修复项目页布局高度

项目页父级改为纵向 flex 并填满可用高度
项目列表容器与表格占满剩余空间
保留项目操作菜单现有定位逻辑

apps/ai-game-creator-shell/src/styles.css

@@ -820,12 +820,13 @@ textarea {
 }
 
 .launcher-projects-page {
-  align-content: start;
-  grid-template-rows: auto minmax(0, 1fr);
+  display: flex;
+  flex-direction: column;
   gap: 18px;
   width: calc(100vw - var(--launcher-sidebar-width));
   max-width: none;
-  height: 100dvh;
+  flex: 1 1 auto;
+  height: 100%;
   min-height: 0;
   margin: 0;
   padding: 92px 28px 24px;
@@ -833,7 +834,9 @@ textarea {
 }
 
 .launcher-main:has(.launcher-projects-page) {
-  height: 100dvh;
+  display: flex;
+  flex-direction: column;
+  height: 100%;
   min-height: 0;
   padding-bottom: 0;
 }
@@ -1004,8 +1007,9 @@ textarea {
 }
 
 .launcher-project-list-shell {
-  display: grid;
-  grid-template-rows: 42px minmax(0, 1fr);
+  display: flex;
+  flex-direction: column;
+  flex: 1 1 auto;
   min-height: 0;
   overflow: hidden;
   border: 1px solid var(--platform-surface-border);
@@ -1046,6 +1050,7 @@ textarea {
 .launcher-project-table {
   display: grid;
   align-content: start;
+  flex: 1 1 auto;
   min-height: 0;
   overflow-y: auto;
 }