3.11内测版：在线曲线采集上收core全站唯一入口+领地管理分页

- core.php 新增 onlineCurveEnsureSnapshot：心跳判据(>120秒记0防停服假曲线)、60秒节流、保留7天、source列迁移
- sync.php 三挂点(sync_online_players/online_heartbeat/对账兜底)自动留样本，不再依赖有人开页面
- online_curve.php 三本地函数改薄壳+max字段改真实最大值+文案改Java同步自动采集语义
- admin.php 领地列表/权限商店分页渲染：每页10/20/30预制+自定义不封顶+localStorage记忆；曲线文案同步

admin.php

@@ -2682,67 +2682,182 @@ async function loadLands(el) {
         </div>`;
         html += '</div>';
 
-        // 领地列表
-        html += '<h3 style="color:var(--fg);margin-bottom:8px">📍 领地列表</h3>';
-        if (lands.length === 0) {
-            html += '<div style="background:var(--card);border:1px solid var(--border);border-radius:8px;padding:24px;text-align:center;color:var(--dim)">暂无领地数据<br><span style="font-size:11px">Java端会自动同步领地数据到此</span></div>';
-        } else {
-            html += '<div style="overflow-x:auto"><table class="table"><tr>';
-            html += '<th>ID</th><th>名称</th><th>所有者</th><th>世界</th><th>坐标</th><th>面积</th><th>操作</th>';
-            html += '</tr>';
-            for (const l of lands) {
-                const size = l.area_size || Math.abs((l.x2-l.x1+1)*(l.z2-l.z1+1));
-                html += `<tr>
-                    <td>${l.id}</td>
-                    <td><strong>${escAdmHtml(l.name)}</strong></td>
-                    <td>${escAdmHtml(l.owner || '无')}</td>
-                    <td>${escAdmHtml(l.world)}</td>
-                    <td style="font-size:11px">${l.x1},${l.z1} → ${l.x2},${l.z2}</td>
-                    <td>${size} 格²</td>
-                    <td>
-                        <button onclick="adminTransferLand('${escAdmHtml(l.name)}','${escAdmHtml(l.owner)}')" style="padding:2px 8px;background:#ff9800;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:11px">改主</button>
-                        <button onclick="deleteLand('${escAdmHtml(l.name)}')" style="padding:2px 8px;background:#f44336;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:11px">删除</button>
-                    </td>
-                </tr>`;
-            }
-            html += '</table></div>';
-        }
+        // 领地列表（3.11内测版：分页渲染，表格挪到 renderLandListSec）
+        html += '<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;flex-wrap:wrap;gap:8px">';
+        html += '<h3 style="color:var(--fg);margin:0">📍 领地列表</h3>';
+        html += landPerCtlHtml();
+        html += '</div>';
+        html += '<div id="landListSec"></div>';
 
-        // 权限商店
-        html += '<h3 style="color:var(--fg);margin:20px 0 8px">🛒 权限商店</h3>';
+        // 权限商店（3.11内测版：分页渲染，表格挪到 renderLandShopSec）
         const allShop = shopRes.items || [];
-        if (allShop.length === 0) {
-            html += '<div style="background:var(--card);border:1px solid var(--border);border-radius:8px;padding:24px;text-align:center;color:var(--dim)">暂无权限商品</div>';
-        } else {
-            html += '<div style="overflow-x:auto"><table class="table"><tr>';
-            html += '<th>ID</th><th>领地</th><th>卖家</th><th>价格</th><th>时长</th><th>状态</th><th>买家</th><th>操作</th>';
-            html += '</tr>';
-            for (const s of allShop) {
-                const dur = s.duration >= 86400 ? Math.floor(s.duration/86400)+'天' : s.duration >= 3600 ? Math.floor(s.duration/3600)+'小时' : Math.floor(s.duration/60)+'分钟';
-                const statusColor = s.status === 'active' ? '#4caf50' : s.status === 'sold' ? '#ff9800' : '#f44336';
-                html += `<tr>
-                    <td>${s.id}</td>
-                    <td>${escAdmHtml(s.land_name)}</td>
-                    <td>${escAdmHtml(s.seller)}</td>
-                    <td style="color:#ff9800">${s.price}💰</td>
-                    <td>${dur}</td>
-                    <td style="color:${statusColor}">${s.status === 'active' ? '在售' : s.status === 'sold' ? '已售' : '已下架'}</td>
-                    <td>${s.buyer ? escAdmHtml(s.buyer) : '-'}</td>
-                    <td>
-                        ${s.status === 'active' ? `<button onclick="deleteShopItem(${s.id})" style="padding:2px 8px;background:#f44336;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:11px">下架</button>` : ''}
-                    </td>
-                </tr>`;
-            }
-            html += '</table></div>';
-        }
+        html += '<h3 style="color:var(--fg);margin:20px 0 8px">🛒 权限商店</h3>';
+        html += '<div id="landShopSec"></div>';
 
