feat: 新增补丁管理和异常检测插件及相关功能

feat(protocol): 添加补丁管理和行为指标协议类型
feat(client): 实现补丁管理插件采集功能
feat(server): 添加补丁管理和异常检测API
feat(database): 新增补丁状态和异常检测相关表
feat(web): 添加补丁管理和异常检测前端页面
fix(security): 增强输入验证和防注入保护
refactor(auth): 重构认证检查逻辑
perf(service): 优化Windows服务恢复策略
style: 统一健康评分显示样式
docs: 更新知识库文档

migrations/017_device_health_scores.sql

@@ -0,0 +1,20 @@
+-- 017_device_health_scores.sql: Device health scoring system
+
+CREATE TABLE IF NOT EXISTS device_health_scores (
+    id                  INTEGER PRIMARY KEY AUTOINCREMENT,
+    device_uid          TEXT NOT NULL REFERENCES devices(device_uid) ON DELETE CASCADE,
+    score               INTEGER NOT NULL DEFAULT 0 CHECK(score >= 0 AND score <= 100),
+    status_score        INTEGER NOT NULL DEFAULT 0,
+    encryption_score    INTEGER NOT NULL DEFAULT 0,
+    load_score          INTEGER NOT NULL DEFAULT 0,
+    alert_score         INTEGER NOT NULL DEFAULT 0,
+    compliance_score    INTEGER NOT NULL DEFAULT 0,
+    patch_score         INTEGER NOT NULL DEFAULT 0,
+    level               TEXT NOT NULL DEFAULT 'unknown' CHECK(level IN ('healthy', 'warning', 'critical', 'unknown')),
+    details             TEXT,
+    computed_at         TEXT NOT NULL DEFAULT (datetime('now')),
+    UNIQUE(device_uid)
+);
+
+CREATE INDEX IF NOT EXISTS idx_health_scores_level ON device_health_scores(level);
+CREATE INDEX IF NOT EXISTS idx_health_scores_computed ON device_health_scores(computed_at);