Initial commit: Purrse personal finance app

Self-hosted, plugin-extensible personal finance manager built with
ASP.NET Core 9.0, Vue 3 + Vuetify 3, and PostgreSQL 17.

Backend (8 .NET projects):
- Core: 19 domain models, 6 enums, 14 DTOs, 12 service interfaces
- Data: EF Core DbContext, 16 entity configurations, category seeder
- API: 14 controllers, 15 services, JWT auth, SignalR, middleware
- Plugins: Abstractions + OFX/CSV/QIF file parsers
- Tests: 28 xUnit tests (fingerprinting, duplicate detection, parsers)

Frontend (Vue 3 + Vuetify 3 + TypeScript):
- 13 views, Pinia stores, Axios API services with JWT interceptors
- Dashboard, accounts, transactions, categories, imports, and more

Deployment:
- Docker Compose (PostgreSQL 17 + .NET API + nginx frontend)
- Auto-migration on startup

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

frontend/src/stores/auth.ts

@@ -0,0 +1,60 @@
+import { defineStore } from 'pinia'
+import { ref, computed } from 'vue'
+import api from '@/services/api'
+import type { AuthResponse } from '@/types'
+
+export const useAuthStore = defineStore('auth', () => {
+  const token = ref<string | null>(null)
+  const refreshTokenValue = ref<string | null>(null)
+  const username = ref<string | null>(null)
+  const expiresAt = ref<string | null>(null)
+
+  const isAuthenticated = computed(() => !!token.value)
+
+  function initialize() {
+    token.value = localStorage.getItem('purrse_token')
+    refreshTokenValue.value = localStorage.getItem('purrse_refresh_token')
+    username.value = localStorage.getItem('purrse_username')
+    expiresAt.value = localStorage.getItem('purrse_expires_at')
+  }
+
+  function setAuth(auth: AuthResponse) {
+    token.value = auth.token
+    refreshTokenValue.value = auth.refreshToken
+    username.value = auth.username
+    expiresAt.value = auth.expiresAt
+    localStorage.setItem('purrse_token', auth.token)
+    localStorage.setItem('purrse_refresh_token', auth.refreshToken)
+    localStorage.setItem('purrse_username', auth.username)
+    localStorage.setItem('purrse_expires_at', auth.expiresAt)
+  }
+
+  async function login(usernameInput: string, password: string) {
+    const { data } = await api.post<AuthResponse>('/auth/login', { username: usernameInput, password })
+    setAuth(data)
+  }
+
+  async function register(usernameInput: string, email: string, password: string) {
+    const { data } = await api.post<AuthResponse>('/auth/register', { username: usernameInput, email, password })
+    setAuth(data)
+  }
+
+  async function refreshToken() {
+    if (!refreshTokenValue.value) throw new Error('No refresh token')
+    const { data } = await api.post<AuthResponse>('/auth/refresh', { refreshToken: refreshTokenValue.value })
+    setAuth(data)
+  }
+
+  function logout() {
+    token.value = null
+    refreshTokenValue.value = null
+    username.value = null
+    expiresAt.value = null
+    localStorage.removeItem('purrse_token')
+    localStorage.removeItem('purrse_refresh_token')
+    localStorage.removeItem('purrse_username')
+    localStorage.removeItem('purrse_expires_at')
+  }
+
+  return { token, username, expiresAt, isAuthenticated, initialize, login, register, refreshToken, logout }
+})