feat: add TypeScript types, API client, and TanStack Query hooks

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

TaskTracker.Web/src/types/index.ts

@@ -0,0 +1,71 @@
+export const WorkTaskStatus = {
+  Pending: 0,
+  Active: 1,
+  Paused: 2,
+  Completed: 3,
+  Abandoned: 4,
+} as const
+export type WorkTaskStatus = (typeof WorkTaskStatus)[keyof typeof WorkTaskStatus]
+
+export const NoteType = {
+  PauseNote: 0,
+  ResumeNote: 1,
+  General: 2,
+} as const
+export type NoteType = (typeof NoteType)[keyof typeof NoteType]
+
+export interface WorkTask {
+  id: number
+  title: string
+  description: string | null
+  status: WorkTaskStatus
+  category: string | null
+  createdAt: string
+  startedAt: string | null
+  completedAt: string | null
+  estimatedMinutes: number | null
+  parentTaskId: number | null
+  subTasks: WorkTask[]
+  notes: TaskNote[]
+  contextEvents: ContextEvent[]
+}
+
+export interface TaskNote {
+  id: number
+  workTaskId: number
+  content: string
+  type: NoteType
+  createdAt: string
+}
+
+export interface ContextEvent {
+  id: number
+  workTaskId: number | null
+  source: string
+  appName: string
+  windowTitle: string
+  url: string | null
+  timestamp: string
+}
+
+export interface AppMapping {
+  id: number
+  pattern: string
+  matchType: string
+  category: string
+  friendlyName: string | null
+}
+
+export interface ContextSummaryItem {
+  appName: string
+  category: string
+  eventCount: number
+  firstSeen: string
+  lastSeen: string
+}
+
+export interface ApiResponse<T> {
+  success: boolean
+  data: T
+  error: string | null
+}