+        // 缓存全量数据供分页渲染（3.11内测版）
+        window._landCache = { lands: lands, shopAll: allShop, cfg: cfg };
         el.innerHTML = html;
+        renderLandListSec();
+        renderLandShopSec();
     } catch(e) {
         console.error('[LANDS] Error:', e);
         el.innerHTML = `<div style="background:var(--card);border:1px solid var(--border);border-radius:8px;padding:24px;text-align:center;color:var(--dim)">加载失败: ${escAdmHtml(e.message)}</div>`;
     }
 }
 
+// ===== 领地管理分页（3.11内测版）=====
+// 全量数据缓存在 window._landCache，渲染函数只画当前页；
+// 每页条数：预制10/20/30 + 自定义(不设封顶)，localStorage 记忆。
+window._landPg = { list: 1, shop: 1 };
+function landPerPage() {
+    const v = parseInt(localStorage.getItem('sdf_land_perpage') || '10', 10);
+    return v > 0 ? v : 10; // 自定义不设封顶，仅下限1
+}
+function landSetPer(v) {
+    let n = parseInt(v, 10);
+    if (!(n > 0)) n = 10;
+    localStorage.setItem('sdf_land_perpage', String(n));
+    window._landPg.list = 1;
+    window._landPg.shop = 1;
+    renderLandListSec();
+    renderLandShopSec();
+}
+function landPerSelChange(v) {
+    if (v === 'custom') {
+        const inp = document.getElementById('landPerNum');
+        if (inp) { inp.focus(); inp.select(); }
+    } else {
+        landSetPer(v);
+    }
+}
+function landPerCtlHtml() {
+    const per = landPerPage();
+    const custom = !(per === 10 || per === 20 || per === 30);
+    return `<div style="display:flex;align-items:center;gap:6px;font-size:12px;color:var(--dim)">每页
+        <select onchange="landPerSelChange(this.value)" style="padding:3px 6px;background:var(--bg);color:var(--fg);border:1px solid var(--border);border-radius:4px">
+            <option value="10" ${per===10?'selected':''}>10个</option>
+            <option value="20" ${per===20?'selected':''}>20个</option>
+            <option value="30" ${per===30?'selected':''}>30个</option>
+            <option value="custom" ${custom?'selected':''}>自定义</option>
+        </select>
+        <input id="landPerNum" type="number" min="1" value="${per}" onchange="landSetPer(this.value)" style="width:62px;padding:3px 6px;background:var(--bg);color:var(--fg);border:1px solid var(--border);border-radius:4px" title="自定义每页条数，不设封顶">
+        个/页
+    </div>`;
+}
+function landPageBox(total) {
+    const per = landPerPage();
+    return Math.max(1, Math.ceil(total / per));
+}
+function landPagerHtml(kind, total) {
+    if (total === 0) return '';
+    const per = landPerPage();
+    const pages = landPageBox(total);
+    let pg = window._landPg[kind] || 1;
+    if (pg > pages) pg = pages;
+    if (pg < 1) pg = 1;
+    window._landPg[kind] = pg;
+    const from = (pg - 1) * per + 1;
+    const to = Math.min(total, pg * per);
+    let s = Math.max(1, pg - 4), e = Math.min(pages, s + 8);
+    s = Math.max(1, e - 8);
+    let btns = '';
+    const base = 'padding:3px 9px;border:1px solid var(--border);border-radius:4px;cursor:pointer;font-size:12px;';
+    for (let i = s; i <= e; i++) {
+        btns += i === pg
+            ? `<button style="${base}background:var(--accent);color:#fff;border-color:var(--accent)">${i}</button>`
+            : `<button onclick="landGoPage('${kind}',${i})" style="${base}background:var(--card);color:var(--dim)">${i}</button>`;
+    }
+    return `<div style="display:flex;align-items:center;gap:6px;margin-top:10px;flex-wrap:wrap">
+        <span style="font-size:12px;color:var(--dim)">显示 ${from}-${to} / ${total} 条 · 共 ${pages} 页</span>
+        <button onclick="landGoPage('${kind}',1)" style="${base}background:var(--card);color:var(--dim)">⏮ 首页</button>
+        <button onclick="landGoPage('${kind}',${pg-1})" style="${base}background:var(--card);color:var(--dim)">‹ 上一页</button>
+        ${btns}
+        <button onclick="landGoPage('${kind}',${pg+1})" style="${base}background:var(--card);color:var(--dim)">下一页 ›</button>
+        <button onclick="landGoPage('${kind}',${pages})" style="${base}background:var(--card);color:var(--dim)">末页 ⏭</button>
+    </div>`;
+}
+function landGoPage(kind, p) {
+    const cache = window._landCache || {};
+    const total = kind === 'list' ? ((cache.lands || []).length) : ((cache.shopAll || []).length);
+    const pages = landPageBox(total);
+    let n = parseInt(p, 10);
+    if (!(n >= 1)) n = 1;
+    if (n > pages) n = pages;
+    window._landPg[kind] = n;
+    if (kind === 'list') renderLandListSec(); else renderLandShopSec();
+}
+function renderLandListSec() {
+    const box = document.getElementById('landListSec');
+    if (!box) return;
+    const lands = ((window._landCache || {}).lands) || [];
+    if (lands.length === 0) {
