[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).

lw/.pi/agent/settings.json

@@ -2,6 +2,12 @@
   "defaultProvider": "duskadiy",
   "defaultModel": "Qwen3.6-35B-A3B-Thinking",
   "defaultThinkingLevel": "medium",
+  "thinkingBudgets": {
+    "minimal": 256,
+    "low": 512,
+    "medium": 1024,
+    "high": 1024
+  },
   "theme": "catppuccin-mocha",
   "quietStartup": false,
   "collapseChangelog": true,