fix(bugcollect): captureError 在 SDK 未就绪时暂存事件，就绪后自动 flush

- 添加 pendingErrors 队列，SDK 未初始化时 captureError 不再丢弃事件
- startCrashCapture 完成后自动 flush 暂存事件到上传队列

sdk-bugcollect/src/main/java/com/xuqm/sdk/bugcollect/BugCollect.kt

@@ -16,6 +16,9 @@ object BugCollect {
 
     private val breadcrumbBuffer: LinkedList<Breadcrumb> = LinkedList()
     private val breadcrumbLock = Any()
+    // SDK 未就绪时暂存的错误事件，就绪后自动 flush
+    private val pendingErrors = LinkedList<IssueEvent>()
+    private val pendingErrorsLock = Any()
     private const val MAX_BREADCRUMBS = 50
     private const val SDK_NAME = "bugcollect.android"
     private const val SDK_VERSION = "1.1.0"
@@ -53,14 +56,13 @@ object BugCollect {
     }
 
     fun captureError(error: Throwable, tags: Map<String, Any?> = emptyMap(), fingerprint: String? = null) {
-        if (!isReady()) return
         val crumbs = synchronized(breadcrumbLock) { breadcrumbBuffer.toList() }
         val fp = fingerprint ?: Fingerprint.compute(
             error.javaClass.simpleName,
             error.message ?: error.javaClass.name,
             error.stackTraceToString(),
         )
-        queue().push(IssueEvent(
+        val event = IssueEvent(
             level = "error",
             platform = "android",
             fingerprint = fp,
@@ -77,7 +79,13 @@ object BugCollect {
             user = IssueEvent.UserInfo(id = XuqmSDK.getUserId() ?: XuqmSDK.deviceId),
             device = buildDeviceInfo(),
             tags = tags,
-        ))
+        )
+        if (!isReady()) {
+            synchronized(pendingErrorsLock) { pendingErrors.add(event) }
+            return
+        }
+        flushPendingErrors()
+        queue().push(event)
     }
 
     fun captureCrash(error: Throwable, tags: Map<String, Any?> = emptyMap()) {
@@ -143,9 +151,21 @@ object BugCollect {
             appKey = XuqmSDK.appKey,
             getUserId = { XuqmSDK.getUserId() ?: XuqmSDK.deviceId },
         )
+        flushPendingErrors()
         queue().uploadPendingCrashes()
     }
 
+    /** 将 SDK 未就绪时暂存的错误事件 flush 到队列。 */
+    private fun flushPendingErrors() {
+        val events = synchronized(pendingErrorsLock) {
+            if (pendingErrors.isEmpty()) return
+            val list = pendingErrors.toList()
+            pendingErrors.clear()
+            list
+        }
+        events.forEach { queue().push(it) }
+    }
+
     /** 上传上次崩溃落盘的文件（远端配置就绪后由 BugCollectInitProvider 自动调用）。 */
     fun uploadPendingCrashes() {
         if (isReady()) queue().uploadPendingCrashes()