fix: review accuracy threshold, friends empty state, profile fresh fetch

- Classifier: book threshold reduced from 5 to 2 full moves (was classifying
  everything as book in short games, resulting in 0% accuracy)
- Friends empty state: shows friendly illustration + 'invite friends' CTA button
  instead of hostile 'لا توجد بيانات' on black void
- Profile: always fetches fresh data from API on mount (fixes stale rating
  showing 1200 after playing rated games)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

public/js/modules/chess/logic/classifier.js

@@ -16,8 +16,8 @@ export function classifyMove(evalBefore, evalAfter, bestEval, isPlayerWhite, mov
   const evalChange = (evalAfter - evalBefore) * sign;
   const lossFromBest = (bestEval - evalAfter) * sign;
 
-  // Book moves (first 5 moves)
-  if (moveNum <= 5) return { class: 'book', symbol: '📖', color: '#94a3b8' };
+  // Book moves (first 2 full moves = 4 half-moves)
+  if (moveNum <= 2) return { class: 'book', symbol: '📖', color: '#94a3b8' };
 
   // If eval is mate-level, special handling
   if (Math.abs(evalAfter) > 900) {

public/js/modules/profile/scenes/view.js

@@ -2,9 +2,15 @@ import * as store from '../../../core/store.js';
 import * as scene from '../../../core/scene.js';
 import * as audio from '../../../core/audio.js';
 import * as bus from '../../../core/bus.js';
+import * as net from '../../../core/net.js';
 import { t } from '../../../core/i18n.js';
 
-export function mountView(el) {
+export async function mountView(el) {
+  // Always fetch fresh profile data
+  try {
+    const fresh = await net.get('profile.php');
+    if (fresh && !fresh.error) store.set('player', fresh);
+  } catch (e) {}
   const player = store.get('player') || {};
 
   el.innerHTML = `

public/js/modules/social/scenes/friends.js

@@ -27,7 +27,13 @@ export async function mountFriends(el) {
 function renderFriends(el, friends) {
   const list = el.querySelector('#friends-list');
   if (friends.length === 0) {
-    list.innerHTML = `<p style="color:var(--text-secondary);text-align:center;padding:var(--s-8);">${t('common.empty')}</p>`;
+    list.innerHTML = `
+      <div style="text-align:center;padding:48px 24px;">
+        <div style="font-size:56px;margin-bottom:16px;opacity:0.6;">👥</div>
+        <div style="font-size:16px;font-weight:700;color:#f8fafc;margin-bottom:6px;">لا يوجد أصدقاء بعد</div>
+        <div style="font-size:13px;color:#64748b;margin-bottom:20px;">أضف أصدقاء للعب معهم ومتابعة نتائجهم</div>
+        <button class="btn btn-primary" style="font-size:14px;" onclick="navigator.clipboard.writeText(window.location.origin);this.textContent='✓ تم نسخ الرابط';">📤 شارك رابط الدعوة</button>
+      </div>`;
     return;
   }