Merge branch 'working' into job_peek_lchen

job_peek_lchen: Add fetchfile feature (job output/error peek proxy)
working: HA/Raft infrastructure (consensus, replication, config mgmt)

Conflict resolution summary:
- controller.capnp: fetchfile @41, fetchfilereply @18, fetchfilemsg @30
- cluster.c: bifurcated OPCode_reply for fetchfile + config-push ACK
- job.c: kept full fetchfile pending-request subsystem (~183 lines)
- request.c: kept both xce_fetchfile_req() and XCE_RETRY_DEFAULTS
- helper.c: added missing preVoteRequest/preVoteReply mappings
- All 15 new test registrations (test_cbuf.c + 14 HA tests)

src/lib/helper.c

@@ -1,4 +1,5 @@
 #include <errno.h>
+#include <stdio.h>
 #include <stdlib.h>
 
 #include "controller.capnp.h"
@@ -147,6 +148,44 @@ char* xce_request_op_name(xce_request_t* req)
         return "setpreason";
     case OPCode_clrpreason:
         return "clrpreason";
+    case OPCode_heartbeat:
+        return "heartbeat";
+    case OPCode_redirect:
+        return "redirect";
+    case OPCode_steppingDown:
+        return "steppingDown";
+    case OPCode_replEntry:
+        return "replEntry";
+    case OPCode_replAck:
+        return "replAck";
+    case OPCode_replSnapshot:
+        return "replSnapshot";
+    case OPCode_replCatchUpDone:
+        return "replCatchUpDone";
+    case OPCode_replConfig:
+        return "replConfig";
+    case OPCode_replConfigPush:
+        return "replConfigPush";
+    case OPCode_upgradeConfig:
+        return "upgradeConfig";
+    case OPCode_upgradeConfigAck:
+        return "upgradeConfigAck";
+    case OPCode_requestVote:
+        return "requestVote";
+    case OPCode_probeConfigTag:
+        return "probeConfigTag";
+    case OPCode_walAck:
+        return "walAck";
+    case OPCode_walCatchupEntry:
+        return "walCatchupEntry";
+    case OPCode_snapshotTransfer:
+        return "snapshotTransfer";
+    case OPCode_preVoteRequest:
+        return "preVoteRequest";
+    case OPCode_preVoteReply:
+        return "preVoteReply";
+    case OPCode_ctrlstatus:
+        return "ctrlstatus";
     case OPCode_fetchfile:
         return "fetchfile";
     default:
@@ -332,3 +371,55 @@ char* xce_dataset_table(int table)
 
     return "unknown";
 }
+
+char* xce_notify_event_name(int event)
+{
+    static char buf[32];
+
+    switch (event) {
+    case NotifyData_data_jobPidInfo:
+        return "jobPidInfo";
+    case NotifyData_data_jobFailInfo:
+        return "jobFailInfo";
+    case NotifyData_data_jobDispatchFail:
+        return "jobDispatchFail";
+    case NotifyData_data_jobFinishInfo:
+        return "jobFinishInfo";
+    case NotifyData_data_schedStartJob:
+        return "schedStartJob";
+    case NotifyData_data_schedExitJob:
+        return "schedExitJob";
+    case NotifyData_data_schedFailJob:
+        return "schedFailJob";
+    case NotifyData_data_schedUpdateJob:
+        return "schedUpdateJob";
+    case NotifyData_data_schedUpdateResvals:
+        return "schedUpdateResvals";
+    case NotifyData_data_stoppedJob:
+        return "stoppedJob";
+    case NotifyData_data_resumedJob:
+        return "resumedJob";
+    case NotifyData_data_ckptinfo:
+        return "ckptinfo";
+    case NotifyData_data_schedUpdateQueue:
+        return "schedUpdateQueue";
+    case NotifyData_data_taskPidInfo:
+        return "taskPidInfo";
+    case NotifyData_data_taskFailInfo:
+        return "taskFailInfo";
+    case NotifyData_data_taskFinish:
+        return "taskFinish";
+    case NotifyData_data_postDoneJob:
+        return "postDoneJob";
+    case NotifyData_data_schedJobRusages:
+        return "schedJobRusages";
+    case NotifyData_data_updateJob:
+        return "updateJob";
+    default:
+        break;
+    }
+
+    snprintf(buf, sizeof(buf), "UNKNOWN(%d)", event);
+    return buf;
+}
+