StoryWeave v0.8.0: Thinking Records for author-controlled AI writing workflows

I shipped StoryWeave v0.8.0 today.

This update adds Thinking Records: a Markdown timeline for the writing process itself.

What changed:
- Writing-assistant discussions are now saved as Markdown records.
- The records cover site help, web research, story brainstorming, and AI review.
- Early exploration can stay "Unfiled" before a project exists.
- Project-specific thinking can stay attached to the current project.
- Project foundation fields can be revised after creation.
- Later outline generation, review, and chapter planning use the latest saved project foundation when the author triggers them.

This is part of the same product direction as previous releases: StoryWeave is meant to be an author-controlled workspace, not a one-click novel generator. AI can help with research, brainstorming, planning, and review, but the writer keeps the judgment and the final control.