refactor(fe): replace utility classes with semantic CSS across components
- add ~400 lines of clean semantic CSS classes (msg-*, panel-*,
search-*, filter-*, feed-*, auth-*, sidebar-*, etc.)
- convert message_card.rs: .message-row -> .msg-row, .message-card
-> .msg-card, remove all tailwind utility classes
- convert messages/mod.rs: .card -> .panel-card, .search-row ->
.search-bar, .filter-chip -> .filter-chip-v2, .message-stats ->
.stats-bar
- convert message_feed.rs: .space-y-4 -> .feed-wrap, .empty-state
-> .feed-empty
- convert auth.rs: inline styles -> .auth-* semantic classes
- convert sidebar: .btn.btn-ghost -> .sidebar-btn.is-active
- keep utility classes in CSS for backward compatibility
with non-refactored components (dashboard, live)
asepharyana
5204a07976