Calls ai.redact@1 to mask names, identifiers, addresses, financial and health data before downstream extraction. Required by resources/guardrails.yaml (GDPR Art. 5 minimisation). Calls ai.extract@1 with the redacted text and the VDVC v1.1 output schema (resources/schemas/vdvc-semantic-summary.schema.json). The host's AI agent must produce output that validates against that schema. Output records aiModelVersion + aiConfidenceScore per EU AI Act Art. 13. Calls event.emit@1 to publish a CloudEvent containing the extracted semantic summary. Downstream processes consume this event.