feat(skills): add Core AI skill + Liquid Glass/AppKit updates

[duyet]

Researches the provided Apple docs pages and turns them into skills for build-ios-apps / build-macos-apps.

Sources → skills

Core AI (new skill) — build-ios-apps/skills/core-ai/SKILL.md

• From: Integrating on-device AI models in your app with Core AI + Compiling Core AI models ahead of time.
• Covers the full API: import CoreAI, AIModel(contentsOf:) (async device specialization), loadFunction(named:), function.descriptor/inputDescriptor(of:), NDArray(shape:scalarType:), mutable vs read-only views, function.run(inputs:), outputs by name, and the coreai-build AOT CLI (.aimodel → per-arch .aimodelc, AIModel.deviceArchitectureName).

Liquid Glass (updates) — from Adopting Liquid Glass

• build-ios-apps/skills/swiftui-liquid-glass/SKILL.md: new Adoption Guidance section (standard components adopt it automatically, remove custom backgrounds, test accessibility settings, use sparingly, layered app icons, tabBarMinimizeBehavior/Tab(role: .search)).
• build-macos-apps/skills/liquid-glass/SKILL.md: app-icon + accessibility notes.

AppKit (reference) — from the AppKit overview

• build-macos-apps/skills/appkit-interop/references/appkit-overview.md: topic map (windows, text system, documents, drawing, menus, D&D, bindings, Catalyst) and notable symbols, linked from the skill.

Notes

• Content extracted via Apple's DocC JSON API and synthesized (API names + short representative code), not copied verbatim.
• Lint-clean: prettier-formatted, no markdown lines >400 chars.
• The separate Foundation Models framework (Apple's high-level on-device LLM API) is not in the provided sources; the Core AI skill cross-references it. Happy to add a dedicated foundation-models skill if you share that doc URL.

Co-Authored-By: duyetbot duyetbot@users.noreply.github.com

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

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📥 Commits

Reviewing files that changed from the base of the PR and between 0395c17 and 966904b.

📒 Files selected for processing (5)

• build-ios-apps/skills/core-ai/SKILL.md
• build-ios-apps/skills/swiftui-liquid-glass/SKILL.md
• build-macos-apps/skills/appkit-interop/SKILL.md
• build-macos-apps/skills/appkit-interop/references/appkit-overview.md
• build-macos-apps/skills/liquid-glass/SKILL.md

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• Create PR with unit tests
• Commit unit tests in branch feat/core-ai-skill

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