swiftformat

.github/workflows/Xcode-build-analyze.yml

@@ -22,20 +22,20 @@ jobs:
           xcodebuild -version
 
       - name: Resolve packages
-        run: xcodebuild -resolvePackageDependencies -project birch.xcodeproj -scheme birch
+        run: xcodebuild -resolvePackageDependencies -project hellbender.xcodeproj -scheme hellbender
 
       - name: Validate Package.resolved
         run: |
-          if ! git diff --quiet birch.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved; then
+          if ! git diff --quiet hellbender.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved; then
             echo "::error::Package.resolved has uncommitted changes after resolution. Commit the updated Package.resolved."
-            git diff birch.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
+            git diff hellbender.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
             exit 1
           fi
 
       - name: Build
         env:
-          scheme: birch
-          file_to_build: birch.xcodeproj
+          scheme: hellbender
+          file_to_build: hellbender.xcodeproj
           filetype_parameter: project
         run: |
           xcodebuild clean build analyze -scheme "$scheme" -"$filetype_parameter" "$file_to_build" CODE_SIGNING_ALLOWED=NO | xcpretty && exit ${PIPESTATUS[0]}

.github/workflows/Xcode-unit-tests.yml

@@ -17,4 +17,4 @@ jobs:
 
       - name: Run Unit Tests
         run: |
-          xcodebuild test -project birch.xcodeproj -scheme birch -destination 'platform=iOS Simulator,name=iPhone 17 Pro' -only-testing:birchTests -parallel-testing-enabled NO CODE_SIGNING_ALLOWED=NO | xcpretty && exit ${PIPESTATUS[0]}
+          xcodebuild test -project hellbender.xcodeproj -scheme hellbender -destination 'platform=iOS Simulator,name=iPhone 17 Pro' -only-testing:hellbenderTests -parallel-testing-enabled NO CODE_SIGNING_ALLOWED=NO | xcpretty && exit ${PIPESTATUS[0]}

.github/workflows/reproducible-build-check.yml

@@ -23,12 +23,12 @@ jobs:
 
       - name: Build 1
         run: |
-          DERIVED_DATA="/tmp/birch-build-1"
+          DERIVED_DATA="/tmp/hellbender-build-1"
           rm -rf "$DERIVED_DATA"
           xcodebuild archive \
-            -scheme birch \
-            -project birch.xcodeproj \
-            -archivePath "$DERIVED_DATA/birch.xcarchive" \
+            -scheme hellbender \
+            -project hellbender.xcodeproj \
+            -archivePath "$DERIVED_DATA/hellbender.xcarchive" \
             -derivedDataPath "$DERIVED_DATA" \
             -configuration Release \
             CODE_SIGNING_ALLOWED=NO \
@@ -37,12 +37,12 @@ jobs:
 
       - name: Build 2
         run: |
-          DERIVED_DATA="/tmp/birch-build-2"
+          DERIVED_DATA="/tmp/hellbender-build-2"
           rm -rf "$DERIVED_DATA"
           xcodebuild archive \
-            -scheme birch \
-            -project birch.xcodeproj \
-            -archivePath "$DERIVED_DATA/birch.xcarchive" \
+            -scheme hellbender \
+            -project hellbender.xcodeproj \
+            -archivePath "$DERIVED_DATA/hellbender.xcarchive" \
             -derivedDataPath "$DERIVED_DATA" \
             -configuration Release \
             CODE_SIGNING_ALLOWED=NO \
@@ -51,13 +51,13 @@ jobs:
 
       - name: Normalize both builds
         run: |
-          APP1="/tmp/birch-build-1/birch.xcarchive/Products/Applications/birch.app"
-          APP2="/tmp/birch-build-2/birch.xcarchive/Products/Applications/birch.app"
+          APP1="/tmp/hellbender-build-1/hellbender.xcarchive/Products/Applications/hellbender.app"
+          APP2="/tmp/hellbender-build-2/hellbender.xcarchive/Products/Applications/hellbender.app"
           ./scripts/normalize-app.sh "$APP1"
           ./scripts/normalize-app.sh "$APP2"
 
       - name: Compare builds
         run: |
-          APP1="/tmp/birch-build-1/birch.xcarchive/Products/Applications/birch.app"
-          APP2="/tmp/birch-build-2/birch.xcarchive/Products/Applications/birch.app"
+          APP1="/tmp/hellbender-build-1/hellbender.xcarchive/Products/Applications/hellbender.app"
+          APP2="/tmp/hellbender-build-2/hellbender.xcarchive/Products/Applications/hellbender.app"
           ./scripts/compare-builds.sh "$APP1" "$APP2"

Config/Hellbender.xcconfig

@@ -1,14 +1,12 @@
-// Birch.xcconfig — Target-level settings for the birch app target
+// Hellbender.xcconfig — Target-level settings for the hellbender app target
 
 ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon
-ASSETCATALOG_COMPILER_ALTERNATE_APPICON_NAMES = AppIcon-Dark
-ASSETCATALOG_COMPILER_INCLUDE_ALL_APPICON_ASSETS = YES
 ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor
 CODE_SIGN_STYLE = Automatic
 CURRENT_PROJECT_VERSION = 23
-DEVELOPMENT_ASSET_PATHS = "birch/Preview Content"
+DEVELOPMENT_ASSET_PATHS = "hellbender/Preview Content"
 GENERATE_INFOPLIST_FILE = NO
-INFOPLIST_FILE = birch/Info.plist
+INFOPLIST_FILE = hellbender/Info.plist
 IPHONEOS_DEPLOYMENT_TARGET = 18.6
 LD_RUNPATH_SEARCH_PATHS = $(inherited) @executable_path/Frameworks
 MARKETING_VERSION = 0.1.2

README.md

@@ -1,29 +1,24 @@
 <p align="center">
-  <img src="https://birchwallet.app/assets/AppIcon-og.png" alt="Birch" width="128" height="128" style="border-radius: 24px;" />
+  <img src="https://hellbenderwallet.com/assets/AppIcon-og.png" alt="Hellbender" width="128" height="128" style="border-radius: 24px;" />
 </p>
 
-<h1 align="center">Birch</h1>
+<h1 align="center">Hellbender</h1>
 
 <p align="center">
   <em>Travel to your private keys and leave your laptop at home.</em>
 </p>
 
 <p align="center">
-  <img src="https://birchwallet.app/assets/screenshots/welcome.png" alt="Welcome" width="150" />
-  <img src="https://birchwallet.app/assets/screenshots/wallet-setup.png" alt="Setup Choice" width="150" />
-  <img src="https://birchwallet.app/assets/screenshots/multisig-config.png" alt="New Wallet Multisig Config" width="150" />
-  <img src="https://birchwallet.app/assets/screenshots/cosigner-import.png" alt="Cosigner Import" width="150" />
-  <img src="https://birchwallet.app/assets/screenshots/verify-wallet-top.png" alt="Verify Wallet" width="150" />
-  <img src="https://birchwallet.app/assets/screenshots/verify-wallet-backup.png" alt="Backup PDF/QR" width="150" />
-  <img src="https://birchwallet.app/assets/screenshots/transactions.png" alt="Transactions" width="150" />
-  <img src="https://birchwallet.app/assets/screenshots/send.png" alt="Send" width="150" />
-  <img src="https://birchwallet.app/assets/screenshots/receive.png" alt="Receive" width="150" />
-  <img src="https://birchwallet.app/assets/screenshots/utxos.png" alt="UTXO" width="150" />
+  <img src="https://hellbenderwallet.com/assets/screenshots/welcome.png" alt="Welcome" width="150" />
+  <img src="https://hellbenderwallet.com/assets/screenshots/transactions.png" alt="Transactions" width="150" />
+  <img src="https://hellbenderwallet.com/assets/screenshots/multisig-config.png" alt="Multisig Config" width="150" />
+  <img src="https://hellbenderwallet.com/assets/screenshots/import-descriptor.png" alt="Import Descriptor" width="150" />
+  <img src="https://hellbenderwallet.com/assets/screenshots/review-wallet.png" alt="Review Wallet" width="150" />
 </p>
 
 ---
 
-Birch is an iOS Bitcoin multisig coordinator written in Swift. It operates as a **watch-only wallet** — private keys never touch your phone. Coordinate signing across air-gapped hardware wallets using animated QR codes, bringing cold storage security with mobile convenience.
+Hellbender is an iOS Bitcoin multisig coordinator written in Swift. It operates as a **watch-only wallet** — private keys never touch your phone. Coordinate signing across air-gapped hardware wallets using animated QR codes, bringing cold storage security with mobile convenience.
 
 ## Features
 
@@ -65,7 +60,7 @@ All dependencies are managed via Swift Package Manager and resolve automatically
    git clone https://github.com/newtonick/hellbender-wallet.git
    cd hellbender-wallet
    ```
-2. Open `birch.xcodeproj` in Xcode
+2. Open `hellbender.xcodeproj` in Xcode
 3. SPM dependencies resolve automatically on first open
 4. Build and run on a simulator or device
 
@@ -77,7 +72,7 @@ GitHub Actions runs `xcodebuild clean build analyze` on every push and pull requ
 
 ### Reproducible Builds
 
-Birch supports **functionally equivalent** reproducible builds. Given the same source code and Xcode version, two independent builds will produce the same compiled logic after normalization. Certain metadata bytes (Mach-O UUIDs, timestamps, build-machine identifiers) are expected to differ and are zeroed by the normalization step.
+Hellbender supports **functionally equivalent** reproducible builds. Given the same source code and Xcode version, two independent builds will produce the same compiled logic after normalization. Certain metadata bytes (Mach-O UUIDs, timestamps, build-machine identifiers) are expected to differ and are zeroed by the normalization step.
 
