feat(03-01): add git domain events to event system

- WorktreeCreatedEvent for worktree creation tracking
- WorktreeRemovedEvent for worktree cleanup tracking
- WorktreeMergedEvent for successful merge tracking
- WorktreeConflictEvent for merge conflict notification
- All events added to DomainEventMap union type

src/events/index.ts

@@ -16,6 +16,10 @@ export type {
   ServerStartedEvent,
   ServerStoppedEvent,
   LogEntryEvent,
+  WorktreeCreatedEvent,
+  WorktreeRemovedEvent,
+  WorktreeMergedEvent,
+  WorktreeConflictEvent,
   DomainEventMap,
   DomainEventType,
 } from './types.js';

src/events/types.ts

@@ -92,6 +92,46 @@ export interface LogEntryEvent extends DomainEvent {
   };
 }
 
+/**
+ * Git Worktree Events
+ */
+
+export interface WorktreeCreatedEvent extends DomainEvent {
+  type: 'worktree:created';
+  payload: {
+    worktreeId: string;
+    branch: string;
+    path: string;
+  };
+}
+
+export interface WorktreeRemovedEvent extends DomainEvent {
+  type: 'worktree:removed';
+  payload: {
+    worktreeId: string;
+    branch: string;
+  };
+}
+
+export interface WorktreeMergedEvent extends DomainEvent {
+  type: 'worktree:merged';
+  payload: {
+    worktreeId: string;
+    sourceBranch: string;
+    targetBranch: string;
+  };
+}
+
+export interface WorktreeConflictEvent extends DomainEvent {
+  type: 'worktree:conflict';
+  payload: {
+    worktreeId: string;
+    sourceBranch: string;
+    targetBranch: string;
+    conflictingFiles: string[];
+  };
+}
+
 /**
  * Union of all domain events - enables type-safe event handling
  */
@@ -101,7 +141,11 @@ export type DomainEventMap =
   | ProcessCrashedEvent
   | ServerStartedEvent
   | ServerStoppedEvent
-  | LogEntryEvent;
+  | LogEntryEvent
+  | WorktreeCreatedEvent
+  | WorktreeRemovedEvent
+  | WorktreeMergedEvent
+  | WorktreeConflictEvent;
 
 /**
  * Event type literal union for type checking