refactor: remove stream smoothing config from system settings and improve base image caching

- Remove stream_smoothing configuration from SystemConfigService (moved to handler default)
- Remove stream smoothing UI controls from admin settings page
- Add AdminClearSingleAffinityAdapter for targeted cache invalidation
- Add clearSingleAffinity API endpoint to clear specific affinity cache entries
- Include global_model_id in affinity list response for UI deletion support
- Improve CI/CD workflow with hash-based base image change detection
- Add hash label to base image for reliable cache invalidation detection
- Use remote image inspection to determine if base image rebuild is needed
- Include Dockerfile.base in hash calculation for proper dependency tracking

frontend/src/views/admin/SystemSettings.vue

@@ -465,77 +465,6 @@
         </div>
       </CardSection>
 
-      <!-- 流式输出配置 -->
-      <CardSection
-        title="流式输出"
-        description="配置流式响应的输出效果"
-      >
-        <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
-          <div class="md:col-span-2">
-            <div class="flex items-center space-x-2">
-              <Checkbox
-                id="stream-smoothing-enabled"
-                v-model:checked="systemConfig.stream_smoothing_enabled"
-              />
-              <div>
-                <Label
-                  for="stream-smoothing-enabled"
-                  class="cursor-pointer"
-                >
-                  启用平滑输出
-                </Label>
-                <p class="text-xs text-muted-foreground">
-                  将上游返回的大块内容拆分成小块，模拟打字效果
-                </p>
-              </div>
-            </div>
-          </div>
-
-          <div>
-            <Label
-              for="stream-smoothing-chunk-size"
-              class="block text-sm font-medium"
-            >
-              每块字符数
-            </Label>
-            <Input
-              id="stream-smoothing-chunk-size"
-              v-model.number="systemConfig.stream_smoothing_chunk_size"
-              type="number"
-              min="1"
-              max="100"
-              placeholder="20"
-              class="mt-1"
-              :disabled="!systemConfig.stream_smoothing_enabled"
-            />
-            <p class="mt-1 text-xs text-muted-foreground">
-              每次输出的字符数量（1-100）
-            </p>
-          </div>
-
-          <div>
-            <Label
-              for="stream-smoothing-delay-ms"
-              class="block text-sm font-medium"
-            >
-              输出间隔 (毫秒)
-            </Label>
-            <Input
-              id="stream-smoothing-delay-ms"
-              v-model.number="systemConfig.stream_smoothing_delay_ms"
-              type="number"
-              min="1"
-              max="100"
-              placeholder="8"
-              class="mt-1"
-              :disabled="!systemConfig.stream_smoothing_enabled"
-            />
-            <p class="mt-1 text-xs text-muted-foreground">
-              每块之间的延迟毫秒数（1-100）
-            </p>
-          </div>
-        </div>
-      </CardSection>
     </div>
 
     <!-- 导入配置对话框 -->
@@ -884,10 +813,6 @@ interface SystemConfig {
   log_retention_days: number
   cleanup_batch_size: number
   audit_log_retention_days: number
-  // 流式输出
-  stream_smoothing_enabled: boolean
-  stream_smoothing_chunk_size: number
-  stream_smoothing_delay_ms: number
 }
 
 const loading = ref(false)
@@ -937,10 +862,6 @@ const systemConfig = ref<SystemConfig>({
   log_retention_days: 365,
   cleanup_batch_size: 1000,
   audit_log_retention_days: 30,
-  // 流式输出
-  stream_smoothing_enabled: false,
-  stream_smoothing_chunk_size: 20,
-  stream_smoothing_delay_ms: 8,
 })
 
 // 计算属性：KB 和 字节 之间的转换
@@ -997,10 +918,6 @@ async function loadSystemConfig() {
       'log_retention_days',
       'cleanup_batch_size',
       'audit_log_retention_days',
-      // 流式输出
-      'stream_smoothing_enabled',
-      'stream_smoothing_chunk_size',
-      'stream_smoothing_delay_ms',
     ]
 
     for (const key of configs) {
@@ -1108,22 +1025,6 @@ async function saveSystemConfig() {
         value: systemConfig.value.audit_log_retention_days,
         description: '审计日志保留天数'
       },
-      // 流式输出
-      {
-        key: 'stream_smoothing_enabled',
-        value: systemConfig.value.stream_smoothing_enabled,
-        description: '是否启用流式平滑输出'
-      },
-      {
-        key: 'stream_smoothing_chunk_size',
-        value: systemConfig.value.stream_smoothing_chunk_size,
-        description: '流式平滑输出每个小块的字符数'
-      },
-      {
-        key: 'stream_smoothing_delay_ms',
-        value: systemConfig.value.stream_smoothing_delay_ms,
-        description: '流式平滑输出每个小块之间的延迟毫秒数'
-      },
     ]
 
     const promises = configItems.map(item =>