User message bubbles adapt to light/dark mode, but agent message bubbles stay dark in both themes. In light mode this looks inconsistent and heavy against the light chat background.
Expected behavior
Dark mode: agent bubble stays dark; text stays light (readable)
Light mode: agent bubble is light; text is dark (readable)
User bubble theme behavior unchanged
Acceptance criteria
Agent bubble background follows active theme (light bg in light mode, dark bg in dark mode)
Agent text color contrasts correctly with the bubble in both themes
User bubble still theme-aware as today
No regression on readability / contrast for long agent replies
## Problem
User message bubbles adapt to light/dark mode, but **agent message bubbles stay dark** in both themes. In light mode this looks inconsistent and heavy against the light chat background.
## Expected behavior
- **Dark mode:** agent bubble stays dark; text stays light (readable)
- **Light mode:** agent bubble is light; text is dark (readable)
- User bubble theme behavior unchanged
## Acceptance criteria
- [ ] Agent bubble background follows active theme (light bg in light mode, dark bg in dark mode)
- [ ] Agent text color contrasts correctly with the bubble in both themes
- [ ] User bubble still theme-aware as today
- [ ] No regression on readability / contrast for long agent replies
## Context
- Platform: chat UI (mobile + desktop)
- Area: agent/assistant message bubble styling / theme tokens
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Problem
User message bubbles adapt to light/dark mode, but agent message bubbles stay dark in both themes. In light mode this looks inconsistent and heavy against the light chat background.
Expected behavior
Acceptance criteria
Context