Add Quick Look Preview and Thumbnail extensions for .casera files

- Add CaseraQLPreview extension to show custom preview with contractor
  details and import instructions when viewing .casera files
- Add CaseraQLThumbnail extension to display teal icon in Messages
  and Files app instead of generic white box
- Update UTExportedTypeDeclarations to conform to public.content
  for better system file type recognition

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

iosApp/CaseraQLPreview/Base.lproj/MainInterface.storyboard

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="22505" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="M4Y-Lb-cyx">
+    <device id="retina6_12" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="22504"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--Preview View Controller-->
+        <scene sceneID="cwh-vc-ff4">
+            <objects>
+                <viewController id="M4Y-Lb-cyx" customClass="PreviewViewController" customModule="CaseraQLPreview" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="S3S-Oj-5AN">
+                        <rect key="frame" x="0.0" y="0.0" width="393" height="852"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <viewLayoutGuide key="safeArea" id="bzV-dz-m25"/>
+                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                    </view>
+                    <extendedEdge key="edgesForExtendedLayout"/>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="vXp-U4-Rya" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="705" y="299"/>
+        </scene>
+    </scenes>
+</document>

iosApp/CaseraQLPreview/Info.plist

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDisplayName</key>
+	<string>Casera Preview</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionAttributes</key>
+		<dict>
+			<key>QLSupportedContentTypes</key>
+			<array>
+				<string>com.casera.contractor</string>
+			</array>
+			<key>QLSupportsSearchableItems</key>
+			<false/>
+		</dict>
+		<key>NSExtensionMainStoryboard</key>
+		<string>MainInterface</string>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.quicklook.preview</string>
+	</dict>
+</dict>
+</plist>

iosApp/CaseraQLPreview/PreviewProvider.swift

@@ -0,0 +1,57 @@
+//
+//  PreviewProvider.swift
+//  CaseraQLPreview
+//
+//  Created by Trey Tartt on 12/6/25.
+//
+
+import QuickLook
+
+class PreviewProvider: QLPreviewProvider, QLPreviewingController {
+    
+
+    /*
+     Use a QLPreviewProvider to provide data-based previews.
+     
+     To set up your extension as a data-based preview extension:
+
+     - Modify the extension's Info.plist by setting
+       <key>QLIsDataBasedPreview</key>
+       <true/>
+     
+     - Add the supported content types to QLSupportedContentTypes array in the extension's Info.plist.
+
+     - Remove
+       <key>NSExtensionMainStoryboard</key>
+       <string>MainInterface</string>
+     
+       and replace it by setting the NSExtensionPrincipalClass to this class, e.g.
+       <key>NSExtensionPrincipalClass</key>
+       <string>$(PRODUCT_MODULE_NAME).PreviewProvider</string>
+     
+     - Implement providePreview(for:)
+     */
+    
+    func providePreview(for request: QLFilePreviewRequest) async throws -> QLPreviewReply {
+    
+        //You can create a QLPreviewReply in several ways, depending on the format of the data you want to return.
+        //To return Data of a supported content type:
+        
+        let contentType = UTType.plainText // replace with your data type
+        
+        let reply = QLPreviewReply.init(dataOfContentType: contentType, contentSize: CGSize.init(width: 800, height: 800)) { (replyToUpdate : QLPreviewReply) in
+
+            let data = Data("Hello world".utf8)
+            
+            //setting the stringEncoding for text and html data is optional and defaults to String.Encoding.utf8
+            replyToUpdate.stringEncoding = .utf8
+            
+            //initialize your data here
+            
+            return data
+        }
+                
+        return reply
+    }
+
+}

