feat(midsummer): retire the theme out of season (holiday over)

Flip the seasonal master switch (SEASON_ACTIVE=false in useMidsummer) so the
Sma Grodorna theme is fully dormant — no rain/frogs/maypole/banner/palette,
regardless of any stored toggle preference — and remove the 🐸 toggle from the
sidebar. All theme code is kept; to bring it back next Midsummer, flip
SEASON_ACTIVE to true and re-add <FrogToggle /> in SidebarWindowButtons.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

static/assets/CombatPickerWindow-Lt_IPIlM.js

@@ -0,0 +1 @@
+import{u as c,j as r,D as d}from"./index-CzmmaXYG.js";import"./react-yfL0ty4i.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};