chore(halo): model update

systems/x86_64-linux/halo/models.ini

@@ -15,16 +15,16 @@ fit                 = on
 c                   = 131072
 
 [coder]
-hf                  = unsloth/Qwen3.6-27B-MTP-GGUF:UD-Q8_K_XL
+hf                  = unsloth/Qwen3.6-27B-MTP-GGUF:Q6_K
 spec-type           = ngram-simple,draft-mtp
 spec-draft-n-max    = 5
-spec-draft-p-min    = 0.74
 threads-batch       = 16
 temp                = 0.6
 top-p               = 0.95
 top-k               = 20
 min-p               = 0.0
-parallel            = 4
-c                   = 1048576
+presence-penalty    = 1.5
+parallel            = 2
+c                   = 524288
 load-on-startup     = true
 chat-template-kwargs = {"preserve_thinking": true}