diff --git a/assets/game-api.js b/assets/game-api.js
index b187954..3a00622 100644
--- a/assets/game-api.js
+++ b/assets/game-api.js
@@ -1,6 +1,8 @@
 // 宇森游戏 · 前端与 Odoo 通信层
 // 本地调试：前端 8888 -> Odoo 8069（跨域，带调试 CORS 头）
 // 生产部署：前端与 Odoo 同域，由 nginx 代理 /game/*。
+// 说明：odoo.conf 已 db_name=yt_game 钉死库，URL 上的 ?db= 形同虚设，
+// 请求一律落到 yt_game；下列 game/* 沿用统一 API_CONFIG，yt_world/* 单独带 ?db=yt_game。
 
 const API_CONFIG = {
   base: (location.hostname === '127.0.0.1' && location.port === '8888')
@@ -60,17 +62,17 @@ const API = {
   },
   // ---------- 沙盘记忆（yt_world 模块） ----------
   async world() {
-    return (await fetch('/yt_world/api/world?db=game', { credentials: 'same-origin' })).json();
+    return (await fetch('/yt_world/api/world?db=yt_game', { credentials: 'same-origin' })).json();
   },
   async saveTiles(tiles) {
-    return (await fetch('/yt_world/api/tiles/save?db=game', {
+    return (await fetch('/yt_world/api/tiles/save?db=yt_game', {
       method: 'POST', credentials: 'same-origin',
       headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify({ tiles }),
     })).json();
   },
   async saveSettings(settings) {
-    return (await fetch('/yt_world/api/settings?db=game', {
+    return (await fetch('/yt_world/api/settings?db=yt_game', {
       method: 'POST', credentials: 'same-origin',
       headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify({ settings }),
diff --git a/world.html b/world.html
index b0d9eb9..d4da67f 100644
--- a/world.html
+++ b/world.html
@@ -17,25 +17,52 @@ body { background: #0a0e17; overflow: hidden; font-family: 'Microsoft YaHei', sa
 #gameCanvas.canDrag { cursor: grab; }
 
