main:删除 Grafana 仪表板配置文件

更新内容：
- 移除 `dashboard.json` 文件，清理不再需要的 Grafana 仪表板配置。
- 简化项目目录结构，删除多余的监控配置以优化维护。

scripts/test_concurrency.sh

@@ -0,0 +1,104 @@
+#!/bin/bash
+# 并发控制测试脚本
+
+set -e
+
+BASE_URL="http://localhost:8000"
+
+echo "=== 异步任务并发控制测试 ==="
+echo ""
+
+# 1. 检查服务是否运行
+echo "1. 检查服务状态..."
+if ! curl -s "${BASE_URL}/healthz" > /dev/null; then
+    echo "❌ 服务未运行，请先启动服务"
+    exit 1
+fi
+echo "✅ 服务正常运行"
+echo ""
+
+# 2. 查询初始并发状态
+echo "2. 查询初始并发状态..."
+curl -s "${BASE_URL}/jobs/concurrency/status" | jq '.'
+echo ""
+
+# 3. 创建多个任务
+echo "3. 创建 15 个任务（测试并发限制）..."
+JOB_IDS=()
+for i in {1..15}; do
+    # 使用较大的质数，让任务执行时间更长
+    NUMBER=$((10000 + i * 1000))
+    RESPONSE=$(curl -s -X POST "${BASE_URL}/jobs" \
+        -H "Content-Type: application/json" \
+        -d "{\"algorithm\": \"PrimeChecker\", \"params\": {\"number\": ${NUMBER}}}")
+
+    JOB_ID=$(echo "$RESPONSE" | jq -r '.job_id')
+    JOB_IDS+=("$JOB_ID")
+    echo "  创建任务 ${i}/15: job_id=${JOB_ID}"
+
+    # 短暂延迟，避免请求过快
+    sleep 0.1
+done
+echo ""
+
+# 4. 立即查询并发状态（应该看到多个任务在运行）
+echo "4. 查询并发状态（任务执行中）..."
+for i in {1..5}; do
+    echo "  第 ${i} 次查询:"
+    STATUS=$(curl -s "${BASE_URL}/jobs/concurrency/status")
+    echo "    $(echo "$STATUS" | jq -c '.')"
+    sleep 1
+done
+echo ""
+
+# 5. 等待所有任务完成
+echo "5. 等待任务完成..."
+COMPLETED=0
+TOTAL=${#JOB_IDS[@]}
+
+while [ $COMPLETED -lt $TOTAL ]; do
+    COMPLETED=0
+    for JOB_ID in "${JOB_IDS[@]}"; do
+        STATUS=$(curl -s "${BASE_URL}/jobs/${JOB_ID}" | jq -r '.status')
+        if [ "$STATUS" = "completed" ] || [ "$STATUS" = "failed" ]; then
+            ((COMPLETED++))
+        fi
+    done
+
+    echo "  进度: ${COMPLETED}/${TOTAL} 任务完成"
+
+    # 显示当前并发状态
+    CONCURRENCY=$(curl -s "${BASE_URL}/jobs/concurrency/status")
+    echo "  并发状态: $(echo "$CONCURRENCY" | jq -c '.')"
+
+    if [ $COMPLETED -lt $TOTAL ]; then
+        sleep 2
+    fi
+done
+echo ""
+
+# 6. 查询最终并发状态
+echo "6. 查询最终并发状态..."
+curl -s "${BASE_URL}/jobs/concurrency/status" | jq '.'
+echo ""
+
+# 7. 显示任务结果统计
+echo "7. 任务结果统计..."
+COMPLETED_COUNT=0
+FAILED_COUNT=0
+
+for JOB_ID in "${JOB_IDS[@]}"; do
+    STATUS=$(curl -s "${BASE_URL}/jobs/${JOB_ID}" | jq -r '.status')
+    if [ "$STATUS" = "completed" ]; then
+        ((COMPLETED_COUNT++))
+    elif [ "$STATUS" = "failed" ]; then
+        ((FAILED_COUNT++))
+    fi
+done
+
+echo "  总任务数: ${TOTAL}"
+echo "  成功: ${COMPLETED_COUNT}"
+echo "  失败: ${FAILED_COUNT}"
+echo ""
+
+echo "=== 测试完成 ==="