perf(ui): fix spike when medulla-perch lines up with hair-fan gestures (#281)

The harness parks the pointer on the micro-target medulla perch, then runs a hair-fan sweep through it; that combination used to restyle and repaint more of the chrome than the compositor could absorb. Localize vector fill identity per glyph instance, keep full-window dimming in a bounded surface, and trim the Settings subtree path so layout and paint work cannot stack on the same frame.

src/App.tsx

@@ -1088,7 +1088,7 @@ export default function App() {
     useGlobalShortcutsStore.getState().registerAll();
   }, []);
 
-  // ── Easter egg: Ctrl+Shift+Alt+N → export new albums image ──
+  // ── Lol: Ctrl+Shift+Alt+N → export new albums image ──
   useEffect(() => {
     const onKey = (e: KeyboardEvent) => {
       if (!e.ctrlKey || !e.shiftKey || !e.altKey || e.code !== 'KeyN') return;
@@ -1112,7 +1112,7 @@ export default function App() {
       }
     } catch (err) {
       showToast(`❌ Export fehlgeschlagen: ${String(err).slice(0, 80)}`);
-      console.error('[easter egg] export failed:', err);
+      console.error('[lol] export failed:', err);
     }
   };
 

src/components/AboutPsysonicLol.tsx

@@ -0,0 +1,160 @@
+import React, { useCallback, useEffect, useState } from 'react';
+import { createPortal } from 'react-dom';
+import { X } from 'lucide-react';
+import { open as openUrl } from '@tauri-apps/plugin-shell';
+import PsysonicLogo from './PsysonicLogo';
+
+const TAPS_TO_REVEAL_HINT = 10;
+const TARGET_CLICKS_IN_WINDOW = 100;
+const WINDOW_MS = 60_000;
+
+/** Hardcoded About lol copy — intentionally not in locale files. */
+const MSG_HINT =
+  'To become a developer, you need to click the Psysonic logo 100 times within one minute.';
+
+const MSG_CONGRATS_TITLE = 'Congratulations.';
+const MSG_CONGRATS_SIGN_OFF = 'Sincerely, your maintainers.';
+const MSG_CONGRATS_PS = "PS: Don't forget to star the repo! ★";
+
+/**
+ * About page brand row + Settings → System → About lol (logo taps + modal).
+ * Modal copy is English and hardcoded by design.
+ */
+export function AboutPsysonicBrandHeader({
+  appVersion,
+  aboutVersionLabel,
+}: {
+  appVersion: string;
+  aboutVersionLabel: string;
+}) {
+  const [phase, setPhase] = useState<'idle' | 'hint' | 'done'>('idle');
+  const [idleTaps, setIdleTaps] = useState(0);
+  const [hintTimestamps, setHintTimestamps] = useState<number[]>([]);
+  const [overlayOpen, setOverlayOpen] = useState(false);
+
+  const onLogoClick = useCallback(() => {
+    if (phase === 'done') return;
+
+    if (phase === 'idle') {
+      setIdleTaps(prev => {
+        const next = prev + 1;
+        if (next >= TAPS_TO_REVEAL_HINT) queueMicrotask(() => setPhase('hint'));
+        return next;
+      });
+      return;
+    }
+
+    if (phase === 'hint') {
+      const now = Date.now();
+      setHintTimestamps(prev => {
+        const inWindow = prev.filter(t => t > now - WINDOW_MS);
+        const nextTimes = [...inWindow, now];
+        if (nextTimes.length >= TARGET_CLICKS_IN_WINDOW) {
+          queueMicrotask(() => {
+            setPhase('done');
+            setOverlayOpen(true);
+          });
+        }
+        return nextTimes;
+      });
+    }
+  }, [phase]);
+
+  const closeOverlay = useCallback(() => setOverlayOpen(false), []);
+
+  useEffect(() => {
+    if (!overlayOpen) return;
+    const prevOverflow = document.body.style.overflow;
+    document.body.style.overflow = 'hidden';
+    return () => {
+      document.body.style.overflow = prevOverflow;
+    };
+  }, [overlayOpen]);
+
+  return (
+    <>
+      <div className="settings-about-header">
+        <button
+          type="button"
+          onClick={onLogoClick}
+          className="about-psysonic-logo-lol-hit"
+          aria-label="Psysonic"
+        >
+          <img src="/logo-psysonic.png" width={52} height={52} alt="" decoding="async" style={{ borderRadius: 14, display: 'block' }} />
+        </button>
+        <div>
+          <div style={{ fontFamily: 'var(--font-display)', fontSize: '1.25rem', fontWeight: 700, color: 'var(--text-primary)' }}>
+            Psysonic
+          </div>
+          <div style={{ fontSize: 12, color: 'var(--text-muted)', marginTop: 2 }}>
+            {aboutVersionLabel} {appVersion}
+          </div>
+        </div>
+      </div>
+
+      {phase === 'hint' && !overlayOpen && (
+        <p
+          style={{
+            fontSize: 12,
+            color: 'var(--text-secondary)',
+            marginTop: '0.5rem',
+            lineHeight: 1.5,
+          }}
+        >
+          {MSG_HINT}
+        </p>
+      )}
+
+      {overlayOpen &&
+        createPortal(
+          <div
+            role="dialog"
+            aria-modal="true"
+            aria-labelledby="about-psysonic-lol-title"
+            className="about-psysonic-lol-overlay"
+          >
+            <button
+              type="button"
+              className="about-psysonic-lol-close"
+              aria-label="Close"
+              onClick={closeOverlay}
+            >
+              <X size={26} strokeWidth={2.25} aria-hidden />
+            </button>
+            <div className="about-psysonic-lol-panel">
+              <div className="about-psysonic-lol-logo-slot">
+                <PsysonicLogo
+                  className="about-psysonic-lol-logo-mark"
+                  style={{
+                    height: 'clamp(3.25rem, 14vw, 5.75rem)',
+                    width: 'auto',
+                    maxWidth: 'min(100%, 420px)',
+                    display: 'block',
+                  }}
+                />
+              </div>
+              <div className="about-psysonic-lol-copy">
+                <h2 id="about-psysonic-lol-title" className="about-psysonic-lol-title">
+                  {MSG_CONGRATS_TITLE}
+                </h2>
+                <p className="about-psysonic-lol-lede">
+                  {"We're very much looking forward to you as a developer — join us on "}
+                  <button
+                    type="button"
+                    className="about-psysonic-lol-inline-link"
+                    onClick={() => void openUrl('https://github.com/Psychotoxical/psysonic')}
+                  >
+                    GitHub
+                  </button>
+                  {' and build great features!'}
+                </p>
+                <p className="about-psysonic-lol-signoff">{MSG_CONGRATS_SIGN_OFF}</p>
+                <p className="about-psysonic-lol-ps">{MSG_CONGRATS_PS}</p>
+              </div>
+            </div>
+          </div>,
+          document.body,
+        )}
+    </>
+  );
+}

