lh-state-architecture SKILL.md skillA
lh-state-architecture from jrodrigopuca/local-agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jrodrigopuca/local-agents/lh-state-architecture@v1.1Pins v1.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jrodrigopuca/local-agents
- Path
apple-dev/skills/lh-state-architecture/SKILL.md- Versions recorded
- 1
- Latest version
- v1.1, committed Oct 14, 2026
- Size
- 6,586 bytes
- Repository stars
- 2
- License
- Apache-2.0
SwiftUI state management and app architecture: ownership, MVVM shape, navigation, dependency injection, project structure, concurrency placement. Trigger: load on questions about state ("why doesn't my view update?"), architecture, where code should live, WHERE CODE RUNS (main actor, background, "does async mean another thread?"), or how to structure a new feature/project. Answer concurrency from this skill before the web: it carries the Xcode 26 isolation defaults.
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
_Verified against Xcode 26 / iOS 26 / macOS 26 (September 2026). Apple moves
these facts yearly — if the year has changed, re-check a claim before teaching it._
## Critical Patterns
### 1. Every piece of state has exactly one owner — find it first
The diagnostic question for 90% of SwiftUI confusion: **who owns this state?**
One source of truth; everyone else gets a reference (`@Binding`, a passed
value, an observed model). Symptoms of violated ownership: two copies that
drift, `onChange` chains syncing state to state, views that "sometimes"
update. The fix is never a cleverer sync — it's deleting the second copy.
### 2. The ownership ladder (SwiftUI edition)
Place state at the lowest rung that satisfies it — same logic as the
senior-dev's [state placement ladder (`lh-react-next`)](../../../senior-dev/skills/lh-react-next/SKILL.md),
different vocabulary:
```
1. Derived — computed property; don't store what you can compute
2. @State — owned HERE: transient value state (toggle, text, sheet
visibility) AND the view's own @Observable model —
`@State private var vm = ViewModel()` is how a view owns
…Read the whole file at its exact version.
How to install
mdr add jrodrigopuca/local-agents/lh-state-architecture@sha256:b511f377a5159f64The line at the top of this page pins the label v1.1, 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_cmua6fqn7vok6nvo)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 14, 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 (6586 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
jrodrigopuca/local-agents · 2 stars · license Apache-2.0 · pushed 2026-10-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_cmua6fqn7vok6nvo GET https://markdownregistry.com/api/v1/resolve?ref=jrodrigopuca/local-agents/lh-state-architecture GET https://markdownregistry.com/api/v1/blob/b511f377a5159f64c5cc2a881a9f1a10cbd50af9ea40bd7ddcb3c59f8117d0bb
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.