feat: multi-provider LLM support, prominent chat, design pass, and new analytics

feat(theme): tinted canvas + visual tokens

chore: checkpoint sidebar nav + i18n work-in-progress before Decision Stack redesign

feat: add Chat tab — bounded Q&A agent over stored filings and transcripts

feat: wire Exposure Radar into app — nav, sidebar portfolio input, brief persistence hook

fix: split line-height selector off form controls; annotate SPACE_6

feat(theme): add typographic/spacing scales and update global CSS (Phase 1a)

refactor: visual system normalization — violet→IA only, glyph unification, token hygiene (Lot 4)

feat: add Quality & Tone deep-dive section (Lot 2)

fix: nav group label alignment + impact badge bubble dots

fix: verdict layout, N/A market pulse, impact badge colors

feat: add impact badge to all sourced facts

style: remove alignment spaces from AI color tokens

feat: add AI interpretation color tokens to theme

deploy: Primer app for HF Spaces — clean orphan history