Fix compression implementation and reduce benchmark timeouts

- Revert streaming compression to non-streaming approach (fixes decompression errors)
- Reduce client timeout in benchmark from 600s to 60s
- Simplify wait time calculation in benchmark to fixed 2s

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

benchmark_network.sh

@@ -233,19 +233,14 @@ run_fastsync() {
     local output
     local compress_flag=""
     [ "$use_compress" -eq 0 ] && compress_flag="-c"
-    output=$(timeout 600 "$CLIENT_BIN" -h "$HOST" -p "$port" -s "$SRC_DIR" -n "$nconn" $compress_flag 2>&1) || true
+    output=$(timeout 60 "$CLIENT_BIN" -h "$HOST" -p "$port" -s "$SRC_DIR" -n "$nconn" $compress_flag 2>&1) || true
     
     # Extract actual transfer time from client output
     local transfer_ms=$(echo "$output" | grep -oP 'ms=\K[0-9.]+' || echo "0")
     local transfer_ms_int=$(echo "$transfer_ms" | awk '{printf "%d", $1+0}')
     
-    # Aggressive wait times for quick progress checks
-    # Formula: max(transfer_time/1000 + 1s, 1s) + 1s extra for 1 conn
-    local wait_time=$(( transfer_ms_int / 1000 + 1 ))
-    [ "$nconn" -eq 1 ] && wait_time=$(( wait_time + 1 ))
-    [ "$wait_time" -lt 1 ] && wait_time=1
-    
-    sleep $wait_time
+    # Use fixed short wait time since timeout already limits client
+    sleep 2
     kill "$spid" 2>/dev/null || true
     wait "$spid" 2>/dev/null || true
     sync