iosApp/CaseraQLPreview/PreviewViewController.swift

@@ -0,0 +1,264 @@
+import UIKit
+import QuickLook
+
+class PreviewViewController: UIViewController, QLPreviewingController {
+
+    // MARK: - UI Elements
+
+    private let containerView: UIView = {
+        let view = UIView()
+        view.translatesAutoresizingMaskIntoConstraints = false
+        return view
+    }()
+
+    private let iconImageView: UIImageView = {
+        let imageView = UIImageView()
+        imageView.translatesAutoresizingMaskIntoConstraints = false
+        imageView.contentMode = .scaleAspectFit
+        imageView.tintColor = UIColor(red: 7/255, green: 160/255, blue: 195/255, alpha: 1) // App primary color
+        let config = UIImage.SymbolConfiguration(pointSize: 60, weight: .light)
+        imageView.image = UIImage(systemName: "person.crop.rectangle.stack", withConfiguration: config)
+        return imageView
+    }()
+
+    private let titleLabel: UILabel = {
+        let label = UILabel()
+        label.translatesAutoresizingMaskIntoConstraints = false
+        label.font = .systemFont(ofSize: 24, weight: .bold)
+        label.textColor = .label
+        label.textAlignment = .center
+        label.numberOfLines = 2
+        return label
+    }()
+
+    private let subtitleLabel: UILabel = {
+        let label = UILabel()
+        label.translatesAutoresizingMaskIntoConstraints = false
+        label.font = .systemFont(ofSize: 15, weight: .medium)
+        label.textColor = .secondaryLabel
+        label.textAlignment = .center
+        label.text = "Casera Contractor File"
+        return label
+    }()
+
+    private let dividerView: UIView = {
+        let view = UIView()
+        view.translatesAutoresizingMaskIntoConstraints = false
+        view.backgroundColor = .separator
+        return view
+    }()
+
+    private let detailsStackView: UIStackView = {
+        let stack = UIStackView()
+        stack.translatesAutoresizingMaskIntoConstraints = false
+        stack.axis = .vertical
+        stack.spacing = 12
+        stack.alignment = .leading
+        return stack
+    }()
+
+    private let instructionCard: UIView = {
+        let view = UIView()
+        view.translatesAutoresizingMaskIntoConstraints = false
+        view.backgroundColor = UIColor(red: 7/255, green: 160/255, blue: 195/255, alpha: 0.1)
+        view.layer.cornerRadius = 12
+        return view
+    }()
+
+    private let instructionLabel: UILabel = {
+        let label = UILabel()
+        label.translatesAutoresizingMaskIntoConstraints = false
+        label.font = .systemFont(ofSize: 15, weight: .medium)
+        label.textColor = UIColor(red: 7/255, green: 160/255, blue: 195/255, alpha: 1)
+        label.textAlignment = .center
+        label.numberOfLines = 0
+        label.text = "Tap the share button below, then select \"Casera\" to import this contractor."
+        return label
+    }()
+
+    private let arrowImageView: UIImageView = {
+        let imageView = UIImageView()
+        imageView.translatesAutoresizingMaskIntoConstraints = false
+        imageView.contentMode = .scaleAspectFit
+        imageView.tintColor = .secondaryLabel
+        let config = UIImage.SymbolConfiguration(pointSize: 24, weight: .medium)
+        imageView.image = UIImage(systemName: "arrow.down", withConfiguration: config)
+        return imageView
+    }()
+
+    // MARK: - Data
+
+    private var contractorData: ContractorPreviewData?
+
+    // MARK: - Lifecycle
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        print("CaseraQLPreview: viewDidLoad called")
+        setupUI()
+    }
+
+    // MARK: - Setup
+
+    private func setupUI() {
+        view.backgroundColor = .systemBackground
+
+        view.addSubview(containerView)
+        containerView.addSubview(iconImageView)
+        containerView.addSubview(titleLabel)
+        containerView.addSubview(subtitleLabel)
+        containerView.addSubview(dividerView)
+        containerView.addSubview(detailsStackView)
+        containerView.addSubview(instructionCard)
+        instructionCard.addSubview(instructionLabel)
+        containerView.addSubview(arrowImageView)
+
+        NSLayoutConstraint.activate([
+            containerView.centerXAnchor.constraint(equalTo: view.centerXAnchor),
+            containerView.centerYAnchor.constraint(equalTo: view.centerYAnchor, constant: -40),
+            containerView.leadingAnchor.constraint(greaterThanOrEqualTo: view.leadingAnchor, constant: 32),
+            containerView.trailingAnchor.constraint(lessThanOrEqualTo: view.trailingAnchor, constant: -32),
+            containerView.widthAnchor.constraint(lessThanOrEqualToConstant: 340),
+
+            iconImageView.topAnchor.constraint(equalTo: containerView.topAnchor),
+            iconImageView.centerXAnchor.constraint(equalTo: containerView.centerXAnchor),
+            iconImageView.widthAnchor.constraint(equalToConstant: 80),
+            iconImageView.heightAnchor.constraint(equalToConstant: 80),
+
+            titleLabel.topAnchor.constraint(equalTo: iconImageView.bottomAnchor, constant: 16),
+            titleLabel.leadingAnchor.constraint(equalTo: containerView.leadingAnchor),
+            titleLabel.trailingAnchor.constraint(equalTo: containerView.trailingAnchor),
+
+            subtitleLabel.topAnchor.constraint(equalTo: titleLabel.bottomAnchor, constant: 4),
+            subtitleLabel.leadingAnchor.constraint(equalTo: containerView.leadingAnchor),
