Legacy to VIP+W Migration SKILL.md skillA
Legacy to VIP+W Migration from jordancoin/ios-skills-collection is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jordancoin/ios-skills-collection/Legacy to VIP+W Migration@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jordancoin/ios-skills-collection
- Path
skills/arimunandar--legacy-migration/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Mar 29, 2026
- Size
- 18,651 bytes
- Repository stars
- 6
- License
- a license file GitHub does not identify
Step-by-step guide for refactoring legacy/spaghetti iOS code to VIP+W Clean Architecture.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Legacy to VIP+W Migration Guide
A systematic approach to refactoring legacy iOS codebases (MVC, Massive ViewController, spaghetti code) to VIP+W Clean Architecture.
## Migration Philosophy
### Golden Rules
1. **Never rewrite from scratch** - Incremental migration preserves working code
2. **One screen at a time** - Migrate scene by scene, not all at once
3. **Tests first** - Write tests for existing behavior before refactoring
4. **Keep it working** - App should work after each migration step
5. **Strangler pattern** - New code in VIP+W, gradually replace old code
### Migration Priority
Start with screens that are:
1. **Frequently changed** - High ROI for clean architecture
2. **Bug-prone** - Messy code causes bugs
3. **Well-understood** - You know the expected behavior
4. **Isolated** - Fewer dependencies on other screens
## Phase 1: Analysis
### Step 1.1: Identify the Mess
Common legacy patterns to identify:
```swift
// 🍝 SPAGHETTI: Everything in ViewController
class ProductViewController: UIViewController {
// UI + Business Logic + Networking + Navigation ALL HERE
func loadProduct() {
// Direct API call in ViewController
…Read the whole file at its exact version.
How to install
mdr add jordancoin/ios-skills-collection/Legacy to VIP+W Migration@sha256:92cf3d8c45492a4aThe line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_wr2l6pbkz6a37q5k)
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Versions
The registry has recorded 1 version of this file, committed on Mar 29, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (18651 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
jordancoin/ios-skills-collection · 6 stars · license a license file GitHub does not identify · pushed 2026-09-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_wr2l6pbkz6a37q5k GET https://markdownregistry.com/api/v1/resolve?ref=jordancoin/ios-skills-collection/Legacy to VIP+W Migration GET https://markdownregistry.com/api/v1/blob/92cf3d8c45492a4a8c6a04b1f4be2ce7bd50107b6fa6799148ae6889e64c4d71
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.