feat(labs): visual polish wave — LabFX foundation + 33 sims juiced up

ФУНДАМЕНТ (4 новых файла):
- _fx_core.js: LabFX namespace, glow.drawGlow, glow.pulse, haptic, shake
- _fx_particles.js: пул 1500 объектов, 6 shapes (dot/spark/ring/smoke/splash/dust)
- _fx_motion.js: tween + 12 easings + critically-damped spring
- _fx_sound.js: 9 procedural synth-звуков (click/tick/whoosh/chime/fizz/spark/bounce/pour/drone), Web Audio API
- Sound toggle в шапке lab.html с localStorage-persist

UX МИКРО (CSS + JS):
- Button states: hover scale+brightness, active scale-down, disabled grayscale
- Slider polish: custom thumb с тенью, filled-track gradient, hover/active
- Focus rings через :focus-visible
- Tooltip system .tt-host data-tt= с 400ms hover, fade-in
- Marching ants для selection
- Loading skeleton с shimmer
- Empty state .sim-empty-* паттерн
- Toast: progress bar внизу, icons по типу
- Cursor states utility classes
- View Transitions API для smooth sim-switch, fallback на CSS fade

PHASE 2 — визуальные эффекты для 33 симуляций:

Physics motion: projectile (launch whoosh + landing splash/shake/haptic + target chime), pendulum (max-extension tick + bob glow), collision (bounce + sparks + shake), angrybirds (whoosh/bounce/fizz/chime + confetti), newton (rocket flame trail + scene transitions), forcesandbox (spring glow + impact sparks)

Physics fields: emfield (field-lines glow + particle trail + lightning при high field + Gauss-drag haptic + rod motion sparks), circuit (energized-wire glow ∝ current + LED bloom + short-circuit shake/spark + heat shimmer smoke + place/erase/switch sounds), opticsbench (beam glow на всех режимах + caustics dust у фокуса + TIR/Brewster one-shot sounds)

Thermo+waves: waves (mode-switch whoosh + Mach-cone particles + spectrum harmonic chime + waveform glow), hydrostatics (pour sound + splash при погружении + valve click), isoprocess (PV-trail dust), heatengine (drone цикла + hot/cold reservoir smoke/dust + phase-change ticks), radioactive (Geiger tick throttle + decay sparks + half-life chime + α/β/γ glow)

Chemistry: chemsandbox (pour splash + fizz bubbles/dust/spark по типу реакции + shake при горении), equilibrium/electrolysis/reactions/titration/flask/ionexchange/redox (pour/fizz/spark/chime по событиям, частицы при ключевых моментах), stoichiometry (fizz bubbles + recipe-change click)

Math+geom: geometry (tool-click + object-create tick + locus glow + challenge confetti via LabFX + haptic), triangle (vertex-drop tick + special-point glow), stereo (figure-change whoosh + cross-section chime, no particles — Three.js), trigcircle (drag-haptic + pitch∝angle tick + sin/cos glow), graph/graphtransform/quadratic (slider-tick throttled + curve glow + discriminant-cross chime), probability (bounce + finish-chime burst), normaldist (pulsing shade + bell glow)

Bio+misc: celldivision (phase-change whoosh + prophase dust + anaphase poles spark + cytokinesis chime), photosynthesis (photon tick + ATP chime + glucose sparkle), bohratom (electron-jump chime ∝ levels + photon spark), orbitals/crystal (mode-change whoosh — Three.js, sound only), logic (gate-place + wire-connect + LED bloom + HIGH wire flowing dots + preset chime), gas/brownian/diffusion/states (preset whoosh, throttled tick по событиям)

Все LabFX вызовы обёрнуты в if (window.LabFX) guard — graceful degradation если фундамент не загружен. 47 JS файлов прошли syntax check.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/js/labs/trigcircle.js

@@ -98,6 +98,7 @@ class TrigCircleSim {
     this._drawCircle(c);
     if (this.showGraph) { this._drawDivider(c); this._drawGraph(c); }
     this._drawParticles(c);
+    if (window.LabFX) LabFX.particles.draw(c);
 
     c.restore();
     this._fireUpdate();
@@ -320,14 +321,22 @@ class TrigCircleSim {
     /* ═══ trig segments ═══ */
 
     if (this.showCos) {
-      this._glowLine(c, cx, cy, projX, cy, _TC.cos, 4);
+      if (window.LabFX) {
+        LabFX.glow.drawGlow(c, () => { this._glowLine(c, cx, cy, projX, cy, _TC.cos, 4); }, { color: '#06D6E0', intensity: 4 });
+      } else {
+        this._glowLine(c, cx, cy, projX, cy, _TC.cos, 4);
+      }
       c.font = 'bold 12px Manrope,sans-serif'; c.fillStyle = _TC.cos;
       c.textAlign = 'center'; c.textBaseline = sinA >= 0 ? 'top' : 'bottom';
       c.fillText('cos', (cx + projX) / 2, cy + (sinA >= 0 ? 12 : -12));
     }
 
     if (this.showSin) {
-      this._glowLine(c, projX, cy, px, py, _TC.sin, 4);
+      if (window.LabFX) {
+        LabFX.glow.drawGlow(c, () => { this._glowLine(c, projX, cy, px, py, _TC.sin, 4); }, { color: '#06D6E0', intensity: 4 });
+      } else {
+        this._glowLine(c, projX, cy, px, py, _TC.sin, 4);
+      }
       c.font = 'bold 12px Manrope,sans-serif'; c.fillStyle = _TC.sin;
       c.textAlign = cosA >= 0 ? 'left' : 'right'; c.textBaseline = 'middle';
       c.fillText('sin', projX + (cosA >= 0 ? 9 : -9), (cy + py) / 2);
@@ -866,10 +875,18 @@ class TrigCircleSim {
       cv.style.cursor = 'grabbing';
     });
 
+    this._lastDragSoundTs = 0;
     cv.addEventListener('mousemove', e => {
       if (this._drag) {
         const na = snapAngle(e); checkSnap(na);
         this.angle = na; this.draw();
+        const now = performance.now();
+        if (window.LabFX && now - this._lastDragSoundTs > 100) {
+          this._lastDragSoundTs = now;
+          const pitch = 0.8 + (this.angle / (2 * Math.PI)) * 0.8;
+          LabFX.sound.play('tick', { pitch, volume: 0.05 });
+          LabFX.haptic(5);
+        }
       } else {
         const h = hit(e);
         if (h !== this._hover) { this._hover = h; this.draw(); }
@@ -954,6 +971,7 @@ class TrigCircleSim {
     const loop = now => {
       const dt = (now-last)/1000; last = now;
       this._idlePulse += dt * 1.5;
+      if (window.LabFX) LabFX.particles.update(dt);
       /* update particles */
       if (this._particles.length > 0 || (!this._drag && !this.animating)) this.draw();
       this._idleRaf = requestAnimationFrame(loop);
@@ -1008,6 +1026,7 @@ if (typeof window !== 'undefined') window.TrigCircleSim = TrigCircleSim;
   function trigReset() {
     if (!trigSim) return;
     trigSim.setAngle(Math.PI / 4);
+    if (window.LabFX) LabFX.sound.play('click');
   }
 
   function _trigUpdateUI(s) {