 #topBar {
-  position: fixed; top: 0; left: 0; right: 0; height: 44px;
-  background: linear-gradient(180deg, rgba(10,14,23,0.95) 0%, rgba(10,14,23,0.7) 100%);
-  display: flex; align-items: center; padding: 0 16px;
-  border-bottom: 1px solid rgba(100,200,255,0.2);
-  z-index: 100; backdrop-filter: blur(8px);
+  position: fixed; top: 0; left: 0; right: 0; height: 58px;
+  background: #0a0e17;
+  display: flex; align-items: center; padding: 0 18px;
+  border-bottom: 1px solid rgba(139,92,246,.35);
+  z-index: 100;
   pointer-events: none;
+  color: #e9edf6; font-family: "Noto Sans SC", system-ui, sans-serif;
 }
 #topBar .title {
-  font-size: 15px; font-weight: bold;
-  background: linear-gradient(90deg, #4af, #a8e6cf);
+  font-size: 18px; font-weight: 700;
+  background: linear-gradient(90deg, #7cc7ff, #b6f0d4);
   -webkit-background-clip: text; -webkit-text-fill-color: transparent;
-  display: flex; align-items: center; gap: 8px;
+  display: flex; align-items: center; gap: 10px;
 }
-#topBar .title img { width: 30px; height: 30px; border-radius: 6px; box-shadow: 0 0 10px rgba(74,175,255,0.45); }
+#topBar .title img { width: 34px; height: 34px; border-radius: 7px; box-shadow: 0 0 12px rgba(74,175,255,.5); }
 #topBar .title .worldName {
-  font-size: 13px; font-weight: 600; color: #bcd0e6; -webkit-text-fill-color: #bcd0e6;
-  margin-left: 8px; padding-left: 8px; border-left: 1px solid rgba(255,255,255,0.25);
+  font-size: 15px; font-weight: 600; color: #cfe1f3; -webkit-text-fill-color: #cfe1f3;
+  margin-left: 10px; padding-left: 10px; border-left: 1px solid rgba(255,255,255,.28);
 }
-#topBar .coords { margin-left: auto; font-size: 12px; color: #8899aa; }
+#topBar .coords { font-size: 14px; color: #a8b8cc; }
+
+/* ===== 顶部右侧用户区（融合进 #topBar，恒在最右侧） ===== */
+#topBar .userArea{position:relative;margin-left:auto;pointer-events:auto;}
+#topBar .ua-trigger{display:flex;align-items:center;gap:8px;background:rgba(139,92,246,.18);
+  border:1px solid rgba(139,92,246,.5);color:#e9edf6;padding:7px 14px;border-radius:999px;
+  font:inherit;font-size:14px;font-weight:500;cursor:pointer;transition:.2s;}
+#topBar .ua-trigger:hover{background:rgba(139,92,246,.32);border-color:#a78bfa;}
+#topBar .ua-avatar{width:22px;height:22px;border-radius:50%;
+  background:linear-gradient(135deg,#c77dff,#4af);display:inline-flex;align-items:center;justify-content:center;
+  font-size:11px;color:#fff;font-weight:700;}
+#topBar .ua-name{font-weight:600;color:#c77dff;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
+#topBar .ua-caret{font-size:10px;color:#9aa6c4;transition:transform .2s;}
+#topBar .ua-trigger[aria-expanded="true"] .ua-caret{transform:rotate(180deg);}
+#topBar .ua-menu{position:absolute;top:calc(100% + 8px);right:0;min-width:200px;
+  background:#0e1428;border:1px solid rgba(139,92,246,.45);border-radius:12px;padding:6px;
+  box-shadow:0 10px 28px rgba(0,0,0,.55);display:none;z-index:120;}
+#topBar .ua-menu.open{display:block;animation:uaSlide .18s ease-out;}
+@keyframes uaSlide{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:translateY(0);}}
+#topBar .ua-item{display:flex;align-items:center;justify-content:space-between;width:100%;
+  background:transparent;border:none;color:#cfd5ea;padding:9px 12px;border-radius:8px;
+  font:inherit;font-size:14px;cursor:pointer;text-align:left;transition:.15s;}
+#topBar .ua-item:not(:disabled):hover{background:rgba(139,92,246,.2);color:#fff;}
+#topBar .ua-item:disabled{opacity:.5;cursor:not-allowed;}
+#topBar .ua-item--danger:not(:disabled):hover{background:rgba(239,68,68,.22);color:#ffb4b4;}
+#topBar .ua-sep{height:1px;background:rgba(255,255,255,.08);margin:5px 4px;}
+#topBar .ua-soon{font-size:10px;color:#778;background:rgba(255,255,255,.06);padding:1px 6px;border-radius:8px;}
 
 /* 主沙盘底部功能框架（预留区：放功能按钮 / 素材槽，比微观边框更高） */
 #bottomBar {
@@ -351,18 +378,12 @@ body { background: #0a0e17; overflow: hidden; font-family: 'Microsoft YaHei', sa
 #authSplash{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;
   background:linear-gradient(160deg,#080c1a,#0e1730 48%,#15213f);color:#9aa6c4;
   font-family:"Noto Sans SC",system-ui,sans-serif;font-size:15px;letter-spacing:3px;}
-#authBar{position:fixed;top:8px;right:16px;z-index:110;display:none;align-items:center;gap:8px;
-  padding:5px 12px;border-radius:999px;background:rgba(10,16,30,.85);backdrop-filter:blur(10px);
-  border:1px solid rgba(255,255,255,.14);font-family:"Noto Sans SC",system-ui,sans-serif;font-size:12px;color:#e9edf6;}
-#authBar .ab-name{color:#c77dff;font-weight:500;}
-#authBar .ab-logout{cursor:pointer;color:#9aa6c4;border:1px solid rgba(255,255,255,.18);background:transparent;border-radius:8px;padding:4px 10px;font-family:inherit;font-size:12px;transition:.2s;}
-#authBar .ab-logout:hover{color:#fff;border-color:#8b5cf6;}
+/* #authBar 已融合进 #topBar .userArea */
 
 </style>
 </head>
 <body>
 <div id="authSplash">登录校验中…</div>
-<div id="authBar"><span class="ab-name"></span><button class="ab-logout" type="button">退出</button></div>
 
