Merge v0.14.0rc into refactor/store-ui-slice

Resolve merge conflict in app-store.ts by keeping UI slice implementation
of getEffectiveFontSans/getEffectiveFontMono (already provided by ui-slice.ts)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/server/src/routes/features/routes/create.ts

@@ -43,7 +43,7 @@ export function createCreateHandler(featureLoader: FeatureLoader, events?: Event
       if (events) {
         events.emit('feature:created', {
           featureId: created.id,
-          featureName: created.name,
+          featureName: created.title || 'Untitled Feature',
           projectPath,
         });
       }

apps/server/src/routes/fs/routes/save-board-background.ts

@@ -31,7 +31,9 @@ export function createSaveBoardBackgroundHandler() {
       await secureFs.mkdir(boardDir, { recursive: true });
 
       // Decode base64 data (remove data URL prefix if present)
-      const base64Data = data.replace(/^data:image\/\w+;base64,/, '');
+      // Use a regex that handles all data URL formats including those with extra params
+      // e.g., data:image/gif;charset=utf-8;base64,R0lGOD...
+      const base64Data = data.replace(/^data:[^,]+,/, '');
       const buffer = Buffer.from(base64Data, 'base64');
 
       // Use a fixed filename for the board background (overwrite previous)

apps/server/src/routes/fs/routes/save-image.ts

@@ -31,7 +31,9 @@ export function createSaveImageHandler() {
       await secureFs.mkdir(imagesDir, { recursive: true });
 
       // Decode base64 data (remove data URL prefix if present)
-      const base64Data = data.replace(/^data:image\/\w+;base64,/, '');
+      // Use a regex that handles all data URL formats including those with extra params
+      // e.g., data:image/gif;charset=utf-8;base64,R0lGOD...
+      const base64Data = data.replace(/^data:[^,]+,/, '');
       const buffer = Buffer.from(base64Data, 'base64');
 
       // Generate unique filename with timestamp

apps/server/src/services/auto-mode-service.ts

@@ -4597,21 +4597,54 @@ This mock response was generated because AUTOMAKER_MOCK_AGENT=true was set.
                           planVersion,
                         });
 
-                        // Build revision prompt
-                        let revisionPrompt = `The user has requested revisions to the plan/specification.
+                        // Build revision prompt using customizable template
+                        const revisionPrompts = await getPromptCustomization(
+                          this.settingsService,
+                          '[AutoMode]'
+                        );
 
-## Previous Plan (v${planVersion - 1})
-${hasEdits ? approvalResult.editedPlan : currentPlanContent}
+                        // Get task format example based on planning mode
+                        const taskFormatExample =
+                          planningMode === 'full'
+                            ? `\`\`\`tasks
+## Phase 1: Foundation
+- [ ] T001: [Description] | File: [path/to/file]
+- [ ] T002: [Description] | File: [path/to/file]
 
-## User Feedback
-${approvalResult.feedback || 'Please revise the plan based on the edits above.'}
+## Phase 2: Core Implementation
+- [ ] T003: [Description] | File: [path/to/file]
+- [ ] T004: [Description] | File: [path/to/file]
+\`\`\``
+                            : `\`\`\`tasks
+- [ ] T001: [Description] | File: [path/to/file]
+- [ ] T002: [Description] | File: [path/to/file]
+- [ ] T003: [Description] | File: [path/to/file]
+\`\`\``;
 
-## Instructions
-Please regenerate the specification incorporating the user's feedback.
-Keep the same format with the \`\`\`tasks block for task definitions.
-After generating the revised spec, output:
-"[SPEC_GENERATED] Please review the revised specification above."
-`;
+                        let revisionPrompt = revisionPrompts.taskExecution.planRevisionTemplate;
+                        revisionPrompt = revisionPrompt.replace(
+                          /\{\{planVersion\}\}/g,
+                          String(planVersion - 1)
+                        );
+                        revisionPrompt = revisionPrompt.replace(
+                          /\{\{previousPlan\}\}/g,
+                          hasEdits
+                            ? approvalResult.editedPlan || currentPlanContent
+                            : currentPlanContent
+                        );
+                        revisionPrompt = revisionPrompt.replace(
+                          /\{\{userFeedback\}\}/g,
+                          approvalResult.feedback ||
+                            'Please revise the plan based on the edits above.'
+                        );
+                        revisionPrompt = revisionPrompt.replace(
+                          /\{\{planningMode\}\}/g,
+                          planningMode
+                        );
+                        revisionPrompt = revisionPrompt.replace(
+                          /\{\{taskFormatExample\}\}/g,
+                          taskFormatExample
+                        );
 
                         // Update status to regenerating
                         await this.updateFeaturePlanSpec(projectPath, featureId, {
@@ -4663,6 +4696,26 @@ After generating the revised spec, output:
                         const revisedTasks = parseTasksFromSpec(currentPlanContent);
                         logger.info(`Revised plan has ${revisedTasks.length} tasks`);
 
+                        // Warn if no tasks found in spec/full mode - this may cause fallback to single-agent
+                        if (
+                          revisedTasks.length === 0 &&
+                          (planningMode === 'spec' || planningMode === 'full')
+                        ) {
+                          logger.warn(
+                            `WARNING: Revised plan in ${planningMode} mode has no tasks! ` +
+                              `This will cause fallback to single-agent execution. ` +
+                              `The AI may have omitted the required \`\`\`tasks block.`
+                          );
+                          this.emitAutoModeEvent('plan_revision_warning', {
+                            featureId,
+                            projectPath,
+                            branchName,
+                            planningMode,
+                            warning:
+                              'Revised plan missing tasks block - will use single-agent execution',
+                          });
+                        }
+
                         // Update planSpec with revised content
                         await this.updateFeaturePlanSpec(projectPath, featureId, {
                           status: 'generated',

apps/server/src/services/event-hook-service.ts

@@ -169,9 +169,10 @@ export class EventHookService {
     }
 
     // Build context for variable substitution
+    // Use loaded featureName (from feature.title) or fall back to payload.featureName
     const context: HookContext = {
       featureId: payload.featureId,
-      featureName: payload.featureName,
+      featureName: featureName || payload.featureName,
       projectPath: payload.projectPath,
       projectName: payload.projectPath ? this.extractProjectName(payload.projectPath) : undefined,
       error: payload.error || payload.message,

apps/ui/src/components/layout/project-switcher/components/edit-project-dialog.tsx

@@ -15,6 +15,7 @@ import { getAuthenticatedImageUrl } from '@/lib/api-fetch';
 import { getHttpApiClient } from '@/lib/http-api-client';
 import type { Project } from '@/lib/electron';
 import { IconPicker } from './icon-picker';
+import { toast } from 'sonner';
 
 interface EditProjectDialogProps {
   project: Project;
@@ -52,11 +53,18 @@ export function EditProjectDialog({ project, open, onOpenChange }: EditProjectDi
     // Validate file type
     const validTypes = ['image/jpeg', 'image/png', 'image/gif', 'image/webp'];
     if (!validTypes.includes(file.type)) {
+      toast.error(
+        `Invalid file type: ${file.type || 'unknown'}. Please use JPG, PNG, GIF or WebP.`
+      );
       return;
     }
 
-    // Validate file size (max 2MB for icons)
-    if (file.size > 2 * 1024 * 1024) {
+    // Validate file size (max 5MB for icons - allows animated GIFs)
+    const maxSize = 5 * 1024 * 1024;
+    if (file.size > maxSize) {
+      toast.error(
+        `File too large (${(file.size / 1024 / 1024).toFixed(2)} MB). Maximum size is 5 MB.`
+      );
       return;
     }
 
@@ -72,15 +80,24 @@ export function EditProjectDialog({ project, open, onOpenChange }: EditProjectDi
           file.type,
           project.path
         );
+
         if (result.success && result.path) {
           setCustomIconPath(result.path);
           // Clear the Lucide icon when custom icon is set
           setIcon(null);
+          toast.success('Icon uploaded successfully');
+        } else {
+          toast.error('Failed to upload icon');
         }
         setIsUploadingIcon(false);
       };
+      reader.onerror = () => {
+        toast.error('Failed to read file');
+        setIsUploadingIcon(false);
+      };
       reader.readAsDataURL(file);
     } catch {
+      toast.error('Failed to upload icon');
       setIsUploadingIcon(false);
     }
   };
@@ -162,7 +179,7 @@ export function EditProjectDialog({ project, open, onOpenChange }: EditProjectDi
                     {isUploadingIcon ? 'Uploading...' : 'Upload Custom Icon'}
                   </Button>
                   <p className="text-xs text-muted-foreground mt-1">
-                    PNG, JPG, GIF or WebP. Max 2MB.
+                    PNG, JPG, GIF or WebP. Max 5MB.
                   </p>
                 </div>
               </div>

apps/ui/src/components/layout/project-switcher/components/project-context-menu.tsx

