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/jsx.d.ts

@@ -0,0 +1,22 @@
+/* eslint-disable @typescript-eslint/ban-ts-comment */
+// global JSX namespace registration
+// somehow we have to copy=pase the jsx-runtime types here to make TypeScript happy
+import type { NativeElements, ReservedProps, VNode } from '@vue/runtime-dom'
+
+declare global {
+  namespace JSX {
+    export interface Element extends VNode {}
+    export interface ElementClass {
+      $props: {}
+    }
+    export interface ElementAttributesProperty {
+      $props: {}
+    }
+    export interface IntrinsicElements extends NativeElements {
+      // allow arbitrary elements
+      // @ts-ignore suppress ts:2374 = Duplicate string index signature.
+      [name: string]: any
+    }
+    export interface IntrinsicAttributes extends ReservedProps {}
+  }
+}