feat(intents): add App Intents + Siri integration

Expose Marks to Siri, Spotlight, and Shortcuts via App Intents:

- BookmarkEntity (AppEntity + IndexedEntity, keyed on the Linkding
  server id) with a server-backed EntityStringQuery for live lookup
- Intents: Add, Open (OpenIntent), Search, ShowUnread, and an AI
  Summarize intent backed by ClaudeService; AppShortcutsProvider with
  spoken phrases; Siri snippet views and dialog
- SearchMarksIntent conforms to the system.search App Schema
  (@AppIntent(schema:), ShowInAppSearchResultsIntent) so it is
  executable by conversational Siri / Apple Intelligence
- IntentRouter bridges intents (run in the app process) to the SwiftUI
  scene for open/search navigation; widgets refreshed after adds
- Link AppIntents.framework so the metadata processor extracts shortcut
  phrases and validates the assistant schema

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Marks.xcodeproj/project.pbxproj

@@ -21,6 +21,7 @@
 		76223AA04DF97B24C1490B20 /* ShareViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = ADEAC824576633CC77370262 /* ShareViewController.swift */; };
 		8140EEEFBB7A3510A73D1A93 /* SwiftUI.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 093402014727A338745A06DA /* SwiftUI.framework */; };
 		849C9CB4E1E8A6ABA1BC7251 /* SettingsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5C29CB878BC334639E6194E2 /* SettingsView.swift */; };
+		852A3E18661C190622FF5A85 /* AppIntents.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = F9803BA80BEAE9A3AE4AF5E7 /* AppIntents.framework */; };
 		8BD3FA025C082654D55374A2 /* MarksAuth.swift in Sources */ = {isa = PBXBuildFile; fileRef = F78AA3450BDFAC24591EE407 /* MarksAuth.swift */; };
 		8BDB7DAA6A2711B9499F5582 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 57D20912C19182A45914069B /* Assets.xcassets */; };
 		905FBD9468F488ACE4B81726 /* RecentPodcastsWidget.swift in Sources */ = {isa = PBXBuildFile; fileRef = 47CB3AAED5B64809B06A9650 /* RecentPodcastsWidget.swift */; };
@@ -39,9 +40,13 @@
 		C3189071834E0F8898408C37 /* EditBookmarkView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D3A4B1E764CC88A774AF8EA5 /* EditBookmarkView.swift */; };
 		CD3013ED0FD018091D18F9FE /* BookmarkListRow.swift in Sources */ = {isa = PBXBuildFile; fileRef = CC6B10FBB227F426A2B597C8 /* BookmarkListRow.swift */; };
 		DA914D93102B9F872DDC2032 /* MarksWidgetBundle.swift in Sources */ = {isa = PBXBuildFile; fileRef = DE73381C52297CDB30AACCFB /* MarksWidgetBundle.swift */; };
+		DE32F3DC24D606926A559C06 /* IntentSnippetViews.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9D8E2E470C9336209B7E8543 /* IntentSnippetViews.swift */; };
 		E056C1B84C267D7554F4D115 /* WidgetDataStore.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0EDC639E0783581A733F4C99 /* WidgetDataStore.swift */; };
+		E10B0B4EC9580342830EC0D2 /* MarksAppIntents.swift in Sources */ = {isa = PBXBuildFile; fileRef = 64E9DEC5CD89FF346E23A14F /* MarksAppIntents.swift */; };
 		E5A8DE01BEB3BC7DBB7FB720 /* WidgetDataStore.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0EDC639E0783581A733F4C99 /* WidgetDataStore.swift */; };
 		EE540B8367519EDE679C1B70 /* SearchView.swift in Sources */ = {isa = PBXBuildFile; fileRef = BCC3BB2525F0F63445D419B9 /* SearchView.swift */; };
+		EFF8E4CD63CAE1342CE3A4F0 /* IntentSupport.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6ACABF0CA940312B4195456 /* IntentSupport.swift */; };
