- Hide sidebar, header, chat input, and scroll button when printing
- Reset backgrounds to white, text to black for readability
- Code blocks get light background with borders
- Tool calls styled for print (compact, bordered)
- External links show their URL in parentheses
- Chat scroll area becomes fully visible (no overflow)
- Messages avoid page-break-inside for clean pagination
- Remove shadows and backdrop filters in print
- Replace div with <main> for primary chat pane (screen reader landmark)
- Replace div with <section> for split pane
- Add skip-to-content link for keyboard navigation (Tab → jump to chat input)
- Add aria-expanded and aria-label to tool call badge buttons
- Add id='chat-input' to textarea for skip link target
- Add i18n keys for new ARIA labels (EN + FR)
- User messages appear instantly with 'sending' state (dimmed, clock icon)
- Transitions to 'sent' (checkmark) when server acknowledges
- Shows error state (alert icon, retry visible) if send fails
- Applied to both primary and secondary sessions
Suppress 3 react-hooks/set-state-in-effect warnings with targeted
eslint-disable comments. These are intentional patterns:
- ChatInput: restore draft text on session switch
- MessageSearch: reset active index on query change
- ToolCall: sync open state with global collapse/expand toggle
Lint now passes with 0 errors and 0 warnings.
Replace ~150 hardcoded Tailwind color classes (bg-zinc-*, text-zinc-*,
border-white/*, text-cyan-*, bg-cyan-*) with CSS custom properties
(--pc-*) across all 17 components.
Add @theme block in index.css for Tailwind v4 theme-aware utility
classes (bg-pc-elevated, text-pc-text, border-pc-border, etc.).
Add --pc-hover, --pc-hover-strong, --pc-separator variables per theme
(white/alpha for dark/OLED, black/alpha for light).
Theme switcher (dark/light/OLED) now actually works — all UI elements
respond to theme changes in real-time.
Fixes#55
- Add ThemeContext with CSS custom properties for all base colors
- Three theme modes: Dark (default), Light, OLED Black
- Six accent colors: Cyan, Violet, Emerald, Amber, Rose, Blue
- Theme switcher dropdown in header (palette icon)
- Persisted in localStorage
- CSS variables replace hardcoded hex colors in index.css and components
- i18n support (EN/FR) for theme labels
- Lightweight i18n system in src/lib/i18n.ts (no external deps)
- All UI strings extracted to translation keys
- English (default) and French locales included
- Set VITE_LOCALE=fr in .env for French UI
- Fallback to English for unknown locales
- Replace all French UI strings with English (Connected, Thinking, Result, Send, etc.)
- Add role="log" + aria-live="polite" to chat message area
- Add role="form" + aria-label to message input area
- Add aria-label to sidebar toggle, attach file, send, and textarea
- Add role="banner" to header, role="navigation" to sidebar
- Add role="application" to app root