 <!-- 加载界面 -->
 <div id="loadingScreen">
@@ -380,6 +401,19 @@ body { background: #0a0e17; overflow: hidden; font-family: 'Microsoft YaHei', sa
   <span class="title"><img src="assets/ui/logo_planet_48.png" alt=""><span class="brand">宇森</span><span class="worldName" id="worldName">大地</span></span>
   <button id="buildToggle">🔨 建造</button>
   <span class="coords" id="coords">坐标: (0, 0)</span>
+  <div class="userArea" id="userArea" hidden>
+    <button class="ua-trigger" id="uaTrigger" type="button" aria-haspopup="true" aria-expanded="false">
+      <span class="ua-avatar">●</span>
+      <span class="ua-name" id="uaName">用户</span>
+      <span class="ua-caret">▾</span>
+    </button>
+    <div class="ua-menu" id="uaMenu" role="menu">
+      <button class="ua-item" type="button" role="menuitem" disabled>设置 <span class="ua-soon">soon</span></button>
+      <button class="ua-item" type="button" role="menuitem" disabled>消息 <span class="ua-soon">soon</span></button>
+      <div class="ua-sep"></div>
+      <button class="ua-item ua-item--danger" id="uaLogout" type="button" role="menuitem">退出登录</button>
+    </div>
+  </div>
 </div>
 
 <!-- 主沙盘底部功能框架（预留区，放功能按钮 / 素材槽） -->
@@ -487,7 +521,6 @@ body { background: #0a0e17; overflow: hidden; font-family: 'Microsoft YaHei', sa
       <div class="panel-section">
         <div class="panel-label">地块信息</div>
         <div class="panel-value" id="detailTerrain">🟢 平原</div>
-        <div class="panel-value" id="detailCoords">坐标: (0, 0)</div>
       </div>
       <div class="panel-section">
         <div class="panel-label">建筑</div>
@@ -519,7 +552,7 @@ body { background: #0a0e17; overflow: hidden; font-family: 'Microsoft YaHei', sa
 
 <!-- 背景切换面板 -->
 <style>
-#buildToggle{margin-left:14px;background:rgba(100,200,255,.12);border:1px solid rgba(100,200,255,.3);color:#9fd;padding:5px 12px;border-radius:8px;font-size:13px;cursor:pointer;pointer-events:auto;transition:.2s;}
+#buildToggle{margin-left:14px;background:rgba(100,200,255,.12);border:1px solid rgba(100,200,255,.3);color:#9fd;padding:7px 14px;border-radius:8px;font-size:14px;cursor:pointer;pointer-events:auto;transition:.2s;}
 #buildToggle:hover{background:rgba(100,200,255,.22);}
 #buildToggle.active{background:linear-gradient(135deg,#8b5cf6,#4aafff);color:#fff;border-color:transparent;box-shadow:0 0 14px rgba(100,170,255,.5);}
 #buildPanel{position:fixed;left:16px;top:64px;z-index:60;width:440px;max-height:82vh;overflow-y:auto;background:linear-gradient(180deg,rgba(12,16,28,.98),rgba(16,24,44,.98));border:1px solid rgba(120,200,255,.28);border-radius:16px;box-shadow:0 12px 40px rgba(0,0,0,.55);color:#e8eef6;font-size:15px;padding:20px;backdrop-filter:blur(8px);}
@@ -676,6 +709,7 @@ function applyHeight(tile, dir, skipStroke) {
   const target = Math.max(MIN_HEIGHT, Math.min(MAX_HEIGHT, old + dir));
   if (target === old) return;                 // 已到上限/下限，无变化
   setHeight(tile, target, true);              // 玩家改高度→随机一张对应地形贴图
+  markDirty(tile.q, tile.r);
   // 高度工具下，左右键/滚轮升降时实时同步滑块与标签（修复：升降时滑块不跟随）
   const sl = document.getElementById('bpHeightSlider');
   const lb = document.getElementById('bpHeightVal');
@@ -1370,6 +1404,31 @@ function drawHexPrism(cx, cyTop, topR, wallH, topColor, hover, tile) {
              hover ? 'rgba(120,210,255,0.55)' : null, hover ? 1.5 : 0);
     return;
   }
+  // 交互期轻量路径：跳过 paintWallTexture(6面贴图)/paintHexTexture(顶面)/getTileFast(邻居)/径向渐变，
+  // 用纯色兜底最大化每帧吞吐；camInteracting 由松手 200ms 后自动置 false，下帧恢复完整绘制
+  if (camInteracting && tile) {
+    const top = prismTopPoints(cx, cyTop, topR);
+    ctx.save();
+    // 6 面合并为一个 path，纯色 fill
+    ctx.fillStyle = shadeColor(base, Math.max(-20, dim * 0.7 - 6));
+    ctx.beginPath();
+    ctx.moveTo(top[0].x, top[0].y);
+    for (let i = 0; i < SIDES; i++) {
+      const a = top[i], b = top[(i + 1) % SIDES];
+      ctx.lineTo(b.x, b.y);
+      ctx.lineTo(b.x, b.y + wallH);
+    }
+    ctx.closePath();
+    ctx.fill();
+    // 顶面覆盖（单色，比 createRadialGradient 轻得多）
+    ctx.fillStyle = shadeColor(base, Math.max(0, dim * 0.5) + 3);
+    ctx.beginPath();
+    for (let i = 0; i < SIDES; i++) ctx.lineTo(top[i].x, top[i].y);
+    ctx.closePath();
+    ctx.fill();
+    ctx.restore();
+    return;
+  }
   const sun = currentPalette.sun;
   const top = prismTopPoints(cx, cyTop, topR);
   // 高度阴影：整块投下柔和投影，强化起伏层次（夜/低光下投影略重，但不超 0.30）
@@ -1795,8 +1854,9 @@ function startMicroRender() {
     const mW = microCanvas.width, mH = microCanvas.height;
     const terrain = TERRAIN[microState.tile.terrain];
 
