tui: add -control flag to show runtime dashboard for CLI-launched runs

[grumvalski]

No description provided.

[adubovikov]

@copilot resolve the merge conflicts in this pull request

[Copilot]

@copilot resolve the merge conflicts in this pull request

Merge conflicts resolved in d5d447d. The conflict in cmd/gossip/main.go was between the -control flag logic from this branch and the cfg.ToolVersion = GetShortVersionString() addition from main — both are now included.

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✅ grumvalski
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