Get Alarm Runtime Status: support query the running status for the whole cluster.

[wankai123]

• If this pull request closes/resolves/fixes an existing issue, replace the issue number. Closes #.
• Update the CHANGES log.

[Copilot]

Pull Request Overview

This PR enhances the alarm runtime status query functionality to support querying the running status for the whole OAP cluster instead of just a single instance.

Key changes:

• Refactored alarm status query endpoints to aggregate results from all OAP cluster instances
• Introduced new service interfaces and data structures for cluster-wide alarm status representation
• Updated documentation to reflect the new cluster-aware API response format

Reviewed Changes

Copilot reviewed 24 out of 24 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
alarm-settings.yml (multiple locations)	Updated documentation comments to use "Rule unique id" instead of "Rule unique name" for consistency
StatusQueryProvider.java	Registered AlarmStatusQueryService as a module service implementation
StatusQueryModule.java	Added AlarmStatusQueryService to the list of provided services
AlarmStatusQueryService.java	New service that queries alarm status from all OAP instances in the cluster via gRPC
AlarmStatusQueryHandler.java	Refactored to delegate to AlarmStatusQueryService instead of directly accessing alarm rules
RemoteService.proto	Added syncStatus RPC method and related message types for cross-instance status queries
SelfRemoteClient.java	Implemented getChannel() method returning null for self-client
RemoteClient.java	Added getChannel() method to interface for accessing underlying gRPC channel
GRPCRemoteClient.java	Made getChannel() method public to implement interface
RemoteServiceHandler.java	Added syncStatus RPC handler to respond to status queries from other OAP instances
AlarmStatusWatcherService.java	New service interface defining methods for retrieving alarm status information
AlarmModule.java	Added AlarmStatusWatcherService to module's provided services
InstanceAlarmStatus.java	New data class representing alarm status for a single OAP instance
ClusterAlarmStatus.java	New data class representing alarm status for the entire cluster
AlarmRunningContext.java	New data class representing the runtime context of an alarm rule
AlarmRuleList.java	New data class representing a list of alarm rules
AlarmRuleDetail.java	New data class representing detailed information about an alarm rule
AlarmStatusWatcher.java	Implementation of AlarmStatusWatcherService that retrieves alarm status from the local instance
AlarmModuleProvider.java	Registered AlarmStatusWatcher as the implementation of AlarmStatusWatcherService
query_alarm_runtime_status.md	Updated documentation showing new cluster-aware response format with examples
backend-alarm.md	Updated terminology from "Rule name" to "Rule id" and "hook names" to "hook ids"
changes.md	Added changelog entry for the new cluster-wide alarm status query feature

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