DEVELOPMENT.md: keep inference-host logs in one directory

DEVELOPMENT.md

@@ -471,29 +471,32 @@ logging on that host first and stop it only when the run has finished.**
 
 Run each command in its own terminal on the inference host. `tee` writes each
 line as it arrives, so what happened in the seconds before a crash or a forced
-reboot survives on disk.
+reboot survives on disk. Every log goes into one directory, so a campaign's
+evidence stays together and is easy to archive or remove afterwards:
 
 ```bash
+mkdir -p "$HOME/inference-host-logs"
+
 # Power, temperature, utilisation and PCIe link state, once a second
 nvidia-smi --query-gpu=timestamp,pcie.link.gen.current,pcie.link.width.current,power.draw,temperature.gpu,utilization.gpu \
-  --format=csv -l 1 | tee "$HOME/gpu-link-$(date +%F-%H%M).csv"
+  --format=csv -l 1 | tee "$HOME/inference-host-logs/gpu-link-$(date +%F-%H%M).csv"
 
 # The driver's own sampling: power, utilisation, clocks, memory, ECC and throttling
-nvidia-smi dmon -s pucvmet -d 5 | tee "$HOME/gpu-dmon-$(date +%F-%H%M).log"
+nvidia-smi dmon -s pucvmet -d 5 | tee "$HOME/inference-host-logs/gpu-dmon-$(date +%F-%H%M).log"
 
 # Kernel and Ollama messages, live. The `+` is an OR: `journalctl -k -u ollama`
 # asks for messages that are both kernel messages and the ollama unit's, which
 # is none, and writes an empty log.
 journalctl -f -o short-iso _TRANSPORT=kernel + _SYSTEMD_UNIT=ollama.service \
-  | tee "$HOME/ollama-kernel-watch-$(date +%F-%H%M).log"
+  | tee "$HOME/inference-host-logs/ollama-kernel-watch-$(date +%F-%H%M).log"
 ```
 
 If the GPU faults, find the moment and then read what the card was doing just
 before it:
 
 ```bash
-grep -iE 'xid|fallen off|nvrm' "$HOME"/ollama-kernel-watch-*.log
+grep -iE 'xid|fallen off|nvrm' "$HOME"/inference-host-logs/ollama-kernel-watch-*.log
-awk -F', ' 'NR>1 && $4+0 > max {max=$4+0; at=$1} END {print "peak W", max, "at", at}' "$HOME"/gpu-link-*.csv
+awk -F', ' 'NR>1 && $4+0 > max {max=$4+0; at=$1} END {print "peak W", max, "at", at}' "$HOME"/inference-host-logs/gpu-link-*.csv
 ```
 
 A fault that follows sustained draw at the card's power limit points to power