+		FBAE1329DD9C3152FBB53AD4 /* BookmarkEntity.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8D650D0784B847BFEDCB3141 /* BookmarkEntity.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -93,13 +98,16 @@
 		5C29CB878BC334639E6194E2 /* SettingsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SettingsView.swift; sourceTree = "<group>"; };
 		5CCBB391B1E0E1E4EBE0EFC7 /* LinkdingAPI.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LinkdingAPI.swift; sourceTree = "<group>"; };
 		629C41E0BC28EB6359D50CFD /* BrowserView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BrowserView.swift; sourceTree = "<group>"; };
+		64E9DEC5CD89FF346E23A14F /* MarksAppIntents.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MarksAppIntents.swift; sourceTree = "<group>"; };
 		69D868AF1DAF3F1BBEACBFF6 /* ClaudeService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ClaudeService.swift; sourceTree = "<group>"; };
 		759BA3FCF8BEE1D4EA1CDC17 /* String+Helpers.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "String+Helpers.swift"; sourceTree = "<group>"; };
 		86B2DE40098D2B39FFE1AC36 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
 		8CA428181B35885F7D9F4D55 /* Bookmark.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Bookmark.swift; sourceTree = "<group>"; };
+		8D650D0784B847BFEDCB3141 /* BookmarkEntity.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BookmarkEntity.swift; sourceTree = "<group>"; };
 		938672D3D6ADC73B354B5EA5 /* ShareExtension.appex */ = {isa = PBXFileReference; includeInIndex = 0; lastKnownFileType = "wrapper.app-extension"; path = ShareExtension.appex; sourceTree = BUILT_PRODUCTS_DIR; };
 		969B364D1E9E6D2E1C610D21 /* MarksWidget.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = MarksWidget.entitlements; sourceTree = "<group>"; };
 		96F73C2A0B8AB36C6F80D5FE /* RandomBookmarkWidget.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RandomBookmarkWidget.swift; sourceTree = "<group>"; };
+		9D8E2E470C9336209B7E8543 /* IntentSnippetViews.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = IntentSnippetViews.swift; sourceTree = "<group>"; };
 		A4EB8C63735A267B81030CB5 /* PodcastPlayerView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PodcastPlayerView.swift; sourceTree = "<group>"; };
 		AB2D194AD325ECE80A04979E /* AddBookmarkView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AddBookmarkView.swift; sourceTree = "<group>"; };
 		AB6C53AB14A38FCD4CC7628D /* Marks.app */ = {isa = PBXFileReference; includeInIndex = 0; lastKnownFileType = wrapper.application; path = Marks.app; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -111,11 +119,13 @@
 		CBFB5EFC9764B22A2622EA4A /* BookmarksViewModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BookmarksViewModel.swift; sourceTree = "<group>"; };
 		CC6B10FBB227F426A2B597C8 /* BookmarkListRow.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BookmarkListRow.swift; sourceTree = "<group>"; };
 		D3A4B1E764CC88A774AF8EA5 /* EditBookmarkView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EditBookmarkView.swift; sourceTree = "<group>"; };
+		D6ACABF0CA940312B4195456 /* IntentSupport.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = IntentSupport.swift; sourceTree = "<group>"; };
 		D92575C7C710347F226EC74A /* MarksApp.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MarksApp.swift; sourceTree = "<group>"; };
 		DE73381C52297CDB30AACCFB /* MarksWidgetBundle.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MarksWidgetBundle.swift; sourceTree = "<group>"; };
