maaz519
c946f1e061
Composer becomes a <textarea> so the PLATFORM supplies text services: red spellcheck squiggles, right-click suggestions / add-to-dictionary, and mobile autocorrect (spellCheck + autoCorrect + autoCapitalize). Nothing shipped for it. Previously a single-line <input>, which Firefox does not spellcheck by default (layout.spellcheckDefault=1 checks multi-line only) and which could not hold a multi-line message at all. Enter sends, Shift+Enter (and IME composition) makes a newline, and the box grows with content. WhatsApp-style markup: *bold*, _italic_, ~strike~, `code`, ```fenced blocks```, plus bare URLs. Cmd/Ctrl+B/I/E and a small toolbar wrap the selection in markers. Messages stay PLAIN TEXT on the wire, so stored history and older clients are unaffected — formatting is purely a render concern. renderRichText() returns a ReactNode tree and never uses dangerouslySetInnerHTML, so message text cannot inject markup; links are restricted to http/https/mailto (safeHref) to close the javascript: vector. Code is tokenized first and its contents stay literal; markers require word boundaries so snake_case_name and "5 * 3" are not mangled. Bumped to 0.1.9. SDK suite: 17 files / 95 tests green. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>