David decided: Changed default workspace model to Gemini 3 Flash and gated agent mode to Pro

David issued the decision directly:

i want you to change the default model in the dropdown from 'auto' to gemini 3 flash. and also, i want you to make that 'agents -- has its own computer' only a pro feature. ie. similar to the other models that are blocked for free/plus users, block that model too for free/plus users in the model dropdown. go onto the production db and codebase and study how plan limits work and then make this change.

This gated the highest-capability mode (computer-use agents) to paying users, while moving the default to a specific model rather than the opaque 'auto' setting.