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/devtools-api/lib/esm/env.js

@@ -0,0 +1,12 @@
+export function getDevtoolsGlobalHook() {
+    return getTarget().__VUE_DEVTOOLS_GLOBAL_HOOK__;
+}
+export function getTarget() {
+    // @ts-expect-error navigator and windows are not available in all environments
+    return (typeof navigator !== 'undefined' && typeof window !== 'undefined')
+        ? window
+        : typeof globalThis !== 'undefined'
+            ? globalThis
+            : {};
+}
+export const isProxyAvailable = typeof Proxy === 'function';