@@ -59,7 +59,7 @@ interface ThemeButtonProps {
   /** Handler for pointer leave events (used to clear preview) */
   onPointerLeave: (e: React.PointerEvent) => void;
   /** Handler for click events (used to select theme) */
-  onClick: () => void;
+  onClick: (e: React.MouseEvent) => void;
 }
 
 /**
@@ -77,6 +77,7 @@ const ThemeButton = memo(function ThemeButton({
   const Icon = option.icon;
   return (
     <button
+      type="button"
       onPointerEnter={onPointerEnter}
       onPointerLeave={onPointerLeave}
       onClick={onClick}
@@ -145,7 +146,10 @@ const ThemeColumn = memo(function ThemeColumn({
             isSelected={selectedTheme === option.value}
             onPointerEnter={() => onPreviewEnter(option.value)}
             onPointerLeave={onPreviewLeave}
-            onClick={() => onSelect(option.value)}
+            onClick={(e) => {
+              e.stopPropagation();
+              onSelect(option.value);
+            }}
           />
         ))}
       </div>
@@ -193,7 +197,6 @@ export function ProjectContextMenu({
   const {
     moveProjectToTrash,
     theme: globalTheme,
-    setTheme,
     setProjectTheme,
     setPreviewTheme,
   } = useAppStore();
@@ -316,13 +319,24 @@ export function ProjectContextMenu({
 
   const handleThemeSelect = useCallback(
     (value: ThemeMode | typeof USE_GLOBAL_THEME) => {
+      // Clear any pending close timeout to prevent race conditions
+      if (closeTimeoutRef.current) {
+        clearTimeout(closeTimeoutRef.current);
+        closeTimeoutRef.current = null;
+      }
+
+      // Close menu first
+      setShowThemeSubmenu(false);
+      onClose();
+
+      // Then apply theme changes
       setPreviewTheme(null);
       const isUsingGlobal = value === USE_GLOBAL_THEME;
-      setTheme(isUsingGlobal ? globalTheme : value);
+      // Only set project theme - don't change global theme
+      // The UI uses getEffectiveTheme() which handles: previewTheme ?? projectTheme ?? globalTheme
       setProjectTheme(project.id, isUsingGlobal ? null : value);
-      setShowThemeSubmenu(false);
     },
-    [globalTheme, project.id, setPreviewTheme, setProjectTheme, setTheme]
+    [onClose, project.id, setPreviewTheme, setProjectTheme]
   );
 
   const handleConfirmRemove = useCallback(() => {
@@ -426,9 +440,13 @@ export function ProjectContextMenu({
                   <div className="p-2">
                     {/* Use Global Option */}
                     <button
+                      type="button"
                       onPointerEnter={() => handlePreviewEnter(globalTheme)}
                       onPointerLeave={handlePreviewLeave}
-                      onClick={() => handleThemeSelect(USE_GLOBAL_THEME)}
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        handleThemeSelect(USE_GLOBAL_THEME);
+                      }}
                       className={cn(
                         'w-full flex items-center gap-2 px-3 py-2 rounded-md',
                         'text-sm font-medium text-left',

apps/ui/src/components/layout/project-switcher/components/project-switcher-item.tsx

@@ -1,3 +1,4 @@
+import { useState } from 'react';
 import { Folder, LucideIcon } from 'lucide-react';
 import * as LucideIcons from 'lucide-react';
 import { cn, sanitizeForTestId } from '@/lib/utils';
@@ -19,6 +20,8 @@ export function ProjectSwitcherItem({
   onClick,
   onContextMenu,
 }: ProjectSwitcherItemProps) {
+  const [imageError, setImageError] = useState(false);
+
   // Convert index to hotkey label: 0 -> "1", 1 -> "2", ..., 8 -> "9", 9 -> "0"
   const hotkeyLabel =
     hotkeyIndex !== undefined && hotkeyIndex >= 0 && hotkeyIndex <= 9
@@ -35,7 +38,7 @@ export function ProjectSwitcherItem({
   };
 
   const IconComponent = getIconComponent();
-  const hasCustomIcon = !!project.customIconPath;
+  const hasCustomIcon = !!project.customIconPath && !imageError;
 
   // Combine project.id with sanitized name for uniqueness and readability
   // Format: project-switcher-{id}-{sanitizedName}
@@ -74,6 +77,7 @@ export function ProjectSwitcherItem({
             'w-8 h-8 rounded-lg object-cover transition-all duration-200',
             isActive ? 'ring-1 ring-brand-500/50' : 'group-hover:scale-110'
           )}
+          onError={() => setImageError(true)}
         />
       ) : (
         <IconComponent

apps/ui/src/components/layout/sidebar/components/project-selector-with-options.tsx

@@ -100,14 +100,8 @@ export function ProjectSelectorWithOptions({
 
   const { sensors, handleDragEnd } = useDragAndDrop({ projects, reorderProjects });
 
-  const {
-    globalTheme,
-    setTheme,
-    setProjectTheme,
-    setPreviewTheme,
-    handlePreviewEnter,
-    handlePreviewLeave,
-  } = useProjectTheme();
+  const { globalTheme, setProjectTheme, setPreviewTheme, handlePreviewEnter, handlePreviewLeave } =
+    useProjectTheme();
 
   if (!sidebarOpen || projects.length === 0) {
     return null;
@@ -281,11 +275,8 @@ export function ProjectSelectorWithOptions({
                   onValueChange={(value) => {
                     if (currentProject) {
                       setPreviewTheme(null);
-                      if (value !== '') {
-                        setTheme(value as ThemeMode);
-                      } else {
-                        setTheme(globalTheme);
-                      }
+                      // Only set project theme - don't change global theme
+                      // The UI uses getEffectiveTheme() which handles: previewTheme ?? projectTheme ?? globalTheme
                       setProjectTheme(
                         currentProject.id,
                         value === '' ? null : (value as ThemeMode)

apps/ui/src/components/layout/sidebar/components/sidebar-navigation.tsx

@@ -1,8 +1,11 @@
 import { useCallback, useEffect, useRef } from 'react';
 import type { NavigateOptions } from '@tanstack/react-router';
-import { ChevronDown, Wrench, Github } from 'lucide-react';
+import { ChevronDown, Wrench, Github, Folder } from 'lucide-react';
+import * as LucideIcons from 'lucide-react';
+import type { LucideIcon } from 'lucide-react';
 import { cn } from '@/lib/utils';
 import { formatShortcut, useAppStore } from '@/store/app-store';
+import { getAuthenticatedImageUrl } from '@/lib/api-fetch';
 import type { NavSection } from '../types';
 import type { Project } from '@/lib/electron';
 import type { SidebarStyle } from '@automaker/types';
@@ -97,6 +100,17 @@ export function SidebarNavigation({
     return !!currentProject;
   });
 
