fix(ui): adjust composer status layering

static/src/components/input/InputComposer.vue

@@ -1,72 +1,6 @@
 <template>
   <div class="input-area compact-input-area" ref="inputAreaRoot">
     <div class="stadium-input-wrapper" ref="stadiumShellOuter">
-      <transition name="floating-status-motion">
-        <div
-          v-if="floatingStatusVisible"
-          class="floating-project-status"
-          @click.stop
-        >
-          <span v-if="projectGitSummaryForRender" class="floating-project-status__left">
-            <span class="floating-project-status__menu-wrap">
-              <button
-                type="button"
-                class="floating-project-status__button floating-project-status__button--project"
-                :class="{ 'floating-project-status__button--active': projectGitMenuOpen === 'project' }"
-                @click.stop="toggleProjectGitMenu('project')"
-              >
-                {{ projectGitSummaryForRender.projectName }}
-              </button>
-              <div
-                v-if="projectGitMenuOpen === 'project'"
-                class="floating-project-status__submenu floating-project-status__submenu--project"
-                @click.stop
-              >
-                <button type="button" @click.stop="openProjectInFileManager">在文件管理器中打开</button>
-                <button type="button" @click.stop="copyProjectPath">复制地址</button>
-              </div>
-            </span>
-            <span class="floating-project-status__menu-wrap">
-              <button
-                type="button"
-                class="floating-project-status__button floating-project-status__button--branch"
-                :class="{ 'floating-project-status__button--active': projectGitMenuOpen === 'branch' }"
-                @click.stop="toggleProjectGitMenu('branch')"
-              >
-                {{ projectGitSummaryForRender.branch }}
-              </button>
-              <div
-                v-if="projectGitMenuOpen === 'branch'"
-                class="floating-project-status__submenu floating-project-status__submenu--branch"
-                @click.stop
-              >
-                <button type="button" @click.stop="copyProjectBranch">复制分支名称</button>
-              </div>
-            </span>
-          </span>
-          <span class="floating-project-status__right">
-            <span v-if="goalRunning" class="floating-project-status__notice">目标模式运行中</span>
-            <span v-else-if="goalModeArmed" class="floating-project-status__notice">目标模式就绪</span>
-            <button
-              v-if="userQuestionMinimized && pendingUserQuestionCount > 0"
-              type="button"
-              class="floating-project-status__notice floating-project-status__notice--button"
-              @click.stop="$emit('restore-user-question')"
-            >
-              等待回答问题
-            </button>
-            <button
-              v-if="projectGitSummaryForRender"
-              type="button"
-              class="floating-project-status__stats"
-              @click.stop="$emit('open-git-changes-panel')"
-            >
-              <span class="floating-project-status__add">+{{ projectGitSummaryForRender.additions }}</span>
-              <span class="floating-project-status__del">-{{ projectGitSummaryForRender.deletions }}</span>
-            </button>
-          </span>
-        </div>
-      </transition>
       <div
         class="runtime-queue-list"
         :class="{ 'runtime-queue-list--empty': !runtimeQueuedMessagesForRender.length }"
@@ -136,6 +70,72 @@
           </div>
         </div>
       </transition>
+      <transition name="floating-status-motion">
+        <div
+          v-if="floatingStatusVisible"
+          class="floating-project-status"
+          @click.stop
+        >
+          <span v-if="projectGitSummaryForRender" class="floating-project-status__left">
+            <span class="floating-project-status__menu-wrap">
+              <button
+                type="button"
+                class="floating-project-status__button floating-project-status__button--project"
+                :class="{ 'floating-project-status__button--active': projectGitMenuOpen === 'project' }"
+                @click.stop="toggleProjectGitMenu('project')"
+              >
+                {{ projectGitSummaryForRender.projectName }}
+              </button>
+              <div
+                v-if="projectGitMenuOpen === 'project'"
+                class="floating-project-status__submenu floating-project-status__submenu--project"
+                @click.stop
+              >
