Jannis Braun
95fc6f0693
feat: Phase 7 Aether Drift — typography, spacing & detail alignment
Align all component typography to the design prototype's exact measurements:
- Message author: 16px bold → 15px semibold
- Message text: 16px → 15px, line-height 1.5
- Timestamps: 12px → 11px
- Category headers: 12px bold → 11px medium, #484854 color
- Member/activity names: 15px → 13.5px with tighter line-height
- Member activity text: 12px → 11px
- Section headers: 12px → 10.5px
- Channel header names: 15px with -0.02em tracking
- Channel topic: 12px → 13px
- Header padding: 16px → 20px
- User area avatar: 32px → 34px