+  // Get the icon component for the current project
+  const getProjectIcon = (): LucideIcon => {
+    if (currentProject?.icon && currentProject.icon in LucideIcons) {
+      return (LucideIcons as unknown as Record<string, LucideIcon>)[currentProject.icon];
+    }
+    return Folder;
+  };
+
+  const ProjectIcon = getProjectIcon();
+  const hasCustomIcon = !!currentProject?.customIconPath;
+
   return (
     <nav
       ref={navRef}
@@ -106,6 +120,27 @@ export function SidebarNavigation({
         sidebarStyle === 'discord' ? 'pt-3' : 'mt-1'
       )}
     >
+      {/* Project name display for classic/discord mode */}
+      {sidebarStyle === 'discord' && currentProject && sidebarOpen && (
+        <div className="mb-3">
+          <div className="flex items-center gap-2.5 px-3 py-2">
+            {hasCustomIcon ? (
+              <img
+                src={getAuthenticatedImageUrl(currentProject.customIconPath!, currentProject.path)}
+                alt={currentProject.name}
+                className="w-5 h-5 rounded object-cover"
+              />
+            ) : (
+              <ProjectIcon className="w-5 h-5 text-brand-500 shrink-0" />
+            )}
+            <span className="text-sm font-medium text-foreground truncate">
+              {currentProject.name}
+            </span>
+          </div>
+          <div className="h-px bg-border/40 mx-1 mt-1" />
+        </div>
+      )}
+
       {/* Navigation sections */}
       {visibleSections.map((section, sectionIdx) => {
         const isCollapsed = section.label ? collapsedNavSections[section.label] : false;

apps/ui/src/components/layout/sidebar/components/theme-menu-item.tsx

@@ -9,19 +9,15 @@ export const ThemeMenuItem = memo(function ThemeMenuItem({
 }: ThemeMenuItemProps) {
   const Icon = option.icon;
   return (
-    <div
-      key={option.value}
+    <DropdownMenuRadioItem
+      value={option.value}
+      data-testid={`project-theme-${option.value}`}
+      className="text-xs py-1.5"
       onPointerEnter={() => onPreviewEnter(option.value)}
       onPointerLeave={onPreviewLeave}
     >
-      <DropdownMenuRadioItem
-        value={option.value}
-        data-testid={`project-theme-${option.value}`}
-        className="text-xs py-1.5"
-      >
-        <Icon className="w-3.5 h-3.5 mr-1.5" style={{ color: option.color }} />
-        <span>{option.label}</span>
-      </DropdownMenuRadioItem>
-    </div>
+      <Icon className="w-3.5 h-3.5 mr-1.5" style={{ color: option.color }} />
+      <span>{option.label}</span>
+    </DropdownMenuRadioItem>
   );
 });

apps/ui/src/components/views/project-settings-view/project-identity-section.tsx

@@ -68,10 +68,10 @@ export function ProjectIdentitySection({ project }: ProjectIdentitySectionProps)
       return;
     }
 
-    // Validate file size (max 2MB for icons)
-    if (file.size > 2 * 1024 * 1024) {
+    // Validate file size (max 5MB for icons - allows animated GIFs)
+    if (file.size > 5 * 1024 * 1024) {
       toast.error('File too large', {
-        description: 'Please upload an image smaller than 2MB.',
+        description: 'Please upload an image smaller than 5MB.',
       });
       return;
     }
@@ -208,7 +208,7 @@ export function ProjectIdentitySection({ project }: ProjectIdentitySectionProps)
                   {isUploadingIcon ? 'Uploading...' : 'Upload Custom Icon'}
                 </Button>
                 <p className="text-xs text-muted-foreground mt-1">
-                  PNG, JPG, GIF or WebP. Max 2MB.
+                  PNG, JPG, GIF or WebP. Max 5MB.
                 </p>
               </div>
             </div>

apps/ui/src/components/views/settings-view/event-hooks/event-history-view.tsx

@@ -19,6 +19,7 @@ import type { StoredEventSummary, StoredEvent, EventHookTrigger } from '@automak
 import { EVENT_HOOK_TRIGGER_LABELS } from '@automaker/types';
 import { getHttpApiClient } from '@/lib/http-api-client';
 import { ConfirmDialog } from '@/components/ui/confirm-dialog';
+import { toast } from 'sonner';
 
 export function EventHistoryView() {
   const currentProject = useAppStore((state) => state.currentProject);
@@ -85,16 +86,18 @@ export function EventHistoryView() {
         const failCount = hookResults.filter((r) => !r.success).length;
 
         if (hooksTriggered === 0) {
-          alert('No matching hooks found for this event trigger.');
+          toast.info('No matching hooks found for this event trigger.');
         } else if (failCount === 0) {
-          alert(`Successfully ran ${successCount} hook(s).`);
+          toast.success(`Successfully ran ${successCount} hook(s).`);
         } else {
-          alert(`Ran ${hooksTriggered} hook(s): ${successCount} succeeded, ${failCount} failed.`);
+          toast.warning(
+            `Ran ${hooksTriggered} hook(s): ${successCount} succeeded, ${failCount} failed.`
+          );
         }
       }
     } catch (error) {
       console.error('Failed to replay event:', error);
-      alert('Failed to replay event. Check console for details.');
+      toast.error('Failed to replay event. Check console for details.');
     } finally {
       setReplayingEvent(null);
     }

apps/ui/src/lib/http-api-client.ts

@@ -946,7 +946,7 @@ export class HttpApiClient implements ElectronAPI {
     return response.json();
   }
 
-  private async get<T>(endpoint: string): Promise<T> {
+  async get<T>(endpoint: string): Promise<T> {
     // Ensure API key is initialized before making request
     await waitForApiKeyInit();
     const response = await fetch(`${this.serverUrl}${endpoint}`, {
@@ -976,7 +976,7 @@ export class HttpApiClient implements ElectronAPI {
     return response.json();
   }
 
-  private async put<T>(endpoint: string, body?: unknown): Promise<T> {
+  async put<T>(endpoint: string, body?: unknown): Promise<T> {
     // Ensure API key is initialized before making request
     await waitForApiKeyInit();
     const response = await fetch(`${this.serverUrl}${endpoint}`, {

apps/ui/src/store/app-store.ts

@@ -1,7 +1,7 @@
 import { create } from 'zustand';
 // Note: persist middleware removed - settings now sync via API (use-settings-sync.ts)
 import type { Project, TrashedProject } from '@/lib/electron';
-import { getElectronAPI } from '@/lib/electron';
+import { saveProjects, saveTrashedProjects } from '@/lib/electron';
 import { getHttpApiClient } from '@/lib/http-api-client';
 import { createLogger } from '@automaker/utils/logger';
 // Note: setItem/getItem moved to ./utils/theme-utils.ts
@@ -60,6 +60,8 @@ import {
   type ShortcutKey,
   type KeyboardShortcuts,
   type BackgroundSettings,
+  type UISliceState,
+  type UISliceActions,
   // Settings types
   type ApiKeys,
   // Chat types
@@ -109,16 +111,13 @@ import {
 } from './utils';
 
 // Import default values from modular defaults files
-import { defaultBackgroundSettings, defaultTerminalState, MAX_INIT_OUTPUT_LINES } from './defaults';
+import { defaultTerminalState, MAX_INIT_OUTPUT_LINES } from './defaults';
+
+// Import UI slice
+import { createUISlice, initialUIState } from './slices';
 
 // Import internal theme utils (not re-exported publicly)
-import {
-  getEffectiveFont,
-  saveThemeToStorage,
-  saveFontSansToStorage,
-  saveFontMonoToStorage,
-  persistEffectiveThemeForProject,
-} from './utils/theme-utils';
+import { persistEffectiveThemeForProject } from './utils/theme-utils';
 
 const logger = createLogger('AppStore');
 const OPENCODE_BEDROCK_PROVIDER_ID = 'amazon-bedrock';
@@ -146,6 +145,8 @@ export type {
   ShortcutKey,
   KeyboardShortcuts,
   BackgroundSettings,
+  UISliceState,
+  UISliceActions,
   ApiKeys,
   ImageAttachment,
   TextFileAttachment,
@@ -213,56 +214,72 @@ export { defaultBackgroundSettings, defaultTerminalState, MAX_INIT_OUTPUT_LINES
 // - defaultTerminalState (./defaults/terminal-defaults.ts)
 
