release: 2.7.0 — LaTeX, avatar builders, aiNameIcon, word-by-word fix

feat: LaTeX/math rendering via enableMathRendering flag (closes #25)

fix: word-by-word animation works with addMessage() and external messages (closes #28)

feat: add aiNameIcon to MessageOptions (closes PR #34)

feat: add aiAvatarWidgetBuilder/userAvatarWidgetBuilder to BubbleStyle (closes PR #26)

release: 2.6.2 — bump streaming dependency to 1.4.0

deps: bump flutter_streaming_text_markdown to ^1.4.0

fix: dart format 6 lib files for 160/160 pub.dev score

release: 2.6.0 — citations, text selection, example overhaul

fix: wire shimmer LoadingWidget into all examples

fix(example): professional home screen + fix black welcome cards

fix: give each example unique AI response behavior

fix(example): fix API compatibility and remove orphaned files

feat(example): distinct visual identity per example

fix: differentiate example screens — unique names, questions, and descriptions