 **What IS reproducible** (after normalization): all code-bearing sections, resources, and application logic.
 
@@ -94,7 +89,7 @@ Birch supports **functionally equivalent** reproducible builds. Given the same s
 ./scripts/build-release.sh
 ```
 
-This creates an unsigned archive at `/tmp/birch-build/birch.xcarchive`.
+This creates an unsigned archive at `/tmp/hellbender-build/hellbender.xcarchive`.
 
 #### Verifying two builds
 
@@ -111,7 +106,7 @@ The comparison exits 0 if the builds are functionally equivalent, 1 if code diff
 
 ## Generating Screenshots
 
-Birch uses [`fastlane snapshot`](https://docs.fastlane.tools/actions/snapshot/) to generate marketing and App Store screenshots. A single UI test walks the app from Welcome through the main tabs, capturing every major screen on each configured device in both dark and light mode.
+Hellbender uses [`fastlane snapshot`](https://docs.fastlane.tools/actions/snapshot/) to generate marketing and App Store screenshots. A single UI test walks the app from Welcome through the main tabs, capturing every major screen on each configured device in both dark and light mode.
 
 ### One-time setup
 
@@ -188,7 +183,7 @@ fastlane/screenshots/
 
 ### How it works
 
-- [`birchUITests/ScreenshotTests.swift`](birchUITests/ScreenshotTests.swift) is a dedicated XCUITest that walks the app. It reuses the existing `-UITesting` launch argument (defined in `birch/birchApp.swift`), which wipes `UserDefaults`/keychain and uses an in-memory SwiftData store so every run starts from a deterministic Welcome screen.
+- [`hellbenderUITests/ScreenshotTests.swift`](hellbenderUITests/ScreenshotTests.swift) is a dedicated XCUITest that walks the app. It reuses the existing `-UITesting` launch argument (defined in `hellbender/hellbenderApp.swift`), which wipes `UserDefaults`/keychain and uses an in-memory SwiftData store so every run starts from a deterministic Welcome screen.
 - The test imports a real testnet4 1-of-2 `wsh(sortedmulti(...))` descriptor with live history, waits for Electrum sync, then visits each screen.
 - Dark/light mode is driven by the simulator's OS appearance (`xcrun simctl ui ... appearance`). The app's `RootView` follows the OS when the theme is set to `.system`, which it is by default after the `-UITesting` wipe, so no app-side toggle is required.
 - The device matrix, scheme, status bar override, and other `snapshot` options live in [`fastlane/Snapfile`](fastlane/Snapfile). Device destinations (simulator OS version), the frameit pass, and the custom 13 mini ImageMagick composite all live in [`fastlane/Fastfile`](fastlane/Fastfile).
@@ -196,14 +191,14 @@ fastlane/screenshots/
 ### Customizing
 
 - **Add/remove devices:** edit both the `devices([...])` array in `fastlane/Snapfile` and the `DEVICES` hash in `fastlane/Fastfile`.
-- **Change which screens are captured:** edit `testScreenshotTour` in `birchUITests/ScreenshotTests.swift` and add or remove `snapshot("NN-Name")` calls.
+- **Change which screens are captured:** edit `testScreenshotTour` in `hellbenderUITests/ScreenshotTests.swift` and add or remove `snapshot("NN-Name")` calls.
 - **Skip framing:** remove the `frameit(...)` lines and the ImageMagick composite block (steps 4–7) from `fastlane/Fastfile` if you only need the bare PNGs.
 
 > **Known workaround** (contained in `fastlane/Fastfile`): `frameit` gem 2.232.2's bundled iPhone 13 Mini frame PNG has a ~3-pixel placement-offset bug that leaves a visible edge gap, so 13 mini is composited directly with ImageMagick instead. iPhone 16/17 device support is patched in via `scripts/patch-frameit.rb` (see setup step 4 above).
 
 ## Links
 
-- **Website**: [birchwallet.app](https://birchwallet.app)
+- **Website**: [hellbenderwallet.com](https://hellbenderwallet.com)
 - **TestFlight Beta**: [Join the beta](https://testflight.apple.com/join/PuHVwJDJ)
 - **Author**: [newtonick](https://github.com/newtonick/hellbender-wallet/)
 
@@ -211,5 +206,5 @@ fastlane/screenshots/
 
 MIT License — see [LICENSE](LICENSE) for details.
 
-Birch's dependencies use permissive licenses compatible with MIT:
+Hellbender's dependencies use permissive licenses compatible with MIT:
 bdk-swift (MIT/Apache-2.0), URKit (BSD-2-Clause-Patent), URUI (BSD-2-Clause-Patent), Bbqr (Apache-2.0).

birch/Assets.xcassets/AppIcon-Dark.appiconset/Contents.json

@@ -1,14 +0,0 @@
-{
-  "images" : [
-    {
-      "filename" : "AppIcon.png",
-      "idiom" : "universal",
-      "platform" : "ios",
-      "size" : "1024x1024"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  }
-}

birch/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -1,14 +0,0 @@
-{
-  "images" : [
-    {
-      "filename" : "AppIcon.png",
-      "idiom" : "universal",
-      "platform" : "ios",
-      "size" : "1024x1024"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  }
-}

birch/Assets.xcassets/AppIconPreviewLight.imageset/Contents.json

@@ -1,21 +0,0 @@
-{
-  "images" : [
-    {
-      "filename" : "AppIcon.png",
-      "idiom" : "universal",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "universal",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "universal",
-      "scale" : "3x"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  }
-}

birchTests/AppLockViewModelTests.swift

@@ -1,388 +0,0 @@
-@testable import birch
-import CryptoKit
-import Foundation
-import Testing
-
-@Suite("AppLockViewModel")
-@MainActor
-struct AppLockViewModelTests {
-  init() {
-    MockKeychainHelper.reset()
-  }
-
-  private func makeVM() -> AppLockViewModel {
-    AppLockViewModel(keychain: MockKeychainHelper.self)
-  }
-
-  private func hashPIN(_ pin: String) -> Data {
-    Data(SHA256.hash(data: Data(pin.utf8)))
-  }
-
-  private func seedPIN(_ pin: String) {
-    MockKeychainHelper.save(hashPIN(pin), forKey: Constants.keychainPINHashKey)
-    MockKeychainHelper.save(Data("\(pin.count)".utf8), forKey: Constants.keychainPINLengthKey)
-  }
-
-  private func seedFailedAttempts(_ count: Int) {
-    MockKeychainHelper.save(Data("\(count)".utf8), forKey: Constants.keychainFailedAttemptsKey)
-  }
-
-  private func seedLockoutExpiry(_ date: Date) {
-    MockKeychainHelper.save(Data("\(date.timeIntervalSince1970)".utf8), forKey: Constants.keychainLockoutExpiryKey)
-  }
-
-  // MARK: - Initialization
-
-  @Test func initWithNoPIN_hasPINIsFalse() {
-    let vm = makeVM()
-    #expect(vm.hasPIN == false)
-    #expect(vm.storedPINLength == 6)
-  }
-
-  @Test func initWithExistingPIN_hasPINIsTrue() {
-    seedPIN("1234")
-    let vm = makeVM()
-    #expect(vm.hasPIN == true)
-    #expect(vm.storedPINLength == 4)
-  }
-
-  @Test func initWithPersistedFailedAttempts_restoresCount() {
-    seedFailedAttempts(5)
-    let vm = makeVM()
-    #expect(vm.failedAttempts == 5)
-  }
-
-  @Test func initWithExpiredLockout_clearsLockout() {
-    seedLockoutExpiry(Date().addingTimeInterval(-100))
-    let vm = makeVM()
-    #expect(vm.lockoutExpiry == nil)
-    #expect(vm.isLockedOut == false)
-  }
-
-  @Test func initWithActiveLockout_restoresLockout() {
-    seedLockoutExpiry(Date().addingTimeInterval(300))
-    let vm = makeVM()
-    #expect(vm.lockoutExpiry != nil)
-    #expect(vm.isLockedOut == true)
-  }
-
-  // MARK: - PIN Management
-
-  @Test func setPIN_storesHashAndLength() {
-    let vm = makeVM()
-    vm.setPIN("1234")
-    #expect(vm.hasPIN == true)
-    #expect(vm.storedPINLength == 4)
-    #expect(MockKeychainHelper.load(forKey: Constants.keychainPINHashKey) == hashPIN("1234"))
-    #expect(MockKeychainHelper.load(forKey: Constants.keychainPINLengthKey) == Data("4".utf8))
-  }
-
-  @Test func setPIN_resetsFailedAttempts() {
-    let vm = makeVM()
-    vm.setPIN("9999")
-    _ = vm.verifyPIN("0000")
-    _ = vm.verifyPIN("0000")
-    #expect(vm.failedAttempts == 2)
-    vm.setPIN("5678")
-    #expect(vm.failedAttempts == 0)
-  }
-
-  @Test func removePIN_clearsKeychainAndState() {
-    let vm = makeVM()
-    vm.setPIN("1234")
-    #expect(vm.hasPIN == true)
-    vm.removePIN()
-    #expect(vm.hasPIN == false)
-    #expect(vm.storedPINLength == 6)
