Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@examples/disaggregated/slurm/benchmark/run_benchmark_nv_sa.sh`:
- Around line 194-201: The failure-suppression at the end of the Python here-doc
(the "2>/dev/null || true" attached to the command `python -
"${output_dir}/result.json" <<-'PYEOF' ... PYEOF`) hides missing or malformed
result.json files; remove the `2>/dev/null || true` and either allow the Python
process to surface errors (so the script fails visibly) or modify the Python
block to catch exceptions, print a clear error message including the bad
filename, and exit with a non‑zero status; keep the existing JSON logic but
ensure the here-doc (`PYEOF`) returns a non-zero exit on parse/open failures so
missing/malformed result.json is not treated as a successful run.

In `@tests/integration/defs/perf/disagg/reporting/report.py`:
- Around line 199-207: The concurrency suffix used when building base_test_name
no longer matches the pattern expected by _get_network_name, so update the
suffix to match the parser: change the construction of base_test_name (the line
that currently uses f"{test_name}_con:{concurrency}") to use the same "-con-<n>"
format that _get_network_name expects (e.g., f"{test_name}-con-{concurrency}"),
ensuring network_name is parsed correctly by _get_network_name.
- Around line 102-114: The code currently only catches json.JSONDecodeError when
reading result_json_path so filesystem races or permission errors during open()
will raise and abort parsing; wrap the open()+json.load() in a try that first
catches OSError (or more specific FileNotFoundError, PermissionError) to log and
continue, and then separately catch json.JSONDecodeError to log and continue,
ensuring you only broaden the except to those specific exceptions and still
update/skip total_requests and failed_requests correctly when data is available;
use the existing symbols result_json_path, logger, data, total_requests, and
failed_requests to locate and implement the changes.
- Around line 137-146: The NV-SA branch is being chosen only when self.config is
a dict and then relies solely on raw_results' "concurrency" entries, causing
valid NV-SA runs (e.g., when self.config is a BenchmarkConfig instance or when
metric extraction returned no matches) to fall back to 0/0; update the gating
and extraction: determine use_nv_sa by checking the NV-SA flag in either a dict
(self.config.get("benchmark", {}).get("use_nv_sa_benchmark")) or a
BenchmarkConfig instance via getattr(self.config, "benchmark", None) and look
for a truthy use_nv_sa_benchmark there, then call
_extract_request_counts_from_json(concurrencies) but if that returns
empty/invalid counts, implement a fallback that scans raw_results for
concurrency_*/result.json files (or their JSON payloads) and parse them to
compute failed_requests and total_requests before falling back to
_extract_request_counts_from_log(log_content); reference variables/functions:
use_nv_sa, self.config, raw_results, _extract_request_counts_from_json, and
_extract_request_counts_from_log.