Publish harness and TUI open-source

initial sync from the monorepo

crates/codegen/xai-grok-shell/changelogs/0.2.49.md

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+# 0.2.49
+
+## Features
+
+- Marketplace plugin listings now show skills, MCP servers, and commands when the catalog is published.
+- Mermaid flowcharts now render with fewer avoidable edge crossings.
+- **stateDiagram** mermaid blocks now render as Unicode diagrams instead of source fallback.
+
+## Bug Fixes
+
+- **Skill reloads** no longer corrupt active tool calls or produce duplicate results in the conversation.
+- **grok --resume** now correctly finds the real session instead of failing on empty image-only folders.
+- Pasted images and relative paths now use the correct directory when resuming a session created elsewhere.
+- **Mermaid flowcharts** now correctly render node groups, arrow endings, self-loops and line styles.
+- **Fixed** "unknown session id" errors that occurred after the leader process crashed or was killed.
+- **Pasted images** now survive interjections and queue edits instead of being dropped.
+- **Managed MCP connectors** (Slack, Linear, etc.) now appear correctly when using leader mode.
+