 		E895C34E4D2A1C4709B25FF1 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
 		F75DE8BE4B3A3E0E60B8BB03 /* PodcastIndex.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PodcastIndex.swift; sourceTree = "<group>"; };
 		F78AA3450BDFAC24591EE407 /* MarksAuth.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MarksAuth.swift; sourceTree = "<group>"; };
+		F9803BA80BEAE9A3AE4AF5E7 /* AppIntents.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = AppIntents.framework; path = System/Library/Frameworks/AppIntents.framework; sourceTree = SDKROOT; };
 		FE19F7619214271A8C12EEEB /* CollectionsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CollectionsView.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -125,6 +135,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				A396A5DC6ED590D0CDB1024B /* WidgetKit.framework in Frameworks */,
+				852A3E18661C190622FF5A85 /* AppIntents.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -147,6 +158,7 @@
 				86B2DE40098D2B39FFE1AC36 /* Info.plist */,
 				0D2CC53B01DF0FE51ADE5FCB /* Marks.entitlements */,
 				D92575C7C710347F226EC74A /* MarksApp.swift */,
+				58E8E316BE3F10C5149AADC3 /* Intents */,
 				3EF3094F53F0378D1BF18508 /* Models */,
 				7ABBFDF43A1EB773E0A49CFE /* Services */,
 				AF9CABF75E77168EF1D60F29 /* Views */,
@@ -164,6 +176,17 @@
 			path = Models;
 			sourceTree = "<group>";
 		};
+		58E8E316BE3F10C5149AADC3 /* Intents */ = {
+			isa = PBXGroup;
+			children = (
+				8D650D0784B847BFEDCB3141 /* BookmarkEntity.swift */,
+				9D8E2E470C9336209B7E8543 /* IntentSnippetViews.swift */,
+				D6ACABF0CA940312B4195456 /* IntentSupport.swift */,
+				64E9DEC5CD89FF346E23A14F /* MarksAppIntents.swift */,
+			);
+			path = Intents;
+			sourceTree = "<group>";
+		};
 		7A85D09B4E109E1D9CD8F5BB /* ShareExtension */ = {
 			isa = PBXGroup;
 			children = (
@@ -244,6 +267,7 @@
 		F5B3C85424137FA0CE2467B1 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				F9803BA80BEAE9A3AE4AF5E7 /* AppIntents.framework */,
 				093402014727A338745A06DA /* SwiftUI.framework */,
 				0552C13335034219DECF4F62 /* WidgetKit.framework */,
 			);
@@ -393,6 +417,7 @@
 				AE2EA9C6B9016C9986ADC8EE /* AddBookmarkView.swift in Sources */,
 				B5EC36EF81525C8FCD2D6C0A /* AnalyticsService.swift in Sources */,
 				457FCE503CCA82C5F27C6C90 /* Bookmark.swift in Sources */,
+				FBAE1329DD9C3152FBB53AD4 /* BookmarkEntity.swift in Sources */,
 				CD3013ED0FD018091D18F9FE /* BookmarkListRow.swift in Sources */,
 				96698499C0501D0A897D7E08 /* BookmarkRow.swift in Sources */,
 				A8B8D58C5B68F54DC20126C1 /* BookmarksView.swift in Sources */,
@@ -401,8 +426,11 @@
 				BD2EAD8200FB69B95972146F /* ClaudeService.swift in Sources */,
 				6BF0E1F0F4DEAF87B0B8DCF6 /* CollectionsView.swift in Sources */,
 				C3189071834E0F8898408C37 /* EditBookmarkView.swift in Sources */,
+				DE32F3DC24D606926A559C06 /* IntentSnippetViews.swift in Sources */,
+				EFF8E4CD63CAE1342CE3A4F0 /* IntentSupport.swift in Sources */,
 				15077853ECD40C9B289FB608 /* LinkdingAPI.swift in Sources */,
 				41F00F4E7FFC1C0ACF71E398 /* MarksApp.swift in Sources */,
+				E10B0B4EC9580342830EC0D2 /* MarksAppIntents.swift in Sources */,
 				8BD3FA025C082654D55374A2 /* MarksAuth.swift in Sources */,
 				14E1B3CE58D36BFF1A2199C1 /* OnboardingView.swift in Sources */,
 				0479C0AA16E3AFDBD4414AD0 /* PodcastIndex.swift in Sources */,

