agregar tablas epics y user_stories con relacion + Rust commands + frontend bridge

src/services/tauri-db.ts

@@ -10,6 +10,39 @@ export interface ProjectRecord {
   end_date: string | null
 }
 
+export interface EpicRecord {
+  id: number
+  initiative_id: number
+  code: string | null
+  name: string
+  description: string | null
+  status: string | null
+  client_taker: number | null
+  stimated_start_date: string | null
+  stimated_end_date: string | null
+  start_date: string | null
+  end_date: string | null
+  created_at: string | null
+  updated_at: string | null
+}
+
+export interface UserStoryRecord {
+  id: number
+  initiative_id: number
+  epic_id: number | null
+  code: string | null
+  title: string
+  description: string | null
+  acceptance_criteria: string | null
+  status: string | null
+  priority: string | null
+  story_points: number | null
+  estimated_hours: number | null
+  actual_hours: number | null
+  assigned_to: number | null
+  created_at: string | null
+}
+
 export interface WorkItemRecord {
   id: number
   project_id: number
@@ -113,6 +146,28 @@ export const tauriDb = {
     return invoke('delete_work_item', { id })
   },
 
+  // Epics
+  getEpics(initiativeId: number): Promise<EpicRecord[]> {
+    return invoke('get_epics', { initiativeId })
+  },
+  saveEpic(epic: EpicRecord): Promise<number> {
+    return invoke('save_epic', { epic })
+  },
+  deleteEpic(id: number): Promise<void> {
+    return invoke('delete_epic', { id })
+  },
+
+  // User Stories
+  getUserStories(initiativeId: number, epicId?: number): Promise<UserStoryRecord[]> {
+    return invoke('get_user_stories', { initiativeId, epicId: epicId ?? null })
+  },
+  saveUserStory(story: UserStoryRecord): Promise<number> {
+    return invoke('save_user_story', { story })
+  },
+  deleteUserStory(id: number): Promise<void> {
+    return invoke('delete_user_story', { id })
+  },
+
   // Users
   getUsers(): Promise<AlphaUserRecord[]> {
     return invoke('get_users')