 const initialState: AppState = {
+  // Spread UI slice state first
+  ...initialUIState,
+
+  // Project state
   projects: [],
   currentProject: null,
   trashedProjects: [],
   projectHistory: [],
   projectHistoryIndex: -1,
-  currentView: 'welcome',
-  sidebarOpen: true,
-  sidebarStyle: 'unified',
-  collapsedNavSections: {},
-  mobileSidebarHidden: false,
+
+  // Agent Session state
   lastSelectedSessionByProject: {},
-  theme: getStoredTheme() || 'dark',
-  fontFamilySans: getStoredFontSans(),
-  fontFamilyMono: getStoredFontMono(),
+
+  // Features/Kanban
   features: [],
+
+  // App spec
   appSpec: '',
+
+  // IPC status
   ipcConnected: false,
+
+  // API Keys
   apiKeys: {
     anthropic: '',
     google: '',
     openai: '',
   },
+
+  // Chat Sessions
   chatSessions: [],
   currentChatSession: null,
-  chatHistoryOpen: false,
+
+  // Auto Mode
   autoModeByWorktree: {},
   autoModeActivityLog: [],
   maxConcurrency: DEFAULT_MAX_CONCURRENCY,
-  boardViewMode: 'kanban',
+
+  // Feature Default Settings
   defaultSkipTests: true,
   enableDependencyBlocking: true,
   skipVerificationInAutoMode: false,
   enableAiCommitMessages: true,
   planUseSelectedWorktreeBranch: true,
   addFeatureUseSelectedWorktreeBranch: false,
+
+  // Worktree Settings
   useWorktrees: true,
   currentWorktreeByProject: {},
   worktreesByProject: {},
-  keyboardShortcuts: DEFAULT_KEYBOARD_SHORTCUTS,
-  muteDoneSound: false,
-  disableSplashScreen: false,
+
+  // Server Settings
   serverLogLevel: 'info',
   enableRequestLogging: true,
-  showQueryDevtools: true,
+
+  // Model Settings
   enhancementModel: 'claude-sonnet',
   validationModel: 'claude-opus',
   phaseModels: DEFAULT_PHASE_MODELS,
   favoriteModels: [],
+
+  // Cursor CLI Settings
   enabledCursorModels: getAllCursorModelIds(),
   cursorDefaultModel: 'cursor-auto',
+
+  // Codex CLI Settings
   enabledCodexModels: getAllCodexModelIds(),
   codexDefaultModel: 'codex-gpt-5.2-codex',
   codexAutoLoadAgents: false,
@@ -270,6 +287,8 @@ const initialState: AppState = {
   codexApprovalPolicy: 'on-request',
   codexEnableWebSearch: false,
   codexEnableImages: false,
+
+  // OpenCode CLI Settings
   enabledOpencodeModels: getAllOpencodeModelIds(),
   opencodeDefaultModel: DEFAULT_OPENCODE_MODEL,
   dynamicOpencodeModels: [],
@@ -279,61 +298,101 @@ const initialState: AppState = {
   opencodeModelsError: null,
   opencodeModelsLastFetched: null,
   opencodeModelsLastFailedAt: null,
+
+  // Gemini CLI Settings
   enabledGeminiModels: getAllGeminiModelIds(),
   geminiDefaultModel: DEFAULT_GEMINI_MODEL,
+
+  // Copilot SDK Settings
   enabledCopilotModels: getAllCopilotModelIds(),
   copilotDefaultModel: DEFAULT_COPILOT_MODEL,
+
+  // Provider Settings
   disabledProviders: [],
+
+  // Claude Agent SDK Settings
   autoLoadClaudeMd: false,
   skipSandboxWarning: false,
+
+  // MCP Servers
   mcpServers: [],
+
+  // Editor Configuration
   defaultEditorCommand: null,
+
+  // Terminal Configuration
   defaultTerminalId: null,
+
+  // Skills Configuration
   enableSkills: true,
   skillsSources: ['user', 'project'] as Array<'user' | 'project'>,
+
+  // Subagents Configuration
   enableSubagents: true,
   subagentsSources: ['user', 'project'] as Array<'user' | 'project'>,
+
+  // Prompt Customization
   promptCustomization: {},
+
+  // Event Hooks
   eventHooks: [],
+
+  // Claude-Compatible Providers
   claudeCompatibleProviders: [],
   claudeApiProfiles: [],
   activeClaudeApiProfileId: null,
+
+  // Project Analysis
   projectAnalysis: null,
   isAnalyzing: false,
-  boardBackgroundByProject: {},
-  previewTheme: null,
+
+  // Terminal state
   terminalState: defaultTerminalState,
   terminalLayoutByProject: {},
+
+  // Spec Creation
   specCreatingForProject: null,
+
+  // Planning
   defaultPlanningMode: 'skip' as PlanningMode,
   defaultRequirePlanApproval: false,
   defaultFeatureModel: DEFAULT_GLOBAL_SETTINGS.defaultFeatureModel,
   pendingPlanApproval: null,
+
+  // Claude Usage Tracking
   claudeRefreshInterval: 60,
   claudeUsage: null,
   claudeUsageLastUpdated: null,
+
+  // Codex Usage Tracking
   codexUsage: null,
   codexUsageLastUpdated: null,
+
+  // Codex Models
   codexModels: [],
   codexModelsLoading: false,
   codexModelsError: null,
   codexModelsLastFetched: null,
   codexModelsLastFailedAt: null,
+
+  // Pipeline Configuration
   pipelineConfigByProject: {},
-  worktreePanelVisibleByProject: {},
-  showInitScriptIndicatorByProject: {},
+
+  // Project-specific Worktree Settings
   defaultDeleteBranchByProject: {},
-  autoDismissInitScriptIndicatorByProject: {},
   useWorktreesByProject: {},
-  worktreePanelCollapsed: false,
-  lastProjectDir: '',
-  recentFolders: [],
+
+  // Init Script State
   initScriptState: {},
 };
 
-export const useAppStore = create<AppState & AppActions>()((set, get) => ({
+export const useAppStore = create<AppState & AppActions>()((set, get, store) => ({
+  // Spread initial non-UI state
   ...initialState,
 
+  // Spread UI slice (includes UI state and actions)
+  ...createUISlice(set, get, store),
+
   // Project actions
   setProjects: (projects) => set({ projects }),
 
@@ -360,7 +419,7 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
 
     const trashedProject: TrashedProject = {
       ...project,
-      trashedAt: Date.now(),
+      trashedAt: new Date().toISOString(),
     };
 
     set((state) => ({
@@ -369,12 +428,9 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
       currentProject: state.currentProject?.id === projectId ? null : state.currentProject,
     }));
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-      electronAPI.projects.setTrashedProjects(get().trashedProjects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
+    saveTrashedProjects(get().trashedProjects);
   },
 
   restoreTrashedProject: (projectId: string) => {
@@ -390,12 +446,9 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
       trashedProjects: state.trashedProjects.filter((p) => p.id !== projectId),
     }));
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-      electronAPI.projects.setTrashedProjects(get().trashedProjects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
+    saveTrashedProjects(get().trashedProjects);
   },
 
   deleteTrashedProject: (projectId: string) => {
@@ -403,21 +456,15 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
       trashedProjects: state.trashedProjects.filter((p) => p.id !== projectId),
     }));
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setTrashedProjects(get().trashedProjects);
-    }
+    // Persist to storage
+    saveTrashedProjects(get().trashedProjects);
   },
 
   emptyTrash: () => {
     set({ trashedProjects: [] });
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setTrashedProjects([]);
-    }
+    // Persist to storage
+    saveTrashedProjects([]);
   },
 
   setCurrentProject: (project) => {
@@ -474,14 +521,10 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
     get().addProject(newProject);
     get().setCurrentProject(newProject);
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      // Small delay to ensure state is updated before persisting
-      setTimeout(() => {
-        electronAPI.projects.setProjects(get().projects);
-      }, 0);
-    }
+    // Persist to storage (small delay to ensure state is updated)
+    setTimeout(() => {
+      saveProjects(get().projects);
+    }, 0);
 
     return newProject;
   },
@@ -564,11 +607,8 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
       ),
     }));
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
   },
 
   setProjectIcon: (projectId: string, icon: string | null) => {
@@ -576,27 +616,31 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
       projects: state.projects.map((p) =>
         p.id === projectId ? { ...p, icon: icon ?? undefined } : p
       ),
+      // Also update currentProject if it's the one being modified
+      currentProject:
+        state.currentProject?.id === projectId
+          ? { ...state.currentProject, icon: icon ?? undefined }
+          : state.currentProject,
     }));
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
   },
 
   setProjectCustomIcon: (projectId: string, customIconPath: string | null) => {
     set((state) => ({
       projects: state.projects.map((p) =>
-        p.id === projectId ? { ...p, customIcon: customIconPath ?? undefined } : p
+        p.id === projectId ? { ...p, customIconPath: customIconPath ?? undefined } : p
       ),
+      // Also update currentProject if it's the one being modified
+      currentProject:
+        state.currentProject?.id === projectId
+          ? { ...state.currentProject, customIconPath: customIconPath ?? undefined }
+          : state.currentProject,
     }));
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
   },
 
   setProjectName: (projectId: string, name: string) => {
@@ -609,35 +653,13 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
           : state.currentProject,
     }));
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
   },
 