-    #expect(MockKeychainHelper.load(forKey: Constants.keychainPINHashKey) == nil)
-    #expect(MockKeychainHelper.load(forKey: Constants.keychainPINLengthKey) == nil)
-    #expect(MockKeychainHelper.load(forKey: Constants.keychainFailedAttemptsKey) == nil)
-    #expect(MockKeychainHelper.load(forKey: Constants.keychainLockoutExpiryKey) == nil)
-  }
-
-  @Test func setPIN_removePIN_setPIN_togglesCorrectly() {
-    let vm = makeVM()
-    vm.setPIN("1234")
-    #expect(vm.hasPIN == true)
-    #expect(vm.storedPINLength == 4)
-    vm.removePIN()
-    #expect(vm.hasPIN == false)
-    #expect(vm.storedPINLength == 6)
-    vm.setPIN("567890")
-    #expect(vm.hasPIN == true)
-    #expect(vm.storedPINLength == 6)
-  }
-
-  // MARK: - PIN Verification
-
-  @Test func verifyPIN_correctPIN_returnsTrue() {
-    let vm = makeVM()
-    vm.setPIN("5678")
-    vm.needsPINEntry = true
-    let result = vm.verifyPIN("5678")
-    #expect(result == true)
-    #expect(vm.isLocked == false)
-    #expect(vm.needsPINEntry == false)
-    #expect(vm.failedAttempts == 0)
-  }
-
-  @Test func verifyPIN_wrongPIN_returnsFalse() {
-    let vm = makeVM()
-    vm.setPIN("5678")
-    let result = vm.verifyPIN("0000")
-    #expect(result == false)
-    #expect(vm.failedAttempts == 1)
-  }
-
-  @Test func verifyPIN_noStoredPIN_returnsFalse() {
-    let vm = makeVM()
-    let result = vm.verifyPIN("1234")
-    #expect(result == false)
-  }
-
-  @Test func verifyPIN_correctPIN_resetsFailedAttempts() {
-    let vm = makeVM()
-    vm.setPIN("5678")
-    _ = vm.verifyPIN("0000")
-    _ = vm.verifyPIN("0000")
-    _ = vm.verifyPIN("0000")
-    #expect(vm.failedAttempts == 3)
-    let result = vm.verifyPIN("5678")
-    #expect(result == true)
-    #expect(vm.failedAttempts == 0)
-    #expect(vm.lockoutExpiry == nil)
-  }
-
-  @Test func verifyPIN_whileLockedOut_returnsFalse() {
-    let vm = makeVM()
-    vm.setPIN("5678")
-    _ = vm.verifyPIN("0000")
-    _ = vm.verifyPIN("0000")
-    _ = vm.verifyPIN("0000")
-    _ = vm.verifyPIN("0000") // 4th attempt → 60s lockout
-    #expect(vm.isLockedOut == true)
-    let result = vm.verifyPIN("5678")
-    #expect(result == false)
-    #expect(vm.pinError.contains("Try again"))
-  }
-
-  // MARK: - Lockout Progression
-
-  @Test func lockout_noLockoutFor1to3Failures() {
-    let vm = makeVM()
-    vm.setPIN("5678")
-    _ = vm.verifyPIN("0000")
-    #expect(vm.isLockedOut == false)
-    _ = vm.verifyPIN("0000")
-    #expect(vm.isLockedOut == false)
-    _ = vm.verifyPIN("0000")
-    #expect(vm.isLockedOut == false)
-  }
-
-  @Test func lockout_60sAfter4Failures() throws {
-    let vm = makeVM()
-    vm.setPIN("5678")
-    for _ in 1 ... 4 {
-      _ = vm.verifyPIN("0000")
-    }
-    #expect(vm.isLockedOut == true)
-    #expect(vm.failedAttempts == 4)
-    let expiry = try #require(vm.lockoutExpiry)
-    let delay = expiry.timeIntervalSinceNow
-    #expect(delay > 55 && delay <= 61)
-  }
-
-  @Test func lockout_10mAfter5Failures() throws {
-    seedPIN("5678")
-    seedFailedAttempts(4)
-    let vm = makeVM()
-    _ = vm.verifyPIN("0000")
-    #expect(vm.failedAttempts == 5)
-    let expiry = try #require(vm.lockoutExpiry)
-    let delay = expiry.timeIntervalSinceNow
-    #expect(delay > 595 && delay <= 601)
-  }
-
-  @Test func lockout_90mAfter6Failures() throws {
-    seedPIN("5678")
-    seedFailedAttempts(5)
-    let vm = makeVM()
-    _ = vm.verifyPIN("0000")
-    #expect(vm.failedAttempts == 6)
-    let expiry = try #require(vm.lockoutExpiry)
-    let delay = expiry.timeIntervalSinceNow
-    #expect(delay > 5395 && delay <= 5401)
-  }
-
-  @Test func lockout_24hAfter7Failures() throws {
-    seedPIN("5678")
-    seedFailedAttempts(6)
-    let vm = makeVM()
-    _ = vm.verifyPIN("0000")
-    #expect(vm.failedAttempts == 7)
-    let expiry = try #require(vm.lockoutExpiry)
-    let delay = expiry.timeIntervalSinceNow
-    #expect(delay > 86395 && delay <= 86401)
-  }
-
-  @Test func lockout_persistsSurvivesReInit() {
-    let vm = makeVM()
-    vm.setPIN("5678")
-    for _ in 1 ... 4 {
-      _ = vm.verifyPIN("0000")
-    }
-    #expect(vm.isLockedOut == true)
-
-    let vm2 = makeVM()
-    #expect(vm2.failedAttempts == 4)
-    #expect(vm2.isLockedOut == true)
-  }
-
-  @Test func failedAttempts10_reachesWipeThreshold() {
-    seedPIN("5678")
-    seedFailedAttempts(9)
-    let vm = makeVM()
-    _ = vm.verifyPIN("0000")
-    #expect(vm.failedAttempts >= 10)
-    #expect(vm.pinError == "Too many attempts")
-  }
-
-  // MARK: - Background / Foreground
-
-  @Test func handleBackground_calledTwice_noOverwrite() {
-    let vm = makeVM()
-    vm.isLocked = false
-    let earlyTime = Date().addingTimeInterval(-120)
-    vm.handleBackground(at: earlyTime)
-    vm.handleBackground(at: Date())
-    vm.handleForeground(timeout: 60)
-    #expect(vm.isLocked == true)
-  }
-
-  @Test func handleForeground_underTimeout_staysUnlocked() {
-    let vm = makeVM()
-    vm.isLocked = false
-    vm.handleBackground(at: Date())
-    vm.handleForeground(timeout: 60)
-    #expect(vm.isLocked == false)
-  }
-
-  @Test func handleForeground_overTimeout_reLocks() {
-    let vm = makeVM()
-    vm.isLocked = false
-    vm.handleBackground(at: Date().addingTimeInterval(-120))
-    vm.handleForeground(timeout: 60)
-    #expect(vm.isLocked == true)
-  }
-
-  @Test func handleForeground_rereadsPINState() {
-    let vm = makeVM()
-    #expect(vm.hasPIN == false)
-    seedPIN("1234")
-    vm.handleForeground(timeout: 60)
-    #expect(vm.hasPIN == true)
-    #expect(vm.storedPINLength == 4)
-  }
-
-  @Test func handleForeground_rereadsPINLength_afterRemoval() {
-    seedPIN("1234")
-    let vm = makeVM()
-    #expect(vm.hasPIN == true)
-    #expect(vm.storedPINLength == 4)
-    MockKeychainHelper.delete(forKey: Constants.keychainPINHashKey)
-    MockKeychainHelper.delete(forKey: Constants.keychainPINLengthKey)
-    vm.handleForeground(timeout: 60)
-    #expect(vm.hasPIN == false)
-    #expect(vm.storedPINLength == 6)
-  }
-
-  @Test func handleForeground_noPriorBackground_noRelock() {
-    let vm = makeVM()
-    vm.isLocked = false
-    vm.handleForeground(timeout: 60)
-    #expect(vm.isLocked == false)
-  }
-
-  // MARK: - Cross-Instance Sync
-
-  @Test func crossInstance_setPINOnOne_foregroundReadsOnOther() {
-    let vmA = makeVM()
-    let vmB = makeVM()
-    vmA.setPIN("1234")
-    #expect(vmA.hasPIN == true)
-    #expect(vmB.hasPIN == false)
-    vmB.handleForeground(timeout: 60)
-    #expect(vmB.hasPIN == true)
-    #expect(vmB.storedPINLength == 4)
-  }
-
-  @Test func crossInstance_removePINOnOne_foregroundReadsOnOther() {
-    seedPIN("5678")
-    let vmA = makeVM()
-    let vmB = makeVM()
-    #expect(vmA.hasPIN == true)
-    #expect(vmB.hasPIN == true)
-    vmA.removePIN()
-    #expect(vmA.hasPIN == false)
-    #expect(vmB.hasPIN == true)
-    vmB.handleForeground(timeout: 60)
-    #expect(vmB.hasPIN == false)
-    #expect(vmB.storedPINLength == 6)
-  }
-
-  @Test func crossInstance_setPIN_thenTimeout_showsCorrectPINLength() {
-    let vmSettings = makeVM()
-    let vmLock = makeVM()
-    vmLock.isLocked = false
-    vmSettings.setPIN("12345678")
-    #expect(vmLock.storedPINLength == 6)
-    vmLock.handleBackground(at: Date().addingTimeInterval(-120))
-    vmLock.handleForeground(timeout: 60)
-    #expect(vmLock.hasPIN == true)
-    #expect(vmLock.storedPINLength == 8)
-    #expect(vmLock.isLocked == true)
-  }
-
-  // MARK: - Lockout Text
-
-  @Test func lockoutRemainingText_noLockout_empty() {
-    let vm = makeVM()
-    #expect(vm.lockoutRemainingText == "")
-  }
-
-  @Test func lockoutRemainingText_showsSeconds() {
-    seedLockoutExpiry(Date().addingTimeInterval(30))
-    let vm = makeVM()
-    let text = vm.lockoutRemainingText
-    #expect(text.contains("30s") || text.contains("29s"))
-  }
-
-  @Test func lockoutRemainingText_showsMinutes() {
-    seedLockoutExpiry(Date().addingTimeInterval(300))
-    let vm = makeVM()
-    let text = vm.lockoutRemainingText
-    #expect(text.contains("5m") || text.contains("4m"))
-  }
-
