From 8838f963a35ec231ab8ee79e3f260cff5d6ae13c Mon Sep 17 00:00:00 2001
From: Maxim Dolgolyov <maxim.dolgolyov@gmail.com>
Date: Wed, 27 May 2026 11:21:33 +0300
Subject: [PATCH] =?UTF-8?q?fix(textbooks):=20=D1=88=D0=BF=D0=B0=D1=80?=
 =?UTF-8?q?=D0=B3=D0=B0=D0=BB=D0=BA=D0=B0=20=D0=BF=D0=BE=D0=BA=D0=B0=D0=B7?=
 =?UTF-8?q?=D1=8B=D0=B2=D0=B0=D0=B5=D1=82=20=D1=87=D0=B5=D0=BB=D0=BE=D0=B2?=
 =?UTF-8?q?=D0=B5=D1=87.=20=D0=BD=D0=B0=D0=B7=D0=B2=D0=B0=D0=BD=D0=B8?=
 =?UTF-8?q?=D1=8F=20=D0=B4=D0=BE=D1=81=D1=82=D0=B8=D0=B6=D0=B5=D0=BD=D0=B8?=
 =?UTF-8?q?=D0=B9=20=D0=B2=D0=BC=D0=B5=D1=81=D1=82=D0=BE=20id?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Было: 'ring36', 'start' — внутренние id-ы достижений
Стало: 'Начало пути по корням!', 'Нашёл сторону ринга'

STATE.achievements теперь Map(id → text). Старый формат массива id-ов читается с обратной совместимостью (id используется как текст). При сохранении пишется как объект.
---
 frontend/textbooks/algebra_8.html | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/frontend/textbooks/algebra_8.html b/frontend/textbooks/algebra_8.html
index ff4460d..2225612 100644
--- a/frontend/textbooks/algebra_8.html
+++ b/frontend/textbooks/algebra_8.html
@@ -395,7 +395,7 @@ input,select,textarea{font-family:inherit}
 const STATE = {
   current: 'p1',
   progress: { p1: 0, p2: 0, p3: 0, p4: 0, p5: 0, p6: 0, final: 0 },
-  achievements: new Set(),
+  achievements: new Map(),     // id → human-readable text
   squaresBest: Infinity,
 };
 
@@ -404,7 +404,15 @@ function loadProgress(){
     const s = localStorage.getItem('algebra8_ch1_progress');
     if(s){ Object.assign(STATE.progress, JSON.parse(s)); }
     const a = localStorage.getItem('algebra8_ch1_achievements');
-    if(a){ STATE.achievements = new Set(JSON.parse(a)); }
+    if(a){
+      const parsed = JSON.parse(a);
+      if(Array.isArray(parsed)){
+        // старый формат [id, id, ...] — id-ы как текст
+        parsed.forEach(id => STATE.achievements.set(id, id));
+      } else if(parsed && typeof parsed === 'object'){
+        STATE.achievements = new Map(Object.entries(parsed));
+      }
+    }
     const sb = localStorage.getItem('algebra8_ch1_squaresBest');
     if(sb) STATE.squaresBest = +sb;
   }catch(e){}
@@ -412,7 +420,7 @@ function loadProgress(){
 function saveProgress(){
   try{
     localStorage.setItem('algebra8_ch1_progress', JSON.stringify(STATE.progress));
-    localStorage.setItem('algebra8_ch1_achievements', JSON.stringify([...STATE.achievements]));
+    localStorage.setItem('algebra8_ch1_achievements', JSON.stringify(Object.fromEntries(STATE.achievements)));
     if(isFinite(STATE.squaresBest)) localStorage.setItem('algebra8_ch1_squaresBest', String(STATE.squaresBest));
   }catch(e){}
 }
@@ -437,7 +445,7 @@ function refreshProgressUI(){
 }
 function achievement(id, text){
   if(STATE.achievements.has(id)) return;
-  STATE.achievements.add(id);
+  STATE.achievements.set(id, text);
   saveProgress();
   const pop = document.getElementById('ach-popup');
   document.getElementById('ach-text').textContent = text;
@@ -579,8 +587,8 @@ function buildSidebar(id){
   // achievements
   if(STATE.achievements.size > 0){
     html += `<div class="sidecard"><h4>Достижения <span style="color:var(--warn);float:right">${STATE.achievements.size}</span></h4>`;
-    [...STATE.achievements].slice(-4).forEach(a=>{
-      html += `<div class="sidecard-row" style="font-size:.78rem;color:var(--ok)">✓ ${a}</div>`;
+    [...STATE.achievements.values()].slice(-4).forEach(text=>{
+      html += `<div class="sidecard-row" style="font-size:.78rem;color:var(--ok)">✓ ${text}</div>`;
     });
     html += '</div>';
   }