[ricardomiron]

This pull request introduces the first public, version-controlled draft of the technical criteria for the DPGs for DPI Collection, following the structure of #210 (DPGs for AI). The collection brings together open-source solutions that function as foundational building blocks for digital public infrastructure — identity, payments, data exchange, registries, and trust services — reusable across sectors, interoperable through open standards, and deployable at national scale.

The criteria operate as a three-layer framework:

1. prerequisite DPG Standard compliance (Layer 1),
2. a DPI-relevance gateway covering domain fit, cross-sector reusability and population-scale intent (Layer 2), and five architecture criteria aligned with CDPI's DPI architecture principles
3. (Layer 3, A–E): interoperability, minimalist/reusable design, ecosystem enablement, federation readiness, and security & privacy at scale. Each criterion states only what it adds beyond the DPG Standard and Maturity Model.

The collection is co-stewarded by the DPGA Secretariat, Co-Develop and CDPI.

Files

• collections/dpgs-for-dpi/README.md — overview, objectives, feedback questions
• collections/dpgs-for-dpi/criteria.md — Layers 1–3, checklist, maturity mapping
• collections/dpgs-for-dpi/CHANGELOG.md — v0.1.0 draft (supersedes the earlier flat five-criteria version)
• collections/README.md — adds the DPI collection to the index

Note: this branch is stacked on #210 (it edits collections/README.md created there), so it should merge after #210.

[BolajiAyodeji]

LGTM! One minor comment.

[BolajiAyodeji]

LGTM! Thank you.