-  @Test func lockoutRemainingText_showsHoursAndMinutes() {
-    seedLockoutExpiry(Date().addingTimeInterval(7260))
-    let vm = makeVM()
-    let text = vm.lockoutRemainingText
-    #expect(text.contains("2h"))
-  }
-
-  // MARK: - Face ID Retry State Reset
-
-  @Test func faceIDRetry_clearsState() {
-    let vm = makeVM()
-    vm.needsPINEntry = true
-    vm.pinInput = "12"
-    vm.pinError = "Incorrect PIN"
-    vm.needsPINEntry = false
-    vm.pinInput = ""
-    vm.pinError = ""
-    #expect(vm.needsPINEntry == false)
-    #expect(vm.pinInput == "")
-    #expect(vm.pinError == "")
-  }
-}

birchTests/Mocks/MockKeychainHelper.swift

@@ -1,28 +0,0 @@
-@testable import birch
-import Foundation
-
-final class MockKeychainHelper: KeychainStoring {
-  nonisolated(unsafe) static var store: [String: Data] = [:]
-
-  static func reset() {
-    store.removeAll()
-  }
-
-  @discardableResult
-  static func save(_ data: Data, forKey key: String) -> Bool {
-    store[key] = data
-    return true
-  }
-
-  static func load(forKey key: String) -> Data? {
-    store[key]
-  }
-
-  static func delete(forKey key: String) {
-    store.removeValue(forKey: key)
-  }
-
-  static func deleteAll() {
-    store.removeAll()
-  }
-}

fastlane/Fastfile

@@ -27,11 +27,11 @@ platform :ios do
     FileUtils.rm_rf(File.expand_path("screenshots/light", __dir__))
 
     # ── 1. Build for testing once ────────────────────────────────────────
-    # Produces birch.app, birchUITests-Runner.app, and the
+    # Produces hellbender.app, hellbenderUITests-Runner.app, and the
     # .xctestrun manifest that tells xcodebuild which apps to install.
     sh("xcodebuild build-for-testing " \
-       "-scheme birch " \
-       "-project ../birch.xcodeproj " \
+       "-scheme hellbender " \
+       "-project ../hellbender.xcodeproj " \
        "-destination 'generic/platform=iOS Simulator' " \
        "-derivedDataPath '#{DERIVED_DATA}' " \
        "-parallel-testing-enabled NO " \
@@ -133,14 +133,14 @@ platform :ios do
       FileUtils.mkdir_p(SCREENSHOT_SRC)
 
       # Run the test with the explicit xctestrun manifest.
-      # This installs all DependentProductPaths (including birch.app)
+      # This installs all DependentProductPaths (including hellbender.app)
       # automatically — works around the Xcode 26 bug where
       # `xcodebuild build test` / `test-without-building -scheme` fail to
       # install the host app.
       sh("xcodebuild test-without-building " \
          "-xctestrun '#{xctestrun_path}' " \
          "-destination '#{destination}' " \
-         "-only-testing:birchUITests/ScreenshotTests/testScreenshotTour " \
+         "-only-testing:hellbenderUITests/ScreenshotTests/testScreenshotTour " \
          "-parallel-testing-enabled NO") do |status|
         UI.error("Test failed on #{name} (#{mode} mode)") unless status.success?
       end

fastlane/Snapfile

@@ -10,11 +10,11 @@ devices([
 languages(["en-US"])
 
 # Xcode scheme that contains the UI test target.
-scheme("birch")
+scheme("hellbender")
 
 # Only run the screenshot walker, not the assertion-heavy setup test.
-test_target_name("birchUITests")
-only_testing(["birchUITests/ScreenshotTests/testScreenshotTour"])
+test_target_name("hellbenderUITests")
+only_testing(["hellbenderUITests/ScreenshotTests/testScreenshotTour"])
 
 # Output directory is overridden per invocation in the Fastfile so we can split
 # dark and light into sibling directories. This value is the default.
@@ -37,12 +37,12 @@ concurrent_simulators(false)
 # Fail fast — if one device fails, don't burn time on the rest.
 stop_after_first_error(true)
 
-# Launch arg read by birchApp.swift to wipe UserDefaults/keychain and
+# Launch arg read by hellbenderApp.swift to wipe UserDefaults/keychain and
 # use an in-memory SwiftData store. Every run starts at the Welcome screen.
 launch_arguments(["-UITesting"])
 
 # Use project-local derived data instead of fastlane's default /tmp path.
-# The temp path causes xcodebuild to skip installing birch.app on the
+# The temp path causes xcodebuild to skip installing hellbender.app on the
 # simulator (only the test runner gets installed), triggering
 # "FBSApplicationLibrary returned nil" failures.
 derived_data_path("./build/DerivedData")

hellbender.xcodeproj/project.pbxproj

@@ -20,54 +20,54 @@
 			containerPortal = 3C9ACE1C2F5DED94009B00D0 /* Project object */;
 			proxyType = 1;
 			remoteGlobalIDString = 3C9ACE232F5DED94009B00D0;
-			remoteInfo = birch;
+			remoteInfo = hellbender;
 		};
 		3C9ACE3F2F5DED95009B00D0 /* PBXContainerItemProxy */ = {
 			isa = PBXContainerItemProxy;
 			containerPortal = 3C9ACE1C2F5DED94009B00D0 /* Project object */;
 			proxyType = 1;
 			remoteGlobalIDString = 3C9ACE232F5DED94009B00D0;
-			remoteInfo = birch;
+			remoteInfo = hellbender;
 		};
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXFileReference section */
-		3C9ACE242F5DED94009B00D0 /* birch.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = birch.app; sourceTree = BUILT_PRODUCTS_DIR; };
-		3C9ACE342F5DED95009B00D0 /* birchTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = birchTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
-		3C9ACE3E2F5DED95009B00D0 /* birchUITests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = birchUITests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		3C9ACE242F5DED94009B00D0 /* hellbender.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = hellbender.app; sourceTree = BUILT_PRODUCTS_DIR; };
+		3C9ACE342F5DED95009B00D0 /* hellbenderTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = hellbenderTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		3C9ACE3E2F5DED95009B00D0 /* hellbenderUITests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = hellbenderUITests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		CC0000010000000000000001 /* Base.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Base.xcconfig; sourceTree = "<group>"; };
 		CC0000010000000000000002 /* Debug.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Debug.xcconfig; sourceTree = "<group>"; };
 		CC0000010000000000000003 /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Release.xcconfig; sourceTree = "<group>"; };
-		CC0000010000000000000004 /* Birch.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Birch.xcconfig; sourceTree = "<group>"; };
+		CC0000010000000000000004 /* Hellbender.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Hellbender.xcconfig; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFileSystemSynchronizedBuildFileExceptionSet section */
-		CC0000010000000000000006 /* Exceptions for "birch" folder in "birch" target */ = {
+		CC0000010000000000000006 /* Exceptions for "hellbender" folder in "hellbender" target */ = {
 			isa = PBXFileSystemSynchronizedBuildFileExceptionSet;
 			membershipExceptions = (
 				Info.plist,
 			);
-			target = 3C9ACE232F5DED94009B00D0 /* birch */;
+			target = 3C9ACE232F5DED94009B00D0 /* hellbender */;
 		};
 /* End PBXFileSystemSynchronizedBuildFileExceptionSet section */
 
 /* Begin PBXFileSystemSynchronizedRootGroup section */
-		3C9ACE262F5DED94009B00D0 /* birch */ = {
+		3C9ACE262F5DED94009B00D0 /* hellbender */ = {
 			isa = PBXFileSystemSynchronizedRootGroup;
 			exceptions = (
-				CC0000010000000000000006 /* Exceptions for "birch" folder in "birch" target */,
+				CC0000010000000000000006 /* Exceptions for "hellbender" folder in "hellbender" target */,
 			);
-			path = birch;
+			path = hellbender;
 			sourceTree = "<group>";
 		};
-		3C9ACE372F5DED95009B00D0 /* birchTests */ = {
+		3C9ACE372F5DED95009B00D0 /* hellbenderTests */ = {
 			isa = PBXFileSystemSynchronizedRootGroup;
-			path = birchTests;
+			path = hellbenderTests;
 			sourceTree = "<group>";
 		};
-		3C9ACE412F5DED95009B00D0 /* birchUITests */ = {
+		3C9ACE412F5DED95009B00D0 /* hellbenderUITests */ = {
 			isa = PBXFileSystemSynchronizedRootGroup;
-			path = birchUITests;
+			path = hellbenderUITests;
 			sourceTree = "<group>";
 		};
 /* End PBXFileSystemSynchronizedRootGroup section */
@@ -106,9 +106,9 @@
