Address second review: autoformat scripts/, new findings, polish

B1: Add scripts/ to autoformat.sh scope; run pyink+isort on both
    scripts (now consistent 2-space indent throughout)

N1: Guard --sdk-tree + --output-json - (SDK trace.render() writes
    directly to stdout, bypassing the stderr routing)

N4: Add test_cache_isolates_paths — proves two different config paths
    return two different configs (regression guard for B2 fix)

N5: Include session ID in A2A JSON parse warning for debuggability

M2: Add docstring to get_eval_metrics documenting returned metrics
    and the always-present declined category

M8: Qualify run_eval.py path in --session-ids-file help text

N3: Add --env example to README direct-Python usage section

L4: Complete latency_report.py module docstring with all flags
    (--no-waterfall, --sdk-tree, --report, --output-json, --env)

79 tests pass, autoformat clean (pyink + isort).

Author: evekhm

autoformat.sh

@@ -21,9 +21,9 @@ set -euo pipefail
 REPO_ROOT="$(cd "$(dirname "$0")" && pwd)"
 
 echo "==> Running isort (import sorting)..."
-isort "${REPO_ROOT}/src/" "${REPO_ROOT}/tests/" "${REPO_ROOT}/examples/"
+isort "${REPO_ROOT}/src/" "${REPO_ROOT}/tests/" "${REPO_ROOT}/examples/" "${REPO_ROOT}/scripts/"
 
 echo "==> Running pyink (code formatting)..."
-pyink --config "${REPO_ROOT}/pyproject.toml" "${REPO_ROOT}/src/" "${REPO_ROOT}/tests/" "${REPO_ROOT}/examples/"
+pyink --config "${REPO_ROOT}/pyproject.toml" "${REPO_ROOT}/src/" "${REPO_ROOT}/tests/" "${REPO_ROOT}/examples/" "${REPO_ROOT}/scripts/"
 
 echo "==> Done. All Python files formatted."

scripts/README.md

@@ -193,6 +193,7 @@ Or run the Python script directly:
 
 ```bash
 python scripts/latency_report.py --limit 5 --time-period 1h
+python scripts/latency_report.py --env path/to/.env --limit 5
 ```
 
 ### Output