+          <Plus size={13} />
+          Add task
+        </button>
+      ) : (
         <div className="rounded-md border border-dashed border-[var(--color-border)] p-3 text-xs text-[var(--color-text-muted)]">
           No tasks
         </div>
@@ -398,12 +414,6 @@ export const KanbanBoard = ({
           {COLUMNS.map((column) => {
             const columnTasks = groupedOrdered.get(column.id) ?? [];
             const accent = COLUMN_ACCENTS[column.id];
-            const addHandler =
-              onAddTask && column.id === 'todo'
-                ? () => onAddTask(false)
-                : onAddTask && column.id === 'in_progress'
-                  ? () => onAddTask(true)
-                  : undefined;
             return (
               <KanbanColumn
                 key={column.id}
@@ -412,7 +422,6 @@ export const KanbanBoard = ({
                 icon={accent.icon}
                 headerBg={accent.headerBg}
                 bodyBg={accent.bodyBg}
-                onAddTask={addHandler}
               >
                 {renderCards(column.id, columnTasks)}
               </KanbanColumn>
@@ -424,12 +433,6 @@ export const KanbanBoard = ({
           {COLUMNS.map((column) => {
             const columnTasks = groupedOrdered.get(column.id) ?? [];
             const accent = COLUMN_ACCENTS[column.id];
-            const addHandler =
-              onAddTask && column.id === 'todo'
-                ? () => onAddTask(false)
-                : onAddTask && column.id === 'in_progress'
-                  ? () => onAddTask(true)
-                  : undefined;
             return (
               <div key={column.id} className="w-64 shrink-0">
                 <KanbanColumn
@@ -438,7 +441,6 @@ export const KanbanBoard = ({
                   icon={accent.icon}
                   headerBg={accent.headerBg}
                   bodyBg={accent.bodyBg}
-                  onAddTask={addHandler}
                 >
                   {renderCards(column.id, columnTasks)}
                 </KanbanColumn>

src/renderer/components/team/kanban/KanbanColumn.tsx

@@ -1,6 +1,5 @@
 import { Badge } from '@renderer/components/ui/badge';
 import { cn } from '@renderer/lib/utils';
-import { Plus } from 'lucide-react';
 
 interface KanbanColumnProps {
   title: string;
@@ -8,7 +7,6 @@ interface KanbanColumnProps {
   icon?: React.ReactNode;
   headerBg?: string;
   bodyBg?: string;
-  onAddTask?: () => void;
   children: React.ReactNode;
 }
 
@@ -18,7 +16,6 @@ export const KanbanColumn = ({
   icon,
   headerBg,
   bodyBg,
-  onAddTask,
   children,
 }: KanbanColumnProps): React.JSX.Element => {
   return (
@@ -37,21 +34,9 @@ export const KanbanColumn = ({
           {icon}
           {title}
         </h4>
-        <div className="flex items-center gap-1.5">
+        <Badge variant="secondary" className="px-2 py-0.5 text-[10px] font-normal">
-          {onAddTask ? (
+          {count}
-            <button
+        </Badge>
-              type="button"
-              onClick={onAddTask}
-              className="inline-flex size-5 items-center justify-center rounded text-[var(--color-text-muted)] transition-colors hover:bg-white/10 hover:text-[var(--color-text)]"
-              aria-label={`Add task to ${title}`}
-            >
-              <Plus size={13} />
-            </button>
-          ) : null}
-          <Badge variant="secondary" className="px-2 py-0.5 text-[10px] font-normal">
-            {count}
-          </Badge>
-        </div>
       </header>
       <div className="flex max-h-[480px] flex-col gap-2 overflow-auto p-2">{children}</div>
     </section>

src/renderer/components/team/messages/MessageComposer.tsx

@@ -1,4 +1,4 @@
-import { useCallback, useMemo, useRef, useState } from 'react';
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 
 import { AttachmentPreviewList } from '@renderer/components/team/attachments/AttachmentPreviewList';
 import { DropZoneOverlay } from '@renderer/components/team/attachments/DropZoneOverlay';
@@ -81,13 +81,26 @@ export const MessageComposer = ({
   const isLeadRecipient = selectedMember?.role === 'lead' || selectedMember?.name === 'team-lead';
   const canAttach = isLeadRecipient && isTeamAlive && canAddMore;
 