-  // View actions
-  setCurrentView: (view) => set({ currentView: view }),
-  toggleSidebar: () => set((state) => ({ sidebarOpen: !state.sidebarOpen })),
-  setSidebarOpen: (open) => set({ sidebarOpen: open }),
-  setSidebarStyle: (style) => set({ sidebarStyle: style }),
-  setCollapsedNavSections: (sections) => set({ collapsedNavSections: sections }),
-  toggleNavSection: (sectionLabel) =>
-    set((state) => ({
-      collapsedNavSections: {
-        ...state.collapsedNavSections,
-        [sectionLabel]: !state.collapsedNavSections[sectionLabel],
-      },
-    })),
-  toggleMobileSidebarHidden: () =>
-    set((state) => ({ mobileSidebarHidden: !state.mobileSidebarHidden })),
-  setMobileSidebarHidden: (hidden) => set({ mobileSidebarHidden: hidden }),
+  // View actions - provided by UI slice
 
-  // Theme actions
-  setTheme: (theme) => {
-    set({ theme });
-    saveThemeToStorage(theme);
-  },
+  // Theme actions (setTheme, getEffectiveTheme, setPreviewTheme provided by UI slice)
   setProjectTheme: (projectId: string, theme: ThemeMode | null) => {
     set((state) => ({
       projects: state.projects.map((p) =>
@@ -659,76 +681,40 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
       );
     }
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
   },
-  getEffectiveTheme: () => {
-    const state = get();
-    // If there's a preview theme, use it (for hover preview)
-    if (state.previewTheme) return state.previewTheme;
-    // Otherwise, use project theme if set, or fall back to global theme
-    const projectTheme = state.currentProject?.theme as ThemeMode | undefined;
-    return projectTheme ?? state.theme;
-  },
-  setPreviewTheme: (theme) => set({ previewTheme: theme }),
 
-  // Font actions
-  setFontSans: (fontFamily) => {
-    set({ fontFamilySans: fontFamily });
-    saveFontSansToStorage(fontFamily);
-  },
-  setFontMono: (fontFamily) => {
-    set({ fontFamilyMono: fontFamily });
-    saveFontMonoToStorage(fontFamily);
-  },
+  // Font actions (setFontSans, setFontMono, getEffectiveFontSans, getEffectiveFontMono provided by UI slice)
   setProjectFontSans: (projectId: string, fontFamily: string | null) => {
     set((state) => ({
       projects: state.projects.map((p) =>
-        p.id === projectId ? { ...p, fontSans: fontFamily ?? undefined } : p
+        p.id === projectId ? { ...p, fontFamilySans: fontFamily ?? undefined } : p
       ),
       // Also update currentProject if it's the one being changed
       currentProject:
         state.currentProject?.id === projectId
-          ? { ...state.currentProject, fontSans: fontFamily ?? undefined }
+          ? { ...state.currentProject, fontFamilySans: fontFamily ?? undefined }
           : state.currentProject,
     }));
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
   },
   setProjectFontMono: (projectId: string, fontFamily: string | null) => {
     set((state) => ({
       projects: state.projects.map((p) =>
-        p.id === projectId ? { ...p, fontMono: fontFamily ?? undefined } : p
+        p.id === projectId ? { ...p, fontFamilyMono: fontFamily ?? undefined } : p
       ),
       // Also update currentProject if it's the one being changed
       currentProject:
         state.currentProject?.id === projectId
-          ? { ...state.currentProject, fontMono: fontFamily ?? undefined }
+          ? { ...state.currentProject, fontFamilyMono: fontFamily ?? undefined }
           : state.currentProject,
     }));
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-    }
-  },
-  getEffectiveFontSans: () => {
-    const state = get();
-    const projectFont = state.currentProject?.fontSans;
-    return getEffectiveFont(projectFont, state.fontFamilySans, UI_SANS_FONT_OPTIONS);
-  },
-  getEffectiveFontMono: () => {
-    const state = get();
-    const projectFont = state.currentProject?.fontMono;
-    return getEffectiveFont(projectFont, state.fontFamilyMono, UI_MONO_FONT_OPTIONS);
+    // Persist to storage
+    saveProjects(get().projects);
   },
 
   // Claude API Profile actions (per-project override)
@@ -744,11 +730,8 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
           : state.currentProject,
     }));
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
   },
 
   // Project Phase Model Overrides
@@ -781,11 +764,8 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
       };
     });
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
   },
 
   clearAllProjectPhaseModelOverrides: (projectId: string) => {
@@ -804,11 +784,8 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
       };
     });
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
   },
 
   // Project Default Feature Model Override
@@ -830,11 +807,8 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
       };
     });
 
-    // Persist to Electron store if available
-    const electronAPI = getElectronAPI();
-    if (electronAPI) {
-      electronAPI.projects.setProjects(get().projects);
-    }
+    // Persist to storage
+    saveProjects(get().projects);
   },
 
   // Feature actions
@@ -845,7 +819,7 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
     })),
   addFeature: (feature) => {
     const id = feature.id ?? `feature-${Date.now()}-${Math.random().toString(36).slice(2)}`;
-    const newFeature: Feature = { ...feature, id };
+    const newFeature = { ...feature, id } as Feature;
     set((state) => ({ features: [...state.features, newFeature] }));
     return newFeature;
   },
@@ -925,8 +899,7 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
       currentChatSession:
         state.currentChatSession?.id === sessionId ? null : state.currentChatSession,
     })),
-  setChatHistoryOpen: (open) => set({ chatHistoryOpen: open }),
-  toggleChatHistory: () => set((state) => ({ chatHistoryOpen: !state.chatHistoryOpen })),
+  // setChatHistoryOpen and toggleChatHistory - provided by UI slice
 
   // Auto Mode actions (per-worktree)
   getWorktreeKey: (projectId: string, branchName: string | null) =>
@@ -1057,8 +1030,7 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
     }));
   },
 
-  // Kanban Card Settings actions
-  setBoardViewMode: (mode) => set({ boardViewMode: mode }),
+  // Kanban Card Settings actions - setBoardViewMode provided by UI slice
 
   // Feature Default Settings actions
   setDefaultSkipTests: (skip) => set({ defaultSkipTests: skip }),
@@ -1133,29 +1105,17 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
     return mainWorktree?.branch ?? null;
   },
 
-  // Keyboard Shortcuts actions
-  setKeyboardShortcut: (key, value) =>
-    set((state) => ({
-      keyboardShortcuts: { ...state.keyboardShortcuts, [key]: value },
-    })),
-  setKeyboardShortcuts: (shortcuts) =>
-    set((state) => ({
-      keyboardShortcuts: { ...state.keyboardShortcuts, ...shortcuts },
-    })),
-  resetKeyboardShortcuts: () => set({ keyboardShortcuts: DEFAULT_KEYBOARD_SHORTCUTS }),
+  // Keyboard Shortcuts actions - provided by UI slice
 
-  // Audio Settings actions
-  setMuteDoneSound: (muted) => set({ muteDoneSound: muted }),
+  // Audio Settings actions - setMuteDoneSound provided by UI slice
 
-  // Splash Screen actions
-  setDisableSplashScreen: (disabled) => set({ disableSplashScreen: disabled }),
+  // Splash Screen actions - setDisableSplashScreen provided by UI slice
 
   // Server Log Level actions
   setServerLogLevel: (level) => set({ serverLogLevel: level }),
   setEnableRequestLogging: (enabled) => set({ enableRequestLogging: enabled }),
 
-  // Developer Tools actions
-  setShowQueryDevtools: (show) => set({ showQueryDevtools: show }),
+  // Developer Tools actions - setShowQueryDevtools provided by UI slice
 
   // Enhancement Model actions
   setEnhancementModel: (model) => set({ enhancementModel: model }),
@@ -1525,96 +1485,7 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
     })),
   getLastSelectedSession: (projectPath) => get().lastSelectedSessionByProject[projectPath] ?? null,
 