Marks.xcodeproj/xcshareddata/xcschemes/ShareExtension.xcscheme

@@ -1,10 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
    LastUpgradeVersion = "1630"
-   version = "1.3">
+   version = "1.7">
    <BuildAction
       parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
+      buildImplicitDependencies = "YES"
+      runPostActionsOnFailure = "NO">
       <BuildActionEntries>
          <BuildActionEntry
             buildForTesting = "YES"
@@ -40,7 +41,8 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES">
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      onlyGenerateCoverageForSpecifiedTargets = "NO">
       <MacroExpansion>
          <BuildableReference
             BuildableIdentifier = "primary"
@@ -65,15 +67,6 @@
       allowLocationSimulation = "YES">
       <BuildableProductRunnable
          runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "CF31B2655F8F30CF6DF3C26F"
-            BuildableName = "ShareExtension.appex"
-            BlueprintName = "ShareExtension"
-            ReferencedContainer = "container:Marks.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-      <MacroExpansion>
          <BuildableReference
             BuildableIdentifier = "primary"
             BlueprintIdentifier = "76C272776D8EBCCD3FB6715A"
@@ -81,7 +74,9 @@
             BlueprintName = "Marks"
             ReferencedContainer = "container:Marks.xcodeproj">
          </BuildableReference>
-      </MacroExpansion>
+      </BuildableProductRunnable>
+      <CommandLineArguments>
+      </CommandLineArguments>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"

Marks/Intents/BookmarkEntity.swift

@@ -0,0 +1,122 @@
+import Foundation
+import AppIntents
+import CoreSpotlight
+
+/// A Linkding bookmark exposed to Siri, Spotlight, Shortcuts, and the
+/// Apple-Intelligence "Use Model" action.
+///
+/// Conforms to `IndexedEntity` so its title / description / tags become
+/// Spotlight-searchable, which is what lets Siri answer "find my bookmark
+/// about Swift concurrency". The identifier is the Linkding server id (`Int`),
+/// which is stable across devices.
+struct BookmarkEntity: AppEntity, IndexedEntity {
+    static let typeDisplayRepresentation = TypeDisplayRepresentation(name: "Bookmark")
+
+    let id: Int
+
+    @Property(title: "Title")
+    var title: String
+
+    @Property(title: "URL")
+    var url: URL
+
+    @Property(title: "Website")
+    var host: String
+
+    @Property(title: "Description")
+    var details: String
+
+    @Property(title: "Tags")
+    var tags: [String]
+
+    @Property(title: "Unread")
+    var unread: Bool
+
+    /// AI-generated summary (when one has been produced). Exposed so the
+    /// Shortcuts "Use Model" action and Siri can reason over it.
+    @Property(title: "Summary")
+    var summary: String?
+
+    static let defaultQuery = BookmarkQuery()
+
+    var displayRepresentation: DisplayRepresentation {
+        DisplayRepresentation(
+            title: "\(title)",
+            subtitle: "\(host)",
+            image: .init(systemName: "bookmark.fill")
+        )
+    }
+
+    /// Rich Spotlight attributes so semantic search has real content to match.
+    var attributeSet: CSSearchableItemAttributeSet {
+        let attrs = CSSearchableItemAttributeSet(contentType: .url)
+        attrs.title = title
+        attrs.contentDescription = details.isEmpty ? summary : details
+        attrs.keywords = tags
+        attrs.url = url
+        return attrs
+    }
+}
+
+extension BookmarkEntity {
+    init(from b: Bookmark) {
+        self.id = b.id
+        self.title = b.displayTitle
+        self.url = URL(string: b.url) ?? URL(string: "https://example.invalid")!
+        self.host = b.domain
+        self.details = b.contentExcerpt ?? ""
+        self.tags = b.tagNames
+        self.unread = b.unread
+        self.summary = b.aiSummary
+    }
+
+    /// Reconstruct a minimal `Bookmark` from the entity — enough for the
+    /// AI enrichment call, which only reads url/title/tags.
+    func makeBookmark() -> Bookmark {
+        Bookmark(
+            id: id,
+            url: url.absoluteString,
+            title: title,
+            description: details,
+            tagNames: tags,
+            dateAdded: Date(),
+            dateModified: Date(),
+            isArchived: false,
+            unread: unread,
+            shared: false,
+            websiteTitle: nil,
+            websiteDescription: nil,
+            faviconUrl: nil,
+            previewImageUrl: nil,
+            aiSummary: summary,
+            aiTags: nil
+        )
+    }
+}
+
+/// Looks bookmarks up by id and resolves free-text queries by hitting the
+/// Linkding server live — the recommended path for data that lives on a
+/// server and changes too often to pre-index.
+struct BookmarkQuery: EntityStringQuery {
+    func entities(for identifiers: [Int]) async throws -> [BookmarkEntity] {
+        let api = try MarksIntent.api()
+        // Linkding has no batch-by-id endpoint; pull a page and filter.
+        let response = try await api.fetchBookmarks(limit: 200)
+        let wanted = Set(identifiers)
+        return response.results
+            .filter { wanted.contains($0.id) }
+            .map(BookmarkEntity.init(from:))
+    }
+
+    func entities(matching string: String) async throws -> [BookmarkEntity] {
+        let api = try MarksIntent.api()
+        let response = try await api.fetchBookmarks(search: string, limit: 25)
+        return response.results.map(BookmarkEntity.init(from:))
+    }
+
+    func suggestedEntities() async throws -> [BookmarkEntity] {
+        let api = try MarksIntent.api()
+        let response = try await api.fetchBookmarks(limit: 10)
+        return response.results.map(BookmarkEntity.init(from:))
+    }
+}