src/pages/Settings.tsx

@@ -21,6 +21,7 @@ import { lastfmGetToken, lastfmAuthUrl, lastfmGetSession, lastfmGetUserInfo, Las
 import LastfmIcon from '../components/LastfmIcon';
 import CustomSelect from '../components/CustomSelect';
 import SettingsSubSection from '../components/SettingsSubSection';
+import { AboutPsysonicBrandHeader } from '../components/AboutPsysonicLol';
 import { useLuckyMixAvailable } from '../hooks/useLuckyMixAvailable';
 import ThemePicker, { THEME_GROUPS } from '../components/ThemePicker';
 import { useShallow } from 'zustand/react/shallow';
@@ -3984,17 +3985,7 @@ export default function Settings() {
             icon={<Info size={16} />}
           >
             <div className="settings-card settings-about">
-              <div className="settings-about-header">
-                <img src="/logo-psysonic.png" width={52} height={52} alt="Psysonic" style={{ borderRadius: 14 }} />
-                <div>
-                  <div style={{ fontFamily: 'var(--font-display)', fontSize: '1.25rem', fontWeight: 700, color: 'var(--text-primary)' }}>
-                    Psysonic
-                  </div>
-                  <div style={{ fontSize: 12, color: 'var(--text-muted)', marginTop: 2 }}>
-                    {t('settings.aboutVersion')} {appVersion}
-                  </div>
-                </div>
-              </div>
+              <AboutPsysonicBrandHeader appVersion={appVersion} aboutVersionLabel={t('settings.aboutVersion')} />
 
