- Replace static Space Grotesk weights with a variable font (300-700) and
bump the type scale across all tiers for a clearer weight hierarchy
- Add dot-grid texture, ambient glow, layered shadows with machined edge
highlights, and entrance/hover/press micro-interactions (reduced-motion aware)
- Refine sidebar and session list: sliding amber active indicator, search
focus ring, SESSIONS label header, living status dot, backdrop-blurred bars
- Replace inconsistent glyph icons with a unified Lucide-style SVG icon set;
rename 工具&Skills to 工具 and enlarge nav font