+            subtitleLabel.trailingAnchor.constraint(equalTo: containerView.trailingAnchor),
+
+            dividerView.topAnchor.constraint(equalTo: subtitleLabel.bottomAnchor, constant: 20),
+            dividerView.leadingAnchor.constraint(equalTo: containerView.leadingAnchor),
+            dividerView.trailingAnchor.constraint(equalTo: containerView.trailingAnchor),
+            dividerView.heightAnchor.constraint(equalToConstant: 1),
+
+            detailsStackView.topAnchor.constraint(equalTo: dividerView.bottomAnchor, constant: 20),
+            detailsStackView.leadingAnchor.constraint(equalTo: containerView.leadingAnchor),
+            detailsStackView.trailingAnchor.constraint(equalTo: containerView.trailingAnchor),
+
+            instructionCard.topAnchor.constraint(equalTo: detailsStackView.bottomAnchor, constant: 24),
+            instructionCard.leadingAnchor.constraint(equalTo: containerView.leadingAnchor),
+            instructionCard.trailingAnchor.constraint(equalTo: containerView.trailingAnchor),
+
+            instructionLabel.topAnchor.constraint(equalTo: instructionCard.topAnchor, constant: 16),
+            instructionLabel.leadingAnchor.constraint(equalTo: instructionCard.leadingAnchor, constant: 16),
+            instructionLabel.trailingAnchor.constraint(equalTo: instructionCard.trailingAnchor, constant: -16),
+            instructionLabel.bottomAnchor.constraint(equalTo: instructionCard.bottomAnchor, constant: -16),
+
+            arrowImageView.topAnchor.constraint(equalTo: instructionCard.bottomAnchor, constant: 16),
+            arrowImageView.centerXAnchor.constraint(equalTo: containerView.centerXAnchor),
+            arrowImageView.bottomAnchor.constraint(equalTo: containerView.bottomAnchor),
+        ])
+    }
+
+    private func addDetailRow(icon: String, text: String) {
+        let rowStack = UIStackView()
+        rowStack.axis = .horizontal
+        rowStack.spacing = 12
+        rowStack.alignment = .center
+
+        let iconView = UIImageView()
+        iconView.translatesAutoresizingMaskIntoConstraints = false
+        let config = UIImage.SymbolConfiguration(pointSize: 16, weight: .medium)
+        iconView.image = UIImage(systemName: icon, withConfiguration: config)
+        iconView.tintColor = .secondaryLabel
+        iconView.widthAnchor.constraint(equalToConstant: 24).isActive = true
+        iconView.heightAnchor.constraint(equalToConstant: 24).isActive = true
+
+        let textLabel = UILabel()
+        textLabel.font = .systemFont(ofSize: 15)
+        textLabel.textColor = .label
+        textLabel.text = text
+        textLabel.numberOfLines = 1
+
+        rowStack.addArrangedSubview(iconView)
+        rowStack.addArrangedSubview(textLabel)
+
+        detailsStackView.addArrangedSubview(rowStack)
+    }
+
+    // MARK: - QLPreviewingController
+
+    func preparePreviewOfFile(at url: URL) async throws {
+        print("CaseraQLPreview: preparePreviewOfFile called with URL: \(url)")
+        // Parse the .casera file
+        let data = try Data(contentsOf: url)
+        let decoder = JSONDecoder()
+        let contractor = try decoder.decode(ContractorPreviewData.self, from: data)
+        self.contractorData = contractor
+        print("CaseraQLPreview: Parsed contractor: \(contractor.name)")
+
+        await MainActor.run {
+            self.updateUI(with: contractor)
+        }
+    }
+
+    private func updateUI(with contractor: ContractorPreviewData) {
+        titleLabel.text = contractor.name
+
+        // Clear existing details
+        detailsStackView.arrangedSubviews.forEach { $0.removeFromSuperview() }
+
+        // Add details
+        if let company = contractor.company, !company.isEmpty {
+            addDetailRow(icon: "building.2", text: company)
+        }
+
+        if let phone = contractor.phone, !phone.isEmpty {
+            addDetailRow(icon: "phone", text: phone)
+        }
+
+        if let email = contractor.email, !email.isEmpty {
+            addDetailRow(icon: "envelope", text: email)
+        }
+
+        if !contractor.specialtyNames.isEmpty {
+            let specialties = contractor.specialtyNames.joined(separator: ", ")
+            addDetailRow(icon: "wrench.and.screwdriver", text: specialties)
+        }
+
+        if let exportedBy = contractor.exportedBy, !exportedBy.isEmpty {
+            addDetailRow(icon: "person", text: "Shared by \(exportedBy)")
+        }
+    }
+}
+
+// MARK: - Data Model
+
+struct ContractorPreviewData: Codable {
+    let version: Int
+    let name: String
+    let company: String?
+    let phone: String?
+    let email: String?
+    let website: String?
+    let notes: String?
+    let streetAddress: String?
+    let city: String?
+    let stateProvince: String?
+    let postalCode: String?
+    let specialtyNames: [String]
+    let rating: Double?
+    let isFavorite: Bool
+    let exportedAt: String?
+    let exportedBy: String?
+
+    enum CodingKeys: String, CodingKey {
+        case version, name, company, phone, email, website, notes
+        case streetAddress = "street_address"
+        case city
+        case stateProvince = "state_province"
+        case postalCode = "postal_code"
+        case specialtyNames = "specialty_names"
+        case rating
+        case isFavorite = "is_favorite"
+        case exportedAt = "exported_at"
+        case exportedBy = "exported_by"
+    }
+}