Marks/Intents/IntentSnippetViews.swift

@@ -0,0 +1,53 @@
+import SwiftUI
+
+/// Compact card Siri shows after saving / opening a bookmark.
+struct BookmarkSnippetView: View {
+    let entity: BookmarkEntity
+
+    var body: some View {
+        HStack(spacing: 12) {
+            Image(systemName: "bookmark.fill")
+                .font(.title2)
+                .foregroundStyle(.tint)
+            VStack(alignment: .leading, spacing: 3) {
+                Text(entity.title)
+                    .font(.headline)
+                    .lineLimit(2)
+                Text(entity.host)
+                    .font(.subheadline)
+                    .foregroundStyle(.secondary)
+                if !entity.tags.isEmpty {
+                    Text(entity.tags.map { "#\($0)" }.joined(separator: " "))
+                        .font(.caption)
+                        .foregroundStyle(.secondary)
+                        .lineLimit(1)
+                }
+            }
+            Spacer(minLength: 0)
+        }
+        .padding()
+    }
+}
+
+/// Card Siri shows for an AI summary result.
+struct SummarySnippetView: View {
+    let title: String
+    let host: String
+    let summary: String
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 8) {
+            HStack(spacing: 8) {
+                Image(systemName: "sparkles").foregroundStyle(.tint)
+                Text(title).font(.headline).lineLimit(2)
+            }
+            Text(host)
+                .font(.caption)
+                .foregroundStyle(.secondary)
+            Text(summary)
+                .font(.body)
+                .fixedSize(horizontal: false, vertical: true)
+        }
+        .padding()
+    }
+}