+        box.innerHTML = '<div style="background:var(--card);border:1px solid var(--border);border-radius:8px;padding:24px;text-align:center;color:var(--dim)">暂无领地数据<br><span style="font-size:11px">Java端会自动同步领地数据到此</span></div>';
+        return;
+    }
+    const per = landPerPage();
+    const pages = landPageBox(lands.length);
+    if (window._landPg.list > pages) window._landPg.list = pages;
+    if (window._landPg.list < 1) window._landPg.list = 1;
+    const rows = lands.slice((window._landPg.list - 1) * per, window._landPg.list * per);
+    let html = '<div style="overflow-x:auto"><table class="table"><tr>';
+    html += '<th>ID</th><th>名称</th><th>所有者</th><th>世界</th><th>坐标</th><th>面积</th><th>操作</th>';
+    html += '</tr>';
+    for (const l of rows) {
+        const size = l.area_size || Math.abs((l.x2-l.x1+1)*(l.z2-l.z1+1));
+        html += `<tr>
+            <td>${l.id}</td>
+            <td><strong>${escAdmHtml(l.name)}</strong></td>
+            <td>${escAdmHtml(l.owner || '无')}</td>
+            <td>${escAdmHtml(l.world)}</td>
+            <td style="font-size:11px">${l.x1},${l.z1} → ${l.x2},${l.z2}</td>
+            <td>${size} 格²</td>
+            <td>
+                <button onclick="adminTransferLand('${escAdmHtml(l.name)}','${escAdmHtml(l.owner)}')" style="padding:2px 8px;background:#ff9800;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:11px">改主</button>
+                <button onclick="deleteLand('${escAdmHtml(l.name)}')" style="padding:2px 8px;background:#f44336;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:11px">删除</button>
+            </td>
+        </tr>`;
+    }
+    html += '</table></div>';
+    html += landPagerHtml('list', lands.length);
+    box.innerHTML = html;
+}
+function renderLandShopSec() {
+    const box = document.getElementById('landShopSec');
+    if (!box) return;
+    const allShop = ((window._landCache || {}).shopAll) || [];
+    if (allShop.length === 0) {
+        box.innerHTML = '<div style="background:var(--card);border:1px solid var(--border);border-radius:8px;padding:24px;text-align:center;color:var(--dim)">暂无权限商品</div>';
+        return;
+    }
+    const per = landPerPage();
+    const pages = landPageBox(allShop.length);
+    if (window._landPg.shop > pages) window._landPg.shop = pages;
+    if (window._landPg.shop < 1) window._landPg.shop = 1;
+    const rows = allShop.slice((window._landPg.shop - 1) * per, window._landPg.shop * per);
+    let html = '<div style="overflow-x:auto"><table class="table"><tr>';
+    html += '<th>ID</th><th>领地</th><th>卖家</th><th>价格</th><th>时长</th><th>状态</th><th>买家</th><th>操作</th>';
+    html += '</tr>';
+    for (const s of rows) {
+        const dur = s.duration >= 86400 ? Math.floor(s.duration/86400)+'天' : s.duration >= 3600 ? Math.floor(s.duration/3600)+'小时' : Math.floor(s.duration/60)+'分钟';
+        const statusColor = s.status === 'active' ? '#4caf50' : s.status === 'sold' ? '#ff9800' : '#f44336';
+        html += `<tr>
+            <td>${s.id}</td>
+            <td>${escAdmHtml(s.land_name)}</td>
+            <td>${escAdmHtml(s.seller)}</td>
+            <td style="color:#ff9800">${s.price}💰</td>
+            <td>${dur}</td>
+            <td style="color:${statusColor}">${s.status === 'active' ? '在售' : s.status === 'sold' ? '已售' : '已下架'}</td>
+            <td>${s.buyer ? escAdmHtml(s.buyer) : '-'}</td>
+            <td>
+                ${s.status === 'active' ? `<button onclick="deleteShopItem(${s.id})" style="padding:2px 8px;background:#f44336;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:11px">下架</button>` : ''}
+            </td>
+        </tr>`;
+    }
+    html += '</table></div>';
+    html += landPagerHtml('shop', allShop.length);
+    box.innerHTML = html;
+}
+
 function showLandConfig() {
     const cfg = window._landCfgData || {};
     const price = cfg.create_price_per_sqm || '10';
@@ -4177,9 +4292,9 @@ async function loadOnlineCurve(el) {
                         return `<div class="cbar-item" title="${b.hour} 平均 ${b.avg} 人 (采样 ${b.samples})"><div class="cbar ${empty?'empty-bar':''}" style="height:${empty?'2px':h+'%'}"></div><div class="cbar-lbl">${b.hour.slice(0,2)}</div></div>`;
                     }).join('')}
                 </div>
-                <div class="curve-peak">横轴为 00–23 时，每个柱为该时段<b>平均在线人数</b>；快照每60秒自动记录一次。</div>
+                <div class="curve-peak">横轴为 00–23 时，每个柱为该时段<b>平均在线人数</b>；快照由 Java 同步/心跳每60秒自动采集（停服时段记0）。</div>
                 ` : `
-                <div style="text-align:center;color:var(--dim);padding:50px">📊 数据收集中 — 页面每60秒记录一次快照，积累后将自动生成曲线</div>
+                <div style="text-align:center;color:var(--dim);padding:50px">📊 数据收集中 — Java 同步/心跳每60秒自动采集，积累后将自动生成曲线</div>
                 `}
             </div>`;
     };