iosApp/CaseraQLThumbnail/Info.plist

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDisplayName</key>
+	<string>Casera Thumbnail</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionAttributes</key>
+		<dict>
+			<key>QLSupportedContentTypes</key>
+			<array>
+				<string>com.casera.contractor</string>
+			</array>
+			<key>QLThumbnailMinimumDimension</key>
+			<integer>0</integer>
+		</dict>
+		<key>NSExtensionPrincipalClass</key>
+		<string>$(PRODUCT_MODULE_NAME).ThumbnailProvider</string>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.quicklook.thumbnail</string>
+	</dict>
+</dict>
+</plist>

iosApp/CaseraQLThumbnail/ThumbnailProvider.swift

@@ -0,0 +1,38 @@
+//
+//  ThumbnailProvider.swift
+//  CaseraQLThumbnail
+//
+//  Created by Trey Tartt on 12/6/25.
+//
+
+import UIKit
+import QuickLookThumbnailing
+
+class ThumbnailProvider: QLThumbnailProvider {
+
+    override func provideThumbnail(for request: QLFileThumbnailRequest, _ handler: @escaping (QLThumbnailReply?, Error?) -> Void) {
+
+        let thumbnailSize = request.maximumSize
+
+        handler(QLThumbnailReply(contextSize: thumbnailSize, currentContextDrawing: { () -> Bool in
+            // Draw background
+            let backgroundColor = UIColor(red: 7/255, green: 160/255, blue: 195/255, alpha: 1)
+            backgroundColor.setFill()
+            UIRectFill(CGRect(origin: .zero, size: thumbnailSize))
+
+            // Draw icon
+            let config = UIImage.SymbolConfiguration(pointSize: min(thumbnailSize.width, thumbnailSize.height) * 0.5, weight: .regular)
+            if let icon = UIImage(systemName: "person.crop.rectangle.stack", withConfiguration: config) {
+                let tintedIcon = icon.withTintColor(.white, renderingMode: .alwaysOriginal)
+                let iconSize = tintedIcon.size
+                let iconOrigin = CGPoint(
+                    x: (thumbnailSize.width - iconSize.width) / 2,
+                    y: (thumbnailSize.height - iconSize.height) / 2
+                )
+                tintedIcon.draw(at: iconOrigin)
+            }
+
+            return true
+        }), nil)
+    }
+}