 			isa = PBXGroup;
 			children = (
 				CC0000010000000000000005 /* Config */,
-				3C9ACE262F5DED94009B00D0 /* birch */,
-				3C9ACE372F5DED95009B00D0 /* birchTests */,
-				3C9ACE412F5DED95009B00D0 /* birchUITests */,
+				3C9ACE262F5DED94009B00D0 /* hellbender */,
+				3C9ACE372F5DED95009B00D0 /* hellbenderTests */,
+				3C9ACE412F5DED95009B00D0 /* hellbenderUITests */,
 				3C9ACE252F5DED94009B00D0 /* Products */,
 			);
 			sourceTree = "<group>";
@@ -116,9 +116,9 @@
 		3C9ACE252F5DED94009B00D0 /* Products */ = {
 			isa = PBXGroup;
 			children = (
-				3C9ACE242F5DED94009B00D0 /* birch.app */,
-				3C9ACE342F5DED95009B00D0 /* birchTests.xctest */,
-				3C9ACE3E2F5DED95009B00D0 /* birchUITests.xctest */,
+				3C9ACE242F5DED94009B00D0 /* hellbender.app */,
+				3C9ACE342F5DED95009B00D0 /* hellbenderTests.xctest */,
+				3C9ACE3E2F5DED95009B00D0 /* hellbenderUITests.xctest */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -128,7 +128,7 @@
 			children = (
 				CC0000010000000000000001 /* Base.xcconfig */,
 				CC0000010000000000000002 /* Debug.xcconfig */,
-				CC0000010000000000000004 /* Birch.xcconfig */,
+				CC0000010000000000000004 /* Hellbender.xcconfig */,
 				CC0000010000000000000003 /* Release.xcconfig */,
 			);
 			path = Config;
@@ -137,9 +137,9 @@
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
-		3C9ACE232F5DED94009B00D0 /* birch */ = {
+		3C9ACE232F5DED94009B00D0 /* hellbender */ = {
 			isa = PBXNativeTarget;
-			buildConfigurationList = 3C9ACE482F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "birch" */;
+			buildConfigurationList = 3C9ACE482F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "hellbender" */;
 			buildPhases = (
 				3C9ACE202F5DED94009B00D0 /* Sources */,
 				3C9ACE212F5DED94009B00D0 /* Frameworks */,
@@ -150,9 +150,9 @@
 			dependencies = (
 			);
 			fileSystemSynchronizedGroups = (
-				3C9ACE262F5DED94009B00D0 /* birch */,
+				3C9ACE262F5DED94009B00D0 /* hellbender */,
 			);
-			name = birch;
+			name = hellbender;
 			packageProductDependencies = (
 				AA00000500000000000000D0 /* URKit */,
 				AA00000800000000000000D0 /* URUI */,
@@ -160,13 +160,13 @@
 				3C1E1C452F7B0D99002FDAE2 /* BitcoinDevKit */,
 				3C1E1FA42F7B5F63002FDAE2 /* BitcoinDevKit */,
 			);
-			productName = birch;
-			productReference = 3C9ACE242F5DED94009B00D0 /* birch.app */;
+			productName = hellbender;
+			productReference = 3C9ACE242F5DED94009B00D0 /* hellbender.app */;
 			productType = "com.apple.product-type.application";
 		};
-		3C9ACE332F5DED95009B00D0 /* birchTests */ = {
+		3C9ACE332F5DED95009B00D0 /* hellbenderTests */ = {
 			isa = PBXNativeTarget;
-			buildConfigurationList = 3C9ACE4B2F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "birchTests" */;
+			buildConfigurationList = 3C9ACE4B2F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "hellbenderTests" */;
 			buildPhases = (
 				3C9ACE302F5DED95009B00D0 /* Sources */,
 				3C9ACE312F5DED95009B00D0 /* Frameworks */,
@@ -178,18 +178,18 @@
 				3C9ACE362F5DED95009B00D0 /* PBXTargetDependency */,
 			);
 			fileSystemSynchronizedGroups = (
-				3C9ACE372F5DED95009B00D0 /* birchTests */,
+				3C9ACE372F5DED95009B00D0 /* hellbenderTests */,
 			);
-			name = birchTests;
+			name = hellbenderTests;
 			packageProductDependencies = (
 			);
-			productName = birchTests;
-			productReference = 3C9ACE342F5DED95009B00D0 /* birchTests.xctest */;
+			productName = hellbenderTests;
+			productReference = 3C9ACE342F5DED95009B00D0 /* hellbenderTests.xctest */;
 			productType = "com.apple.product-type.bundle.unit-test";
 		};
-		3C9ACE3D2F5DED95009B00D0 /* birchUITests */ = {
+		3C9ACE3D2F5DED95009B00D0 /* hellbenderUITests */ = {
 			isa = PBXNativeTarget;
-			buildConfigurationList = 3C9ACE4E2F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "birchUITests" */;
+			buildConfigurationList = 3C9ACE4E2F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "hellbenderUITests" */;
 			buildPhases = (
 				3C9ACE3A2F5DED95009B00D0 /* Sources */,
 				3C9ACE3B2F5DED95009B00D0 /* Frameworks */,
@@ -201,13 +201,13 @@
 				3C9ACE402F5DED95009B00D0 /* PBXTargetDependency */,
 			);
 			fileSystemSynchronizedGroups = (
-				3C9ACE412F5DED95009B00D0 /* birchUITests */,
+				3C9ACE412F5DED95009B00D0 /* hellbenderUITests */,
 			);
-			name = birchUITests;
+			name = hellbenderUITests;
 			packageProductDependencies = (
 			);
-			productName = birchUITests;
-			productReference = 3C9ACE3E2F5DED95009B00D0 /* birchUITests.xctest */;
+			productName = hellbenderUITests;
+			productReference = 3C9ACE3E2F5DED95009B00D0 /* hellbenderUITests.xctest */;
 			productType = "com.apple.product-type.bundle.ui-testing";
 		};
 /* End PBXNativeTarget section */
@@ -233,7 +233,7 @@
 					};
 				};
 			};
-			buildConfigurationList = 3C9ACE1F2F5DED94009B00D0 /* Build configuration list for PBXProject "birch" */;
+			buildConfigurationList = 3C9ACE1F2F5DED94009B00D0 /* Build configuration list for PBXProject "hellbender" */;
 			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
@@ -253,9 +253,9 @@
 			projectDirPath = "";
 			projectRoot = "";
 			targets = (
-				3C9ACE232F5DED94009B00D0 /* birch */,
-				3C9ACE332F5DED95009B00D0 /* birchTests */,
-				3C9ACE3D2F5DED95009B00D0 /* birchUITests */,
+				3C9ACE232F5DED94009B00D0 /* hellbender */,
+				3C9ACE332F5DED95009B00D0 /* hellbenderTests */,
+				3C9ACE3D2F5DED95009B00D0 /* hellbenderUITests */,
 			);
 		};
 /* End PBXProject section */
@@ -311,12 +311,12 @@
 /* Begin PBXTargetDependency section */
 		3C9ACE362F5DED95009B00D0 /* PBXTargetDependency */ = {
 			isa = PBXTargetDependency;
-			target = 3C9ACE232F5DED94009B00D0 /* birch */;
+			target = 3C9ACE232F5DED94009B00D0 /* hellbender */;
 			targetProxy = 3C9ACE352F5DED95009B00D0 /* PBXContainerItemProxy */;
 		};
 		3C9ACE402F5DED95009B00D0 /* PBXTargetDependency */ = {
 			isa = PBXTargetDependency;
-			target = 3C9ACE232F5DED94009B00D0 /* birch */;
+			target = 3C9ACE232F5DED94009B00D0 /* hellbender */;
 			targetProxy = 3C9ACE3F2F5DED95009B00D0 /* PBXContainerItemProxy */;
 		};
 /* End PBXTargetDependency section */
@@ -326,7 +326,6 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = CC0000010000000000000002 /* Debug.xcconfig */;
 			buildSettings = {
-				DEVELOPMENT_TEAM = ZW85AH743B;
 			};
 			name = Debug;
 		};
@@ -334,25 +333,22 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = CC0000010000000000000003 /* Release.xcconfig */;
 			buildSettings = {
-				DEVELOPMENT_TEAM = ZW85AH743B;
 			};
 			name = Release;
 		};
 		3C9ACE492F5DED95009B00D0 /* Debug */ = {
 			isa = XCBuildConfiguration;
-			baseConfigurationReference = CC0000010000000000000004 /* Birch.xcconfig */;
+			baseConfigurationReference = CC0000010000000000000004 /* Hellbender.xcconfig */;
 			buildSettings = {
-				CURRENT_PROJECT_VERSION = 26;
-				MARKETING_VERSION = 0.2.0;
+				CURRENT_PROJECT_VERSION = 24;
 			};
 			name = Debug;
 		};
 		3C9ACE4A2F5DED95009B00D0 /* Release */ = {
 			isa = XCBuildConfiguration;
-			baseConfigurationReference = CC0000010000000000000004 /* Birch.xcconfig */;
+			baseConfigurationReference = CC0000010000000000000004 /* Hellbender.xcconfig */;
 			buildSettings = {
-				CURRENT_PROJECT_VERSION = 26;
-				MARKETING_VERSION = 0.2.0;
+				CURRENT_PROJECT_VERSION = 24;
 			};
 			name = Release;
 		};
@@ -370,7 +366,7 @@
 				SWIFT_EMIT_LOC_STRINGS = NO;
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/birch.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/birch";
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/hellbender.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/hellbender";
 			};
 			name = Debug;
 		};
@@ -388,7 +384,7 @@
 				SWIFT_EMIT_LOC_STRINGS = NO;
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/birch.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/birch";
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/hellbender.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/hellbender";
 			};
 			name = Release;
 		};
@@ -404,7 +400,7 @@
 				SWIFT_EMIT_LOC_STRINGS = NO;
