Publish harness and TUI open-source

initial sync from the monorepo

crates/codegen/xai-grok-shell/changelogs/0.2.57.md

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+# 0.2.57
+
+## Features
+
+- Improved resilience to network blips during long responses by resuming instead of failing the turn.
+- **`grok plugin install <name>`** now resolves plugins from registered marketplaces instead of only local paths.
+
+## Bug Fixes
+
+- Fixed cases where long-running conversation compaction could hang indefinitely.
+- Notification hooks now fire only for real user-attention events and no longer trigger constantly during tool use.
+- Fixed literal display of HTML entities such as &lt; and &gt; in responses and tool output.
+- **Typing `[`** in the pager prompt no longer appears delayed.
+- **Copy** now tries all available Linux clipboard tools so paste works reliably in more terminals.
+