feat: implement Phase 2 Core features for AutoScheduler GTD System

- ConnectWise Manage Integration:
  - ConnectWiseModule with service, controller, entity
  - API endpoints for connection CRUD and sync
  - Syncs service tickets, project tickets, zero-ticket projects
  - Stores ConnectWise priority/SLA in task metadata

- Intelligent Calendar Scheduling:
  - CalendarModule with connection and event entities
  - Support for CalDAV, Microsoft Graph, Google Calendar providers
  - CalendarService with sync methods for all providers
  - SchedulingModule with automatic scheduling engine
  - Finds available slots respecting working hours
  - Groups tasks by context, respects priority and due dates

- Interactive Calendar Week View:
  - FullCalendar with timeGridWeek view
  - Drag-and-drop task rescheduling
  - Tasks auto-lock when manually moved
  - Color-coded by context
  - Regenerate Schedule button

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

packages/shared-types/src/index.ts

@@ -227,6 +227,71 @@ export interface ProjectResponseDto {
   updatedAt: string;
 }
 
+// DTOs - ConnectWise Connection
+export interface CreateConnectWiseConnectionDto {
+  companyId: string;
+  publicKey: string;
+  privateKey: string;
+  apiUrl: string;
+  memberId: string;
+}
+
+export interface ConnectWiseConnectionResponseDto {
+  id: string;
+  companyId: string;
+  apiUrl: string;
+  memberId: string;
+  lastSync?: string;
+  createdAt: string;
+  updatedAt: string;
+}
+
+// DTOs - Calendar Connection
+export enum CalendarProvider {
+  CALDAV = 'CALDAV',
+  MICROSOFT_GRAPH = 'MICROSOFT_GRAPH',
+  GOOGLE = 'GOOGLE',
+}
+
+export interface CreateCalendarConnectionDto {
+  provider: CalendarProvider;
+  calendarUrl?: string;
+  credentials?: {
+    username?: string;
+    password?: string;
+    accessToken?: string;
+    refreshToken?: string;
+  };
+}
+
+export interface CalendarConnectionResponseDto {
+  id: string;
+  provider: CalendarProvider;
+  calendarUrl?: string;
+  lastSync?: string;
+  createdAt: string;
+  updatedAt: string;
+}
+
+// DTOs - Calendar Events
+export interface CalendarEventResponseDto {
+  id: string;
+  externalId: string;
+  title: string;
+  startTime: string;
+  endTime: string;
+  isAllDay: boolean;
+  source: CalendarProvider;
+  createdAt: string;
+  updatedAt: string;
+}
+
+// DTOs - Schedule
+export interface ScheduleRegenerateResponseDto {
+  scheduledCount: number;
+  tasks: TaskResponseDto[];
+}
+
 // Health check
 export interface HealthCheckResponseDto {
   status: 'ok' | 'error';