iosApp/iosApp.xcodeproj/project.pbxproj

@@ -10,6 +10,10 @@
 		1C0789402EBC218B00392B46 /* WidgetKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1C07893F2EBC218B00392B46 /* WidgetKit.framework */; };
 		1C0789422EBC218B00392B46 /* SwiftUI.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1C0789412EBC218B00392B46 /* SwiftUI.framework */; };
 		1C0789532EBC218D00392B46 /* CaseraExtension.appex in Embed Foundation Extensions */ = {isa = PBXBuildFile; fileRef = 1C07893D2EBC218B00392B46 /* CaseraExtension.appex */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
+		1C81F26B2EE416EE000739EA /* QuickLook.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1C81F26A2EE416EE000739EA /* QuickLook.framework */; };
+		1C81F2772EE416EF000739EA /* CaseraQLPreview.appex in Embed Foundation Extensions */ = {isa = PBXBuildFile; fileRef = 1C81F2692EE416EE000739EA /* CaseraQLPreview.appex */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
+		1C81F2822EE41BB6000739EA /* QuickLookThumbnailing.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1C81F2812EE41BB6000739EA /* QuickLookThumbnailing.framework */; };
+		1C81F2892EE41BB6000739EA /* CaseraQLThumbnail.appex in Embed Foundation Extensions */ = {isa = PBXBuildFile; fileRef = 1C81F2802EE41BB6000739EA /* CaseraQLThumbnail.appex */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -20,6 +24,20 @@
 			remoteGlobalIDString = 1C07893C2EBC218B00392B46;
 			remoteInfo = CaseraExtension;
 		};
+		1C81F2752EE416EF000739EA /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 6A3E1D84F9F1A2FD92A75A6C /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 1C81F2682EE416EE000739EA;
+			remoteInfo = CaseraQLPreview;
+		};
+		1C81F2872EE41BB6000739EA /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 6A3E1D84F9F1A2FD92A75A6C /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 1C81F27F2EE41BB6000739EA;
+			remoteInfo = CaseraQLThumbnail;
+		};
 		1CBF16002ECD8AE4001BF56C /* PBXContainerItemProxy */ = {
 			isa = PBXContainerItemProxy;
 			containerPortal = 6A3E1D84F9F1A2FD92A75A6C /* Project object */;
@@ -44,6 +62,8 @@
 			dstSubfolderSpec = 13;
 			files = (
 				1C0789532EBC218D00392B46 /* CaseraExtension.appex in Embed Foundation Extensions */,
+				1C81F2892EE41BB6000739EA /* CaseraQLThumbnail.appex in Embed Foundation Extensions */,
+				1C81F2772EE416EF000739EA /* CaseraQLPreview.appex in Embed Foundation Extensions */,
 			);
 			name = "Embed Foundation Extensions";
 			runOnlyForDeploymentPostprocessing = 0;
@@ -56,6 +76,10 @@
 		1C0789412EBC218B00392B46 /* SwiftUI.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = SwiftUI.framework; path = System/Library/Frameworks/SwiftUI.framework; sourceTree = SDKROOT; };
 		1C0789612EBC2F5400392B46 /* CaseraExtension.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = CaseraExtension.entitlements; sourceTree = "<group>"; };
 		1C685CD22EC5539000A9669B /* CaseraTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = CaseraTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		1C81F2692EE416EE000739EA /* CaseraQLPreview.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = CaseraQLPreview.appex; sourceTree = BUILT_PRODUCTS_DIR; };
+		1C81F26A2EE416EE000739EA /* QuickLook.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = QuickLook.framework; path = System/Library/Frameworks/QuickLook.framework; sourceTree = SDKROOT; };
+		1C81F2802EE41BB6000739EA /* CaseraQLThumbnail.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = CaseraQLThumbnail.appex; sourceTree = BUILT_PRODUCTS_DIR; };
+		1C81F2812EE41BB6000739EA /* QuickLookThumbnailing.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = QuickLookThumbnailing.framework; path = System/Library/Frameworks/QuickLookThumbnailing.framework; sourceTree = SDKROOT; };
 		1C87A0C42EDB8ED40081E450 /* CaseraUITests.xctestplan */ = {isa = PBXFileReference; lastKnownFileType = text; path = CaseraUITests.xctestplan; sourceTree = "<group>"; };
 		1CBF1BED2ECD9768001BF56C /* CaseraUITests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = CaseraUITests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		4B07E04F794A4C1CAA8CCD5D /* PhotoViewerSheet.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PhotoViewerSheet.swift; sourceTree = "<group>"; };
@@ -85,6 +109,20 @@
 			);
