Keychain package

* Added the Keychain package
* Added a Makefile to easily build the package
* Updated the README with additional information

Keychain/Package.resolved

@@ -0,0 +1,15 @@
+{
+  "originHash" : "60d3d428473214be2374da47614464243c913251a95cfad9c1f8331314114aba",
+  "pins" : [
+    {
+      "identity" : "swiftlintplugins",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/SimplyDanny/SwiftLintPlugins",
+      "state" : {
+        "revision" : "8a4640d14777685ba8f14e832373160498fbab92",
+        "version" : "0.63.2"
+      }
+    }
+  ],
+  "version" : 3
+}

Keychain/Package.swift

@@ -0,0 +1,29 @@
+// swift-tools-version: 6.2
+
+import PackageDescription
+
+let package = Package(
+    name: "Keychain",
+    platforms: [
+        .macOS(.v12)
+    ],
+    products: [
+        .library(
+            name: "Keychain",
+            targets: [
+                "Keychain"
+            ]
+        )
+    ],
+    dependencies: [
+        .package(url: "https://github.com/SimplyDanny/SwiftLintPlugins", from: "0.63.2")
+    ],
+    targets: [
+        .target(
+            name: "Keychain",
+            plugins: [
+                .plugin(name: "SwiftLintBuildToolPlugin", package: "SwiftLintPlugins")
+            ]
+        )
+    ]
+)

Keychain/Sources/Keychain/Keychain.swift

@@ -0,0 +1,6 @@
+//
+//  Keychain.swift
+//  Keychain
+//
+//  Created by Bram Kolkman on 20/02/2026.
+//

Makefile

@@ -0,0 +1,13 @@
+.PHONY: build resolve clean
+
+build:
+	@echo "Building Swift package 'Keychain'"
+	@swift build --package-path Keychain --scratch-path .build
+
+resolve:
+	@echo "Resolving Swift package dependencies..."
+	@swift package resolve --package-path Keychain --scratch-path .build
+
+clean:
+	@echo "Cleaning build artifacts..."
+	@rm -rf .build Keychain/.swiftpm

README.md

@@ -1,3 +1,39 @@
 # Keychain
 
-A Swift package for the Keychain
+A Swift package for interacting with the Keychain.
+
+## Requirements
+
+- macOS 12+
+- Swift 6.2+
+
+## Package Structure
+
+```
+Keychain/
+├── Package.swift
+├── Package.resolved
+└── Sources/
+    └── Keychain/
+        └── Keychain.swift
+```
+
+## Dependencies
+
+- [SwiftLintPlugins](https://github.com/SimplyDanny/SwiftLintPlugins) (≥ 0.63.2) — enforces Swift style and conventions at build time.
+
+## Usage
+
+Add the package to your `Package.swift` dependencies and import `Keychain` in your Swift files.
+
+## Makefile
+
+A `Makefile` is provided at the root of the repository to simplify common tasks.
+
+| Command        | Description                              |
+|----------------|------------------------------------------|
+| `make build`   | Builds the Swift package                 |
+| `make resolve` | Resolves package dependencies            |
+| `make clean`   | Removes build artifacts and `.swiftpm`   |
+
+Build artifacts are placed in `.build/` at the repository root (outside the package directory).