Marks/Intents/IntentSupport.swift

@@ -0,0 +1,66 @@
+import Foundation
+import AppIntents
+
+/// Which top-level tab the app is showing. Used so an intent can switch tabs.
+enum AppTab: Hashable {
+    case bookmarks, tags, search
+}
+
+/// Bridges App Intents (which run in the main app process, since there is no
+/// separate AppIntents extension target) to the live SwiftUI scene.
+///
+/// Intents mutate this shared, observable singleton; `MainContainer` and
+/// `SearchView` observe it and react (present a browser, switch to the search
+/// tab, etc.). This is the standard "intent → in-app navigation" pattern when
+/// perform() runs in-process.
+@MainActor
+@Observable
+final class IntentRouter {
+    static let shared = IntentRouter()
+    private init() {}
+
+    /// A bookmark URL an intent asked to open in the in-app browser.
+    var openBookmarkURL: String?
+
+    /// A query an intent asked the app to search for.
+    var searchRequest: String?
+
+    func openBookmark(url: String) { openBookmarkURL = url }
+    func search(_ query: String) { searchRequest = query }
+}
+
+/// Errors surfaced to Siri / Shortcuts when an intent can't run.
+enum MarksIntentError: Error, CustomLocalizedStringResourceConvertible {
+    case notConfigured
+    case invalidURL
+
+    var localizedStringResource: LocalizedStringResource {
+        switch self {
+        case .notConfigured: "Open Marks and connect to your Linkding server first."
+        case .invalidURL: "That doesn't look like a valid link."
+        }
+    }
+}
+
+/// Shared plumbing for the intents: build an API client from saved config and
+/// keep the widgets in sync after mutations.
+enum MarksIntent {
+    /// Builds a `LinkdingAPI` from the saved server config, or throws a
+    /// user-facing error if the app has never been connected.
+    static func api() throws -> LinkdingAPI {
+        guard let config = ServerConfig.load() else { throw MarksIntentError.notConfigured }
+        return LinkdingAPI(config: config)
+    }
+
+    /// Prepend a freshly-saved bookmark into the widget cache so the Recent
+    /// widget reflects it immediately (mirrors `BookmarksViewModel.load`).
+    static func refreshWidgets(adding b: Bookmark) {
+        var items = WidgetDataStore.loadBookmarks()
+        items.removeAll { $0.url == b.url }
+        items.insert(
+            WidgetBookmark(url: b.url, title: b.displayTitle, domain: b.domain, faviconUrl: b.faviconUrl),
+            at: 0
+        )
+        WidgetDataStore.saveBookmarks(Array(items.prefix(20)))
+    }
+}