+  // Track whether we initiated a send — clear draft only on confirmed success
+  const pendingSendRef = useRef(false);
+
   const handleSend = useCallback(() => {
     if (!canSend) return;
     const autoSummary = trimmed.length > 60 ? trimmed.slice(0, 57) + '...' : trimmed;
+    pendingSendRef.current = true;
     onSend(recipient, trimmed, autoSummary, attachments.length > 0 ? attachments : undefined);
-    draft.clearDraft();
+  }, [canSend, recipient, trimmed, onSend, attachments]);
-    clearAttachments();
+
-  }, [canSend, recipient, trimmed, onSend, draft, attachments, clearAttachments]);
+  // Clear draft only after send completes successfully (sending: true → false, no error)
+  useEffect(() => {
+    if (!sending && pendingSendRef.current) {
+      pendingSendRef.current = false;
+      if (!sendError) {
+        draft.clearDraft();
+        clearAttachments();
+      }
+    }
+  }, [sending, sendError, draft, clearAttachments]);
 
   const handleKeyDownCapture = useCallback(
     (e: React.KeyboardEvent) => {

src/renderer/components/ui/combobox.tsx

@@ -2,7 +2,7 @@ import * as React from 'react';
 
 import { cn } from '@renderer/lib/utils';
 import { Command as CommandPrimitive } from 'cmdk';
-import { Check, ChevronsUpDown } from 'lucide-react';
+import { Check, ChevronsUpDown, X } from 'lucide-react';
 
 import { Popover, PopoverContent, PopoverTrigger } from './popover';
 
@@ -24,6 +24,10 @@ interface ComboboxProps {
   disabled?: boolean;
   className?: string;
   renderOption?: (option: ComboboxOption, isSelected: boolean, query: string) => React.ReactNode;
+  /** Label for the reset item shown at the top of the dropdown. */
+  resetLabel?: string;
+  /** Called when the user clicks the reset item. */
+  onReset?: () => void;
 }
 
 export const Combobox = ({
@@ -36,6 +40,8 @@ export const Combobox = ({
   disabled = false,
   className,
   renderOption,
+  resetLabel,
+  onReset,
 }: ComboboxProps): React.JSX.Element => {
   const [open, setOpen] = React.useState(false);
   const [search, setSearch] = React.useState('');
@@ -91,6 +97,23 @@ export const Combobox = ({
             <CommandPrimitive.Empty className="py-4 pr-2 text-center text-xs text-[var(--color-text-muted)]">
               {emptyMessage}
             </CommandPrimitive.Empty>
+            {onReset && value && !search.trim() ? (
+              <CommandPrimitive.Item
+                value="__reset__"
+                onSelect={() => {
+                  onReset();
+                  setOpen(false);
+                  setSearch('');
+                }}
+                className="relative flex w-full cursor-default select-none items-center rounded-sm py-1.5 pl-0 pr-2 text-xs outline-none data-[selected=true]:bg-[var(--color-surface-raised)] data-[selected=true]:text-[var(--color-text)]"
+                style={{ paddingLeft: 0 }}
+              >
+                <X className="mr-2 size-3.5 shrink-0 text-[var(--color-text-muted)]" />
+                <span className="text-[var(--color-text-muted)]">
+                  {resetLabel ?? 'Reset selection'}
+                </span>
+              </CommandPrimitive.Item>
+            ) : null}
             {options
               .filter((opt) => {
                 if (!search.trim()) return true;

src/renderer/store/slices/tabSlice.ts

@@ -22,7 +22,11 @@ import {
   syncFocusedPaneState,
   updatePane,
 } from '../utils/paneHelpers';
-import { getFullResetState, getWorktreeNavigationState } from '../utils/stateResetHelpers';
+import {
+  getFullResetState,
+  getSessionResetState,
+  getWorktreeNavigationState,
+} from '../utils/stateResetHelpers';
 
 import type { AppState, SearchNavigationContext } from '../types';
 import type { PaneLayout } from '@renderer/types/panes';
@@ -55,6 +59,7 @@ export interface TabSlice {
 
   // Project context actions
   setActiveProject: (projectId: string) => void;
+  clearActiveProject: () => void;
 
   // Per-tab UI state actions
   setTabContextPanelVisible: (tabId: string, visible: boolean) => void;
@@ -678,6 +683,16 @@ export const createTabSlice: StateCreator<AppState, [], [], TabSlice> = (set, ge
     get().selectProject(projectId);
   },
 
+  clearActiveProject: () => {
+    set({
+      activeProjectId: null,
+      selectedProjectId: null,
+      selectedRepositoryId: null,
+      selectedWorktreeId: null,
+      ...getSessionResetState(),
+    });
+  },
+
   // Navigate to a session (from search or other sources)
   navigateToSession: (
     projectId: string,