Milestone X: The Future

# What
This is a placeholder milestone for all tickets that haven't been sorted into one of the proper milestones yet.

# Why
This makes it easier to capture future ambitions without needing to create an overly long and uncertain roadmap.

# How
See sub-issues.

This issue is a placeholder milestone rather than an implementation task. Start by reviewing the sub-issues referenced in the body and choose a concrete ticket with a defined change and completion criteria; this issue itself does not identify files, tests, or work that can be completed.

Written by the indexing model from the issue text.