-    // ---- 清空画布 ----
-    microCtx.clearRect(0, 0, mW, mH);
+    // ---- 不透明兜底：避免 clearRect 透出 body 黑底造成"黑影闪" ----
+    microCtx.fillStyle = '#0a0e17';
+    microCtx.fillRect(0, 0, mW, mH);
 
     // ---- 套缩放+平移变换（场景内容随 zoom/pan 移动）----
     microCtx.save();
@@ -1990,7 +2050,10 @@ function onMicroMove(e) {
   }
   if (!microSwipe || !microSwipe.active) return;
   const p = getMicroPoint(e);
-  microSwipe.x = p.x; microSwipe.y = p.y;
+  // 边界约束：跟手最大 ±320px（足以判断切地块方向），防止画面被拖到浮岛外
+  const SWIPE_MAX = 320;
+  microSwipe.x = Math.max(microSwipe.x0 - SWIPE_MAX, Math.min(microSwipe.x0 + SWIPE_MAX, p.x));
+  microSwipe.y = Math.max(microSwipe.y0 - SWIPE_MAX, Math.min(microSwipe.y0 + SWIPE_MAX, p.y));
 }
 function onMicroUp(e) {
   if (!microState) return;
@@ -2495,6 +2558,7 @@ canvas.addEventListener('wheel', e => {
   camInteracting = true;
   clearTimeout(_camIntT);
   _camIntT = setTimeout(() => { camInteracting = false; }, 200);
+  scheduleSettingsSave();   // 相机缩放后防抖存后端
   // 更新光标状态
   canvas.classList.add('canDrag');
 }, { passive: false });
@@ -2581,6 +2645,7 @@ canvas.addEventListener('mouseup', e => {
   if (!isMouseDown) return;
   isMouseDown = false;
   camInteracting = false;   // 松手：恢复阴影投影与每帧重建（静止帧细节回到位）
+  if (hasDragged) scheduleSettingsSave();   // 平移过则防抖存相机位
   canvas.classList.remove('dragging');
 
   // 建造模式 · 移动工具：拖拽/点击交换板块
@@ -2637,6 +2702,7 @@ function handleBuildClick(tile) {
     tile.terrain = buildBrush;
     tile.height = terrainToHeight(buildBrush);
     tile.tier = heightToTier(tile.height);    // tier 从 height 派生，与渲染一致
+    markDirty(tile.q, tile.r);
   }
   // 素材变体：random=按坐标确定性取一张（固定到该格，刷新一致）；指定=用玩家选的下标
   const arr = TERRAIN_ASSETS[buildBrush];
@@ -2659,6 +2725,7 @@ function swapTiles(a, b) {
     tile.terrain = heightToTerrain(tile.height);
     tile.tier = heightToTier(tile.height);
   });
+  markDirty(a.q, a.r); markDirty(b.q, b.r);
   swapFlashes.push({ a: { q: a.q, r: a.r }, b: { q: b.q, r: b.r }, life: 1 });
 }
 