Marks/Intents/MarksAppIntents.swift

@@ -0,0 +1,177 @@
+import Foundation
+import AppIntents
+
+// MARK: - Open
+
+/// Opens a bookmark in the in-app browser. Conforms to `OpenIntent` — the
+/// system-blessed "open" type Siri understands. (iOS 26 has no separate
+/// `system.open` App Schema; `OpenIntent` with an `AppEntity` target *is* the
+/// supported mechanism, so no schema macro is needed here.)
+struct OpenBookmarkIntent: OpenIntent {
+    static let title: LocalizedStringResource = "Open Bookmark"
+    static let openAppWhenRun = true
+
+    @Parameter(title: "Bookmark")
+    var target: BookmarkEntity
+
+    @MainActor
+    func perform() async throws -> some IntentResult {
+        IntentRouter.shared.openBookmark(url: target.url.absoluteString)
+        return .result()
+    }
+}
+
+// MARK: - Search
+
+/// Searches Marks and shows the results in the app's search tab.
+///
+/// Conforms to the formal `system.search` App Schema (`ShowInAppSearchResultsIntent`),
+/// which is what makes it executable by conversational Siri / Apple Intelligence:
+/// Siri hands over the spoken term as `criteria` and the app re-runs it in its
+/// own search UI. `searchScopes` defaults to `[.general]` for string criteria.
+@AppIntent(schema: .system.search)
+struct SearchMarksIntent {
+    static let title: LocalizedStringResource = "Search Marks"
+    static let description = IntentDescription("Search your Marks bookmarks.")
+
+    @Parameter(title: "Search", requestValueDialog: "What do you want to search for?")
+    var criteria: StringSearchCriteria
+
+    @MainActor
+    func perform() async throws -> some IntentResult {
+        IntentRouter.shared.search(criteria.term)
+        return .result()
+    }
+}
+
+// MARK: - Add
+
+/// Saves a link to Marks without opening the app. Mirrors the Share Extension's
+/// headless save, but goes through the typed `LinkdingAPI`.
+struct AddBookmarkIntent: AppIntent {
+    static let title: LocalizedStringResource = "Add Bookmark to Marks"
+    static let description = IntentDescription("Save a link to your Marks bookmarks.")
+    static let openAppWhenRun = false
+
+    @Parameter(title: "URL")
+    var url: URL
+
+    @Parameter(title: "Title")
+    var name: String?
+
+    @Parameter(title: "Tags")
+    var tags: [String]?
+
+    static var parameterSummary: some ParameterSummary {
+        Summary("Add \(\.$url) to Marks") {
+            \.$name
+            \.$tags
+        }
+    }
+
+    func perform() async throws -> some IntentResult & ReturnsValue<BookmarkEntity> & ProvidesDialog & ShowsSnippetView {
+        let api = try MarksIntent.api()
+        let create = BookmarkCreate(
+            url: url.absoluteString,
+            title: name ?? "",
+            tagNames: tags ?? [],
+            isArchived: false,
+            unread: true,
+            shared: false
+        )
+        let bookmark = try await api.createBookmark(create)
+        let entity = BookmarkEntity(from: bookmark)
+        MarksIntent.refreshWidgets(adding: bookmark)
+        return .result(
+            value: entity,
+            dialog: IntentDialog("Saved \(entity.title) to Marks."),
+            view: BookmarkSnippetView(entity: entity)
+        )
+    }
+}
+
+// MARK: - Show unread
+
+/// Returns the user's unread bookmarks — "what's unread in Marks?"
+struct ShowUnreadIntent: AppIntent {
+    static let title: LocalizedStringResource = "Show Unread Bookmarks"
+    static let description = IntentDescription("List the bookmarks you haven't read yet.")
+
+    func perform() async throws -> some IntentResult & ReturnsValue<[BookmarkEntity]> & ProvidesDialog {
+        let api = try MarksIntent.api()
+        let response = try await api.fetchBookmarks(limit: 10, unread: true)
+        let entities = response.results.map(BookmarkEntity.init(from:))
+        let dialog: IntentDialog = entities.isEmpty
+            ? "You have no unread bookmarks."
+            : "You have \(entities.count) unread bookmark\(entities.count == 1 ? "" : "s")."
+        return .result(value: entities, dialog: dialog)
+    }
+}
+
+// MARK: - Summarize (AI)
+
+/// Produces an AI summary of a bookmark via the bundled ClaudeService.
+struct SummarizeBookmarkIntent: AppIntent {
+    static let title: LocalizedStringResource = "Summarize Bookmark"
+    static let description = IntentDescription("Get an AI summary of a saved bookmark.")
+
+    @Parameter(title: "Bookmark")
+    var target: BookmarkEntity
+
+    static var parameterSummary: some ParameterSummary {
+        Summary("Summarize \(\.$target)")
+    }
+
+    func perform() async throws -> some IntentResult & ReturnsValue<String> & ProvidesDialog & ShowsSnippetView {
+        let claude = ClaudeService()
+        let (summary, _) = try await claude.enrich(bookmark: target.makeBookmark())
+        return .result(
+            value: summary,
+            dialog: IntentDialog("\(summary)"),
+            view: SummarySnippetView(title: target.title, host: target.host, summary: summary)
+        )
+    }
+}
+
+// MARK: - App Shortcuts
+
+struct MarksShortcuts: AppShortcutsProvider {
+    static var appShortcuts: [AppShortcut] {
+        AppShortcut(
+            intent: AddBookmarkIntent(),
+            phrases: [
+                "Add a bookmark to \(.applicationName)",
+                "Save this link to \(.applicationName)"
+            ],
+            shortTitle: "Add Bookmark",
+            systemImageName: "bookmark"
+        )
+        AppShortcut(
+            intent: SearchMarksIntent(),
+            phrases: [
+                "Search \(.applicationName)",
+                "Search my bookmarks in \(.applicationName)"
+            ],
+            shortTitle: "Search",
+            systemImageName: "magnifyingglass"
+        )
+        AppShortcut(
+            intent: ShowUnreadIntent(),
+            phrases: [
+                "Show unread in \(.applicationName)",
+                "What's unread in \(.applicationName)"
+            ],
+            shortTitle: "Unread",
+            systemImageName: "envelope.badge"
+        )
+        AppShortcut(
+            intent: SummarizeBookmarkIntent(),
+            phrases: [
+                "Summarize a bookmark in \(.applicationName)",
+                "Summarize this with \(.applicationName)"
+            ],
+            shortTitle: "Summarize",
+            systemImageName: "sparkles"
+        )
+    }
+}

