feat: add native About panel

CHANGELOG.md

@@ -8,6 +8,10 @@ All notable changes to InferenceMeter are documented here. The project follows [
 
 Codex compatibility release following the upstream removal of its five-hour usage window.
 
+### Added
+
+- Add a native macOS About panel with Monomyth Development, project, and license details.
+
 ### Fixed
 
 - Prefer Codex's live CLI rate-limit snapshot and ignore expired legacy windows left in rollout files after an upstream quota change.

InferenceMeter/UI/DetailPopover.swift

@@ -46,6 +46,50 @@ func relativeUpdatedString(from updatedAt: Date, now: Date) -> String {
     }
 }
 
+struct AboutPanelDetails: Equatable {
+    let organizationName: String
+    let websiteURL: URL
+    let repositoryURL: URL
+    let licenseURL: URL
+
+    static let inferenceMeter = AboutPanelDetails(
+        organizationName: "Monomyth Development",
+        websiteURL: URL(string: "https://monomyth.dev")!,
+        repositoryURL: URL(string: "https://github.com/MonomythDevelopment/inference-meter")!,
+        licenseURL: URL(string: "https://github.com/MonomythDevelopment/inference-meter/blob/main/LICENSE")!
+    )
+}
+
+func makeAboutPanelCredits(details: AboutPanelDetails) -> NSAttributedString {
+    let credits = NSMutableAttributedString(
+        string: "Built by \(details.organizationName)\n"
+    )
+    credits.append(aboutPanelLink(title: "monomyth.dev", url: details.websiteURL))
+    credits.append(NSAttributedString(string: "\n"))
+    credits.append(aboutPanelLink(title: "Source code on GitHub", url: details.repositoryURL))
+    credits.append(NSAttributedString(string: "\n"))
+    credits.append(aboutPanelLink(title: "Released under the MIT License", url: details.licenseURL))
+    return credits
+}
+
+@MainActor
+func presentInferenceMeterAboutPanel() {
+    let details = AboutPanelDetails.inferenceMeter
+    NSApplication.shared.orderFrontStandardAboutPanel(
+        options: [
+            .credits: makeAboutPanelCredits(details: details)
+        ]
+    )
+    NSApplication.shared.activate(ignoringOtherApps: true)
+}
+
+private func aboutPanelLink(title: String, url: URL) -> NSAttributedString {
+    NSAttributedString(
+        string: title,
+        attributes: [.link: url]
+    )
+}
+
 struct DetailPopover: View {
     @Environment(AppState.self) private var appState
     @AppStorage("compactLabel") private var isCompactLabel = false
@@ -117,6 +161,10 @@ struct DetailPopover: View {
 
             launchAtLoginMessage
 
+            Divider()
+
+            Button("About Inference Meter", action: presentInferenceMeterAboutPanel)
+
             Button("Quit Inference Meter", role: .destructive, action: handleQuit)
                 .keyboardShortcut("q")
         }

InferenceMeterTests/AboutPanelTests.swift

@@ -0,0 +1,41 @@
+import Foundation
+import Testing
+@testable import InferenceMeter
+
+@Test("About panel identifies Monomyth Development and public project details")
+func aboutPanelIdentifiesMonomythDevelopmentAndProjectDetails() {
+    let details = AboutPanelDetails.inferenceMeter
+
+    #expect(details.organizationName == "Monomyth Development")
+    #expect(details.websiteURL.absoluteString == "https://monomyth.dev")
+    #expect(details.repositoryURL.absoluteString == "https://github.com/MonomythDevelopment/inference-meter")
+    #expect(details.licenseURL.absoluteString.hasSuffix("/blob/main/LICENSE"))
+}
+
+@Test("About panel credits expose working website, repository, and license links")
+func aboutPanelCreditsExposeExpectedLinks() {
+    let details = AboutPanelDetails.inferenceMeter
+    let credits = makeAboutPanelCredits(details: details)
+
+    #expect(
+        credits.string == """
+        Built by Monomyth Development
+        monomyth.dev
+        Source code on GitHub
+        Released under the MIT License
+        """
+    )
+    #expect(link(in: credits, for: "monomyth.dev") == details.websiteURL)
+    #expect(link(in: credits, for: "Source code on GitHub") == details.repositoryURL)
+    #expect(link(in: credits, for: "Released under the MIT License") == details.licenseURL)
+}
+
+private func link(in attributedString: NSAttributedString, for text: String) -> URL? {
+    let range = (attributedString.string as NSString).range(of: text)
+
+    guard range.location != NSNotFound else {
+        return nil
+    }
+
+    return attributedString.attribute(.link, at: range.location, effectiveRange: nil) as? URL
+}

project.yml

@@ -29,6 +29,7 @@ targets:
         PRODUCT_BUNDLE_IDENTIFIER: dev.monomyth.InferenceMeter
         GENERATE_INFOPLIST_FILE: YES
         INFOPLIST_KEY_LSUIElement: YES
+        INFOPLIST_KEY_NSHumanReadableCopyright: "Copyright © 2026 Monomyth Development"
         ENABLE_APP_SANDBOX: NO
         ENABLE_HARDENED_RUNTIME: NO