fal3/claude-skills-collection · skills/swiftdata-core-data-migrations/SKILL.md

swiftdata-core-data-migrations skillA

swiftdata-core-data-migrations is agent-read markdown (skill) from fal3/claude-skills-collection: Design, implement, diagnose, and test production schema migrations for SwiftData and Core Data, including VersionedSchema snapshots, SchemaMigrationPlan stages, lightweight and custom Core Data mappings, gradual adoption, CloudKit constraints, and forward-recovery planning. Use when a persistent model changes, an existing store must upgrade without data loss, a team is choosing between SwiftData and Core Data for migration requirements, or copied production stores need validation. Do not use for.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add fal3/claude-skills-collection/swiftdata-core-data-migrations@git:20260917.7201e74
Exact content
mdr add fal3/claude-skills-collection/swiftdata-core-data-migrations@sha256:e4d0aeab1eb9865e

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_uah2bqpslqw4kwtv.svg)](https://markdownregistry.com/a/art_uah2bqpslqw4kwtv)

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Versions

versioncommittedcommitsizeaudit
git:20260917.7201e74 latest2026-09-17 7201e74 9,230 BA view · diff
git:20260814.a9c26d72026-08-14 a9c26d7 9,235 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (9230 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

fal3/claude-skills-collection · 16 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_uah2bqpslqw4kwtv
GET https://markdownregistry.com/api/v1/resolve?ref=fal3/claude-skills-collection/swiftdata-core-data-migrations
GET https://markdownregistry.com/api/v1/blob/e4d0aeab1eb9865e96ddf2c9ae85936b8cfcd7ca13ad392cd7c6fc838e2ff26a