939387104b
Add GET /workflow/upcoming endpoint that reads .story_kit/stories/upcoming/ and returns story IDs with names parsed from frontmatter. Add UpcomingPanel component wired into Chat view with loading, error, empty, and list states. 12 new tests (3 backend, 9 frontend) all passing. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>