feat: 报销预审会话状态管理与工作台交互增强

- 新增差旅报销会话状态管理与对话模型重构
- 增强风险观测服务与运行时聊天上下文作用域
- 优化工作台图标资源、助理意图识别与摘要工具
- 完善报销创建视图样式与差旅详情页标准调整交互
- 补充风险观测、运行时聊天与报销端点测试覆盖

web/src/assets/styles/components/personal-workbench-glass.css

@@ -70,13 +70,8 @@
 }
 
 .capability-icon {
-  border: 1px solid color-mix(in srgb, var(--capability-color) 18%, rgba(255, 255, 255, 0.68));
-  background:
-    linear-gradient(180deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.24)),
-    color-mix(in srgb, var(--capability-soft) 72%, transparent);
-  box-shadow:
-    inset 0 1px 0 rgba(255, 255, 255, 0.72),
-    inset 0 -1px 0 rgba(var(--theme-primary-rgb, 58, 124, 165), 0.08);
+  --workbench-list-icon-size: 40px;
+  --workbench-list-icon-art-size: 23px;
 }
 
 .workbench-card {

web/src/assets/styles/components/personal-workbench-insights.css

@@ -61,6 +61,8 @@
   grid-template-rows: auto minmax(0, 1fr);
 }
 
+/* .expense-stats-panel 的特殊背景已转移至全局的 .workbench-card */
+
 .insight-metric-list,
 .insight-profile-list {
   min-height: 0;
@@ -102,6 +104,23 @@
     rgba(var(--theme-primary-rgb, 58, 124, 165), 0.04);
 }
 
+/* 局部改造：让费用统计内层的小卡片也变为低透明度透镜，形成双层液态玻璃（Double Glassmorphism）的极品手感 */
+.expense-stats-panel .insight-metric-row {
+  background: rgba(255, 255, 255, 0.05) !important;
+  border-color: rgba(255, 255, 255, 0.2) !important;
+  border-left-color: rgba(255, 255, 255, 0.6) !important;
+  backdrop-filter: blur(8px) saturate(120%);
+  -webkit-backdrop-filter: blur(8px) saturate(120%);
+  box-shadow: 
+    0 4px 12px rgba(0, 0, 0, 0.03),
+    inset 0 1px 0 rgba(255, 255, 255, 0.3) !important;
+}
+
+.expense-stats-panel .insight-metric-row:hover {
+  background: rgba(255, 255, 255, 0.2) !important;
+  border-color: rgba(255, 255, 255, 0.4) !important;
+}
+
 .insight-metric-icon,
 .insight-profile-icon {
   display: inline-flex;

web/src/assets/styles/components/personal-workbench-responsive.css

@@ -304,9 +304,10 @@
   }
 
   .capability-icon {
+    --workbench-list-icon-size: 34px;
+    --workbench-list-icon-art-size: 20px;
     width: 34px;
     height: 34px;
-    font-size: 20px;
   }
 
   .capability-copy {

web/src/assets/styles/components/personal-workbench.css

@@ -33,6 +33,10 @@
   gap: 10px;
   overflow: visible;
   color: var(--workbench-ink);
+
+  /* 恢复极简纯净的页面底层 */
+  background: transparent;
+  background-color: var(--workbench-surface-soft);
 }
 
 .workbench :where(button, textarea) {
@@ -53,33 +57,33 @@
 .workbench :where(button:disabled) { cursor: not-allowed; opacity: 0.7; }
 
 .assistant-hero {
-  --assistant-bg-position: center right;
-  --assistant-bg-size: cover;
-  --assistant-readability-mask:
-    linear-gradient(90deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.86) 42%, rgba(255, 255, 255, 0.44) 68%, rgba(255, 255, 255, 0.18) 100%);
-  --assistant-theme-tint:
-    linear-gradient(135deg, rgba(var(--theme-primary-rgb, 58, 124, 165), 0.2) 0%, rgba(var(--theme-primary-rgb, 58, 124, 165), 0.07) 52%, rgba(var(--theme-primary-rgb, 58, 124, 165), 0.16) 100%);
   position: relative;
   z-index: 2;
   min-height: 0;
   overflow: hidden;
   padding: var(--hero-padding-top) 20px var(--hero-padding-bottom) 52px;
-  border: 1px solid color-mix(in srgb, var(--workbench-primary) 14%, var(--workbench-line));
-  border-radius: 4px;
-  background:
-    var(--assistant-readability-mask),
-    var(--assistant-theme-tint),
-    var(--assistant-bg-image) var(--assistant-bg-position) / var(--assistant-bg-size) no-repeat;
-  background-color: color-mix(in srgb, var(--workbench-primary-soft) 42%, #ffffff);
-  background-blend-mode: normal, color, luminosity;
-  backdrop-filter: blur(12px);
-  -webkit-backdrop-filter: blur(12px);
-  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.6);
+  border: 1px solid rgba(255, 255, 255, 0.9);
+  border-radius: 16px;
+  background: 
+    linear-gradient(125deg, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0.3) 40%, rgba(255, 255, 255, 0.1) 60%, rgba(255, 255, 255, 0.5) 100%);
+  background-color: transparent;
+  backdrop-filter: blur(40px) saturate(200%);
+  -webkit-backdrop-filter: blur(40px) saturate(200%);
+  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.04), inset 0 2px 4px rgba(255, 255, 255, 1);
   isolation: isolate;
 }
 