 			target = 1CBF1BEC2ECD9768001BF56C /* CaseraUITests */;
 		};
+		1C81F27B2EE416EF000739EA /* Exceptions for "CaseraQLPreview" folder in "CaseraQLPreview" target */ = {
+			isa = PBXFileSystemSynchronizedBuildFileExceptionSet;
+			membershipExceptions = (
+				Info.plist,
+			);
+			target = 1C81F2682EE416EE000739EA /* CaseraQLPreview */;
+		};
+		1C81F28D2EE41BB6000739EA /* Exceptions for "CaseraQLThumbnail" folder in "CaseraQLThumbnail" target */ = {
+			isa = PBXFileSystemSynchronizedBuildFileExceptionSet;
+			membershipExceptions = (
+				Info.plist,
+			);
+			target = 1C81F27F2EE41BB6000739EA /* CaseraQLThumbnail */;
+		};
 		1C87A67A2EDCC3100081E450 /* Exceptions for "iosApp" folder in "CaseraExtension" target */ = {
 			isa = PBXFileSystemSynchronizedBuildFileExceptionSet;
 			membershipExceptions = (
@@ -125,6 +163,22 @@
 			path = CaseraTests;
 			sourceTree = "<group>";
 		};
+		1C81F26C2EE416EE000739EA /* CaseraQLPreview */ = {
+			isa = PBXFileSystemSynchronizedRootGroup;
+			exceptions = (
+				1C81F27B2EE416EF000739EA /* Exceptions for "CaseraQLPreview" folder in "CaseraQLPreview" target */,
+			);
+			path = CaseraQLPreview;
+			sourceTree = "<group>";
+		};
+		1C81F2832EE41BB6000739EA /* CaseraQLThumbnail */ = {
+			isa = PBXFileSystemSynchronizedRootGroup;
+			exceptions = (
+				1C81F28D2EE41BB6000739EA /* Exceptions for "CaseraQLThumbnail" folder in "CaseraQLThumbnail" target */,
+			);
+			path = CaseraQLThumbnail;
+			sourceTree = "<group>";
+		};
 		1CBF1BEE2ECD9768001BF56C /* CaseraUITests */ = {
 			isa = PBXFileSystemSynchronizedRootGroup;
 			exceptions = (
@@ -167,6 +221,22 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		1C81F2662EE416EE000739EA /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				1C81F26B2EE416EE000739EA /* QuickLook.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		1C81F27D2EE41BB6000739EA /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				1C81F2822EE41BB6000739EA /* QuickLookThumbnailing.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		1CBF1BEA2ECD9768001BF56C /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
@@ -189,6 +259,8 @@
 			children = (
 				1C07893F2EBC218B00392B46 /* WidgetKit.framework */,
 				1C0789412EBC218B00392B46 /* SwiftUI.framework */,
+				1C81F26A2EE416EE000739EA /* QuickLook.framework */,
+				1C81F2812EE41BB6000739EA /* QuickLookThumbnailing.framework */,
 			);
 			name = Frameworks;
 			sourceTree = "<group>";
@@ -212,6 +284,8 @@
 				1C0789432EBC218B00392B46 /* Casera */,
 				1C685CD32EC5539000A9669B /* CaseraTests */,
 				1CBF1BEE2ECD9768001BF56C /* CaseraUITests */,
+				1C81F26C2EE416EE000739EA /* CaseraQLPreview */,
+				1C81F2832EE41BB6000739EA /* CaseraQLThumbnail */,
 				1C07893E2EBC218B00392B46 /* Frameworks */,
 				FA6022B7B844191C54E57EB4 /* Products */,
 				1C078A1B2EC1820B00392B46 /* Recovered References */,
@@ -225,6 +299,8 @@
 				1C07893D2EBC218B00392B46 /* CaseraExtension.appex */,
 				1C685CD22EC5539000A9669B /* CaseraTests.xctest */,
 				1CBF1BED2ECD9768001BF56C /* CaseraUITests.xctest */,
+				1C81F2692EE416EE000739EA /* CaseraQLPreview.appex */,
+				1C81F2802EE41BB6000739EA /* CaseraQLThumbnail.appex */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -277,6 +353,50 @@
 			productReference = 1C685CD22EC5539000A9669B /* CaseraTests.xctest */;
 			productType = "com.apple.product-type.bundle.unit-test";
 		};
+		1C81F2682EE416EE000739EA /* CaseraQLPreview */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 1C81F2782EE416EF000739EA /* Build configuration list for PBXNativeTarget "CaseraQLPreview" */;
+			buildPhases = (
+				1C81F2652EE416EE000739EA /* Sources */,
+				1C81F2662EE416EE000739EA /* Frameworks */,
+				1C81F2672EE416EE000739EA /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			fileSystemSynchronizedGroups = (
+				1C81F26C2EE416EE000739EA /* CaseraQLPreview */,
+			);
+			name = CaseraQLPreview;
+			packageProductDependencies = (
+			);
+			productName = CaseraQLPreview;
+			productReference = 1C81F2692EE416EE000739EA /* CaseraQLPreview.appex */;
+			productType = "com.apple.product-type.app-extension";
+		};
+		1C81F27F2EE41BB6000739EA /* CaseraQLThumbnail */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 1C81F28A2EE41BB6000739EA /* Build configuration list for PBXNativeTarget "CaseraQLThumbnail" */;