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				TEST_TARGET_NAME = birch;
+				TEST_TARGET_NAME = hellbender;
 			};
 			name = Debug;
 		};
@@ -420,14 +416,14 @@
 				SWIFT_EMIT_LOC_STRINGS = NO;
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				TEST_TARGET_NAME = birch;
+				TEST_TARGET_NAME = hellbender;
 			};
 			name = Release;
 		};
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
-		3C9ACE1F2F5DED94009B00D0 /* Build configuration list for PBXProject "birch" */ = {
+		3C9ACE1F2F5DED94009B00D0 /* Build configuration list for PBXProject "hellbender" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
 				3C9ACE462F5DED95009B00D0 /* Debug */,
@@ -436,7 +432,7 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		3C9ACE482F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "birch" */ = {
+		3C9ACE482F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "hellbender" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
 				3C9ACE492F5DED95009B00D0 /* Debug */,
@@ -445,7 +441,7 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		3C9ACE4B2F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "birchTests" */ = {
+		3C9ACE4B2F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "hellbenderTests" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
 				3C9ACE4C2F5DED95009B00D0 /* Debug */,
@@ -454,7 +450,7 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		3C9ACE4E2F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "birchUITests" */ = {
+		3C9ACE4E2F5DED95009B00D0 /* Build configuration list for PBXNativeTarget "hellbenderUITests" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
 				3C9ACE4F2F5DED95009B00D0 /* Debug */,

hellbender.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -0,0 +1,87 @@
+{
+  "originHash" : "11f3c5d73e6615e055e5b9f3671e6180f277a34f298c3f7c6935dcc8dd281089",
+  "pins" : [
+    {
+      "identity" : "bbqr-swift",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/bitcoinppl/bbqr-swift",
+      "state" : {
+        "revision" : "83b828077ecc4f5d2cf8889da5543a61b4a60a3c",
+        "version" : "0.3.1"
+      }
+    },
+    {
+      "identity" : "bcswiftdcbor",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/BlockchainCommons/BCSwiftDCBOR",
+      "state" : {
+        "revision" : "21efa67ada2f22a6c277e1961f1059bb376e9b1a",
+        "version" : "2.0.2"
+      }
+    },
+    {
+      "identity" : "bcswiftfloat16",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/blockchaincommons/BCSwiftFloat16",
+      "state" : {
+        "revision" : "a27f3935a7b1db715713eda67369b02feade2ded",
+        "version" : "2.0.0"
+      }
+    },
+    {
+      "identity" : "bcswifttags",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/BlockchainCommons/BCSwiftTags",
+      "state" : {
+        "revision" : "ced8d92c7cc53375cdf9806c59251fe0161f02ec",
+        "version" : "0.2.3"
+      }
+    },
+    {
+      "identity" : "bdk-swift",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/newtonick/bdk-swift",
+      "state" : {
+        "revision" : "4660bc83ea6088906edb090652d261e8ed4c09e3",
+        "version" : "2.3.1-ssl-patch"
+      }
+    },
+    {
+      "identity" : "swift-numberkit",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/objecthub/swift-numberkit.git",
+      "state" : {
+        "revision" : "33af3f9011e45dcd8ee696492d30dbcd5a8a67f3",
+        "version" : "2.6.0"
+      }
+    },
+    {
+      "identity" : "swiftsortedcollections",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/wolfmcnally/SwiftSortedCollections",
+      "state" : {
+        "revision" : "dd6c8e0eaef987e55a35c056d185144a7c71fc19",
+        "version" : "0.1.0"
+      }
+    },
+    {
+      "identity" : "urkit",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/BlockchainCommons/URKit",
+      "state" : {
+        "revision" : "c0a447560768e2552cf85a586dea8cfc26162891",
+        "version" : "15.1.0"
+      }
+    },
+    {
+      "identity" : "urui",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/BlockchainCommons/URUI",
+      "state" : {
+        "revision" : "c1b0ac2d0ba77741f00f439d311e7c85ee26a70a",
+        "version" : "12.0.0"
+      }
+    }
+  ],
+  "version" : 3
+}

hellbender.xcodeproj/xcshareddata/xcschemes/hellbender.xcscheme

@@ -16,9 +16,9 @@
             <BuildableReference
                BuildableIdentifier = "primary"
                BlueprintIdentifier = "3C9ACE232F5DED94009B00D0"
-               BuildableName = "birch.app"
-               BlueprintName = "birch"
-               ReferencedContainer = "container:birch.xcodeproj">
+               BuildableName = "hellbender.app"
+               BlueprintName = "hellbender"
+               ReferencedContainer = "container:hellbender.xcodeproj">
             </BuildableReference>
          </BuildActionEntry>
       </BuildActionEntries>
@@ -36,9 +36,9 @@
             <BuildableReference
                BuildableIdentifier = "primary"
                BlueprintIdentifier = "3C9ACE332F5DED95009B00D0"
-               BuildableName = "birchTests.xctest"
-               BlueprintName = "birchTests"
-               ReferencedContainer = "container:birch.xcodeproj">
+               BuildableName = "hellbenderTests.xctest"
+               BlueprintName = "hellbenderTests"
+               ReferencedContainer = "container:hellbender.xcodeproj">
             </BuildableReference>
          </TestableReference>
          <TestableReference
@@ -47,9 +47,9 @@
             <BuildableReference
                BuildableIdentifier = "primary"
                BlueprintIdentifier = "3C9ACE3D2F5DED95009B00D0"
-               BuildableName = "birchUITests.xctest"
-               BlueprintName = "birchUITests"
-               ReferencedContainer = "container:birch.xcodeproj">
+               BuildableName = "hellbenderUITests.xctest"
+               BlueprintName = "hellbenderUITests"
+               ReferencedContainer = "container:hellbender.xcodeproj">
             </BuildableReference>
          </TestableReference>
       </Testables>
@@ -69,9 +69,9 @@
          <BuildableReference
             BuildableIdentifier = "primary"
             BlueprintIdentifier = "3C9ACE232F5DED94009B00D0"
-            BuildableName = "birch.app"
-            BlueprintName = "birch"
-            ReferencedContainer = "container:birch.xcodeproj">
+            BuildableName = "hellbender.app"
+            BlueprintName = "hellbender"
+            ReferencedContainer = "container:hellbender.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
    </LaunchAction>
@@ -86,9 +86,9 @@
          <BuildableReference
             BuildableIdentifier = "primary"
             BlueprintIdentifier = "3C9ACE232F5DED94009B00D0"
-            BuildableName = "birch.app"
-            BlueprintName = "birch"
-            ReferencedContainer = "container:birch.xcodeproj">
+            BuildableName = "hellbender.app"
+            BlueprintName = "hellbender"
+            ReferencedContainer = "container:hellbender.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
    </ProfileAction>

hellbender/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,38 @@
+{
+  "images" : [
+    {
+      "filename" : "AppIcon.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ],
+      "filename" : "AppIcon.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "tinted"
+        }
+      ],
+      "filename" : "AppIcon.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

hellbender/Assets.xcassets/WelcomeIcon.imageset/Contents.json

@@ -6,10 +6,12 @@
       "scale" : "1x"
     },
     {
+      "filename" : "AppIcon.png",
       "idiom" : "universal",
       "scale" : "2x"
     },
     {
+      "filename" : "AppIcon.png",
       "idiom" : "universal",
       "scale" : "3x"
     }
@@ -18,4 +20,4 @@
     "author" : "xcode",
     "version" : 1
   }
-}
+}

hellbender/ContentView.swift

@@ -3,7 +3,7 @@ import OSLog
 import SwiftData
 import SwiftUI
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "AppLifecycle")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "AppLifecycle")
 