+                <button type="button" @click.stop="openProjectInFileManager">在文件管理器中打开</button>
+                <button type="button" @click.stop="copyProjectPath">复制地址</button>
+              </div>
+            </span>
+            <span class="floating-project-status__menu-wrap">
+              <button
+                type="button"
+                class="floating-project-status__button floating-project-status__button--branch"
+                :class="{ 'floating-project-status__button--active': projectGitMenuOpen === 'branch' }"
+                @click.stop="toggleProjectGitMenu('branch')"
+              >
+                {{ projectGitSummaryForRender.branch }}
+              </button>
+              <div
+                v-if="projectGitMenuOpen === 'branch'"
+                class="floating-project-status__submenu floating-project-status__submenu--branch"
+                @click.stop
+              >
+                <button type="button" @click.stop="copyProjectBranch">复制分支名称</button>
+              </div>
+            </span>
+          </span>
+          <span class="floating-project-status__right">
+            <span v-if="goalRunning" class="floating-project-status__notice">目标模式运行中</span>
+            <span v-else-if="goalModeArmed" class="floating-project-status__notice">目标模式就绪</span>
+            <button
+              v-if="userQuestionMinimized && pendingUserQuestionCount > 0"
+              type="button"
+              class="floating-project-status__notice floating-project-status__notice--button"
+              @click.stop="$emit('restore-user-question')"
+            >
+              等待回答问题
+            </button>
+            <button
+              v-if="projectGitSummaryForRender"
+              type="button"
+              class="floating-project-status__stats"
+              @click.stop="$emit('open-git-changes-panel')"
+            >
+              <span class="floating-project-status__add">+{{ projectGitSummaryForRender.additions }}</span>
+              <span class="floating-project-status__del">-{{ projectGitSummaryForRender.deletions }}</span>
+            </button>
+          </span>
+        </div>
+      </transition>
       <div
         class="stadium-shell"
         ref="compactInputShell"
@@ -1459,22 +1459,30 @@ const collectComposerVisualHeight = () => {
   if (!root || !shell) {
     return 0;
   }
-  const shellRect = shell.getBoundingClientRect();
-  let top = shellRect.top;
-  let bottom = shellRect.bottom;
+  // 用 offset 布局坐标（offsetTop/offsetHeight）计算可视高度，而非 getBoundingClientRect。
+  // 后者会把进入/离开动画的 transform 一起算进去：状态栏进场时还停在 translateY(44px) 的低位，
+  // 测得的增长量≈0，要等 260ms 动画结束才量到真实高度、再迟一拍下降——表现为「先挡住、完全出现后才下降」。
+  // offset 系列只反映静止布局、不受 transform 影响，状态栏一挂载就按最终高度上报，
+  // 输入栏下降与状态栏出现动画得以同时发生。这些浮层与 shell 同为 .stadium-input-wrapper 的直接子节点，
+  // 其 offsetParent 一致，offsetTop 可直接比较。
+  let top = shell.offsetTop;
+  let bottom = shell.offsetTop + shell.offsetHeight;
   const slashMenu = root.querySelector('.skill-slash-menu');
   if (slashMenu instanceof HTMLElement) {
-    const rect = slashMenu.getBoundingClientRect();
-    return Math.max(0, Math.max(shellRect.bottom, rect.bottom) - Math.min(shellRect.top, rect.top));
+    const sTop = slashMenu.offsetTop;
+    const sBottom = slashMenu.offsetTop + slashMenu.offsetHeight;
+    return Math.max(0, Math.max(bottom, sBottom) - Math.min(top, sTop));
   }
   // 收起态横幅是脱离流、浮在角上的小圆点，不应计入为聊天区预留的高度，
   // 否则会把消息区可滚动范围顶高。故排除 .goal-mode-banner--collapsed。
   const nodes = root.querySelectorAll('.runtime-queue-list:not(.runtime-queue-list--empty), .floating-project-status');
   nodes.forEach((node) => {
     if (!(node instanceof HTMLElement)) return;
-    const rect = node.getBoundingClientRect();
-    top = Math.min(top, rect.top);
-    bottom = Math.max(bottom, rect.bottom);
+    // 离开态：floatingStatusVisible 已翻 false 但元素仍在 DOM 中做退场动画。
+    // 此时不再计入它的高度，让输入栏立即回升、与状态栏的退场动画同步。
+    if (node.classList.contains('floating-project-status') && !floatingStatusVisible.value) return;
+    top = Math.min(top, node.offsetTop);
+    bottom = Math.max(bottom, node.offsetTop + node.offsetHeight);
   });
   return Math.max(0, bottom - top);
 };
@@ -1807,9 +1815,9 @@ onBeforeUnmount(() => {
 <style scoped>
 .floating-project-status {
   position: absolute;
-  left: calc(50% - 7px);
+  left: calc(5% - 7px);
   bottom: calc(100% + 6px);
-  z-index: 45;
+  z-index: auto;
   width: 90%;
   max-width: 90%;
   height: 34px;
@@ -1822,7 +1830,6 @@ onBeforeUnmount(() => {
   border-radius: 14px;
   background: var(--theme-surface-muted);
   box-shadow: none;
-  transform: translateX(-50%);
   pointer-events: auto;
 }
 
