Merge #157769

157769: build/github: enable more logging for EngFlow invocations in CI r=rail a=rickystewart

See [the EngFlow blog post](https://blog.engflow.com/2025/11/10/enhanced-invocation-level-insights-for-bazel-builds/).

Release note: none
Epic: none

Co-authored-by: Ricky Stewart <[email protected]>

Author: craig[bot]

build/github/engflow-args.sh

@@ -8,7 +8,9 @@
 # remote execution arguments to the invocation. You must call get-engflow-keys.sh
 # before this.
 
-ARGS='--config engflowpublic --tls_client_certificate=/home/agent/engflow.crt --tls_client_key=/home/agent/engflow.key --experimental_build_event_upload_retry_minimum_delay 3s --experimental_build_event_upload_max_retries 8'
+tmpfile=$(mktemp)
+
+ARGS="--config engflowpublic --tls_client_certificate=/home/agent/engflow.crt --tls_client_key=/home/agent/engflow.key --experimental_build_event_upload_retry_minimum_delay 3s --experimental_build_event_upload_max_retries 8 --execution_log_compact_file=$tmpfile --experimental_build_event_upload_strategy=remote"
 
 if [[ "$GITHUB_ACTIONS_BRANCH" == staging-* ]]
 then