[BREAKING] Cline CLI 3.0.50: TUI themes, enforced plan mode, provider-wide retry fixes

Adds selectable TUI color themes and inherits SDK v0.0.70's behavior changes: plan mode now rejects file-editing shell commands outright rather than relying on prompting, and context-overflow and empty-response failures are recovered instead of surfacing as errors. If you relied on plan mode running mutating commands, that path is now blocked.

Tool: cline · Version: cli-v3.0.50 · Significance: 3/5 · BREAKING CHANGE · feature, fix, breaking, model-support