+			buildPhases = (
+				1C81F27C2EE41BB6000739EA /* Sources */,
+				1C81F27D2EE41BB6000739EA /* Frameworks */,
+				1C81F27E2EE41BB6000739EA /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			fileSystemSynchronizedGroups = (
+				1C81F2832EE41BB6000739EA /* CaseraQLThumbnail */,
+			);
+			name = CaseraQLThumbnail;
+			packageProductDependencies = (
+			);
+			productName = CaseraQLThumbnail;
+			productReference = 1C81F2802EE41BB6000739EA /* CaseraQLThumbnail.appex */;
+			productType = "com.apple.product-type.app-extension";
+		};
 		1CBF1BEC2ECD9768001BF56C /* CaseraUITests */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = 1CBF1BF52ECD9768001BF56C /* Build configuration list for PBXNativeTarget "CaseraUITests" */;
@@ -314,6 +434,8 @@
 			);
 			dependencies = (
 				1C0789522EBC218D00392B46 /* PBXTargetDependency */,
+				1C81F2762EE416EF000739EA /* PBXTargetDependency */,
+				1C81F2882EE41BB6000739EA /* PBXTargetDependency */,
 			);
 			fileSystemSynchronizedGroups = (
 				E822E6B231E7783DE992578C /* iosApp */,
@@ -342,6 +464,12 @@
 						CreatedOnToolsVersion = 26.1.1;
 						TestTargetID = D4ADB376A7A4CFB73469E173;
 					};
+					1C81F2682EE416EE000739EA = {
+						CreatedOnToolsVersion = 26.1.1;
+					};
+					1C81F27F2EE41BB6000739EA = {
+						CreatedOnToolsVersion = 26.1.1;
+					};
 					1CBF1BEC2ECD9768001BF56C = {
 						CreatedOnToolsVersion = 26.1.1;
 						TestTargetID = D4ADB376A7A4CFB73469E173;
@@ -369,6 +497,8 @@
 				1C07893C2EBC218B00392B46 /* CaseraExtension */,
 				1C685CD12EC5539000A9669B /* CaseraTests */,
 				1CBF1BEC2ECD9768001BF56C /* CaseraUITests */,
+				1C81F2682EE416EE000739EA /* CaseraQLPreview */,
+				1C81F27F2EE41BB6000739EA /* CaseraQLThumbnail */,
 			);
 		};
 /* End PBXProject section */
@@ -388,6 +518,20 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		1C81F2672EE416EE000739EA /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		1C81F27E2EE41BB6000739EA /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		1CBF1BEB2ECD9768001BF56C /* Resources */ = {
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -441,6 +585,20 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		1C81F2652EE416EE000739EA /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+		1C81F27C2EE41BB6000739EA /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		1CBF1BE92ECD9768001BF56C /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -463,6 +621,16 @@
 			target = 1C07893C2EBC218B00392B46 /* CaseraExtension */;
 			targetProxy = 1C0789512EBC218D00392B46 /* PBXContainerItemProxy */;
 		};
+		1C81F2762EE416EF000739EA /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 1C81F2682EE416EE000739EA /* CaseraQLPreview */;
+			targetProxy = 1C81F2752EE416EF000739EA /* PBXContainerItemProxy */;
+		};
+		1C81F2882EE41BB6000739EA /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 1C81F27F2EE41BB6000739EA /* CaseraQLThumbnail */;
+			targetProxy = 1C81F2872EE41BB6000739EA /* PBXContainerItemProxy */;
+		};
 		1CBF16012ECD8AE4001BF56C /* PBXTargetDependency */ = {
 			isa = PBXTargetDependency;
 			target = D4ADB376A7A4CFB73469E173 /* Casera */;
@@ -622,6 +790,130 @@
 			};
 			name = Release;
 		};
+		1C81F2792EE416EF000739EA /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_IDENTITY = "Apple Development";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = V3PF3M6B6U;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = CaseraQLPreview/Info.plist;
+				INFOPLIST_KEY_CFBundleDisplayName = CaseraQLPreview;
+				INFOPLIST_KEY_NSHumanReadableCopyright = "";
+				IPHONEOS_DEPLOYMENT_TARGET = 26.1;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@executable_path/../../Frameworks",
+				);
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = com.tt.casera.CaseraDev.CaseraQLPreview;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SKIP_INSTALL = YES;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
+				SWIFT_APPROACHABLE_CONCURRENCY = YES;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_UPCOMING_FEATURE_MEMBER_IMPORT_VISIBILITY = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Debug;
+		};
+		1C81F27A2EE416EF000739EA /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_IDENTITY = "Apple Development";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = V3PF3M6B6U;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = CaseraQLPreview/Info.plist;
