fix(messaging-ui): unreadable code chip on own messages + raw markers in previews

Two bugs from the formatting work, both visible in the CRM messenger:

1. Inline code / code blocks were invisible in your OWN bubbles. `.miu-code` sets
   background: --miu-panel-2 (#1d1d26) while the is-mine override set only the
   colour to --miu-accent-text (#1a1206) — near-black on near-black, ~1.03:1
   contrast. The chip now tints the accent bubble (rgba(0,0,0,.16)) instead of
   using the panel colour, so it reads against any accent.

2. The conversation list showed the raw last message, so a strikethrough message
   previewed as "~crazy~". Adds stripMarkup() — markers off, code unwrapped,
   nesting handled, honouring the same word-boundary rule so snake_case_name and
   "5 * 3" survive — and uses it for the preview line.

Bumped to 0.1.10. SDK suite: 17 files / 98 tests green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

packages/iios-messaging-ui/src/index.ts

@@ -10,7 +10,7 @@ export { useChannels } from './hooks/use-channels';
 export { useMembers } from './hooks/use-members';
 export { isOwnMessage } from './types';
 // Message-body markup (bold/italic/strike/code/links + mentions) as a safe ReactNode tree.
-export { renderRichText, safeHref } from './rich-text';
+export { renderRichText, safeHref, stripMarkup } from './rich-text';
 
 // Rendered UI. Pair with the './styles.css' export (or override the --miu-* tokens).
 export { Messenger } from './components/messenger';