Fusion

What’s changed

• Refactored feed pull runtime state into a dedicated fetch_state model with unified scheduling and capped backoff
• Hardened external URL handling and added baseline frontend security headers
• Kept toggled articles visible in filtered lists until refresh to prevent accidental context loss
• Added quick navigation from article details to the related feed
• Aligned content headers with the sidebar using a shared header component
• Restored expected scroll behavior in feed views
• Updated docs and API/frontend types to match the new pull-state architecture

Full Changelog: https://github.com/0x2E/fusion/compare/v1.0.0-beta.2…v1.0.0-beta.3