Debug Counters Implementation - Clean History

Major Features:
- Debug counter infrastructure for Refill Stage tracking
- Free Pipeline counters (ss_local, ss_remote, tls_sll)
- Diagnostic counters for early return analysis
- Unified larson.sh benchmark runner with profiles
- Phase 6-3 regression analysis documentation

Bug Fixes:
- Fix SuperSlab disabled by default (HAKMEM_TINY_USE_SUPERSLAB)
- Fix profile variable naming consistency
- Add .gitignore patterns for large files

Performance:
- Phase 6-3: 4.79 M ops/s (has OOM risk)
- With SuperSlab: 3.13 M ops/s (+19% improvement)

This is a clean repository without large log files.

🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>

archive/experimental_scripts/sweep_tiny_params.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Sweep Tiny parameters via env for 16–64B and capture throughput.
+# This keeps code unchanged and only toggles env knobs:
+#  - HAKMEM_TINY_TLS_SLL: 0/1
+#  - HAKMEM_TINY_MAG_CAP: e.g. 128/256/512/1024
+#
+# Usage: scripts/sweep_tiny_params.sh [cycles]
+
+ROOT_DIR=$(cd "$(dirname "$0")/.." && pwd)
+cd "$ROOT_DIR"
+
+cycles=${1:-150000}
+
+make -s bench_fast >/dev/null
+
+TS=$(date +%Y%m%d_%H%M%S)
+OUTDIR="bench_results/sweep_tiny_${TS}"
+mkdir -p "$OUTDIR"
+CSV="$OUTDIR/results.csv"
+echo "size,sll,mag_cap,throughput_mops" > "$CSV"
+
+sizes=(16 32 64)
+slls=(1 0)
+mags=(128 256 512 1024 2048)
+
+run_case() {
+  local size="$1"; shift
+  local sll="$1"; shift
+  local cap="$1"; shift
+  local out
+  HAKMEM_TINY_TLS_SLL="$sll" HAKMEM_TINY_MAG_CAP="$cap" ./bench_tiny_hot_hakmem "$size" 100 "$cycles" \
+    | sed -n 's/^Throughput: \([0-9.][0-9.]*\) M ops.*/\1/p' >"$OUTDIR/tmp.txt" || true
+  out=$(cat "$OUTDIR/tmp.txt" || true)
+  if [[ -n "$out" ]]; then
+    echo "$size,$sll,$cap,$out" >> "$CSV"
+  fi
+}
+
+for sz in "${sizes[@]}"; do
+  for sll in "${slls[@]}"; do
+    for cap in "${mags[@]}"; do
+      echo "[sweep] size=$sz sll=$sll cap=$cap cycles=$cycles"
+      run_case "$sz" "$sll" "$cap"
+    done
+  done
+done
+
+echo "[done] CSV: $CSV"
+grep -E '^(size|16|32|64),' "$CSV" | sed -n '1,30p' || true
+