+				INFOPLIST_KEY_CFBundleDisplayName = CaseraQLPreview;
+				INFOPLIST_KEY_NSHumanReadableCopyright = "";
+				IPHONEOS_DEPLOYMENT_TARGET = 26.1;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@executable_path/../../Frameworks",
+				);
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = com.tt.casera.CaseraDev.CaseraQLPreview;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SKIP_INSTALL = YES;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
+				SWIFT_APPROACHABLE_CONCURRENCY = YES;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_UPCOMING_FEATURE_MEMBER_IMPORT_VISIBILITY = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Release;
+		};
+		1C81F28B2EE41BB6000739EA /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_IDENTITY = "Apple Development";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = V3PF3M6B6U;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = CaseraQLThumbnail/Info.plist;
+				INFOPLIST_KEY_CFBundleDisplayName = CaseraQLThumbnail;
+				INFOPLIST_KEY_NSHumanReadableCopyright = "";
+				IPHONEOS_DEPLOYMENT_TARGET = 26.1;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@executable_path/../../Frameworks",
+				);
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = com.tt.casera.CaseraDev.CaseraQLThumbnail;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SKIP_INSTALL = YES;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
+				SWIFT_APPROACHABLE_CONCURRENCY = YES;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_UPCOMING_FEATURE_MEMBER_IMPORT_VISIBILITY = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Debug;
+		};
+		1C81F28C2EE41BB6000739EA /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_IDENTITY = "Apple Development";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = V3PF3M6B6U;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = CaseraQLThumbnail/Info.plist;
+				INFOPLIST_KEY_CFBundleDisplayName = CaseraQLThumbnail;
+				INFOPLIST_KEY_NSHumanReadableCopyright = "";
+				IPHONEOS_DEPLOYMENT_TARGET = 26.1;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@executable_path/../../Frameworks",
+				);
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = com.tt.casera.CaseraDev.CaseraQLThumbnail;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SKIP_INSTALL = YES;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
+				SWIFT_APPROACHABLE_CONCURRENCY = YES;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_UPCOMING_FEATURE_MEMBER_IMPORT_VISIBILITY = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Release;
+		};
 		1CBF1BF62ECD9768001BF56C /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
@@ -852,6 +1144,24 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		1C81F2782EE416EF000739EA /* Build configuration list for PBXNativeTarget "CaseraQLPreview" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				1C81F2792EE416EF000739EA /* Debug */,
+				1C81F27A2EE416EF000739EA /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		1C81F28A2EE41BB6000739EA /* Build configuration list for PBXNativeTarget "CaseraQLThumbnail" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				1C81F28B2EE41BB6000739EA /* Debug */,
+				1C81F28C2EE41BB6000739EA /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 		1CBF1BF52ECD9768001BF56C /* Build configuration list for PBXNativeTarget "CaseraUITests" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (

iosApp/iosApp/Info.plist

@@ -39,6 +39,8 @@
 	<array>
 		<string>remote-notification</string>
 	</array>
+	<key>LSSupportsOpeningDocumentsInPlace</key>
+	<false/>
 	<key>CFBundleDocumentTypes</key>
 	<array>
 		<dict>
@@ -63,9 +65,11 @@
 			<string>Casera Contractor</string>
 			<key>UTTypeConformsTo</key>
 			<array>
-				<string>public.json</string>
 				<string>public.data</string>
+				<string>public.content</string>
 			</array>
+			<key>UTTypeIconFiles</key>
+			<array/>
 			<key>UTTypeTagSpecification</key>
 			<dict>
 				<key>public.filename-extension</key>
@@ -73,7 +77,7 @@
 					<string>casera</string>
 				</array>
 				<key>public.mime-type</key>
-				<string>application/json</string>
+				<string>application/x-casera</string>
 			</dict>
 		</dict>
 	</array>