story-kit: start 196_story_render_code_fences_in_user_chat_messages

.story_kit/work/2_current/196_story_render_code_fences_in_user_chat_messages.md

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+---
+name: "Render code fences in user chat messages"
+---
+
+# Story 196: Render code fences in user chat messages
+
+## User Story
+
+As a user chatting with the bot via the web UI, I want code fences (```) in my messages to be rendered as formatted code blocks, so that code snippets I share are readable.
+
+## Acceptance Criteria
+
+- [ ] Code fences in user messages are rendered as styled code blocks
+- [ ] Inline code with single backticks is also rendered appropriately
+- [ ] Rendered code blocks are visually distinct from regular text
+
+## Out of Scope
+
+- TBD