style(frontend): update logo to SVG and adjust sizing

feat(frontend): real logo, smooth scroll on results, mosaic gradient

feat: search catalogue UI, data cleanup, router decade detection

refactor(frontend): pass stories as prop to Landing

feat(frontend): wire App to Results view, update StoryCard

feat(frontend): add Results.svelte catalogue view

refactor(frontend): replace SSE client with sync search, delete chat

feat(ui): view transitions, story grid 2x2, logo links, scroll UX

feat(mosaic): horizontal scrolling rows, random order, click-through links

fix(mosaic): gate animations behind animationReady, remove loading=lazy

feat(mosaic): JS orchestration — mount, measure heights, resize handler

feat(mosaic): masonry CSS with infinite scroll animations and hover pause

feat(mosaic): masonry column template with duplicated content for loop

feat(mosaic): add shuffle, column distribution, and state management

feat: correct story links, loading UX, slug-based card filtering

feat: suggest related topics when no stories match

feat: show 'no matching stories' when no cards are cited

feat: wire Landing and Chat views with fade transition

feat: Landing view with immersive mosaic and example pills

feat: Mosaic component with drift animation and hover tooltips

feat: Chat view with streaming messages and story cards

feat: Message component with story card grid

feat: StoryCard component with vertical/horizontal variants

feat: API client with SSE parsing and chat store

feat: SearchBar glassmorphism component

feat: Svelte project scaffold with design tokens