api/sync.php

@@ -1558,6 +1558,8 @@ function checkAlignment() {
                 @error_log("[checkAlignment] online心跳兜底刷新失败: " . $e->getMessage());
                 // 失败不影响对账本身
             }
+            // ★ 3.11内测版：对账链路通也视为 Java 活着，顺手留曲线样本
+            onlineCurveEnsureSnapshot(false, 'align');
         }
 
         // ---- Java 报上来的本机 key + 指纹 ----
@@ -2249,6 +2251,9 @@ function syncOnlinePlayers() {
     $verifyRow = $verifyStmt->fetchArray(SQLITE3_ASSOC);
     @error_log("[syncOnlinePlayers] Synced $synced/$playerCount, DB now has " . ($verifyRow['cnt'] ?? 0) . " records");
 
+    // ★ 3.11内测版：在线曲线快照统一采集（名单有变化的全量同步路径）
+    onlineCurveEnsureSnapshot(false, 'sync');
+
     success(['synced' => $synced, 'server_time' => $now], "同步了" . $synced . "个在线玩家");
 }
 
@@ -2308,6 +2313,10 @@ function onlineHeartbeat() {
         error('心跳写入失败: ' . $e->getMessage());
     }
 
+    // ★ 3.11内测版：在线曲线快照统一采集（名单无变化的轻量保活路径——
+    //   玩家稳定在线时 Java 只走这条出口，采集必须挂这里才不会整段丢样本）
+    onlineCurveEnsureSnapshot(false, 'heartbeat');
+
     success([
         'last_seen'   => $fresh,
         'server_time' => $now,

core.php

@@ -2664,6 +2664,97 @@ function jsonResponse($data, $code = 200) {
     exit;
 }
 
+
+/**
+ * ===== 在线曲线快照统一采集（3.11内测版 · 2026-10-22）=====
+ *
+ * 背景：此前快照只在有人打开 online_curve.php 页面时才记录（页面加载 + 60秒
+ * JS定时器 + ensureRecentSnapshot），三环根因导致数据丢失：
+ *   ① 没人开页面 = 全天零样本，曲线空白；
+ *   ② 停服后若浏览器页面仍开着，定时器拿冻结的 online_players 旧值记账 →
+ *      停服时段出现假在线曲线（如15点假数据）；
+ *   ③ Java 短暂抽风(<120秒)时恰无人看页 → 该分钟样本永久丢失。
+ *
+ * 修法：采集上收到 core.php 全站唯一入口，多路触发统一挂载——
+ *   sync.php 的 syncOnlinePlayers / onlineHeartbeat / checkAlignment(cat=online)
+ *   以及 online_curve.php 页面。只要 Java 与 PHP 的同步链路活着（名单变化推送、
+ *   轻量心跳、对账任一），就自动留样本，不再依赖有没有人开页面。
+ *
+ * 心跳判据（与 admin 后台 120 秒归零口径一致）：
+ *   online_player_hb.last_seen 距现在 <=120秒 → Java 活着 → 记 COUNT(online_players)；
+ *     Java 短抽风(<120秒)时表里是最后已知值，样本不丢；
+ *   >120秒 → 记 0（服务端已停/抽风超阈值，杜绝停服后伪造曲线）。
+ *
+ * 其余：60秒节流（全站唯一写者，force 可穿透）；保留7天（聚合只取近24小时，
+ * 多留供回溯排障）；source 列标记样本来源(sync/heartbeat/align/page)便于排障。
+ *
+ * @return array ['count'=>int 当前在线(陈旧记0口径), 'recorded'=>bool 本次是否落样本, 'stale'=>bool 心跳是否陈旧]
+ */
+function onlineCurveEnsureSnapshot($force = false, $source = 'page') {
+    $now = time();
+    $res = ['count' => 0, 'recorded' => false, 'stale' => true];
+    try {
+        $db = getDB();
+        $db->exec('PRAGMA busy_timeout=5000');
+        $db->exec("CREATE TABLE IF NOT EXISTS online_snapshots (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            snapshot_time INTEGER NOT NULL,
+            online_count INTEGER NOT NULL DEFAULT 0,
+            source TEXT DEFAULT ''
