Research inputs

Pipeline stages 1–2: the vectorized-execution literature review and the open-source opportunity analysis. These are immutable inputs to the Design Charter and PRD — they are not edited as the project evolves; they record why Quiver exists and what it deliberately is not.

Contents: vectorized-execution-engine-survey.md, open-source-opportunity-analysis.md.

Owner: maintainer. Changes: none expected (historical record).