@@ -2720,6 +2787,7 @@ function setupBuildUI() {
     bpHeightVal.textContent = heightLabel(heightTarget);
     if (buildMode && buildTool === 'height' && currentLayer === 'earth' && hoveredTile) {
       setHeight(hoveredTile, heightTarget, true);   // 滑块拖动改高度→随机一张贴图
+      markDirty(hoveredTile.q, hoveredTile.r);
     }
   };
   bpHeightSlider.addEventListener('input', onHeightSlide);
@@ -2742,7 +2810,7 @@ function setupBuildUI() {
   const bpFlatten = document.getElementById('bpFlatten');
   bpFlatten.onclick = () => {
     if (!confirm('平铺：把所有地块高度设为最低（1）？当前起伏将丢失。')) return;
-    for (const t of tiles) setHeight(t, MIN_HEIGHT);
+    for (const t of tiles) { setHeight(t, MIN_HEIGHT); markDirty(t.q, t.r); }
     heightTarget = MIN_HEIGHT;
     bpHeightSlider.value = String(MIN_HEIGHT);
     bpHeightVal.textContent = heightLabel(MIN_HEIGHT);
@@ -2752,11 +2820,9 @@ function setupBuildUI() {
 }
 
 // 保存 / 恢复沙盘（地形与板块交换结果持久化到 localStorage）
+// 后端记忆：保存按钮直接触发增量 flush（flushSave 内部自带 ✅/⚠ 反馈）
 function saveWorld(btn) {
-  try {
-    localStorage.setItem('world_sandbox_tiles', JSON.stringify(tiles));
-    if (btn) { const t = btn.textContent; btn.textContent = '✅ 已保存'; setTimeout(() => { btn.textContent = t; }, 1200); }
-  } catch(e) { if (btn) { btn.textContent = '⚠ 失败'; setTimeout(() => { btn.textContent = '保存'; }, 1400); } }
+  flushSave(btn);
 }
 function loadSavedWorld() {
   try {
@@ -2778,6 +2844,81 @@ function loadSavedWorld() {
   } catch(e) {}
 }
 
