Please explain the motivation behind the feature request.
When creating parameterized recipes, authors might want to use dynamic parameter names in activity bubbles for better context/personalization. However, parameters in activities currently display as literal {{ parameter_name }} text instead of being substituted with actual values. (e.g., "Review {{ language }} code" instead of a meaningful "Review Python code").

Describe the solution you'd like
Parameter substitution should work in activity bubbles, just like it does in instructions and prompts. When users provide parameter values, activity bubbles should display the substituted text with actual values instead of literal {{ }} syntax.

Describe alternatives you've considered
Authors can write generic activity text without parameters (reduces personalization) or create separate recipes for different contexts if the context is critical

Additional context
Parameters work great in recipe instructions and prompts but fail to substitute in activity bubbles (or titles). Since activities appear as clickable bubbles in Desktop, parameter substitution would be a nice feature.

• I have verified this does not duplicate an existing feature request