+        )");
+        $db->exec("CREATE INDEX IF NOT EXISTS idx_snap_time ON online_snapshots(snapshot_time)");
+        // 老表无 source 列 → 幂等迁移补列
+        $hasSource = false;
+        $cols = @$db->query("PRAGMA table_info(online_snapshots)");
+        while ($cols && ($c = $cols->fetchArray(SQLITE3_ASSOC))) {
+            if (($c['name'] ?? '') === 'source') { $hasSource = true; break; }
+        }
+        if (!$hasSource) @$db->exec("ALTER TABLE online_snapshots ADD COLUMN source TEXT DEFAULT ''");
+
+        // 心跳判据：<=120秒新鲜 → Java 活着（与 admin 后台归零口径一致）
+        $stale = true;
+        try {
+            @$db->exec("CREATE TABLE IF NOT EXISTS online_player_hb (id INTEGER PRIMARY KEY DEFAULT 1, last_seen INTEGER DEFAULT 0)");
+            $hb = $db->query("SELECT last_seen FROM online_player_hb WHERE id = 1");
+            $hbRow = $hb ? $hb->fetchArray(SQLITE3_ASSOC) : null;
+            if ($hbRow && (int)$hbRow['last_seen'] > 0 && ($now - (int)$hbRow['last_seen']) <= 120) {
+                $stale = false;
+            }
+        } catch (\Throwable $eHeartbeat) {
+            // 心跳表异常按陈旧处理（记0），不影响采集函数本身
+        }
+        $count = 0;
+        if (!$stale) {
+            $r = $db->query("SELECT COUNT(*) AS cnt FROM online_players");
+            $row = $r ? $r->fetchArray(SQLITE3_ASSOC) : null;
+            $count = (int)($row['cnt'] ?? 0);
+        }
+        $res = ['count' => $count, 'recorded' => false, 'stale' => $stale];
+
+        // 60秒节流：全站唯一写者，防止多路触发在同分钟内重复落样本
+        if (!$force) {
+            $mx = $db->query("SELECT MAX(snapshot_time) AS t FROM online_snapshots");
+            $mxRow = $mx ? $mx->fetchArray(SQLITE3_ASSOC) : null;
+            $last = (int)($mxRow['t'] ?? 0);
+            if ($last > 0 && ($now - $last) < 60) return $res;
+        }
+
+        $stmt = $db->prepare("INSERT INTO online_snapshots (snapshot_time, online_count, source) VALUES (:t, :c, :s)");
+        $stmt->bindValue(':t', $now, SQLITE3_INTEGER);
+        $stmt->bindValue(':c', $count, SQLITE3_INTEGER);
+        $stmt->bindValue(':s', (string)$source, SQLITE3_TEXT);
+        $stmt->execute();
+        $res['recorded'] = true;
+
+        // 保留7天（聚合取近24小时，多留供回溯排障）
+        $db->exec("DELETE FROM online_snapshots WHERE snapshot_time < " . ($now - 604800));
+        $GLOBALS['ONLINE_CURVE_SOURCE'] = $source;
+    } catch (\Throwable $e) {
+        debugLog('[onlineCurve] 采集异常(' . $source . '): ' . $e->getMessage());
+    }
+    return $res;
+}
+
 function success($data = null, $message = 'ok') {
     jsonResponse(['success' => true, 'message' => $message, 'data' => $data]);
 }

