fb18d2c41d
Improve chat context: build_context() now returns metadata about auto-found notes, emitted as an SSE event so the frontend can display context pills showing which notes influenced the response. Users can promote notes for deeper context (+) or exclude irrelevant ones (x). A note picker lets users manually attach notes. Multi-word search uses per-term AND matching, and auto-search iterates keywords individually for broader OR-style coverage. Standardize styling: introduce CSS design tokens (--radius-sm/md/lg/pill, --color-success/warning/overlay, --focus-ring) and migrate all components to use them. Fix header alignment to full-width, add active nav link state, replace hardcoded colors with CSS variables, and normalize button padding. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>