Small product update for StoryWeave

I shipped v0.3.0 today, focused on making the long-form writing workflow more coherent.

The main improvement is the connection between outline, chapter, and scene generation. Outline chapters can now be synced into the workspace, and scene generation uses chapter-level context so the generated scenes are better aligned with the current chapter goal.

This is part of an ongoing effort to make StoryWeave less like a one-off AI text generator and more like a structured writing workspace for longer stories.