online_curve.php

@@ -5,59 +5,25 @@ if (session_status() === PHP_SESSION_NONE) session_start();
 
 $action = getParam('action', 'page');
 
-// ===== 初始化快照表 =====
+// ===== 快照采集已上收 core.php（3.11内测版）=====
+// 全站唯一采集函数 onlineCurveEnsureSnapshot() 由 core.php 提供：
+// sync.php 三个入口(sync_online_players / online_heartbeat / 对账兜底) + 本页面
+// 多路触发统一写入，60秒节流，心跳判据(>120秒记0防停服假曲线)，保留7天。
+// 本地三个函数改薄壳保持旧调用点兼容。
 function ensureSnapshotTable() {
-    try {
-        $db = getDB();
-        $db->exec("CREATE TABLE IF NOT EXISTS online_snapshots (
-            id INTEGER PRIMARY KEY AUTOINCREMENT,
-            snapshot_time INTEGER NOT NULL,
-            online_count INTEGER NOT NULL DEFAULT 0
-        )");
-        $db->exec("CREATE INDEX IF NOT EXISTS idx_snap_time ON online_snapshots(snapshot_time)");
-        // 清理24小时前的旧快照（保留24小时数据）
-        $db->exec("DELETE FROM online_snapshots WHERE snapshot_time < " . (time() - 86400));
-    } catch (\Throwable $e) {
-        debugLog('[online_curve] 建表异常: ' . $e->getMessage());
-    }
+    onlineCurveEnsureSnapshot(false, 'page');
 }
 
