feat: ensure saved answers from previous rounds are retained in progress tracking

static/math.js

@@ -76,7 +76,8 @@ function round(id){
   const n=QS(BY[id]).length; if(n<=ROUND) return [...Array(n).keys()];
   let r=P.set[id];
   if(!Array.isArray(r)||r.length!==ROUND||r.some(i=>!(Number.isInteger(i)&&i>=0&&i<n))){
-    if(!P.done[id]&&(P.solved[id]?.length||P.at[id]!=null)) r=[...Array(ROUND).keys()];
+    if(!P.done[id]&&(P.solved[id]?.length||P.at[id]!=null))   // progress from before rounds: keep what was solved
+      r=[...new Set([...(P.solved[id]||[]),P.at[id],...Array(n).keys()].filter(i=>Number.isInteger(i)&&i>=0&&i<n))].slice(0,ROUND);
     else { const got=solvedOf(id), all=shuffled([...Array(n).keys()]); r=[...all.filter(i=>!got.has(i)),...all.filter(i=>got.has(i))].slice(0,ROUND); }
     P.set[id]=r;
   }

tests/test_sky_browser.py

@@ -244,3 +244,12 @@ def test_progress_from_before_rounds_stays_on_the_first_ten(browser, server):
     playwright.expect(page.locator(".mx-qprog span").first).to_have_text("שאלה 4 מתוך 10")
     playwright.expect(page.locator(".mx-qdots i.ok")).to_have_count(3)
     assert not errors
+
+
+def test_answers_saved_by_a_page_from_before_rounds_are_kept(browser, server):
+    """A page that showed all 30 questions may have saved answers past the first ten: they join the round."""
+    page, errors = page_with(browser, server, {"solved": {"t_ext": [0, 1, 14, 22]}, "at": {"t_ext": 23}})
+    page.locator('.mx-star[data-id="t_ext"]').click()
+    playwright.expect(page.locator(".mx-qprog span").first).to_have_text("שאלה 5 מתוך 10")
+    playwright.expect(page.locator(".mx-qdots i.ok")).to_have_count(4)
+    assert not errors