Marks/MarksApp.swift

@@ -36,6 +36,8 @@ struct MainContainer: View {
     @State private var viewModel: BookmarksViewModel
     @State private var deepLinkBrowser: IdentifiableURL?
     @State private var showDeepLinkPlayer = false
+    @State private var selectedTab: AppTab = .bookmarks
+    @State private var router = IntentRouter.shared
 
     init(config: ServerConfig, onDisconnect: @escaping () -> Void) {
         self.config = config
@@ -45,20 +47,23 @@ struct MainContainer: View {
     }
 
     var body: some View {
-        TabView {
-            Tab("Bookmarks", systemImage: "bookmark") {
+        TabView(selection: $selectedTab) {
+            Tab("Bookmarks", systemImage: "bookmark", value: AppTab.bookmarks) {
                 BookmarksView(viewModel: viewModel, onDisconnect: onDisconnect)
             }
-            Tab("Tags", systemImage: "tag") {
+            Tab("Tags", systemImage: "tag", value: AppTab.tags) {
                 TagsView(viewModel: viewModel)
             }
-            Tab(role: .search) {
+            Tab(value: AppTab.search, role: .search) {
                 SearchView(viewModel: viewModel)
             }
         }
         .onOpenURL { url in
             handleDeepLink(url)
         }
+        .task { applyPendingIntent() }
+        .onChange(of: router.openBookmarkURL) { _, _ in applyPendingIntent() }
+        .onChange(of: router.searchRequest) { _, _ in applyPendingIntent() }
         .sheet(item: $deepLinkBrowser) { item in
             BrowserView(url: item.url, title: item.url.host ?? "", claude: viewModel.claude, podcastPlayer: viewModel.podcastPlayer)
         }
@@ -73,6 +78,27 @@ struct MainContainer: View {
         }
     }
 
+    /// Reacts to requests an App Intent placed on `IntentRouter` (opening a
+    /// bookmark, or searching). Also runs once at launch so cold-starts via an
+    /// intent are honored.
+    private func applyPendingIntent() {
+        if let urlString = router.openBookmarkURL {
+            router.openBookmarkURL = nil
+            if let url = URL(string: urlString) {
+                deepLinkBrowser = IdentifiableURL(url: url)
+            }
+        }
+        if let query = router.searchRequest {
+            selectedTab = .search
+            Task {
+                viewModel.searchQuery = query
+                await viewModel.search()
+            }
+            // SearchView consumes the text from the router on appear; leave it
+            // set until then, then SearchView clears it.
+        }
+    }
+
     private func handleDeepLink(_ url: URL) {
         guard url.scheme == "marks",
               let comps = URLComponents(url: url, resolvingAgainstBaseURL: false),

Marks/Views/SearchView.swift

@@ -57,6 +57,15 @@ struct SearchView: View {
         }
         .searchable(text: $searchText, prompt: "Titles, URLs, tags…")
         .onChange(of: searchText) { _, _ in scheduleSearch() }
+        .onAppear { consumeIntentSearch() }
+        .onChange(of: IntentRouter.shared.searchRequest) { _, _ in consumeIntentSearch() }
+    }
+
+    /// Pulls a query handed over by `SearchMarksIntent` into the search field.
+    private func consumeIntentSearch() {
+        guard let query = IntentRouter.shared.searchRequest else { return }
+        searchText = query
+        IntentRouter.shared.searchRequest = nil
     }
 
     private var results: [Bookmark] {

project.yml

@@ -74,6 +74,7 @@ targets:
       - target: ShareExtension
       - target: MarksWidget
       - sdk: WidgetKit.framework
+      - sdk: AppIntents.framework
 
   ShareExtension:
     type: app-extension