-// ===== 记录快照 =====
+// ===== 记录快照（薄壳：是否真正落样本由 core 60秒节流裁决） =====
 function recordSnapshot() {
-    ensureSnapshotTable();
-    $count = 0;
-    try {
-        $db = getDB();
-        $res = $db->query("SELECT COUNT(*) AS cnt FROM online_players");
-        $row = $res->fetchArray(SQLITE3_ASSOC);
-        $count = (int)($row['cnt'] ?? 0);
-        $now = time();
-        $stmt = $db->prepare("INSERT INTO online_snapshots (snapshot_time, online_count) VALUES (:t, :c)");
-        $stmt->bindValue(':t', $now, SQLITE3_INTEGER);
-        $stmt->bindValue(':c', $count, SQLITE3_INTEGER);
-        $stmt->execute();
-    } catch (\Throwable $e) {
-        debugLog('[online_curve] 记录快照异常: ' . $e->getMessage());
-    }
-    return $count;
+    $r = onlineCurveEnsureSnapshot(false, 'page');
+    return $r['count'];
 }
 
-// ===== 确保有最新快照（如果上次快照超过60秒则自动记录） =====
+// ===== 确保有最新快照（薄壳：节流由 core 统一处理） =====
 function ensureRecentSnapshot() {
-    try {
-        $db = getDB();
-        $res = $db->query("SELECT MAX(snapshot_time) AS last_time FROM online_snapshots");
-        $row = $res->fetchArray(SQLITE3_ASSOC);
-        $lastTime = (int)($row['last_time'] ?? 0);
-        $now = time();
-        // 没有快照，或上次快照超过 55 秒（留 5 秒余量防止频繁写）
-        if ($lastTime === 0 || ($now - $lastTime) > 55) {
-            return recordSnapshot();
-        }
-    } catch (\Throwable $e) {
-        debugLog('[online_curve] ensureRecentSnapshot 异常: ' . $e->getMessage());
-    }
-    return null;
+    $r = onlineCurveEnsureSnapshot(false, 'page');
+    return $r['recorded'] ? $r['count'] : null;
 }
 
 // ===== 获取24小时聚合数据（按小时） =====
@@ -69,7 +35,7 @@ function getHourlyData() {
     $since = time() - 86400;
     // 按自然小时聚合：分桶到 h0~h23，取平均值
     $buckets = [];
-    for ($i = 0; $i < 24; $i++) $buckets[$i] = ['hour' => $i, 'count' => 0, 'samples' => 0];
+    for ($i = 0; $i < 24; $i++) $buckets[$i] = ['hour' => $i, 'count' => 0, 'samples' => 0, 'max' => 0];
     try {
         $db = getDB();
         $stmt = $db->prepare("SELECT snapshot_time, online_count FROM online_snapshots WHERE snapshot_time >= :since ORDER BY snapshot_time ASC");
@@ -81,6 +47,7 @@ function getHourlyData() {
             $h = (int)date('G', $snapshotTime);
             $buckets[$h]['count'] += (int)$row['online_count'];
             $buckets[$h]['samples']++;
+            if ((int)$row['online_count'] > $buckets[$h]['max']) $buckets[$h]['max'] = (int)$row['online_count'];
         }
     } catch (\Throwable $e) {
         debugLog('[online_curve] 查询异常: ' . $e->getMessage());
@@ -91,7 +58,7 @@ function getHourlyData() {
         $result[] = [
             'hour' => sprintf('%02d:00', $b['hour']),
             'avg' => $avg,
-            'max' => $b['samples'] > 0 ? round($b['count'] / max(1,$b['samples']), 1) : 0, // same as avg for now
+            'max' => $b['max'],
             'samples' => $b['samples'],
         ];
     }
@@ -156,7 +123,7 @@ body { background:var(--bg); color:var(--text); font-family:'Segoe UI',system-ui
 <body>
 <div class="header">
     <h1>📈 24小时在线曲线</h1>
-    <div class="info">每60秒刷新 · 自动记录快照</div>
+    <div class="info">每60秒刷新 · Java同步自动采集</div>
 </div>
 <div class="container">
     <div id="loading">加载中...</div>
@@ -174,7 +141,7 @@ body { background:var(--bg); color:var(--text); font-family:'Segoe UI',system-ui
             </div>
             <div id="emptyHint" class="empty-chart" style="display:none">
                 <div class="msg">📊 数据收集中</div>
-                <div class="sub">页面每60秒记录一次快照，积累数据后将自动生成曲线</div>
+                <div class="sub">Java 插件同步/心跳每60秒自动采集（停服时段记0防假数据），积累后自动生成曲线</div>
             </div>
         </div>
         <div class="refresh-hint" id="refreshHint"></div>