-  // Board Background actions
-  setBoardBackground: (projectPath, imagePath) =>
-    set((state) => ({
-      boardBackgroundByProject: {
-        ...state.boardBackgroundByProject,
-        [projectPath]: {
-          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
-          imagePath,
-          imageVersion: Date.now(), // Bust cache on image change
-        },
-      },
-    })),
-  setCardOpacity: (projectPath, opacity) =>
-    set((state) => ({
-      boardBackgroundByProject: {
-        ...state.boardBackgroundByProject,
-        [projectPath]: {
-          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
-          cardOpacity: opacity,
-        },
-      },
-    })),
-  setColumnOpacity: (projectPath, opacity) =>
-    set((state) => ({
-      boardBackgroundByProject: {
-        ...state.boardBackgroundByProject,
-        [projectPath]: {
-          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
-          columnOpacity: opacity,
-        },
-      },
-    })),
-  setColumnBorderEnabled: (projectPath, enabled) =>
-    set((state) => ({
-      boardBackgroundByProject: {
-        ...state.boardBackgroundByProject,
-        [projectPath]: {
-          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
-          columnBorderEnabled: enabled,
-        },
-      },
-    })),
-  getBoardBackground: (projectPath) =>
-    get().boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings,
-  setCardGlassmorphism: (projectPath, enabled) =>
-    set((state) => ({
-      boardBackgroundByProject: {
-        ...state.boardBackgroundByProject,
-        [projectPath]: {
-          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
-          cardGlassmorphism: enabled,
-        },
-      },
-    })),
-  setCardBorderEnabled: (projectPath, enabled) =>
-    set((state) => ({
-      boardBackgroundByProject: {
-        ...state.boardBackgroundByProject,
-        [projectPath]: {
-          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
-          cardBorderEnabled: enabled,
-        },
-      },
-    })),
-  setCardBorderOpacity: (projectPath, opacity) =>
-    set((state) => ({
-      boardBackgroundByProject: {
-        ...state.boardBackgroundByProject,
-        [projectPath]: {
-          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
-          cardBorderOpacity: opacity,
-        },
-      },
-    })),
-  setHideScrollbar: (projectPath, hide) =>
-    set((state) => ({
-      boardBackgroundByProject: {
-        ...state.boardBackgroundByProject,
-        [projectPath]: {
-          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
-          hideScrollbar: hide,
-        },
-      },
-    })),
-  clearBoardBackground: (projectPath) =>
-    set((state) => {
-      const newBackgrounds = { ...state.boardBackgroundByProject };
-      delete newBackgrounds[projectPath];
-      return { boardBackgroundByProject: newBackgrounds };
-    }),
+  // Board Background actions - provided by UI slice
 
   // Terminal actions
   setTerminalUnlocked: (unlocked, token) =>
@@ -2364,27 +2235,9 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
       };
     }),
 
-  // Worktree Panel Visibility actions
-  setWorktreePanelVisible: (projectPath, visible) =>
-    set((state) => ({
-      worktreePanelVisibleByProject: {
-        ...state.worktreePanelVisibleByProject,
-        [projectPath]: visible,
-      },
-    })),
-  getWorktreePanelVisible: (projectPath) =>
-    get().worktreePanelVisibleByProject[projectPath] ?? true,
+  // Worktree Panel Visibility actions - provided by UI slice
 
-  // Init Script Indicator Visibility actions
-  setShowInitScriptIndicator: (projectPath, visible) =>
-    set((state) => ({
-      showInitScriptIndicatorByProject: {
-        ...state.showInitScriptIndicatorByProject,
-        [projectPath]: visible,
-      },
-    })),
-  getShowInitScriptIndicator: (projectPath) =>
-    get().showInitScriptIndicatorByProject[projectPath] ?? true,
+  // Init Script Indicator Visibility actions - provided by UI slice
 
   // Default Delete Branch actions
   setDefaultDeleteBranch: (projectPath, deleteBranch) =>
@@ -2396,16 +2249,7 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
     })),
   getDefaultDeleteBranch: (projectPath) => get().defaultDeleteBranchByProject[projectPath] ?? false,
 
-  // Auto-dismiss Init Script Indicator actions
-  setAutoDismissInitScriptIndicator: (projectPath, autoDismiss) =>
-    set((state) => ({
-      autoDismissInitScriptIndicatorByProject: {
-        ...state.autoDismissInitScriptIndicatorByProject,
-        [projectPath]: autoDismiss,
-      },
-    })),
-  getAutoDismissInitScriptIndicator: (projectPath) =>
-    get().autoDismissInitScriptIndicatorByProject[projectPath] ?? true,
+  // Auto-dismiss Init Script Indicator actions - provided by UI slice
 
   // Use Worktrees Override actions
   setProjectUseWorktrees: (projectPath, useWorktrees) =>
@@ -2421,15 +2265,7 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
     return projectOverride !== undefined ? projectOverride : get().useWorktrees;
   },
 
-  // UI State actions
-  setWorktreePanelCollapsed: (collapsed) => set({ worktreePanelCollapsed: collapsed }),
-  setLastProjectDir: (dir) => set({ lastProjectDir: dir }),
-  setRecentFolders: (folders) => set({ recentFolders: folders }),
-  addRecentFolder: (folder) =>
-    set((state) => {
-      const filtered = state.recentFolders.filter((f) => f !== folder);
-      return { recentFolders: [folder, ...filtered].slice(0, 10) };
-    }),
+  // UI State actions - provided by UI slice
 
   // Claude Usage Tracking actions
   setClaudeRefreshInterval: (interval) => set({ claudeRefreshInterval: interval }),
@@ -2471,8 +2307,7 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
 
     try {
       const httpApi = getHttpApiClient();
-      const response = await httpApi.get('/api/codex/models');
-      const data = response.data as {
+      const data = await httpApi.get<{
         success: boolean;
         models?: Array<{
           id: string;
@@ -2484,7 +2319,7 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
           isDefault: boolean;
         }>;
         error?: string;
-      };
+      }>('/api/codex/models');
 
       if (data.success && data.models) {
         set({
@@ -2542,8 +2377,7 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
 
     try {
       const httpApi = getHttpApiClient();
-      const response = await httpApi.get('/api/opencode/models');
-      const data = response.data as {
+      const data = await httpApi.get<{
         success: boolean;
         models?: ModelDefinition[];
         providers?: Array<{
@@ -2553,7 +2387,7 @@ export const useAppStore = create<AppState & AppActions>()((set, get) => ({
           authMethod?: string;
         }>;
         error?: string;
-      };
+      }>('/api/setup/opencode/models');
 
       if (data.success && data.models) {
         // Filter out Bedrock models

apps/ui/src/store/slices/index.ts

@@ -0,0 +1 @@
+export { createUISlice, initialUIState, type UISlice } from './ui-slice';