 struct ContentView: View {
   @Query private var wallets: [WalletProfile]
@@ -100,26 +100,21 @@ private struct PrivacyOverlayView: View {
       Color.hbBackground
         .ignoresSafeArea()
 
-      VStack(spacing: 32) {
-        Spacer()
-
-        ThemedAppIcon()
-          .aspectRatio(contentMode: .fit)
-          .frame(width: 120, height: 120)
-          .clipShape(RoundedRectangle(cornerRadius: 28, style: .continuous))
-          .overlay(
-            RoundedRectangle(cornerRadius: 28, style: .continuous)
-              .stroke(Color.hbBackground, lineWidth: 24)
-              .blur(radius: 12)
-              .clipShape(RoundedRectangle(cornerRadius: 28, style: .continuous))
-          )
-
-        Text("Birch Wallet")
-          .font(.hbDisplay(34))
-          .foregroundStyle(Color.hbTextPrimary)
-
-        Spacer()
-      }
+      Image("WelcomeIcon")
+        .resizable()
+        .aspectRatio(contentMode: .fit)
+        .frame(width: 120, height: 120)
+        .clipShape(RoundedRectangle(cornerRadius: 28, style: .continuous))
+        .overlay(
+          RoundedRectangle(cornerRadius: 28, style: .continuous)
+            .stroke(Color.hbBackground, lineWidth: 24)
+            .blur(radius: 12)
+            .clipShape(RoundedRectangle(cornerRadius: 28, style: .continuous))
+        )
+        .overlay(
+          RoundedRectangle(cornerRadius: 28, style: .continuous)
+            .strokeBorder(Color.hbBorder.opacity(0.5), lineWidth: 1)
+        )
     }
   }
 }

hellbender/Info.plist

@@ -5,49 +5,9 @@
 	<key>CFBundleDevelopmentRegion</key>
 	<string>$(DEVELOPMENT_LANGUAGE)</string>
 	<key>CFBundleDisplayName</key>
-	<string>Birch Wallet</string>
+	<string>Hellbender</string>
 	<key>CFBundleExecutable</key>
 	<string>$(EXECUTABLE_NAME)</string>
-	<key>CFBundleIcons</key>
-	<dict>
-		<key>CFBundlePrimaryIcon</key>
-		<dict>
-			<key>CFBundleIconName</key>
-			<string>AppIcon</string>
-		</dict>
-		<key>CFBundleAlternateIcons</key>
-		<dict>
-			<key>AppIcon-Dark</key>
-			<dict>
-				<key>CFBundleIconFiles</key>
-				<array>
-					<string>AppIcon-Dark</string>
-				</array>
-				<key>UIPrerenderedIcon</key>
-				<false/>
-			</dict>
-		</dict>
-	</dict>
-	<key>CFBundleIcons~ipad</key>
-	<dict>
-		<key>CFBundlePrimaryIcon</key>
-		<dict>
-			<key>CFBundleIconName</key>
-			<string>AppIcon</string>
-		</dict>
-		<key>CFBundleAlternateIcons</key>
-		<dict>
-			<key>AppIcon-Dark</key>
-			<dict>
-				<key>CFBundleIconFiles</key>
-				<array>
-					<string>AppIcon-Dark</string>
-				</array>
-				<key>UIPrerenderedIcon</key>
-				<false/>
-			</dict>
-		</dict>
-	</dict>
 	<key>CFBundleIdentifier</key>
 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
@@ -63,9 +23,9 @@
 	<key>LSApplicationCategoryType</key>
 	<string>public.app-category.finance</string>
 	<key>NSCameraUsageDescription</key>
-	<string>Birch needs camera access to scan QR codes for importing cosigner keys and signed PSBTs from hardware wallets.</string>
+	<string>Hellbender needs camera access to scan QR codes for importing cosigner keys and signed PSBTs from hardware wallets.</string>
 	<key>NSFaceIDUsageDescription</key>
-	<string>Birch uses Face ID to securely unlock your wallet.</string>
+	<string>Hellbender uses Face ID to securely unlock your wallet.</string>
 	<key>UIApplicationSceneManifest</key>
 	<dict>
 		<key>UIApplicationSupportsMultipleScenes</key>

hellbender/Services/BitcoinService.swift

@@ -21,7 +21,7 @@ enum FeeSource: String, CaseIterable {
   }
 }
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "BitcoinService")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "BitcoinService")
 
 @Observable
 @MainActor
@@ -1333,18 +1333,12 @@ final class BitcoinService {
   ) -> String {
     let chain = isChange ? "1" : "0"
     let coinType = network.coinType
-    let isTestnet = network != .mainnet
 
-    let normalized = cosigners.map { cosigner -> (xpub: String, fingerprint: String, derivationPath: String) in
-      let raw = cosigner.xpub.trimmingCharacters(in: CharacterSet(charactersIn: "/"))
-      let xpub = URService.normalizeXpub(raw, isTestnet: isTestnet) ?? raw
-      return (xpub: xpub, fingerprint: cosigner.fingerprint, derivationPath: cosigner.derivationPath)
-    }
-
-    let sorted = normalized.sorted { $0.xpub < $1.xpub }
+    let sorted = cosigners.sorted { $0.xpub < $1.xpub }
 
     let keys = sorted.map { cosigner in
-      "[\(cosigner.fingerprint)/48'/\(coinType)'/0'/2']\(cosigner.xpub)/\(chain)/*"
+      let xpub = cosigner.xpub.trimmingCharacters(in: CharacterSet(charactersIn: "/"))
+      return "[\(cosigner.fingerprint)/48'/\(coinType)'/0'/2']\(xpub)/\(chain)/*"
     }.joined(separator: ",")
 
     return "wsh(sortedmulti(\(requiredSignatures),\(keys)))"
@@ -1357,20 +1351,11 @@ final class BitcoinService {
     network: BitcoinNetwork
   ) -> String {
     let coinType = network.coinType
-    let isTestnet = network != .mainnet
-
-    // Normalize each cosigner xpub to standard xpub/tpub format (BDK descriptor
-    // parser does not accept SLIP132-tagged Vpub/Zpub/Ypub/Upub keys).
-    let normalized = cosigners.map { cosigner -> (xpub: String, fingerprint: String, derivationPath: String) in
-      let raw = cosigner.xpub.trimmingCharacters(in: CharacterSet(charactersIn: "/"))
-      let xpub = URService.normalizeXpub(raw, isTestnet: isTestnet) ?? raw
-      return (xpub: xpub, fingerprint: cosigner.fingerprint, derivationPath: cosigner.derivationPath)
-    }
-
-    let sorted = normalized.sorted { $0.xpub < $1.xpub }
+    let sorted = cosigners.sorted { $0.xpub < $1.xpub }
 
     let keys = sorted.map { cosigner in
-      "[\(cosigner.fingerprint)/48'/\(coinType)'/0'/2']\(cosigner.xpub)/<0;1>/*"
+      let xpub = cosigner.xpub.trimmingCharacters(in: CharacterSet(charactersIn: "/"))
+      return "[\(cosigner.fingerprint)/48'/\(coinType)'/0'/2']\(xpub)/<0;1>/*"
     }.joined(separator: ",")
 
     let raw = "wsh(sortedmulti(\(requiredSignatures),\(keys)))"

hellbender/Services/FiatPriceService.swift

@@ -2,7 +2,7 @@ import Foundation
 import Observation
 import OSLog
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "FiatPriceService")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "FiatPriceService")
 
 enum FiatSource: String, CaseIterable {
   case zeus

hellbender/Services/LabelService.swift

@@ -2,7 +2,7 @@ import Foundation
 import OSLog
 import SwiftData
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "LabelService")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "LabelService")
 
 /// Handles label propagation between transactions, UTXOs, and addresses.
 enum LabelService {

hellbender/Utilities/Constants.swift

@@ -3,7 +3,7 @@ import Foundation
 enum Constants {
   // MARK: - App
 
-  static let appName = "Birch"
+  static let appName = "Hellbender"
   static let defaultNetwork: BitcoinNetwork = .testnet4
 
   // MARK: - BIP48 P2WSH

hellbender/Utilities/KeychainHelper.swift

@@ -1,15 +1,7 @@
 import Foundation
 import Security
 
-protocol KeychainStoring {
-  @discardableResult
-  static func save(_ data: Data, forKey key: String) -> Bool
-  static func load(forKey key: String) -> Data?
-  static func delete(forKey key: String)
-  static func deleteAll()
-}
-
-enum KeychainHelper: KeychainStoring {
+enum KeychainHelper {
   private static let service = Bundle.main.bundleIdentifier ?? "com.hellbender"
 
   @discardableResult

hellbender/Utilities/LogExporter.swift

@@ -8,7 +8,7 @@ enum LogExporter {
   static func collectLogs(hours: Double = 1) throws -> String {
     let store = try OSLogStore(scope: .currentProcessIdentifier)
     let cutoff = store.position(date: Date().addingTimeInterval(-hours * 3600))
-    let subsystem = Bundle.main.bundleIdentifier ?? "birch"
+    let subsystem = Bundle.main.bundleIdentifier ?? "hellbender"
 
     let entries = try store.getEntries(at: cutoff, matching: NSPredicate(format: "subsystem == %@", subsystem))
 
@@ -27,7 +27,7 @@ enum LogExporter {
       return "No log entries found in the last \(Int(hours)) hour(s)."
