feat: target 软删除机制，配置移除时保留历史数据

src/server/checker/store.ts

@@ -17,7 +17,8 @@ CREATE TABLE IF NOT EXISTS targets (
   interval_ms INTEGER NOT NULL,
   timeout_ms INTEGER NOT NULL,
   expect TEXT,
-  grp TEXT NOT NULL DEFAULT 'default'
+  grp TEXT NOT NULL DEFAULT 'default',
+  active INTEGER NOT NULL DEFAULT 1
 )
 `;
 
@@ -30,7 +31,7 @@ CREATE TABLE IF NOT EXISTS check_results (
   duration_ms REAL,
   observation TEXT,
   failure TEXT,
-  FOREIGN KEY (target_id) REFERENCES targets(id) ON DELETE CASCADE
+  FOREIGN KEY (target_id) REFERENCES targets(id) ON DELETE RESTRICT
 )
 `;
 
@@ -58,6 +59,11 @@ export class ProbeStore {
     this.db.close();
   }
 
+  deleteTargetRaw(id: string): void {
+    if (this.closed) return;
+    this.db.run("DELETE FROM targets WHERE id = ?", [id]);
+  }
+
   getAllRecentSamples(
     limit: number,
   ): Map<string, Array<{ duration_ms: null | number; matched: number; timestamp: string }>> {
@@ -74,6 +80,7 @@ export class ProbeStore {
              matched,
              ROW_NUMBER() OVER (PARTITION BY target_id ORDER BY timestamp DESC) as row_num
            FROM check_results
+           WHERE target_id IN (SELECT id FROM targets WHERE active = 1)
          )
          WHERE row_num <= ?
          ORDER BY target_id, timestamp DESC`,
@@ -107,6 +114,7 @@ export class ProbeStore {
           COALESCE(SUM(CASE WHEN matched = 0 THEN 1 ELSE 0 END), 0) as downChecks
          FROM check_results
          WHERE timestamp >= ? AND timestamp <= ?
+           AND target_id IN (SELECT id FROM targets WHERE active = 1)
          GROUP BY target_id`,
       )
       .all(from, to) as Array<{ downChecks: number; target_id: string; totalChecks: number; upChecks: number }>;
@@ -138,6 +146,7 @@ export class ProbeStore {
         `SELECT target_id, timestamp, matched
          FROM check_results
          WHERE timestamp >= ? AND timestamp <= ?
+           AND target_id IN (SELECT id FROM targets WHERE active = 1)
          ORDER BY target_id ASC, timestamp ASC`,
       )
       .all(from, to) as Array<{ matched: number; target_id: string; timestamp: string }>;
@@ -177,6 +186,7 @@ export class ProbeStore {
          INNER JOIN (
            SELECT target_id, MAX(timestamp) as max_ts
            FROM check_results
+           WHERE target_id IN (SELECT id FROM targets WHERE active = 1)
            GROUP BY target_id
          ) latest ON cr.target_id = latest.target_id AND cr.timestamp = latest.max_ts`,
       )
@@ -199,9 +209,15 @@ export class ProbeStore {
     }>;
   }
 
+  getTargetActive(id: string): null | number {
+    if (this.closed) return null;
+    const row = this.db.query("SELECT active FROM targets WHERE id = ?").get(id) as null | { active: number };
+    return row?.active ?? null;
+  }
+
   getTargetById(id: string): null | StoredTarget {
     if (this.closed) return null;
-    return this.db.query("SELECT * FROM targets WHERE id = ?").get(id) as null | StoredTarget;
+    return this.db.query("SELECT * FROM targets WHERE id = ? AND active = 1").get(id) as null | StoredTarget;
   }
 
   getTargetCheckpoints(
@@ -239,7 +255,7 @@ export class ProbeStore {
   getTargets(): StoredTarget[] {
     if (this.closed) return [];
     return this.db
-      .query("SELECT * FROM targets ORDER BY CASE WHEN grp='default' THEN 0 ELSE 1 END, id")
+      .query("SELECT * FROM targets WHERE active = 1 ORDER BY CASE WHEN grp='default' THEN 0 ELSE 1 END, id")
       .all() as StoredTarget[];
   }
 
@@ -277,6 +293,12 @@ export class ProbeStore {
     };
   }
 
+  hasTargetRow(id: string): boolean {
+    if (this.closed) return false;
+    const row = this.db.query("SELECT 1 FROM targets WHERE id = ?").get(id) as null | { "1": number };
+    return row !== null;
+  }
+
   insertCheckResult(result: {
     durationMs: null | number;
     failure: CheckFailure | null;
@@ -304,6 +326,9 @@ export class ProbeStore {
     if (this.closed) return 0;
     const cutoff = new Date(Date.now() - retentionMs).toISOString();
     const result = this.db.run("DELETE FROM check_results WHERE timestamp < ?", [cutoff]);
+    this.db.run(
+      "DELETE FROM targets WHERE active = 0 AND NOT EXISTS (SELECT 1 FROM check_results WHERE check_results.target_id = targets.id)",
+    );
     return result.changes;
   }
 
@@ -317,9 +342,9 @@ export class ProbeStore {
       "INSERT INTO targets (id, name, description, type, target, config, interval_ms, timeout_ms, expect, grp) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
     );
     const updateStmt = this.db.prepare(
-      "UPDATE targets SET name = ?, description = ?, type = ?, target = ?, config = ?, interval_ms = ?, timeout_ms = ?, expect = ?, grp = ? WHERE id = ?",
+      "UPDATE targets SET name = ?, description = ?, type = ?, target = ?, config = ?, interval_ms = ?, timeout_ms = ?, expect = ?, grp = ?, active = 1 WHERE id = ?",
     );
-    const deleteStmt = this.db.prepare("DELETE FROM targets WHERE id = ?");
+    const deactivateStmt = this.db.prepare("UPDATE targets SET active = 0 WHERE id = ? AND active = 1");
 
     const tx = this.db.transaction(() => {
       for (const t of targets) {
@@ -338,7 +363,7 @@ export class ProbeStore {
 
       for (const id of existingIds) {
         if (!configIds.has(id)) {
-          deleteStmt.run(id);
+          deactivateStmt.run(id);
         }
       }
     });

src/server/checker/types.ts

@@ -66,6 +66,7 @@ export interface StoredCheckResult {
 }
 
 export interface StoredTarget {
+  active: number;
   config: string;
   description: null | string;
   expect: null | string;