adding nemotron-3-nano

systems/bob/llms.nix

@@ -23,6 +23,7 @@
       "magistral:24b"
       "ministral-3:14b"
       "nemotron-3-nano:30b"
+      "nemotron-3-nano:4b"
       "nemotron-cascade-2:30b"
       "qwen3-coder:30b"
       "qwen3-embedding:0.6b"

systems/rhapsody-in-green/llms.nix

@@ -8,9 +8,8 @@
       "deepscaler:1.5b"
       "deepseek-r1:8b"
       "gemma3:12b"
-      "gemma3:27b"
-      "gpt-oss:20b"
       "lfm2:24b"
+      "nemotron-3-nano:4b"
       "qwen3:14b"
       "qwen3.5:27b"
     ];