BUT-IT-WORKS-001: Source-Conditioned Claim Amplification in an AI-Assisted Software-Startup Post-Mortem

Qualitative single-case source-to-claim audit of a first-person software-startup closure account and two derivative documents. Includes an unchanged user-supplied strategic post-mortem and Deep Dive transcript, a manually curated 39-claim ledger with source locators and classification rationale, a correction register, reproducibility checks and provenance details. Significant findings involve a fabricated company name derived from a greeting, mischaracterization of IPFS maintainer funding as protocol death, and confusing the closure of side projects with retirement from software engineering. Observations are illustrative and do not measure general model hallucination rates or independently prove startup finances, security incidents or business causation. The original third-party transcript is linked and hashed, but not republished in the open archive.