feat: switch FISTO to dolphin-mistral with dolphin-phi fallback

Benchmarked uncensored models for the gregtime FISTO bot. dolphin-mistral
produces the best uncensored creative content, dolphin-phi is faster fallback.
Added OLLAMA_NUM_PREDICT env var (300) and bumped image to 3.3.0.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ansible/roles/ollama/defaults/main.yml

@@ -0,0 +1,6 @@
+---
+ollama_models:
+  - dolphin-phi
+  - dolphin-mistral
+ollama_host: "127.0.0.1"
+ollama_port: 11434