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>

benchmarks/scripts/run_full_benchmark.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+# Full benchmark with jemalloc & mimalloc via LD_PRELOAD
+
+set -e
+
+WARMUP=2
+RUNS=50
+OUTPUT="full_benchmark.csv"
+
+echo "allocator,scenario,iterations,avg_ns,soft_pf,hard_pf,rss_kb,ops_per_sec" > "$OUTPUT"
+
+SCENARIOS=("json" "mir" "vm" "mixed")
+ALLOCATORS=(
+    "hakmem-baseline:./bench_allocators_hakmem:"
+    "hakmem-evolving:./bench_allocators_hakmem:"
+    "system:./bench_allocators_system:"
+    "jemalloc:./bench_allocators_system:LD_PRELOAD=/lib/x86_64-linux-gnu/libjemalloc.so.2"
+    "mimalloc:./bench_allocators_system:LD_PRELOAD=/lib/x86_64-linux-gnu/libmimalloc.so.2"
+)
+
+total_runs=$((${#ALLOCATORS[@]} * ${#SCENARIOS[@]} * RUNS))
+current=0
+
+echo "========================================"
+echo "Full Benchmark: jemalloc & mimalloc"
+echo "========================================"
+echo "Warmup: $WARMUP, Runs: $RUNS"
+echo "Total: $total_runs runs"
+echo ""
+
+for alloc_spec in "${ALLOCATORS[@]}"; do
+    IFS=':' read -r alloc_name binary env_prefix <<< "$alloc_spec"
+    
+    echo "📊 Allocator: $alloc_name"
+    
+    for scenario in "${SCENARIOS[@]}"; do
+        echo "  Scenario: $scenario"
+        
+        # Warmup
+        for ((i=1; i<=WARMUP; i++)); do
+            if [ -n "$env_prefix" ]; then
+                $env_prefix $binary --allocator "$alloc_name" --scenario "$scenario" --iterations 1 >> /dev/null 2>&1 || true
+            else
+                $binary --allocator "$alloc_name" --scenario "$scenario" --iterations 1 >> /dev/null 2>&1 || true
+            fi
+        done
+        
+        # Real runs
+        for ((i=1; i<=RUNS; i++)); do
+            current=$((current + 1))
+            printf "\r    Progress: %d/%d" "$current" "$total_runs"
+            
+            if [ -n "$env_prefix" ]; then
+                $env_prefix $binary --allocator "$alloc_name" --scenario "$scenario" --iterations 1 2>/dev/null | grep "^$alloc_name," >> "$OUTPUT" || true
+            else
+                $binary --allocator "$alloc_name" --scenario "$scenario" --iterations 1 2>/dev/null | grep "^$alloc_name," >> "$OUTPUT" || true
+            fi
+        done
+        echo ""
+    done
+done
+
+echo ""
+echo "✅ Benchmark completed: $OUTPUT"
+wc -l "$OUTPUT"