@@ -1992,18 +1999,22 @@ onBeforeUnmount(() => {
     opacity 180ms ease,
     transform 260ms cubic-bezier(0.25, 0.8, 0.25, 1);
   transform-origin: bottom center;
+  will-change: transform, opacity;
+  /* 状态栏本体永远在最底层：输入栏 shell(z-index:2) > / 菜单(z-index:1) > 状态栏(auto)。
+     不在这里设置 z-index，避免创建低层 stacking context 后把二级菜单也压在输入栏下。 */
+  z-index: auto;
 }
 
 .floating-status-motion-enter-from,
 .floating-status-motion-leave-to {
   opacity: 0;
-  transform: translateX(-50%) translateY(44px);
+  transform: translateY(44px);
 }
 
 .floating-status-motion-enter-to,
 .floating-status-motion-leave-from {
   opacity: 1;
-  transform: translateX(-50%) translateY(0);
+  transform: translateY(0);
 }
 
 /* 目标模式横幅：与 + 按钮左对齐，置于输入框上方 */

static/src/styles/components/input/_composer.scss

@@ -172,8 +172,21 @@
     will-change: transform, clip-path;
 }
 
+/* / 菜单始终高于状态栏本体、低于输入栏 shell(z-index:2)：
+   输入栏 > / 菜单 > 状态栏。本体状态栏不设置正 z-index，
+   只让状态栏二级菜单单独使用高 z-index。 */
+.skill-slash-menu-motion-enter-active,
+.skill-slash-menu-motion-leave-active {
+    z-index: 1;
+}
+
 .skill-slash-menu-motion-enter-from,
 .skill-slash-menu-motion-leave-to {
+    /* 底边锚定在输入框上沿（bottom:100%-2px），配合 clip-path 从底部揭开：
+       translateY(100%) 把元素整体下移一个自身高度后，再让 clip 的底部 inset 从 100%→0，
+       净效果是「可见底边始终钉在输入框上沿、可见顶边向上生长」，即从输入框上沿升起。
+       注意：不能改成 translateY(0)——那样 clip 会从元素静止态的顶部（在输入框上方一整个菜单高度处）
+       向下揭开，看起来像菜单从高空往下展开，正是要避免的「在状态栏上方出现」。 */
     transform: translateX(-50%) translateY(100%);
     clip-path: inset(0 0 100% 0 round 12px 12px 0 0);
 }
@@ -913,7 +926,10 @@ body[data-theme='dark'] {
 }
 
 .composer-container.blank-hero-mode {
-    transform: translateY(-38vh);
+    // 新对话居中态：当输入栏上方出现 git 状态栏或输入变多行时，整体可视高度会向上增长，
+    // 顶到欢迎文字。用已计算好的 --composer-growth-height 把输入栏整体下移同样的距离，
+    // 让栈顶回到「裸单行输入」时的位置，从而保证不遮挡欢迎文字。
+    transform: translateY(calc(-38vh + var(--composer-growth-height, 0px)));
 }
 
 @media (max-width: 768px) {
@@ -925,7 +941,7 @@ body[data-theme='dark'] {
         height: 44px;
     }
     .composer-container.blank-hero-mode {
-        transform: translateY(-32vh);
+        transform: translateY(calc(-32vh + var(--composer-growth-height, 0px)));
     }
     .blank-hero-overlay {
         padding-bottom: 120px;