fix: glassmorphism actually visible + ESLint import/order

Glassmorphism root cause (from audit): the body-background useEffect
had `lotusTerminal && chatBackground === 'none' ? 'tactical'` as the
fallback guard — meaning the tactical grid only appeared when Lotus
Terminal mode was active. With default settings (TDS off, no chat
background chosen), the body got no background at all, so
backdrop-filter had a flat solid colour to blur — identical to unblurred.
Fix: drop the `lotusTerminal &&` guard so the tactical dot-grid is
always the fallback when chatBackground is 'none', regardless of theme.
Glassmorphism is now visible in all themes without any additional setup.

ESLint: RoomProfile.tsx had `../../../components/emoji-board` imported
before `matrix-js-sdk` violating import/order. Moved it after.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/pages/client/SidebarNav.tsx

@@ -48,7 +48,7 @@ export function SidebarNav() {
       style.removeProperty('animation');
       return;
     }
-    const effectiveBg = lotusTerminal && chatBackground === 'none' ? 'tactical' : chatBackground;
+    const effectiveBg = chatBackground === 'none' ? 'tactical' : chatBackground;
     const bgStyle = getChatBg(effectiveBg, isDark, pauseAnimations);
     style.backgroundImage = (bgStyle.backgroundImage as string | undefined) ?? '';
     style.backgroundColor = (bgStyle.backgroundColor as string | undefined) ?? '';