fix: 优化采购申请页面会议纪要字段及动态配置

1. 统一会议纪要字段名称为校党委会议纪要
2. 部门自行采购会议纪要使用动态配置替代硬编码2000
3. 动态配置获取不到值时直接报错而非使用默认值
4. 调整部门自行采购会议纪要显示条件为金额>=2000

src/hooks/usePurchaseRules.ts

@@ -1,4 +1,4 @@
-import { ref, computed, watch } from 'vue';
+import { ref } from 'vue';
 import { evaluateRules, getEnabledRules } from '/@/api/purchase/purchasingRuleConfig';
 
 const RULE_CACHE_KEY = 'purchase_rule_cache';
@@ -65,26 +65,29 @@ export function usePurchaseRules() {
 
   const getThresholds = () => {
     const thresholds: Record<string, number> = {
-      deptPurchase: 50000,
-      feasibility: 300000,
-      publicSelect: 300000,
-      govPurchase: 1000000
+      deptPurchase: 0,
+      feasibility: 0,
+      publicSelect: 0,
+      govPurchase: 0,
+      deptSelfMeetingMinutes: 0
     };
 
-    rules.value.forEach(rule => {
-      if (rule.ruleCode === 'DEPT_PURCHASE_THRESHOLD' && rule.amountMax) {
-        thresholds.deptPurchase = Number(rule.amountMax);
+    const getRuleAmount = (code: string, defaultVal?: number) => {
+      const rule = rules.value.find(r => r.ruleCode === code);
+      if (!rule || rule.amountMin === undefined || rule.amountMin === null) {
+        if (defaultVal === undefined) {
+          throw new Error(`采购规则配置缺失: ${code}，请在系统配置中维护`);
+        }
+        return defaultVal;
       }
-      if (rule.ruleCode === 'FEASIBILITY_REPORT' && rule.amountMin) {
-        thresholds.feasibility = Number(rule.amountMin);
-      }
-      if (rule.ruleCode === 'PUBLIC_BID_40W_100W' && rule.amountMin) {
-        thresholds.publicSelect = Number(rule.amountMin);
-      }
-      if (rule.ruleCode === 'GOV_PURCHASE_THRESHOLD' && rule.amountMin) {
-        thresholds.govPurchase = Number(rule.amountMin);
-      }
-    });
+      return Number(rule.amountMin);
+    };
+
+    thresholds.deptPurchase = getRuleAmount('DEPT_PURCHASE_THRESHOLD');
+    thresholds.feasibility = getRuleAmount('FEASIBILITY_REPORT');
+    thresholds.publicSelect = getRuleAmount('PUBLIC_BID_40W_100W');
+    thresholds.govPurchase = getRuleAmount('GOV_PURCHASE_THRESHOLD');
+    thresholds.deptSelfMeetingMinutes = getRuleAmount('DEPT_SELF_MEETING_MINUTES', 2000);
 
     return thresholds;
   };