fix(telemetry): apply single rootless log path to workload stack

Extend the log-mount consolidation to the phase-10 workload-validation
assets, which still used the old `rippled` container path:
- docker-compose.workload.yaml: mount target renamed to /var/log/xrpld,
  source made overridable via XRPLD_LOG_DIR (default /tmp/xrpld-validation)
- otel-collector-config.grafanacloud.yaml: single glob /var/log/xrpld/*/debug.log
- run-full-validation.sh sets XRPLD_LOG_DIR to its workdir

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docker/telemetry/docker-compose.workload.yaml

@@ -39,8 +39,10 @@ services:
       - "13133:13133" # Health check
     volumes:
       - ./otel-collector-config.yaml:/etc/otel-collector-config.yaml:ro
-      # Mount the validation workdir so filelog receiver can tail node logs.
-      - /tmp/xrpld-validation:/var/log/rippled:ro
+      # Mount the validation workdir so the filelog receiver can tail node
+      # logs. run-full-validation.sh sets XRPLD_LOG_DIR to its workdir; the
+      # default matches that workdir so a bare `docker compose up` also works.
+      - ${XRPLD_LOG_DIR:-/tmp/xrpld-validation}:/var/log/xrpld:ro
     depends_on:
       - tempo
     networks:

docker/telemetry/otel-collector-config.grafanacloud.yaml

@@ -40,8 +40,7 @@ receivers:
         endpoint: 0.0.0.0:4318
   filelog:
     include:
-      - /var/log/rippled/*/debug.log
-      - /var/log/rippled-integration/*/debug.log
+      - /var/log/xrpld/*/debug.log
     operators:
       - type: regex_parser
         regex: '^(?P<timestamp>\S+\s+\S+)\s+\S+\s+(?:(?P<partition>\S+):)?(?P<severity>\S+)\s+(?:trace_id=(?P<trace_id>[a-f0-9]+)\s+span_id=(?P<span_id>[a-f0-9]+)\s+)?(?P<message>.*)$'

docker/telemetry/workload/run-full-validation.sh

@@ -179,7 +179,9 @@ mkdir -p "$WORKDIR" "$REPORT_DIR"
 # Step 1: Start observability stack
 # ---------------------------------------------------------------------------
 log "Step 1: Starting observability stack..."
-docker compose -f "$COMPOSE_FILE" up -d
+# Point the collector's log mount at this run's workdir so the filelog
+# receiver tails the per-node debug.log files generated below.
+XRPLD_LOG_DIR="$WORKDIR" docker compose -f "$COMPOSE_FILE" up -d
 
 log "Waiting for OTel Collector..."
 for attempt in $(seq 1 30); do