refactor: move std-dev info to accordion, remove tooltip (#19)

- Add "Round spread" row (±stdDev, range lo–hi) to desktop accordion
  (player-history.ejs) and mobile card expanded section (ratings-cards.ejs)
- Remove .std-dev-tooltip div and .std-dev-inline span from table partial
- Remove stdDevTooltipText, updateStdDevInline, initRatingsTooltips helpers
  and all call sites from players.js
- Remove .std-dev-tooltip and .std-dev-inline CSS rules; drop cursor:help
  from .rating-value

public/js/players.js

@@ -26,27 +26,6 @@ function applyDeltaPill(pillEl, value) {
     pillEl.appendChild(numSpan);
 }
 
-// ── Std-dev helpers ───────────────────────────────
-function stdDevTooltipText(rating, stdDev) {
-    return `Spridning: ±${stdDev} poäng\nIntervall: ${rating - stdDev}–${rating + stdDev}`;
-}
-
-function updateStdDevInline(predStack, stdDev) {
-    if (!predStack) return;
-    let stdDevInline = predStack.querySelector('.std-dev-inline');
-    if (stdDev) {
-        if (!stdDevInline) {
-            stdDevInline = document.createElement('span');
-            stdDevInline.className = 'std-dev-inline mono';
-            predStack.appendChild(stdDevInline);
-        }
-        stdDevInline.textContent = '±' + stdDev;
-        stdDevInline.style.display = '';
-    } else if (stdDevInline) {
-        stdDevInline.style.display = 'none';
-    }
-}
-
 function initChartsIn(rootEl) {
     rootEl.querySelectorAll('.player-chart').forEach(function(container) {
         if (container.dataset.charted === 'true') return;
@@ -78,7 +57,6 @@ function setupAfterTableSwap() {
     document.body.addEventListener('htmx:afterSwap', function(event) {
         const target = event.detail.target;
         if (target.id === 'ratings-table') {
-            initRatingsTooltips();
             initChartsIn(target);
             return;
         }
@@ -88,19 +66,6 @@ function setupAfterTableSwap() {
     });
 }
 
-function initRatingsTooltips() {
-    document.querySelectorAll('.rating-value').forEach(span => {
-        const pdgaNumber = span.dataset.pdga;
-        const rating = parseInt(span.dataset.rating);
-        const stdDev = parseInt(span.dataset.stddev);
-        const tooltip = document.getElementById(`tooltip-rating-${pdgaNumber}`);
-
-        if (rating && stdDev && tooltip) {
-            setupTooltip(span, tooltip, () => stdDevTooltipText(rating, stdDev));
-        }
-    });
-}
-
 function togglePlayerHistory(pdgaNumber) {
     const historyRow = document.getElementById('history-' + pdgaNumber);
     const contentDiv = document.getElementById('history-content-' + pdgaNumber);
@@ -200,14 +165,6 @@ async function refreshPlayer(pdgaNumber) {
             if (ratingValue) {
                 ratingValue.textContent = data.player.rating || 'N/A';
                 ratingValue.dataset.rating = data.player.rating || '';
-
-                const stdDev = parseInt(ratingValue.dataset.stddev);
-                const rating = parseInt(data.player.rating);
-                const tooltip = document.getElementById(`tooltip-rating-${pdgaNumber}`);
-
-                if (rating && stdDev && tooltip) {
-                    replaceWithTooltip(ratingValue, tooltip, () => stdDevTooltipText(rating, stdDev));
-                }
             }
 
             const deltaMonthPill = ratingCell ? ratingCell.querySelector('.delta-pill') : null;
@@ -239,8 +196,6 @@ async function refreshRoundHistory(pdgaNumber) {
                 if (predictedValue) {
                     predictedValue.textContent = data.predictedRating || 'N/A';
                     predictedValue.dataset.stddev = data.stdDev || '';
-
-                    updateStdDevInline(predictedValue.closest('.pred-stack'), data.stdDev);
                 }
             }
 
@@ -249,14 +204,6 @@ async function refreshRoundHistory(pdgaNumber) {
             const ratingValue = ratingCell ? ratingCell.querySelector('.rating-value') : null;
             if (ratingValue && data.stdDev) {
                 ratingValue.dataset.stddev = data.stdDev;
-
-                const rating = parseInt(ratingValue.dataset.rating);
-                const stdDev = parseInt(data.stdDev);
-                const ratingTooltip = document.getElementById(`tooltip-rating-${pdgaNumber}`);
-
-                if (rating && stdDev && ratingTooltip) {
-                    replaceWithTooltip(ratingValue, ratingTooltip, () => stdDevTooltipText(rating, stdDev));
-                }
             }
         }
     } catch (error) {
@@ -772,7 +719,6 @@ async function refreshHistoryThenCalculate(pdgaNumber) {
             if (predictedValue) {
                 predictedValue.textContent = data.predictedRating || 'N/A';
                 predictedValue.dataset.stddev = data.stdDev || '';
-                updateStdDevInline(predictedValue.closest('.pred-stack'), data.stdDev);
             }
         }