NOVA Presentation Descriptive editorial chapter guide; not a speech transcript or complete action log. GUI states and native outcomes are edited; repetition, checks and waiting are condensed. External Codex-supervised controller using NorthCUA Desktop MCP tools. Tool-interface showcase, separate from native Harness Runtime demos and NorthCUA checkpoint benchmarks. A fictional product brief, illustrative images and data become six slides in Impress. Calc computes means; editable charts and a signal-path diagram carry the scientific story. The paper describes reading back the mean SNR of 17.6268 at 5 ms after chart transfer. The deliverables include an editable presentation, calculation workbook and PDF. 00:00:00.000–00:00:03.250 Opening 00:00:03.250–00:00:24.375 01 / Place the image and set type 00:00:24.375–00:00:56.375 02 / Calculate and create charts 00:00:56.375–00:01:11.125 03 / Assemble editable charts and imagery 00:01:11.125–00:01:38.250 04 / Build components, then connect them 00:01:38.250–00:01:48.250 05 / Compose the workflow and disclose 00:01:48.250–00:01:53.750 06 / Export the native presentation 00:01:53.750–00:01:58.750 07 / Finished slides 00:01:58.750–00:02:01.750 Closing