+// ============ 后端记忆：地块增量持久化（yt_world 模块） ============
+// 底图由坐标确定性生成（generateMap），只把"玩家改动的地块"增量存后端。
+let dirtyTiles = new Set();           // "q,r" 集合：待保存的改动地块
+let saveTimer = null;
+let settingsTimer = null;
+
+function markDirty(q, r) {
+  dirtyTiles.add(q + ',' + r);
+  scheduleSave();
+}
+function scheduleSave() {
+  if (saveTimer) clearTimeout(saveTimer);
+  saveTimer = setTimeout(() => flushSave(), 800);
+}
+async function flushSave(btn) {
+  if (saveTimer) { clearTimeout(saveTimer); saveTimer = null; }
+  if (!dirtyTiles.size) {
+    if (btn) { btn.textContent = '✅ 已保存'; setTimeout(() => { btn.textContent = '保存'; }, 1200); }
+    return;
+  }
+  // 收集改动地块（仅大地层）
+  const byKey = new Map();
+  for (const t of tiles) if (t.layer === 'earth') byKey.set(t.q + ',' + t.r, t);
+  const batch = [];
+  for (const key of dirtyTiles) {
+    const t = byKey.get(key);
+    if (!t) continue;
+    batch.push({ q: t.q, r: t.r, terrain: t.terrain || null, height: t.height, flags: t.flags || {} });
+  }
+  dirtyTiles.clear();
+  const oldText = btn ? btn.textContent : null;
+  try {
+    await API.saveTiles(batch);
+    if (btn) { btn.textContent = '✅ 已保存'; setTimeout(() => { btn.textContent = '保存'; }, 1200); }
+  } catch (e) {
+    for (const b of batch) dirtyTiles.add(b.q + ',' + b.r);   // 失败重试：重新标脏
+    if (btn) { btn.textContent = '⚠ 失败'; setTimeout(() => { btn.textContent = oldText || '保存'; }, 1400); }
+  }
+}
+// 启动：用后端存档覆盖底图（地形/高度/flags 原地覆盖，不重跑建筑随机）
+function applyWorldState(ws) {
+  if (!ws) return;
+  if (ws.settings) applyWorldSettings(ws.settings);
+  if (!Array.isArray(ws.tiles)) return;
+  const byKey = new Map();
+  for (const t of tiles) if (t.layer === 'earth') byKey.set(t.q + ',' + t.r, t);
+  for (const ov of ws.tiles) {
+    const t = byKey.get(ov.q + ',' + ov.r);
+    if (!t) continue;
+    if (ov.terrain) t.terrain = ov.terrain;
+    if (ov.height != null) { t.height = ov.height; t.tier = heightToTier(ov.height); }
+    if (ov.flags) t.flags = ov.flags;
+  }
+}
+// 相机/UI 偏好收集 + 防抖保存
+function collectWorldSettings() {
+  return { camera: { x: camera.x, y: camera.y, zoom: camera.zoom } };
+}
+function applyWorldSettings(s) {
+  if (!s || !s.camera) return;
+  const c = s.camera;
+  if (typeof c.x === 'number') camera.x = c.x;
+  if (typeof c.y === 'number') camera.y = c.y;
+  if (typeof c.zoom === 'number') camera.zoom = c.zoom;
+}
+function scheduleSettingsSave() {
+  if (settingsTimer) clearTimeout(settingsTimer);
+  settingsTimer = setTimeout(flushSettings, 1000);
+}
+async function flushSettings() {
+  settingsTimer = null;
+  try { await API.saveSettings(collectWorldSettings()); }
+  catch (e) { /* 设置非关键，静默 */ }
+}
+
 // ESC退出微观世界
 document.addEventListener('keydown', e => { if (e.key === 'Escape') exitMicroWorld(); });
 document.getElementById('backBtn').addEventListener('click', exitMicroWorld);
@@ -3116,7 +3257,7 @@ window.addEventListener('resize', () => {
 
 loadSavedRatio();   // 应用上次保存的地表比例
 generateMap();
-loadSavedWorld();   // 有存档则恢复玩家建造结果
+// 注意：地表改动不再走 localStorage，统一由登录闸门拉取后端存档 applyWorldState 覆盖
 init();
 </script>
   <script src="assets/game-api.js"></script>
@@ -3124,16 +3265,34 @@ init();
   // ===== 登录闸门：未登录跳登录页；已登录显示昵称+退出 =====
   (async () => {
     const splash = document.getElementById('authSplash');
-    const bar = document.getElementById('authBar');
+    const area = document.getElementById('userArea');
+    const trigger = document.getElementById('uaTrigger');
+    const menu = document.getElementById('uaMenu');
     try {
       const me = await API.me();
       if (!me || !me.uid) { location.replace('login.html?next=world.html'); return; }
-      bar.querySelector('.ab-name').textContent = me.name || me.login;
-      bar.style.display = 'flex';
-      bar.querySelector('.ab-logout').onclick = async () => {
+      document.getElementById('uaName').textContent = me.name || me.login;
+      area.hidden = false;
+      // 拉取后端地表记忆（yt_world）：确定性底图 + 玩家增量覆盖，叠加到当前 tiles
+      try {
+        const ws = await API.world();
+        applyWorldState(ws);
+      } catch (e) {
+        console.warn('加载世界存档失败，使用确定性底图', e);
+      }
+      trigger.addEventListener('click', (ev) => {
+        ev.stopPropagation();
+        const open = menu.classList.toggle('open');
+        trigger.setAttribute('aria-expanded', open ? 'true' : 'false');
+      });
+      document.addEventListener('click', () => {
+        menu.classList.remove('open');
+        trigger.setAttribute('aria-expanded', 'false');
+      });
+      document.getElementById('uaLogout').addEventListener('click', async () => {
         try { await API.logout(); } catch (e) {}
         location.replace('login.html');
-      };
+      });
     } catch (e) {
       location.replace('login.html?next=world.html'); return;
     } finally {