Add Open Source Licenses section in Settings

Apache 2.0 license requires attribution for MijickCamera.
Added:
- 'About' section in Settings with 'Open Source Licenses' link
- LicensesView showing all third-party libraries:
  - MijickCamera (Apache 2.0)
  - RevenueCat (MIT)
- Links to GitHub repositories
- License type badges

This fulfills the attribution requirement for Apache 2.0 licensed
libraries used in the app.

SelfieRingLight/Features/Settings/SettingsView.swift

@@ -85,6 +85,12 @@ struct SettingsView: View {
                     
                     iCloudSyncSection
                     
+                    // MARK: - About Section
+                    
+                    SettingsSectionHeader(title: "About", systemImage: "info.circle")
+                    
+                    acknowledgmentsSection
+                    
                     Spacer(minLength: Design.Spacing.xxxLarge)
                 }
                 .padding(.horizontal, Design.Spacing.large)
@@ -323,6 +329,98 @@ struct SettingsView: View {
             ? String(localized: "Synced")
             : viewModel.syncStatus
     }
+    
+    // MARK: - Acknowledgments Section
+    
+    private var acknowledgmentsSection: some View {
+        VStack(alignment: .leading, spacing: Design.Spacing.small) {
+            NavigationLink {
+                LicensesView()
+            } label: {
+                HStack {
+                    VStack(alignment: .leading, spacing: Design.Spacing.xxSmall) {
+                        Text(String(localized: "Open Source Licenses"))
+                            .font(.system(size: Design.BaseFontSize.body, weight: .medium))
+                            .foregroundStyle(.white)
+                        
+                        Text(String(localized: "Third-party libraries used in this app"))
+                            .font(.system(size: Design.BaseFontSize.caption))
+                            .foregroundStyle(.white.opacity(Design.Opacity.medium))
+                    }
+                    
+                    Spacer()
+                    
+                    Image(systemName: "chevron.right")
+                        .font(.system(size: Design.BaseFontSize.caption))
+                        .foregroundStyle(.white.opacity(Design.Opacity.medium))
+                }
+                .padding(Design.Spacing.medium)
+                .background(Color.Surface.primary, in: RoundedRectangle(cornerRadius: Design.CornerRadius.medium))
+            }
+            .buttonStyle(.plain)
+        }
+    }
+}
+
+// MARK: - Licenses View
+
+struct LicensesView: View {
+    var body: some View {
+        ScrollView {
+            VStack(alignment: .leading, spacing: Design.Spacing.large) {
+                // MijickCamera
+                licenseCard(
+                    name: "MijickCamera",
+                    url: "https://github.com/Mijick/Camera",
+                    license: "Apache License 2.0",
+                    description: "Camera made simple. The ultimate camera library that significantly reduces implementation time and effort."
+                )
+                
+                // RevenueCat
+                licenseCard(
+                    name: "RevenueCat",
+                    url: "https://github.com/RevenueCat/purchases-ios",
+                    license: "MIT License",
+                    description: "In-app subscriptions made easy."
+                )
+            }
+            .padding(Design.Spacing.large)
+        }
+        .background(Color.Surface.overlay)
+        .navigationTitle(String(localized: "Open Source Licenses"))
+        .navigationBarTitleDisplayMode(.inline)
+    }
+    
+    private func licenseCard(name: String, url: String, license: String, description: String) -> some View {
+        VStack(alignment: .leading, spacing: Design.Spacing.small) {
+            Text(name)
+                .font(.system(size: Design.BaseFontSize.medium, weight: .bold))
+                .foregroundStyle(.white)
+            
+            Text(description)
+                .font(.system(size: Design.BaseFontSize.caption))
+                .foregroundStyle(.white.opacity(Design.Opacity.strong))
+            
+            HStack {
+                Label(license, systemImage: "doc.text")
+                    .font(.system(size: Design.BaseFontSize.xSmall))
+                    .foregroundStyle(Color.Accent.primary)
+                
+                Spacer()
+                
+                if let linkURL = URL(string: url) {
+                    Link(destination: linkURL) {
+                        Label(String(localized: "View on GitHub"), systemImage: "arrow.up.right.square")
+                            .font(.system(size: Design.BaseFontSize.xSmall))
+                            .foregroundStyle(Color.Accent.primary)
+                    }
+                }
+            }
+            .padding(.top, Design.Spacing.xSmall)
+        }
+        .padding(Design.Spacing.medium)
+        .background(Color.Surface.primary, in: RoundedRectangle(cornerRadius: Design.CornerRadius.medium))
+    }
 }
 
 // MARK: - Color Preset Button