feat: v2 React frontend is now primary at /

- v1 vanilla JS frontend moved to /classic (static/classic/)
- v2 React app now serves at / (root)
- Vite base changed from /v2/ to /
- Assets at /assets/, service worker at /sw.js
- /classic still works — all v1 files preserved with relative paths
- /v2 still works as before (build output unchanged)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

static/assets/CombatPickerWindow-CLkjJTHh.js

@@ -0,0 +1 @@
+import{u as c,j as r,D as d}from"./index-DnlpBAAU.js";import"./react-DlyoauG8.js";const p=({id:n,zIndex:i,characters:a})=>{const{openWindow:s}=c(),e=Array.from(a.keys()).sort();return r.jsx(d,{id:n,title:"Combat Stats — Select Character",zIndex:i,width:300,height:400,children:r.jsx("div",{style:{flex:1,overflowY:"auto",padding:6},children:e.length===0?r.jsx("div",{style:{padding:12,color:"#666",textAlign:"center",fontSize:"0.8rem"},children:"No characters online"}):e.map(o=>r.jsx("div",{style:{padding:"5px 8px",cursor:"pointer",borderBottom:"1px solid #222",color:"#ccc",fontSize:"0.82rem"},onMouseEnter:t=>t.currentTarget.style.background="#2a2a2a",onMouseLeave:t=>t.currentTarget.style.background="",onClick:()=>s(`combat-${o}`,`Combat: ${o}`,o),children:o},o))})})};export{p as CombatPickerWindow};