apps/ui/src/store/slices/ui-slice.ts

@@ -0,0 +1,343 @@
+import type { StateCreator } from 'zustand';
+import { UI_SANS_FONT_OPTIONS, UI_MONO_FONT_OPTIONS } from '@/config/ui-font-options';
+import type { SidebarStyle } from '@automaker/types';
+import type {
+  ViewMode,
+  ThemeMode,
+  BoardViewMode,
+  KeyboardShortcuts,
+  BackgroundSettings,
+  UISliceState,
+  UISliceActions,
+} from '../types/ui-types';
+import type { AppState, AppActions } from '../types/state-types';
+import {
+  getStoredTheme,
+  getStoredFontSans,
+  getStoredFontMono,
+  DEFAULT_KEYBOARD_SHORTCUTS,
+} from '../utils';
+import { defaultBackgroundSettings } from '../defaults';
+import {
+  getEffectiveFont,
+  saveThemeToStorage,
+  saveFontSansToStorage,
+  saveFontMonoToStorage,
+} from '../utils/theme-utils';
+
+/**
+ * UI Slice
+ * Contains all UI-related state and actions extracted from the main app store.
+ * This is the first slice pattern implementation in the codebase.
+ */
+export type UISlice = UISliceState & UISliceActions;
+
+/**
+ * Initial UI state values
+ */
+export const initialUIState: UISliceState = {
+  // Core UI State
+  currentView: 'welcome',
+  sidebarOpen: true,
+  sidebarStyle: 'unified',
+  collapsedNavSections: {},
+  mobileSidebarHidden: false,
+
+  // Theme State
+  theme: getStoredTheme() || 'dark',
+  previewTheme: null,
+
+  // Font State
+  fontFamilySans: getStoredFontSans(),
+  fontFamilyMono: getStoredFontMono(),
+
+  // Board UI State
+  boardViewMode: 'kanban',
+  boardBackgroundByProject: {},
+
+  // Settings UI State
+  keyboardShortcuts: DEFAULT_KEYBOARD_SHORTCUTS,
+  muteDoneSound: false,
+  disableSplashScreen: false,
+  showQueryDevtools: true,
+  chatHistoryOpen: false,
+
+  // Panel Visibility State
+  worktreePanelCollapsed: false,
+  worktreePanelVisibleByProject: {},
+  showInitScriptIndicatorByProject: {},
+  autoDismissInitScriptIndicatorByProject: {},
+
+  // File Picker UI State
+  lastProjectDir: '',
+  recentFolders: [],
+};
+
+/**
+ * Creates the UI slice for the Zustand store.
+ *
+ * Uses the StateCreator pattern to allow the slice to access other parts
+ * of the combined store state (e.g., currentProject for theme resolution).
+ */
+export const createUISlice: StateCreator<AppState & AppActions, [], [], UISlice> = (set, get) => ({
+  // Spread initial state
+  ...initialUIState,
+
+  // ============================================================================
+  // View Actions
+  // ============================================================================
+
+  setCurrentView: (view: ViewMode) => set({ currentView: view }),
+
+  toggleSidebar: () => set((state) => ({ sidebarOpen: !state.sidebarOpen })),
+
+  setSidebarOpen: (open: boolean) => set({ sidebarOpen: open }),
+
+  setSidebarStyle: (style: SidebarStyle) => set({ sidebarStyle: style }),
+
+  setCollapsedNavSections: (sections: Record<string, boolean>) =>
+    set({ collapsedNavSections: sections }),
+
+  toggleNavSection: (sectionLabel: string) =>
+    set((state) => ({
+      collapsedNavSections: {
+        ...state.collapsedNavSections,
+        [sectionLabel]: !state.collapsedNavSections[sectionLabel],
+      },
+    })),
+
+  toggleMobileSidebarHidden: () =>
+    set((state) => ({ mobileSidebarHidden: !state.mobileSidebarHidden })),
+
+  setMobileSidebarHidden: (hidden: boolean) => set({ mobileSidebarHidden: hidden }),
+
+  // ============================================================================
+  // Theme Actions
+  // ============================================================================
+
+  setTheme: (theme: ThemeMode) => {
+    set({ theme });
+    saveThemeToStorage(theme);
+  },
+
+  getEffectiveTheme: (): ThemeMode => {
+    const state = get();
+    // If there's a preview theme, use it (for hover preview)
+    if (state.previewTheme) return state.previewTheme;
+    // Otherwise, use project theme if set, or fall back to global theme
+    const projectTheme = state.currentProject?.theme as ThemeMode | undefined;
+    return projectTheme ?? state.theme;
+  },
+
+  setPreviewTheme: (theme: ThemeMode | null) => set({ previewTheme: theme }),
+
+  // ============================================================================
+  // Font Actions
+  // ============================================================================
+
+  setFontSans: (fontFamily: string | null) => {
+    set({ fontFamilySans: fontFamily });
+    saveFontSansToStorage(fontFamily);
+  },
+
+  setFontMono: (fontFamily: string | null) => {
+    set({ fontFamilyMono: fontFamily });
+    saveFontMonoToStorage(fontFamily);
+  },
+
+  getEffectiveFontSans: (): string | null => {
+    const state = get();
+    const projectFont = state.currentProject?.fontFamilySans;
+    return getEffectiveFont(projectFont, state.fontFamilySans, UI_SANS_FONT_OPTIONS);
+  },
+
+  getEffectiveFontMono: (): string | null => {
+    const state = get();
+    const projectFont = state.currentProject?.fontFamilyMono;
+    return getEffectiveFont(projectFont, state.fontFamilyMono, UI_MONO_FONT_OPTIONS);
+  },
+
+  // ============================================================================
+  // Board View Actions
+  // ============================================================================
+
+  setBoardViewMode: (mode: BoardViewMode) => set({ boardViewMode: mode }),
+
+  setBoardBackground: (projectPath: string, imagePath: string | null) =>
+    set((state) => ({
+      boardBackgroundByProject: {
+        ...state.boardBackgroundByProject,
+        [projectPath]: {
+          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
+          imagePath,
+          imageVersion: Date.now(), // Bust cache on image change
+        },
+      },
+    })),
+
+  setCardOpacity: (projectPath: string, opacity: number) =>
+    set((state) => ({
+      boardBackgroundByProject: {
+        ...state.boardBackgroundByProject,
+        [projectPath]: {
+          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
+          cardOpacity: opacity,
+        },
+      },
+    })),
+
+  setColumnOpacity: (projectPath: string, opacity: number) =>
+    set((state) => ({
+      boardBackgroundByProject: {
+        ...state.boardBackgroundByProject,
+        [projectPath]: {
+          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
+          columnOpacity: opacity,
+        },
+      },
+    })),
+
+  setColumnBorderEnabled: (projectPath: string, enabled: boolean) =>
+    set((state) => ({
+      boardBackgroundByProject: {
+        ...state.boardBackgroundByProject,
+        [projectPath]: {
+          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
+          columnBorderEnabled: enabled,
+        },
+      },
+    })),
+
+  setCardGlassmorphism: (projectPath: string, enabled: boolean) =>
+    set((state) => ({
+      boardBackgroundByProject: {
+        ...state.boardBackgroundByProject,
+        [projectPath]: {
+          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
+          cardGlassmorphism: enabled,
+        },
+      },
+    })),
+
+  setCardBorderEnabled: (projectPath: string, enabled: boolean) =>
+    set((state) => ({
+      boardBackgroundByProject: {
+        ...state.boardBackgroundByProject,
+        [projectPath]: {
+          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
+          cardBorderEnabled: enabled,
+        },
+      },
+    })),
+
+  setCardBorderOpacity: (projectPath: string, opacity: number) =>
+    set((state) => ({
+      boardBackgroundByProject: {
+        ...state.boardBackgroundByProject,
+        [projectPath]: {
+          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
+          cardBorderOpacity: opacity,
+        },
+      },
+    })),
+
+  setHideScrollbar: (projectPath: string, hide: boolean) =>
+    set((state) => ({
+      boardBackgroundByProject: {
+        ...state.boardBackgroundByProject,
+        [projectPath]: {
+          ...(state.boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings),
+          hideScrollbar: hide,
+        },
+      },
+    })),
+
+  getBoardBackground: (projectPath: string): BackgroundSettings =>
+    get().boardBackgroundByProject[projectPath] ?? defaultBackgroundSettings,
+
+  clearBoardBackground: (projectPath: string) =>
+    set((state) => {
+      const newBackgrounds = { ...state.boardBackgroundByProject };
+      delete newBackgrounds[projectPath];
+      return { boardBackgroundByProject: newBackgrounds };
+    }),
+
+  // ============================================================================
+  // Settings UI Actions
+  // ============================================================================
+
+  setKeyboardShortcut: (key: keyof KeyboardShortcuts, value: string) =>
+    set((state) => ({
+      keyboardShortcuts: { ...state.keyboardShortcuts, [key]: value },
+    })),
+
+  setKeyboardShortcuts: (shortcuts: Partial<KeyboardShortcuts>) =>
+    set((state) => ({
+      keyboardShortcuts: { ...state.keyboardShortcuts, ...shortcuts },
+    })),
+
+  resetKeyboardShortcuts: () => set({ keyboardShortcuts: DEFAULT_KEYBOARD_SHORTCUTS }),
+
+  setMuteDoneSound: (muted: boolean) => set({ muteDoneSound: muted }),
+
+  setDisableSplashScreen: (disabled: boolean) => set({ disableSplashScreen: disabled }),
+
+  setShowQueryDevtools: (show: boolean) => set({ showQueryDevtools: show }),
+
+  setChatHistoryOpen: (open: boolean) => set({ chatHistoryOpen: open }),
+
+  toggleChatHistory: () => set((state) => ({ chatHistoryOpen: !state.chatHistoryOpen })),
+
+  // ============================================================================
+  // Panel Visibility Actions
+  // ============================================================================
+
+  setWorktreePanelCollapsed: (collapsed: boolean) => set({ worktreePanelCollapsed: collapsed }),
+
+  setWorktreePanelVisible: (projectPath: string, visible: boolean) =>
+    set((state) => ({
+      worktreePanelVisibleByProject: {
+        ...state.worktreePanelVisibleByProject,
+        [projectPath]: visible,
+      },
+    })),
+
+  getWorktreePanelVisible: (projectPath: string): boolean =>
+    get().worktreePanelVisibleByProject[projectPath] ?? true,
+
+  setShowInitScriptIndicator: (projectPath: string, visible: boolean) =>
+    set((state) => ({
+      showInitScriptIndicatorByProject: {
+        ...state.showInitScriptIndicatorByProject,
+        [projectPath]: visible,
+      },
+    })),
+
+  getShowInitScriptIndicator: (projectPath: string): boolean =>
+    get().showInitScriptIndicatorByProject[projectPath] ?? true,
+
+  setAutoDismissInitScriptIndicator: (projectPath: string, autoDismiss: boolean) =>
+    set((state) => ({
+      autoDismissInitScriptIndicatorByProject: {
+        ...state.autoDismissInitScriptIndicatorByProject,
+        [projectPath]: autoDismiss,
+      },
+    })),
+
+  getAutoDismissInitScriptIndicator: (projectPath: string): boolean =>
+    get().autoDismissInitScriptIndicatorByProject[projectPath] ?? true,
+
+  // ============================================================================
+  // File Picker UI Actions
+  // ============================================================================
+
+  setLastProjectDir: (dir: string) => set({ lastProjectDir: dir }),
+
+  setRecentFolders: (folders: string[]) => set({ recentFolders: folders }),
+
+  addRecentFolder: (folder: string) =>
+    set((state) => {
+      const filtered = state.recentFolders.filter((f) => f !== folder);
+      return { recentFolders: [folder, ...filtered].slice(0, 10) };
+    }),
+});