               <p style={{ fontSize: 13, color: 'var(--text-secondary)', lineHeight: 1.6, margin: '1rem 0 0.5rem' }}>
                 {t('settings.aboutDesc')}

src/styles/components.css

@@ -3756,6 +3756,168 @@
   gap: var(--space-4);
 }
 
+.about-psysonic-logo-lol-hit {
+  flex-shrink: 0;
+  margin: 0;
+  padding: 0;
+  border: none;
+  background: none;
+  cursor: pointer;
+  border-radius: 14px;
+  line-height: 0;
+}
+
+.about-psysonic-logo-lol-hit:focus-visible {
+  outline: 2px solid var(--accent);
+  outline-offset: 3px;
+}
+
+.about-psysonic-lol-close {
+  position: fixed;
+  top: max(12px, env(safe-area-inset-top, 0px));
+  right: max(12px, env(safe-area-inset-right, 0px));
+  z-index: 100001;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 48px;
+  height: 48px;
+  margin: 0;
+  padding: 0;
+  border: 2px solid #e2e8f0;
+  border-radius: var(--radius-full);
+  background: #1e293b;
+  color: #f8fafc;
+  cursor: pointer;
+  box-shadow:
+    0 0 0 1px #0f172a,
+    0 6px 24px rgba(0, 0, 0, 0.5);
+  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
+}
+
+.about-psysonic-lol-close:hover {
+  background: #334155;
+  border-color: #f8fafc;
+  color: #fff;
+}
+
+.about-psysonic-lol-close:focus-visible {
+  outline: 3px solid #38bdf8;
+  outline-offset: 2px;
+}
+
+.about-psysonic-lol-overlay {
+  position: fixed;
+  inset: 0;
+  z-index: 100000;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 2rem;
+  box-sizing: border-box;
+  isolation: isolate;
+  background: rgba(0, 0, 0, 0.82);
+}
+
+/* Opaque panel + fixed palette so contrast holds on every app theme. */
+.about-psysonic-lol-panel {
+  width: min(26rem, calc(100vw - 2.5rem));
+  max-width: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: stretch;
+  text-align: center;
+  padding: var(--space-5) var(--space-6) var(--space-6);
+  border-radius: 18px;
+  border: 2px solid #334155;
+  background: #0f172a;
+  color: #f8fafc;
+  box-shadow:
+    0 24px 80px rgba(0, 0, 0, 0.55),
+    inset 0 1px 0 rgba(255, 255, 255, 0.06);
+  --logo-color-start: #a78bfa;
+  --logo-color-end: #38bdf8;
+}
+
+.about-psysonic-lol-logo-slot {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: var(--space-1) 0 var(--space-4);
+  margin: 0;
+  border: none;
+  background: transparent;
+  box-shadow: none;
+}
+
+.about-psysonic-lol-logo-mark {
+  flex-shrink: 0;
+  filter: drop-shadow(0 2px 16px rgba(0, 0, 0, 0.55));
+}
+
+.about-psysonic-lol-copy {
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-3);
+  color: #f8fafc;
+}
+
+.about-psysonic-lol-title {
+  margin: 0;
+  font-family: var(--font-display);
+  font-size: clamp(1.5rem, 4.5vw, 1.9rem);
+  font-weight: 700;
+  line-height: 1.15;
+  letter-spacing: -0.02em;
+  color: #ffffff;
+}
+
+.about-psysonic-lol-lede {
+  margin: 0;
+  font-size: clamp(0.9rem, 2.4vw, 1rem);
+  line-height: 1.55;
+  color: #e2e8f0;
+  max-width: 24em;
+  margin-inline: auto;
+  text-wrap: balance;
+}
+
+.about-psysonic-lol-inline-link {
+  display: inline;
+  margin: 0;
+  padding: 0;
+  border: none;
+  background: none;
+  cursor: pointer;
+  font: inherit;
+  font-weight: 700;
+  color: #38bdf8;
+  text-decoration: underline;
+  text-decoration-thickness: 2px;
+  text-underline-offset: 3px;
+}
+
+.about-psysonic-lol-inline-link:hover {
+  color: #7dd3fc;
+}
+
+.about-psysonic-lol-signoff {
+  margin: 0;
+  font-size: 0.875rem;
+  line-height: 1.45;
+  color: #cbd5e1;
+  font-style: italic;
+}
+
+.about-psysonic-lol-ps {
+  margin: 0;
+  font-size: 0.8125rem;
+  line-height: 1.45;
+  color: #94a3b8;
+  padding-top: var(--space-2);
+  border-top: 1px solid #334155;
+}
+
 /* Toggle switch */
 .toggle-switch {
   position: relative;