Move scientific design presets into a public, validated preset catalog

[DennisWayo]

Problem Statement

Studio includes useful scientific circuit presets, but they are hard-coded in Swift. As SchroSIM becomes a design tool, presets should be public artifacts that can be reviewed, cited, versioned, validated in CI, and reused by docs, CLI examples, and the Gottesman software site.

Proposed Solution

Create a public preset catalog under docs/config or docs/examples/design-presets:

• JSON schema for scientific presets,
• citation and DOI/source metadata,
• recommended backend, seed, mode count, slot count,
• nodes and edges,
• mapping notes and approximation boundaries,
• script to validate every preset compiles and runs.

Update Studio to load presets from the catalog with a fallback only for development.

Acceptance Criteria

• Presets are data files, not hard-coded arrays.
• CI validates every preset for schema, compile, and at least one runtime backend.
• Studio shows citation, mapping note, and compatibility status from catalog data.
• Docs render a preset gallery from the same source files.
• Adding a new preset requires no Swift source edit.

Validation

bash scripts/swift-test.sh
bash scripts/cv-validation-suite.sh --runtime both

Evidence

• core-swift/Sources/schrosim-studio/StudioStore.swift
• docs/examples/
• docs/config/