Phase 1 MVP - Complete implementation

- Login with JWT and refresh token rotation
- Dashboard with projects cards
- ProjectView with TreeView navigation
- DocumentView with markdown editor and auto-save
- Tag management (create, assign, remove)
- Dark mode CSS variables
- Security fixes applied (logout to backend, createDocument endpoint)

node_modules/@vue/language-core/lib/plugins.d.ts

@@ -0,0 +1,3 @@
+import { VueLanguagePlugin } from './types';
+export * from './plugins/shared';
+export declare function createPlugins(pluginContext: Parameters<VueLanguagePlugin>[0]): import("./types").VueLanguagePluginReturn[];