feat: Implement worktree initialization script functionality

This commit introduces a new feature for managing worktree initialization scripts, allowing users to configure and execute scripts upon worktree creation. Key changes include:

1. **New API Endpoints**: Added endpoints for getting, setting, and deleting init scripts.
2. **Worktree Routes**: Updated worktree routes to include init script handling.
3. **Init Script Service**: Created a service to execute the init scripts asynchronously, with support for cross-platform compatibility.
4. **UI Components**: Added UI components for displaying and editing init scripts, including a dedicated section in the settings view.
5. **Event Handling**: Implemented event handling for init script execution status, providing real-time feedback in the UI.

This enhancement improves the user experience by allowing automated setup processes for new worktrees, streamlining project workflows.

apps/ui/src/components/views/settings-view/feature-defaults/feature-defaults-section.tsx

@@ -3,7 +3,6 @@ import { Checkbox } from '@/components/ui/checkbox';
 import {
   FlaskConical,
   TestTube,
-  GitBranch,
   AlertCircle,
   Zap,
   ClipboardList,
@@ -27,13 +26,11 @@ interface FeatureDefaultsSectionProps {
   defaultSkipTests: boolean;
   enableDependencyBlocking: boolean;
   skipVerificationInAutoMode: boolean;
-  useWorktrees: boolean;
   defaultPlanningMode: PlanningMode;
   defaultRequirePlanApproval: boolean;
   onDefaultSkipTestsChange: (value: boolean) => void;
   onEnableDependencyBlockingChange: (value: boolean) => void;
   onSkipVerificationInAutoModeChange: (value: boolean) => void;
-  onUseWorktreesChange: (value: boolean) => void;
   onDefaultPlanningModeChange: (value: PlanningMode) => void;
   onDefaultRequirePlanApprovalChange: (value: boolean) => void;
 }
@@ -42,13 +39,11 @@ export function FeatureDefaultsSection({
   defaultSkipTests,
   enableDependencyBlocking,
   skipVerificationInAutoMode,
-  useWorktrees,
   defaultPlanningMode,
   defaultRequirePlanApproval,
   onDefaultSkipTestsChange,
   onEnableDependencyBlockingChange,
   onSkipVerificationInAutoModeChange,
-  onUseWorktreesChange,
   onDefaultPlanningModeChange,
   onDefaultRequirePlanApprovalChange,
 }: FeatureDefaultsSectionProps) {
@@ -257,32 +252,6 @@ export function FeatureDefaultsSection({
           </div>
         </div>
 
-        {/* Separator */}
-        <div className="border-t border-border/30" />
-
-        {/* Worktree Isolation Setting */}
-        <div className="group flex items-start space-x-3 p-3 rounded-xl hover:bg-accent/30 transition-colors duration-200 -mx-3">
-          <Checkbox
-            id="use-worktrees"
-            checked={useWorktrees}
-            onCheckedChange={(checked) => onUseWorktreesChange(checked === true)}
-            className="mt-1"
-            data-testid="use-worktrees-checkbox"
-          />
-          <div className="space-y-1.5">
-            <Label
-              htmlFor="use-worktrees"
-              className="text-foreground cursor-pointer font-medium flex items-center gap-2"
-            >
-              <GitBranch className="w-4 h-4 text-brand-500" />
-              Enable Git Worktree Isolation
-            </Label>
-            <p className="text-xs text-muted-foreground/80 leading-relaxed">
-              Creates isolated git branches for each feature. When disabled, agents work directly in
-              the main project directory.
-            </p>
-          </div>
-        </div>
       </div>
     </div>
   );