NOTBOK-001: The Missing Screws Incident - Source-Conditioned Procedural Constraint Drift and Epistemic Framing in a Fictional IKEA/NotebookLM Audio Overview

NOTBOK-001 is a single-case, transcript-grounded observational study of an AI-generated NotebookLM Audio Overview, created from a satirical source presenting a fictional IKEA acquisition of NotebookLM and an eight-step knowledge-bookcase assembly manual. A customized prompt required two hosts to enact the numbered sequence, avoid the exact phrase "Let's unpack this," identify six specifically missing evidence "screws" (M1-M6), postpone conclusions until the inventory was complete, report an incomplete assembly, and end with a prescribed sentence. The supplied transcript shows a distinctive mixed outcome: the prohibited phrase occurs once and is corrected within the generated dialogue; all six missing-evidence identifiers are discussed; the four required inspection counts and caveats are reported; the hosts explicitly mark the scenario as fictional; and the programme largely becomes an explanatory critical-thinking discussion instead of a strict eight-step performance. The individually prescribed spoken MISSING declarations, exact interruption line and exact final sentence are not reproduced as requested. This deposit contains the generated audio and transcript uploaded by the depositor, with a companion formal report, exact fictional source, exact customization prompt, coded observations, evidence anchors, machine-readable results and integrity checks in the supplemental ZIP. It is not evidence of an actual acquisition, and it does not establish a generalizable model effect. The present report was prepared from supplied text; direct audio-to-transcript verification was not performed.