Reworded the README documentation in the Infrastructure package target.
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# Infrastructure
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The shared [Hummingbird](https://github.com/hummingbird-project/hummingbird) toolkit the **Loud** services build on: declarative routing, hardened HTTP middlewares, pre-rendered localized HTML responses, and the page and asset scaffolding.
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The shared [Hummingbird](https://github.com/hummingbird-project/hummingbird) toolkit the **Loud** services build on: declarative routing, hardened HTTP middlewares, pre-rendered localized responses, and page and asset scaffolding.
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## Overview
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| Role | Types |
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| Constants | The `HTTPField.Name` header names, `Int.RateLimit` limits, and `String.Security` header values the middlewares default to |
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## Design rules
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The package holds only what every service can reuse; anything a service owns is injected, never referenced:
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- **No site-specific content.** No page markup, no asset catalog, no `Bundle.module` lookups. A type that needs a service's content takes it as a parameter: the `bundle:` whose String Catalog names the supported languages, the `document:` closure building a page for a locale, and a `Page` conformer's `metadata` plus its optional head concerns (`summary`, `canonicalURL`, `socialCard`, `structuredData`, `analytics`). URLs arrive fully formed and absolute; composing them stays with the page.
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- **Types own their format; `Page` renders generically.** Each head concern derives its own render-ready representation — `SocialCard.tags`, `StructuredData.payload`, `Analytics.attributes` — and `Page` applies it without knowing the vocabulary. Page ``scripts`` and the tracker render as `defer`red head tags, with a `preconnect` hint for the tracker's cross-origin host.
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- **Services fill the gaps once, via extensions.** A service restores its convenient call sites with retroactive extensions — the Website's `*+Defaults` extensions are the pattern. The open schema.org vocabularies extend the same way: the package declares the shared `Property.Name` and `Node.Kind` constants, and a service adds its own.
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- **Method structs.** Single-operation types such as `FingerprintAssets` hold their lifetime-fixed configuration in `init` and take only per-call inputs in `callAsFunction`.
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The package holds only what every service can reuse. Anything a service owns is injected, never referenced.
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- **No site-specific content.** No page markup, no asset catalog, no `Bundle.module` lookups. What a type needs, it takes as a parameter: the `bundle:` whose String Catalog names the supported languages, the `document:` closure that builds a page for a locale, a `Page` conformer's `metadata` and its optional head concerns (`summary`, `canonicalURL`, `socialCard`, `structuredData`, `analytics`). URLs arrive absolute and fully formed — composing them stays with the page.
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- **Types own their format; `Page` renders generically.** Each head concern derives its own render-ready form — `SocialCard.tags`, `StructuredData.payload`, `Analytics.attributes` — which `Page` applies without knowing the vocabulary. A page's `scripts` and the tracker render as `defer`red head tags, the tracker preceded by a `preconnect` to its cross-origin host.
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- **Services fill the gaps once, via extensions.** A service restores its convenient call sites retroactively — the Website's `*+Defaults` are the pattern. The open schema.org vocabularies work the same way: the package declares the shared `Property.Name` and `Node.Kind` constants, a service adds its own.
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- **Method structs.** Single-operation types such as `FingerprintAssets` take lifetime-fixed configuration in `init` and per-call inputs in `callAsFunction`.
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## Layout
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Sources are split by visibility, then by kind, one type per file:
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│ ├── Middlewares/ the seven HTTP middlewares
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│ ├── Protocols/ Asset, LocalizedRequestContext, Page, RouterController
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│ ├── Responses/ CachedHTMLResponse, LocalizedHTMLCollectionResponse
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│ └── Types/ Analytics, SocialCard, StructuredData (the latter two nesting their own types in SocialCard/ and StructuredData/)
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│ └── Types/ Analytics, SocialCard, StructuredData — each nesting its own types in a folder of that name
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└── Internal/
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├── Extensions/ implementation details (the String separators)
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└── Types/ implementation details (FNV1aHash)
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```
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## Testing
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Every suite carries a tag for the kind of API it exercises — `.asset`, `.extension`, `.middleware`, `.protocol`, or `.type`, declared in `Tests/Utils/Extensions/Tag+Constants.swift` — so test plans and summaries can slice a run by kind. A new suite adopts the tag matching its subject, or adds one when none fits.
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Every suite carries a tag for the kind of API it exercises — `.asset`, `.extension`, `.middleware`, `.protocol`, `.type` — declared in `Tests/Utils/Extensions/Tag+Constants.swift`, so a run can be sliced by kind. A new suite takes the tag matching its subject, or adds one when none fits.
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## Requirements
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- Swift 6.3 toolchain (`swift-tools-version:6.3`).
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- macOS 15, matching the sibling packages (the services deploy to Linux containers; the packages carry no UI platforms).
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- macOS 15, matching the sibling packages. The services deploy to Linux containers; the packages declare no UI platforms.
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