refactor: 移除 success 字段，简化为 matched 单层判定模型

tests/server/checker/store.test.ts

@@ -132,7 +132,6 @@ describe("ProbeStore", () => {
     store.insertCheckResult({
       targetId: t1Id,
       timestamp: "2025-01-01T00:00:00.000Z",
-      success: true,
       matched: true,
       durationMs: 150.5,
       statusDetail: "200 OK",
@@ -142,7 +141,6 @@ describe("ProbeStore", () => {
     store.insertCheckResult({
       targetId: t1Id,
       timestamp: "2025-01-01T00:00:30.000Z",
-      success: true,
       matched: true,
       durationMs: 300,
       statusDetail: "200 OK",
@@ -161,7 +159,6 @@ describe("ProbeStore", () => {
     store.insertCheckResult({
       targetId: t1Id,
       timestamp: "2025-01-01T00:01:00.000Z",
-      success: false,
       matched: false,
       durationMs: null,
       statusDetail: null,
@@ -173,7 +170,7 @@ describe("ProbeStore", () => {
     expect(history.items[0]!.timestamp).toBe("2025-01-01T00:01:00.000Z");
 
     const latest = store.getLatestCheck(t1Id)!;
-    expect(latest.success).toBe(0);
+    expect(latest.matched).toBe(0);
     expect(latest.failure).not.toBeNull();
     const parsedFailure = JSON.parse(latest.failure!) as CheckFailure;
     expect(parsedFailure.kind).toBe("error");
@@ -189,7 +186,6 @@ describe("ProbeStore", () => {
       store.insertCheckResult({
         targetId: t1Id,
         timestamp: `2025-01-01T01:${String(i).padStart(2, "0")}:00.000Z`,
-        success: true,
         matched: true,
         durationMs: 100 + i,
         statusDetail: "200 OK",
@@ -250,7 +246,6 @@ describe("ProbeStore", () => {
     expect(samples.length).toBeGreaterThan(0);
     for (const sample of samples) {
       expect(typeof sample.timestamp).toBe("string");
-      expect(typeof sample.success).toBe("number");
       expect(typeof sample.matched).toBe("number");
     }
   });