 .assistant-hero::after {
-  content: none;
+  content: "";
+  position: absolute;
+  top: 0;
+  right: 100px;
+  bottom: 0;
+  width: 50%;
+  min-width: 400px;
+  background: url("../../images/hero-financial-decor.svg") right center / auto 100% no-repeat;
+  pointer-events: none;
+  z-index: 0;
 }
 
 .assistant-hero::before {
@@ -140,6 +144,14 @@
   backdrop-filter: blur(4px);
 }
 
+.assistant-composer:focus-within {
+  border-color: rgba(var(--theme-primary-rgb, 58, 124, 165), 0.85);
+  box-shadow: 
+    0 0 0 4px rgba(var(--theme-primary-rgb, 58, 124, 165), 0.14),
+    0 16px 36px rgba(15, 23, 42, 0.06),
+    inset 0 1px 0 rgba(255, 255, 255, 0.96);
+}
+
 .assistant-composer textarea {
   width: 100%;
   min-width: 0;
@@ -317,19 +329,26 @@
 
 .capability-card {
   position: relative;
+  isolation: isolate;
   display: grid;
   grid-template-columns: 40px minmax(0, 1fr) 10px;
   align-items: center;
   gap: 14px;
   min-height: 0;
   padding: 17px 12px 17px 26px;
-  overflow: hidden;
-  border: 1px solid var(--workbench-line);
-  border-left: 3px solid color-mix(in srgb, var(--capability-color) 54%, var(--workbench-line));
-  border-radius: 4px;
-  background: var(--workbench-surface);
+  overflow: visible;
+  border: 1px solid rgba(255, 255, 255, 0.9);
+  border-left: 3px solid color-mix(in srgb, var(--capability-color) 80%, rgba(255, 255, 255, 0.9));
+  border-radius: 12px;
+  background: 
+    linear-gradient(125deg, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0.3) 40%, rgba(255, 255, 255, 0.1) 60%, rgba(255, 255, 255, 0.5) 100%);
+  background-color: transparent;
+  backdrop-filter: blur(40px) saturate(200%);
+  -webkit-backdrop-filter: blur(40px) saturate(200%);
   text-align: left;
-  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.035);
+  box-shadow: 
+    0 16px 32px rgba(0, 0, 0, 0.04),
+    inset 0 2px 4px rgba(255, 255, 255, 1);
   transition:
     border-color 180ms var(--ease),
     box-shadow 180ms var(--ease),
@@ -337,21 +356,33 @@
     transform 180ms var(--ease);
 }
 
+.capability-card::before {
+  content: "";
+  position: absolute;
+  inset: 0;
+  border-radius: inherit;
+  background:
+    linear-gradient(90deg, rgba(255, 255, 255, 0.28) 0%, rgba(255, 255, 255, 0.08) 42%, transparent 60%),
+    linear-gradient(135deg, rgba(var(--theme-primary-rgb, 58, 124, 165), 0.08), transparent 56%);
+  pointer-events: none;
+  z-index: 0;
+}
+
+.capability-card > * {
+  position: relative;
+  z-index: 1;
+}
+
 .capability-card::after {
   display: none;
 }
 
 .capability-icon {
+  --workbench-list-icon-size: 40px;
+  --workbench-list-icon-art-size: 23px;
   width: 40px;
   height: 40px;
-  display: grid;
-  place-items: center;
-  border-radius: 4px;
-  border: 1px solid color-mix(in srgb, var(--capability-color) 20%, #ffffff);
-  background: var(--capability-soft);
   color: var(--capability-color);
-  font-size: 24px;
-  box-shadow: none;
 }
 
 .capability-copy {
@@ -417,7 +448,7 @@
 
 .workbench-content-grid {
   display: grid;
-  grid-template-columns: minmax(560px, 1.45fr) minmax(320px, 0.82fr);
+  grid-template-columns: minmax(640px, 1.8fr) minmax(260px, 0.55fr);
   gap: 14px;
   align-items: stretch;
   min-height: 0;
@@ -425,14 +456,38 @@
 }
 