apps/ui/src/store/types/ui-types.ts

@@ -117,3 +117,112 @@ export interface KeyboardShortcuts {
   closeTerminal: string;
   newTerminalTab: string;
 }
+
+// Import SidebarStyle from @automaker/types for UI slice
+import type { SidebarStyle } from '@automaker/types';
+
+/**
+ * UI Slice State
+ * Contains all UI-related state that is extracted into the UI slice.
+ */
+export interface UISliceState {
+  // Core UI State
+  currentView: ViewMode;
+  sidebarOpen: boolean;
+  sidebarStyle: SidebarStyle;
+  collapsedNavSections: Record<string, boolean>;
+  mobileSidebarHidden: boolean;
+
+  // Theme State
+  theme: ThemeMode;
+  previewTheme: ThemeMode | null;
+
+  // Font State
+  fontFamilySans: string | null;
+  fontFamilyMono: string | null;
+
+  // Board UI State
+  boardViewMode: BoardViewMode;
+  boardBackgroundByProject: Record<string, BackgroundSettings>;
+
+  // Settings UI State
+  keyboardShortcuts: KeyboardShortcuts;
+  muteDoneSound: boolean;
+  disableSplashScreen: boolean;
+  showQueryDevtools: boolean;
+  chatHistoryOpen: boolean;
+
+  // Panel Visibility State
+  worktreePanelCollapsed: boolean;
+  worktreePanelVisibleByProject: Record<string, boolean>;
+  showInitScriptIndicatorByProject: Record<string, boolean>;
+  autoDismissInitScriptIndicatorByProject: Record<string, boolean>;
+
+  // File Picker UI State
+  lastProjectDir: string;
+  recentFolders: string[];
+}
+
+/**
+ * UI Slice Actions
+ * Contains all UI-related actions that are extracted into the UI slice.
+ */
+export interface UISliceActions {
+  // View Actions
+  setCurrentView: (view: ViewMode) => void;
+  toggleSidebar: () => void;
+  setSidebarOpen: (open: boolean) => void;
+  setSidebarStyle: (style: SidebarStyle) => void;
+  setCollapsedNavSections: (sections: Record<string, boolean>) => void;
+  toggleNavSection: (sectionLabel: string) => void;
+  toggleMobileSidebarHidden: () => void;
+  setMobileSidebarHidden: (hidden: boolean) => void;
+
+  // Theme Actions (Pure UI only - project theme actions stay in main store)
+  setTheme: (theme: ThemeMode) => void;
+  getEffectiveTheme: () => ThemeMode;
+  setPreviewTheme: (theme: ThemeMode | null) => void;
+
+  // Font Actions (Pure UI only - project font actions stay in main store)
+  setFontSans: (fontFamily: string | null) => void;
+  setFontMono: (fontFamily: string | null) => void;
+  getEffectiveFontSans: () => string | null;
+  getEffectiveFontMono: () => string | null;
+
+  // Board View Actions
+  setBoardViewMode: (mode: BoardViewMode) => void;
+  setBoardBackground: (projectPath: string, imagePath: string | null) => void;
+  setCardOpacity: (projectPath: string, opacity: number) => void;
+  setColumnOpacity: (projectPath: string, opacity: number) => void;
+  setColumnBorderEnabled: (projectPath: string, enabled: boolean) => void;
+  setCardGlassmorphism: (projectPath: string, enabled: boolean) => void;
+  setCardBorderEnabled: (projectPath: string, enabled: boolean) => void;
+  setCardBorderOpacity: (projectPath: string, opacity: number) => void;
+  setHideScrollbar: (projectPath: string, hide: boolean) => void;
+  getBoardBackground: (projectPath: string) => BackgroundSettings;
+  clearBoardBackground: (projectPath: string) => void;
+
+  // Settings UI Actions
+  setKeyboardShortcut: (key: keyof KeyboardShortcuts, value: string) => void;
+  setKeyboardShortcuts: (shortcuts: Partial<KeyboardShortcuts>) => void;
+  resetKeyboardShortcuts: () => void;
+  setMuteDoneSound: (muted: boolean) => void;
+  setDisableSplashScreen: (disabled: boolean) => void;
+  setShowQueryDevtools: (show: boolean) => void;
+  setChatHistoryOpen: (open: boolean) => void;
+  toggleChatHistory: () => void;
+
+  // Panel Visibility Actions
+  setWorktreePanelCollapsed: (collapsed: boolean) => void;
+  setWorktreePanelVisible: (projectPath: string, visible: boolean) => void;
+  getWorktreePanelVisible: (projectPath: string) => boolean;
+  setShowInitScriptIndicator: (projectPath: string, visible: boolean) => void;
+  getShowInitScriptIndicator: (projectPath: string) => boolean;
+  setAutoDismissInitScriptIndicator: (projectPath: string, autoDismiss: boolean) => void;
+  getAutoDismissInitScriptIndicator: (projectPath: string) => boolean;
+
+  // File Picker UI Actions
+  setLastProjectDir: (dir: string) => void;
+  setRecentFolders: (folders: string[]) => void;
+  addRecentFolder: (folder: string) => void;
+}

libs/prompts/src/defaults.ts

@@ -965,8 +965,20 @@ export const DEFAULT_PLAN_REVISION_TEMPLATE = `The user has requested revisions
 
 ## Instructions
 Please regenerate the specification incorporating the user's feedback.
-Keep the same format with the \`\`\`tasks block for task definitions.
-After generating the revised spec, output:
+**Current planning mode: {{planningMode}}**
+
+**CRITICAL REQUIREMENT**: Your revised specification MUST include a \`\`\`tasks code block containing task definitions in the EXACT format shown below. This is MANDATORY - without the tasks block, the system cannot track or execute tasks properly.
+
+### Required Task Format
+{{taskFormatExample}}
+
+**IMPORTANT**:
+1. The \`\`\`tasks block must appear in your response
+2. Each task MUST start with "- [ ] T###:" where ### is a sequential number (T001, T002, T003, etc.)
+3. Each task MUST include "| File:" followed by the primary file path
+4. Tasks should be ordered by dependencies (foundational tasks first)
+
+After generating the revised spec with the tasks block, output:
 "[SPEC_GENERATED] Please review the revised specification above."`;
 
 export const DEFAULT_CONTINUATION_AFTER_APPROVAL_TEMPLATE = `The plan/specification has been approved. Now implement it.