docs(readme): 更新文档说明

- 添加项目使用指南
- 完善API接口描述
- 修正错误的配置示例

src/utils/dynamicUnit.js

@@ -2,11 +2,10 @@
  * Dynamic Unit System
  * 
  * Handles dynamic unit conversion and display for product parameters.
- * Base units: memory=KB, storage=GB, bandwidth=Mbps, cpu=Core
+ * Base units: storage=GB, bandwidth=Mbps, cpu=Core
  */
 
 const UNIT_CONVERSIONS = {
-  memory: { KB: 1, MB: 1024, GB: 1024 * 1024, TB: 1024 * 1024 * 1024 },
   cpu: { Core: 1 },
   bandwidth_up: { Mbps: 1, Gbps: 1000 },
   bandwidth_down: { Mbps: 1, Gbps: 1000 },
@@ -17,7 +16,6 @@ const UNIT_CONVERSIONS = {
 }
 
 const BASE_UNITS = {
-  memory: 'KB',
   cpu: 'Core',
   bandwidth_up: 'Mbps',
   bandwidth_down: 'Mbps',
@@ -28,7 +26,6 @@ const BASE_UNITS = {
 }
 
 const DEFAULT_DISPLAY_UNITS = {
-  memory: 'MB',
   cpu: 'Core',
   bandwidth_up: 'Mbps',
   bandwidth_down: 'Mbps',
@@ -39,7 +36,6 @@ const DEFAULT_DISPLAY_UNITS = {
 }
 
 const ARG_KEY_OPTIONS = [
-  { label: '内存 (memory)', value: 'memory' },
   { label: 'CPU (cpu)', value: 'cpu' },
   { label: 'IPv4', value: 'ipv4' },
   { label: 'IPv6', value: 'ipv6' },
@@ -54,7 +50,7 @@ const ARG_KEY_OPTIONS = [
  * @param {number} value
  * @param {string} fromUnit
  * @param {string} toUnit
- * @param {string} argKey - e.g. 'memory', 'storage'
+ * @param {string} argKey - e.g. 'storage', 'bandwidth_up'
  */
 export function convertUnit(value, fromUnit, toUnit, argKey) {
   if (value === null || value === undefined || fromUnit === toUnit) return value