 .workbench-card {
+  position: relative;
+  isolation: isolate;
   min-height: 0;
   height: 100%;
-  overflow: hidden;
   padding: 12px 14px;
-  border: 1px solid var(--workbench-line);
-  border-radius: 4px;
-  background: var(--workbench-surface);
-  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.035);
+  background: 
+    linear-gradient(125deg, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0.3) 40%, rgba(255, 255, 255, 0.1) 60%, rgba(255, 255, 255, 0.5) 100%);
+  background-color: transparent;
+  backdrop-filter: blur(40px) saturate(200%);
+  -webkit-backdrop-filter: blur(40px) saturate(200%);
+  border: 1px solid rgba(255, 255, 255, 0.9);
+  border-radius: 16px;
+  box-shadow: 
+    0 16px 32px rgba(0, 0, 0, 0.04),
+    inset 0 2px 4px rgba(255, 255, 255, 1);
+}
+
+.workbench-card::before {
+  content: "";
+  position: absolute;
+  inset: 0;
+  border-radius: inherit;
+  background:
+    linear-gradient(90deg, rgba(255, 255, 255, 0.28) 0%, rgba(255, 255, 255, 0.08) 42%, transparent 60%),
+    linear-gradient(135deg, rgba(var(--theme-primary-rgb, 58, 124, 165), 0.08), transparent 56%);
+  pointer-events: none;
+  z-index: 1;
+}
+
+.workbench-card > * {
+  position: relative;
+  z-index: 2;
 }
 
 .progress-panel,

web/src/assets/styles/components/top-bar.css

@@ -472,20 +472,24 @@
 
 .notification-popover {
   position: absolute;
-  top: calc(100% + 8px);
+  top: calc(100% + 12px);
   right: 0;
   z-index: 60;
-  width: clamp(340px, 34vw, 420px);
+  width: 380px;
   max-width: calc(100vw - 24px);
   max-height: min(520px, calc(100vh - 96px));
-  display: grid;
-  grid-template-rows: auto auto minmax(0, 1fr);
+  display: flex;
+  flex-direction: column;
   gap: 0;
   overflow: hidden;
-  border: 1px solid #d7e0ea;
-  border-radius: 4px;
-  background: #fff;
-  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
+  border: 1px solid rgba(0, 0, 0, 0.06);
+  border-radius: 12px;
+  background: #ffffff;
+  box-shadow: 
+    0 16px 36px rgba(0, 0, 0, 0.08),
+    0 4px 12px rgba(0, 0, 0, 0.03),
+    0 0 1px rgba(0, 0, 0, 0.1);
+  overscroll-behavior-y: contain;
 }
 
 .notification-popover::before {
@@ -665,9 +669,11 @@
   max-height: min(336px, calc(100vh - 226px));
   overflow-x: hidden;
   overflow-y: auto;
-  padding: 6px 0;
+  padding: 4px 0 12px;
   scrollbar-width: thin;
   scrollbar-color: #cbd5e1 #f8fafc;
+  overscroll-behavior-y: contain;
+  scrollbar-gutter: stable;
 }
 
 .notification-list::-webkit-scrollbar {
@@ -687,13 +693,13 @@
   display: grid;
   grid-template-columns: 34px minmax(0, 1fr) 16px;
   align-items: center;
-  gap: 9px;
-  min-height: 0;
-  padding: 10px 14px;
+  gap: 12px;
+  min-height: 68px;
+  padding: 12px 16px;
   border: 0;
-  border-left: 3px solid transparent;
   border-radius: 0;
-  background: transparent;
+  background: #ffffff;
+  flex-shrink: 0;
   text-align: left;
   transition:
     background 180ms var(--ease),
@@ -705,16 +711,27 @@
 }
 
 .notification-row.unread {
-  border-left-color: var(--theme-primary-active);
-  background: linear-gradient(90deg, var(--theme-primary-light-9) 0%, #fff 42%);
+  background: #f8fafc;
+  position: relative;
+}
+
+.notification-row.unread::before {
+  content: '';
+  position: absolute;
+  left: 0;
+  top: 16px;
+  bottom: 16px;
+  width: 3px;
+  border-radius: 0 4px 4px 0;
+  background: var(--theme-primary-active);
 }
 
 .notification-row:hover {
-  background: #f8fafc;
+  background: #f1f5f9;
 }
 
 .notification-row.unread:hover {
-  background: linear-gradient(90deg, var(--theme-primary-light-8) 0%, #f8fafc 48%);
+  background: #f1f5f9;
 }
 
