feat(experiments): E1 sweep on 50-session deterministic subset

scripts/sample_trace_subset.py — file-order head-cut that takes the
first N sessions of a converted trace. No RNG, no hashing — same
input yields byte-identical output (the included assertion compares
md5 across two runs).

scripts/sweep_e1_naive_1p3d.sh — E1 of ONBOARDING_NEXT_AGENT_ZH §3.1:
mechanism=pd-disaggregation, policy=kv-aware, 1P3D, RDMA on
(mlx5_60). Defaults to outputs/inferact_50sess.jsonl so E1 and E2
can share the exact same subset; override via TRACE= env var to run
on the full 20,230-request trace.

Reproducing the subset:
  uv run --no-sync python scripts/sample_trace_subset.py \\
    --input outputs/inferact_codex_swebenchpro.jsonl \\
    --output outputs/inferact_50sess.jsonl \\
    --sessions 50
  # expected output_md5: 7bb263a32600ef5a6ef5099ba340a487
  # 1285 requests, mean input_length 67631 tokens

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/sweep_e1_naive_1p3d.sh

@@ -0,0 +1,82 @@
+#!/usr/bin/env bash
+# E1 — naive 1P3D + kv-aware + RDMA, ts=1
+#
+# Tests hypothesis H1 from ONBOARDING_NEXT_AGENT_ZH §3.1: separate the
+# contribution of "1P3D topology + kv-aware policy" from "KVC layer
+# (admission / migration / direct-to-D)".
+#
+# Mechanism = pd-disaggregation (no KVC layer); policy = kv-aware.
+# Topology = 1P3D, RDMA on (mlx5_60 = cuda:0 NUMA-local).
+#
+# Prerequisites:
+#   - source scripts/setup_env.sh (sets CUDA_HOME etc.)
+#   - outputs/inferact_codex_swebenchpro.jsonl exists
+#     (run scripts/convert_inferact_to_trace.py if not)
+#
+# Usage:
+#   bash scripts/sweep_e1_naive_1p3d.sh
+#
+# Override defaults via env:
+#   MODEL=/path TRACE=path OUTPUT=path IB_DEVICE=mlx5_XX bash scripts/sweep_e1_naive_1p3d.sh
+
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+if [ -z "${CUDA_HOME:-}" ]; then
+  echo "ERROR: CUDA_HOME not set. Source scripts/setup_env.sh first." >&2
+  exit 1
+fi
+
+MODEL=${MODEL:-/mnt/models/Qwen/Qwen3-30B-A3B-Instruct-2507}
+TRACE=${TRACE:-outputs/inferact_50sess.jsonl}
+OUTPUT=${OUTPUT:-outputs/e1_naive_1p3d_kvaware_rdma_50sess}
+IB_DEVICE=${IB_DEVICE:-mlx5_60}
+
+if [ ! -f "$TRACE" ]; then
+  echo "ERROR: trace not found at $TRACE" >&2
+  echo "Run: uv run --no-sync python scripts/convert_inferact_to_trace.py --output $TRACE" >&2
+  exit 1
+fi
+
+mkdir -p "$OUTPUT"
+LOG="$OUTPUT/sweep.log"
+
+log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*" | tee -a "$LOG"; }
+
+log "=== E1: naive 1P3D kv-aware + RDMA, ts=1 ==="
+log "MODEL=$MODEL"
+log "TRACE=$TRACE ($(wc -l < $TRACE) requests)"
+log "OUTPUT=$OUTPUT"
+log "IB_DEVICE=$IB_DEVICE"
+
+label=e1_naive_1p3d_kvaware_run1
+log ""
+log "=== [E1] $label starting ==="
+
+uv run --no-sync python -m agentic_pd_hybrid.cli benchmark-live \
+  --trace "$TRACE" \
+  --output-root "$OUTPUT" \
+  --mechanism pd-disaggregation \
+  --policy kv-aware \
+  --model-path "$MODEL" \
+  --prefill-workers 1 --decode-workers 3 \
+  --prefill-tp-size 1 --decode-tp-size 1 \
+  --prefill-gpu-ids 0 --decode-gpu-ids 1,2,3 \
+  --transfer-backend mooncake \
+  --force-rdma --ib-device "$IB_DEVICE" \
+  --gpu-budget 4 \
+  --time-scale 1 \
+  --session-sample-rate 1.0 \
+  --target-duration-s 100000 \
+  --concurrency-limit 32 \
+  --timeout-s 1800 \
+  --request-timeout-s 300 2>&1 | tee -a "$LOG"
+
+run_dir=$(ls -td "$OUTPUT"/pd-disaggregation-*/ 2>/dev/null | head -1)
+log "=== [E1] $label COMPLETED, artifacts at $run_dir ==="
+
+if [ -f "$run_dir/request-metrics.jsonl.summary.json" ]; then
+  cp "$run_dir/request-metrics.jsonl.summary.json" "$OUTPUT/${label}_summary.json"
+  cp "$run_dir/request-metrics.jsonl" "$OUTPUT/${label}_metrics.jsonl"
+  log "=== summary saved to $OUTPUT/${label}_summary.json ==="
+fi