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- Add plans/idea-3-powershell-removal.md: Phase C goal is to eliminate the pwsh dependency from the Linux host by porting the remaining PS scripts (bench run, validate host, smoke run) to Python sub-commands. - Update idea-3-esxi-support.md header: Fase C → Fase D. - Update ideas-overview.md: new four-phase table (A/B/C/D) with prerequisiti and criteri for Phase C. - Rename all "Hook futuri Fase C" (ESXi) → "Hook futuri Fase D" in implementation-plan-A-B.md; add Phase C/D entries to summary and references section. - Update PhaseB-user-checklist.md end note and CLAUDE.md to point Phase C → pwsh removal, Phase D → ESXi. Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>