ClinIQ Nexus — a physician-first clinical intelligence workspace on Databricks (synthetic records only). Question it answers: what has happened with this patient, what matters, and where is the evidence? Patient brief: items needing attention are derived deterministically from the records. An unanswered portal message, a recent admission (discharged), abnormal results, an unsearchable scan. Every item links to its source — here the discharge summary PDF, read from a Unity Catalog volume. Longitudinal journey: encounters, notes and PDFs, medication changes, results, messages and imaging. Trends: one chart per measure with units, LOINC codes, reference bands and the inpatient stay shaded. Medication history from FHIR-style orders: started, changed, stopped and inpatient-only. Ask the record: retrieval is limited to this patient; the answer must pass grounding checks and a second-model verifier. Each claim cites its source — notes, PDF pages, orders — and opens the exact passage. The cited passage is highlighted in the source record. Requests for recommendations are declined by policy; related documentation is listed instead. Care coordination: threads awaiting reply or routed without completion, with waiting time. Imaging: real DICOM handling (window/level, header metadata, linked report) on synthetic test patterns — never interpreted. Operations: encounter mix, documentation coverage, communication patterns and 14 live data-integrity checks. Architecture: Unity Catalog volume → serverless ingestion → Delta → SQL warehouse → FastAPI + React app → Foundation Model APIs. Synthetic demonstration — not a clinical decision-support system, EHR or HIPAA-validated software.