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- Components view: three presence sections (Vorhanden / Nicht vorhanden / Geloescht) with bidirectional move + soft-delete (audit-visible, restorable), so the expert corrects the engine's best-effort negation in both directions. - CE marking per component (bought robot/actuator/SPS) with a clear "validate the integrated safety function (PL/SIL)" note when also safety-relevant. Safe semantics: hazards are not suppressed, only provenance is surfaced. - Project-create form: machine type is now a grouped dropdown from the engine's controlled vocabulary (GET /machine-types) instead of free text. - Knowledge graph: component→hazard edges use the real component_id. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>