[Sync] LLM clients → Qwen3.6-35B-A3B-Thinking default, Ornith preset, fl GPU monitor abbrs

Re-export of private HEAD 73b4a65: default-model flip + 8k thinking budget
in the aichat/opencode/pi client configs, the Ornith-1.5-35B-A3B preset and
its gate bench in fl/.config/llamacpp, and the fl fish abbrs `vram` /
`vramx` with the new gpumon.sh (sysfs VRAM/GTT monitor).

fl/.config/llamacpp/gpumon.sh

@@ -0,0 +1,70 @@
+#!/bin/sh
+# gpumon.sh — one screen of GPU state for fl (RX 7600 XT · amdgpu · Vulkan backend).
+#
+#   watch -c -d -n 1 ~/.config/llamacpp/gpumon.sh    (fish abbr `vramx`, fl/.config/fish/host.fish)
+#   ~/.config/llamacpp/gpumon.sh                      (one shot)
+#
+# Why not rocm-smi: `--showmemuse` gives percentages and hides GTT. The freeze mode on this box is
+# VRAM overcommit spilling into GTT (system RAM) — see the config.ini header — so GTT and the
+# absolute free-VRAM figure (the ≥ 2.5 GB gate) are the numbers that matter. amdgpu exposes both
+# in sysfs: instant, no ROCm needed. Per-process VRAM comes from /proc/<pid>/fdinfo (kernel
+# drm-usage-stats), readable only for your own processes unless root. llama.service runs as the
+# login user (anon), so its children show up; if they ever don't:
+#   systemctl show -p User llama.service      and run this with sudo.
+# No absolute GTT alarm on purpose: bench.py judges GTT as a delta over a per-model baseline
+# (a browser-heavy desktop legitimately sits on a few GB) — `watch -d` shows the movement.
+#
+# GPUMON_HOST overrides the router host (default 127.0.0.1) — for a dry run from another box.
+
+dev=/sys/class/drm/renderD128/device
+host=${GPUMON_HOST:-127.0.0.1}
+port=11343
+
+echo "=== GPU (amdgpu sysfs) ==="
+if [ -r "$dev/mem_info_vram_used" ]; then
+  temp=$(cat "$dev"/hwmon/hwmon*/temp1_input 2>/dev/null | head -n 1)
+  awk -v u="$(cat "$dev/mem_info_vram_used")" -v t="$(cat "$dev/mem_info_vram_total")" \
+      -v g="$(cat "$dev/mem_info_gtt_used" 2>/dev/null)" -v gt="$(cat "$dev/mem_info_gtt_total" 2>/dev/null)" \
+      -v b="$(cat "$dev/gpu_busy_percent" 2>/dev/null)" -v m="$(cat "$dev/mem_busy_percent" 2>/dev/null)" \
+      -v c="${temp:-0}" 'BEGIN {
+    G = 1073741824
+    free = (t - u) / G
+    flag = free < 1.5 ? "   <<< HARD FLOOR (bench.py guard)" : free < 2.5 ? "   <-- below the 2.5 GB target" : ""
+    printf "VRAM  %5.2f / %5.2f GiB   free %5.2f GiB%s\n", u / G, t / G, free, flag
+    printf "GTT   %5.2f / %5.2f GiB   (VRAM spilled to RAM — must not grow while a model is resident)\n", g / G, gt / G
+    printf "busy  gpu %3d%%   mem %3d%%   edge %d°C\n", b, m, c / 1000
+  }'
+else
+  echo "no amdgpu sysfs under $dev — not the fl box, or the GPU is not renderD128"
+fi
+
+echo
+echo "=== processes holding the GPU  (VRAM from fdinfo · RSS · uptime; own-user only unless root) ==="
+# fuser puts the PID list on stdout (the pretty table of -v goes to stderr, hence no -v here).
+pids=$(fuser /dev/dri/renderD128 /dev/dri/card* 2>/dev/null | tr ' ' '\n' | grep -E '^[0-9]+$' | sort -un)
+if [ -z "$pids" ]; then
+  echo "(nothing visible — no /dev/dri here, or the GPU users belong to another user)"
+else
+  for p in $pids; do
+    [ -r "/proc/$p/fdinfo" ] || continue
+    # one drm client can be reachable through several fds — dedupe by drm-client-id, then sum
+    vram=$(awk 'FNR == 1 { cid = "" }
+                /^drm-client-id:/ { cid = $2 }
+                /^drm-(total|memory)-vram:/ { v[cid] = $2 }
+                END { for (k in v) s += v[k]; printf "%.2f", s / 1048576 }' /proc/"$p"/fdinfo/* 2>/dev/null)
+    name=$(cat /proc/"$p"/comm 2>/dev/null)
+    alias=$(tr '\0' '\n' < /proc/"$p"/cmdline 2>/dev/null | awk '$0 == "--alias" { getline; print; exit }')
+    set -- $(ps -o rss=,etime= -p "$p" 2>/dev/null | awk '{ printf "%.1f %s", $1 / 1048576, $2 }')
+    printf '%7s GiB  %7s  %-16s  rss %5s GiB  up %-11s %s\n' "$vram" "$p" "$name" "${1:-?}" "${2:-?}" "$alias"
+  done | sort -rn | head -n 15
+fi
+
+echo
+echo "=== router $host:$port — preset status (anything not unloaded; the sysfs line above is the truth for VRAM) ==="
+if out=$(curl -sf -m 1 "http://$host:$port/models" 2>/dev/null); then
+  printf '%s' "$out" \
+    | jq -r '.data[] | select(.status.value != "unloaded") | "\(.status.value)\t\(.id)"' 2>/dev/null \
+    | { grep . || echo "(nothing resident)"; }
+else
+  echo "(router not answering — systemctl status llama.service)"
+fi