feat(web): AI 工作台意图规划与规划思考模型

- 新增 workbenchAiIntentPlannerModel，基于 LLM function_call 解析建单/草稿/提交意图，区分 model 与 rule_fallback 来源
- 新增 workbenchAiPlanningThinkingModel 合并规划思考事件流，按 eventId 去重合并
- application gate/preview 模型接入意图规划，usePersonalWorkbenchAiMode/useWorkbenchAiStewardFlow/useWorkbenchAiActionRouter 链路适配，支持上下文提交
- steward 服务与 stewardPlanModel 适配新动作结构，receipt-folder-view 微调样式
- 新增 intent-planner-model/application-context-submit/steward-actions-service 测试，更新 gate-model/action-router/plan-message-copy/fast-preview 测试

web/src/assets/styles/views/receipt-folder-view.css

@@ -549,59 +549,156 @@
 }
 
 .associate-hint {
-  margin: 0;
+  margin: 0 0 2px 0;
   color: #64748b;
   font-size: 13px;
+  line-height: 1.4;
 }
 
 .receipt-checkbox-list,
 .draft-choice-list {
-  max-height: 360px;
+  max-height: 340px;
   display: grid;
   gap: 8px;
   overflow-y: auto;
+  padding: 1px;
 }
 
 .receipt-checkbox-list :deep(.el-checkbox),
 .draft-choice {
-  min-height: 50px;
+  display: flex !important;
+  min-height: 52px;
   align-items: center;
   margin-right: 0;
-  padding: 9px 10px;
-  border: 1px solid #dbe4ee;
+  padding: 10px 14px;
+  border: 1px solid #e2e8f0;
   border-radius: 4px;
   background: #fff;
+  transition: all 150ms ease;
+  box-sizing: border-box;
+}
+
+.receipt-checkbox-list :deep(.el-checkbox:hover),
+.draft-choice:hover {
+  border-color: #cbd5e1;
+  background: #f8fafc;
+}
+
+.receipt-checkbox-list :deep(.el-checkbox.is-checked) {
+  border-color: var(--theme-primary);
+  background: rgba(58, 124, 165, 0.04);
 }
 
 .receipt-checkbox-list :deep(.el-checkbox__label) {
+  flex: 1;
   display: grid;
-  gap: 3px;
+  gap: 2px;
   color: #0f172a;
-  font-weight: 750;
+  font-size: 13px;
+  font-weight: 600;
+  line-height: 1.35;
 }
 
 .receipt-checkbox-list small,
 .draft-choice small {
   color: #64748b;
-  font-size: 12px;
-  font-weight: 650;
+  font-size: 11.5px;
+  font-weight: 400;
+  line-height: 1.35;
 }
 
 .draft-choice {
   display: grid;
   grid-template-columns: auto minmax(0, 1fr);
-  gap: 9px;
+  gap: 10px;
   cursor: pointer;
 }
 
 .draft-choice.active {
-  border-color: rgba(58, 124, 165, .42);
-  background: rgba(58, 124, 165, .07);
+  border-color: var(--theme-primary);
+  background: rgba(58, 124, 165, 0.04);
 }
 
 .draft-choice span {
   display: grid;
-  gap: 3px;
+  gap: 2px;
+}
+
+.draft-choice strong {
+  color: #0f172a;
+  font-size: 13px;
+  font-weight: 600;
+  line-height: 1.35;
+}
+
+/* Global styles for the association dialog */
+:global(.receipt-associate-dialog.el-dialog) {
+  border-radius: 6px;
+  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.12);
+}
+
+:global(.receipt-associate-dialog .el-dialog__header) {
+  padding: 20px 24px 12px 24px;
+  margin-right: 0;
+}
+
+:global(.receipt-associate-dialog .el-dialog__headerbtn) {
+  top: 20px;
+  right: 24px;
+}
+
+:global(.receipt-associate-dialog .el-dialog__title) {
+  font-size: 15px;
+  font-weight: 600;
+  color: #0f172a;
+}
+
+:global(.receipt-associate-dialog .el-dialog__body) {
+  padding: 0 24px 20px 24px;
+}
+
+:global(.receipt-associate-dialog .el-dialog__footer) {
+  padding: 12px 24px 16px 24px;
+  background: #f8fafc;
+  border-top: 1px solid #e2e8f0;
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+}
+
+:global(.receipt-associate-dialog .el-dialog__footer .apply-btn),
+:global(.receipt-associate-dialog .el-dialog__footer .ghost-btn) {
+  min-height: 36px;
+  height: 36px;
+  padding: 0 16px;
+  border-radius: 4px;
+  font-size: 13px;
+  font-weight: 500;
+  transition: all 150ms ease;
+}
+
+:global(.receipt-associate-dialog .el-dialog__footer .ghost-btn) {
+  border-color: #cbd5e1;
+  color: #334155;
+  background: #fff;
+}
+
+:global(.receipt-associate-dialog .el-dialog__footer .ghost-btn:hover) {
+  background: #f8fafc;
+  border-color: #94a3b8;
+  color: #0f172a;
+}
+
+:global(.receipt-associate-dialog .el-dialog__footer .apply-btn) {
+  background: var(--theme-primary);
+  border-color: var(--theme-primary);
+  color: #fff;
+}
+
+:global(.receipt-associate-dialog .el-dialog__footer .apply-btn:hover:not(:disabled)) {
+  background: var(--theme-primary-active);
+  border-color: var(--theme-primary-active);
+  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
 }
 
 @media (max-width: 1180px) {