fix(billing): 封住发布前计费竞态

阻止上游提交状态不明的任务被租约接管后重复执行，并为人工复核保留可操作的结算记录。

将生产提交绑定到当前估价签名，统一复用预处理快照，并补强规则形状、定点溢出与历史规则兼容校验。

已通过 PostgreSQL 16 集成测试、Go 全量测试与静态检查、前端测试与构建、OpenAPI、依赖审计、镜像、迁移、流水线和 SemVer 门禁。

apps/api/internal/httpapi/handlers.go

@@ -931,6 +931,10 @@ func (s *Server) estimatePricing(w http.ResponseWriter, r *http.Request) {
 			writeErrorWithDetails(w, statusFromRunError(err), runErrorMessage(err), runErrorDetails(err), store.ModelCandidateErrorCode(err))
 			return
 		}
+		if code := clients.ErrorCode(err); code == "bad_request" || code == "invalid_parameter" {
+			writeErrorWithDetails(w, http.StatusBadRequest, runErrorMessage(err), runErrorDetails(err), code)
+			return
+		}
 		s.logger.Error("estimate pricing failed", "error", err)
 		writeError(w, http.StatusInternalServerError, "estimate pricing failed")
 		return

apps/api/internal/httpapi/pricing_handlers.go

@@ -165,6 +165,13 @@ func validPricingRuleSetInput(input store.PricingRuleSetInput) bool {
 		default:
 			return false
 		}
+		calculator := strings.TrimSpace(rule.CalculatorType)
+		if calculator == "" {
+			calculator = store.DefaultEffectivePricingCalculator(rule.ResourceType)
+		}
+		if store.ValidateEffectivePricingRuleShape(strings.TrimSpace(rule.ResourceType), store.NormalizeEffectivePricingRuleUnit(rule.ResourceType, rule.Unit), calculator) != nil {
+			return false
+		}
 		effectiveFrom, fromOK := pricingEffectiveTime(rule.EffectiveFrom)
 		effectiveTo, toOK := pricingEffectiveTime(rule.EffectiveTo)
 		if !fromOK || !toOK || (!effectiveFrom.IsZero() && !effectiveTo.IsZero() && !effectiveFrom.Before(effectiveTo)) {