 .notification-type-icon {
@@ -722,11 +739,12 @@
   height: 34px;
   display: grid;
   place-items: center;
-  border: 1px solid var(--theme-primary-light-6);
-  border-radius: 4px;
-  background: #fff;
+  border: 1px solid rgba(0,0,0,0.04);
+  border-radius: 8px;
+  background: #ffffff;
   color: var(--theme-primary-active);
-  font-size: 18px;
+  font-size: 16px;
+  box-shadow: 0 1.5px 4px rgba(0,0,0,0.03);
 }
 
 .notification-type-icon.danger {
@@ -755,28 +773,29 @@
 
 .notification-copy {
   min-width: 0;
-  display: grid;
+  display: flex;
+  flex-direction: column;
   gap: 4px;
-}
-
-.notification-copy strong {
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
+  padding-top: 1px;
+  padding-bottom: 1px;
 }
 
 .notification-title-line {
   min-width: 0;
   display: flex;
   align-items: center;
-  gap: 6px;
+  gap: 8px;
 }
 
 .notification-copy strong {
   min-width: 0;
   color: #0f172a;
-  font-size: 13px;
-  font-weight: 800;
+  font-size: 13.5px;
+  font-weight: 750;
+  line-height: 1.3;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
 }
 
 .notification-title-line b {
@@ -796,22 +815,24 @@
 }
 
 .notification-copy small {
-  display: -webkit-box;
-  overflow: hidden;
-  color: #475569;
+  color: #64748b;
   font-size: 12px;
   line-height: 1.4;
-  white-space: normal;
-  -webkit-box-orient: vertical;
+  display: -webkit-box;
   -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  margin-bottom: 2px;
 }
 
 .notification-meta {
   min-width: 0;
   display: flex;
   align-items: center;
-  justify-content: space-between;
+  justify-content: flex-end;
   gap: 8px;
+  margin-top: 2px;
 }
 
 .notification-meta em,
@@ -827,7 +848,7 @@
 }
 
 .notification-meta em {
-  flex: 1 1 auto;
+  display: none;
 }
 
 .notification-meta time {

web/src/assets/styles/components/travel-reimbursement-message-item.css

@@ -22,6 +22,18 @@
   border-color: rgba(96, 165, 250, 0.3);
 }
 
+.message-stack {
+  min-width: 0;
+  display: grid;
+  justify-items: start;
+  gap: 8px;
+}
+
+.message-row.user .message-stack {
+  order: 1;
+  justify-items: end;
+}
+
 .message-avatar {
   width: 38px;
   height: 38px;
@@ -52,6 +64,94 @@
   box-shadow: 0 10px 22px rgba(148, 163, 184, 0.14);
 }
 
+.steward-intent-bubble {
+  width: min(100%, 680px);
+  border: 1px solid #c9ddea;
+  border-radius: 4px;
+  background: #eef6fb;
+  color: #1f3f5b;
+  box-shadow: 0 8px 18px rgba(148, 163, 184, 0.12);
+}
+
+.steward-intent-bubble[open] {
+  background: #f3f9fd;
+}
+
+.steward-intent-bubble summary {
+  min-height: 38px;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 0 12px;
+  cursor: pointer;
+  list-style: none;
+}
+
+.steward-intent-bubble summary::-webkit-details-marker {
+  display: none;
+}
+
+.steward-intent-bubble summary > span {
+  min-width: 0;
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  color: #234a68;
+  font-size: 12px;
+  font-weight: 820;
+}
+
+.steward-intent-bubble summary > span i {
+  color: #3a7ca5;
+  font-size: 14px;
+}
+
+.steward-intent-bubble summary small {
+  margin-left: auto;
+  color: #6f8295;
+  font-size: 12px;
+  font-weight: 720;
+}
+
+.steward-intent-bubble summary > i {
+  color: #64748b;
+  transition: transform 180ms ease;
+}
+
+.steward-intent-bubble[open] summary > i {
+  transform: rotate(180deg);
+}
+
+.steward-intent-event-list {
+  margin: 0;
+  padding: 0 12px 12px 30px;
+  display: grid;
+  gap: 7px;
+}
+
+.steward-intent-event-list li strong {
+  display: block;
+  color: #274b68;
+  font-size: 12px;
+  font-weight: 820;
+}
+
+.steward-intent-event-list li span {
+  display: block;
+  margin-top: 2px;
+  color: #5c7185;
+  font-size: 12px;
+  line-height: 1.55;
+}
+
+.steward-intent-empty {
+  margin: 0;
+  padding: 0 12px 12px;
+  color: #64748b;
+  font-size: 12px;
+  line-height: 1.55;
+}
+
 .message-bubble-application-preview {
   max-width: min(100%, 980px);
 }