     }
 
-    let header = "Birch Logs — Exported \(formatter.string(from: Date()))\n"
+    let header = "Hellbender Logs — Exported \(formatter.string(from: Date()))\n"
       + "Entries: \(lines.count) (last \(Int(hours))h)\n"
       + String(repeating: "─", count: 60) + "\n"
 

hellbender/ViewModels/AppLockViewModel.swift

@@ -4,7 +4,7 @@ import LocalAuthentication
 import OSLog
 import SwiftData
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "AppLock")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "AppLock")
 
 @Observable
 @MainActor
@@ -18,7 +18,6 @@ final class AppLockViewModel {
   private(set) var failedAttempts: Int = 0
   private(set) var lockoutExpiry: Date?
   private var backgroundTime: Date?
-  private let keychain: KeychainStoring.Type
 
   // MARK: - Computed
 
@@ -48,10 +47,9 @@ final class AppLockViewModel {
 
   // MARK: - Init
 
-  init(keychain: KeychainStoring.Type = KeychainHelper.self) {
-    self.keychain = keychain
-    hasPIN = keychain.load(forKey: Constants.keychainPINHashKey) != nil
-    if let data = keychain.load(forKey: Constants.keychainPINLengthKey),
+  init() {
+    hasPIN = KeychainHelper.load(forKey: Constants.keychainPINHashKey) != nil
+    if let data = KeychainHelper.load(forKey: Constants.keychainPINLengthKey),
        let str = String(data: data, encoding: .utf8),
        let len = Int(str)
     {
@@ -104,7 +102,7 @@ final class AppLockViewModel {
       return false
     }
 
-    guard let storedHash = keychain.load(forKey: Constants.keychainPINHashKey) else {
+    guard let storedHash = KeychainHelper.load(forKey: Constants.keychainPINHashKey) else {
       return false
     }
 
@@ -140,8 +138,8 @@ final class AppLockViewModel {
   func setPIN(_ pin: String) {
     logger.info("PIN set (\(pin.count) digits)")
     let hash = hashPIN(pin)
-    keychain.save(hash, forKey: Constants.keychainPINHashKey)
-    keychain.save(Data("\(pin.count)".utf8), forKey: Constants.keychainPINLengthKey)
+    KeychainHelper.save(hash, forKey: Constants.keychainPINHashKey)
+    KeychainHelper.save(Data("\(pin.count)".utf8), forKey: Constants.keychainPINLengthKey)
     failedAttempts = 0
     persistFailedAttempts()
     lockoutExpiry = nil
@@ -152,10 +150,10 @@ final class AppLockViewModel {
 
   func removePIN() {
     logger.info("PIN removed")
-    keychain.delete(forKey: Constants.keychainPINHashKey)
-    keychain.delete(forKey: Constants.keychainPINLengthKey)
-    keychain.delete(forKey: Constants.keychainFailedAttemptsKey)
-    keychain.delete(forKey: Constants.keychainLockoutExpiryKey)
+    KeychainHelper.delete(forKey: Constants.keychainPINHashKey)
+    KeychainHelper.delete(forKey: Constants.keychainPINLengthKey)
+    KeychainHelper.delete(forKey: Constants.keychainFailedAttemptsKey)
+    KeychainHelper.delete(forKey: Constants.keychainLockoutExpiryKey)
     failedAttempts = 0
     lockoutExpiry = nil
     hasPIN = false
@@ -172,15 +170,6 @@ final class AppLockViewModel {
   }
 
   func handleForeground(timeout: Int) {
-    hasPIN = keychain.load(forKey: Constants.keychainPINHashKey) != nil
-    if let data = keychain.load(forKey: Constants.keychainPINLengthKey),
-       let str = String(data: data, encoding: .utf8),
-       let len = Int(str)
-    {
-      storedPINLength = len
-    } else {
-      storedPINLength = 6
-    }
     if let bgTime = backgroundTime {
       let elapsed = Int(Date().timeIntervalSince(bgTime))
       if elapsed >= timeout {
@@ -219,7 +208,7 @@ final class AppLockViewModel {
     }
 
     // Clear Keychain
-    keychain.deleteAll()
+    KeychainHelper.deleteAll()
 
     // Reset BitcoinService
     BitcoinService.shared.unloadWallet()
@@ -256,13 +245,13 @@ final class AppLockViewModel {
   }
 
   private func loadPersistedState() {
-    if let data = keychain.load(forKey: Constants.keychainFailedAttemptsKey),
+    if let data = KeychainHelper.load(forKey: Constants.keychainFailedAttemptsKey),
        let str = String(data: data, encoding: .utf8),
        let count = Int(str)
     {
       failedAttempts = count
     }
-    if let data = keychain.load(forKey: Constants.keychainLockoutExpiryKey),
+    if let data = KeychainHelper.load(forKey: Constants.keychainLockoutExpiryKey),
        let str = String(data: data, encoding: .utf8),
        let interval = Double(str)
     {
@@ -272,14 +261,14 @@ final class AppLockViewModel {
   }
 
   private func persistFailedAttempts() {
-    keychain.save(Data("\(failedAttempts)".utf8), forKey: Constants.keychainFailedAttemptsKey)
+    KeychainHelper.save(Data("\(failedAttempts)".utf8), forKey: Constants.keychainFailedAttemptsKey)
   }
 
   private func persistLockoutExpiry() {
     if let expiry = lockoutExpiry {
-      keychain.save(Data("\(expiry.timeIntervalSince1970)".utf8), forKey: Constants.keychainLockoutExpiryKey)
+      KeychainHelper.save(Data("\(expiry.timeIntervalSince1970)".utf8), forKey: Constants.keychainLockoutExpiryKey)
     } else {
-      keychain.delete(forKey: Constants.keychainLockoutExpiryKey)
+      KeychainHelper.delete(forKey: Constants.keychainLockoutExpiryKey)
     }
   }
 }

hellbender/ViewModels/BumpFeeViewModel.swift

@@ -3,7 +3,7 @@ import Observation
 import OSLog
 import SwiftData
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "BumpFeeViewModel")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "BumpFeeViewModel")
 
 @Observable
 @MainActor

hellbender/ViewModels/SendViewModel.swift

@@ -3,7 +3,7 @@ import Observation
 import OSLog
 import SwiftData
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "SendViewModel")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "SendViewModel")
 
 @Observable
 @MainActor

hellbender/ViewModels/SetupWizardViewModel.swift

@@ -193,17 +193,13 @@ final class SetupWizardViewModel {
   func buildDescriptors() {
     guard allCosignersComplete else { return }
 
-    // Build key origin strings — normalize to standard xpub/tpub format before
-    // sorting so BIP67 ordering matches what's emitted in the descriptor.
-    let isTestnet = network != .mainnet
+    // Build key origin strings and sort by xpub (BIP67 lexicographic sort)
     var keyEntries: [(origin: String, xpub: String, fingerprint: String, path: String, label: String, index: Int)] = []
 
     for i in 0 ..< totalCosigners {
-      let raw = cosignerXpubs[i].trimmingCharacters(in: CharacterSet(charactersIn: "/"))
-      let normalized = URService.normalizeXpub(raw, isTestnet: isTestnet) ?? raw
       keyEntries.append((
         origin: "[\(cosignerFingerprints[i])/48'/\(network.coinType)'/0'/2']",
-        xpub: normalized,
+        xpub: cosignerXpubs[i],
         fingerprint: cosignerFingerprints[i],
         path: cosignerDerivationPaths[i],
         label: cosignerLabels[i],
@@ -215,10 +211,12 @@ final class SetupWizardViewModel {
     keyEntries.sort { $0.xpub < $1.xpub }
 
     let externalKeys = keyEntries.map {
-      "\($0.origin)\($0.xpub)/0/*"
+      let xpub = $0.xpub.trimmingCharacters(in: CharacterSet(charactersIn: "/"))
+      return "\($0.origin)\(xpub)/0/*"
     }.joined(separator: ",")
     let internalKeys = keyEntries.map {
-      "\($0.origin)\($0.xpub)/1/*"
+      let xpub = $0.xpub.trimmingCharacters(in: CharacterSet(charactersIn: "/"))
+      return "\($0.origin)\(xpub)/1/*"
     }.joined(separator: ",")
 
     externalDescriptor = "wsh(sortedmulti(\(requiredSignatures),\(externalKeys)))"

hellbender/ViewModels/WalletManagerViewModel.swift

@@ -3,7 +3,7 @@ import Observation
 import OSLog
 import SwiftData
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "WalletManager")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "WalletManager")
 
 @Observable
 @MainActor

hellbender/Views/Components/BBQRDisplayView.swift

@@ -3,7 +3,7 @@ import CoreImage.CIFilterBuiltins
 import OSLog
 import SwiftUI
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "BBQRDisplayView")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "BBQRDisplayView")
 
 struct BBQRDisplayView: View {
   let data: Data

hellbender/Views/Components/Theme.swift

@@ -78,17 +78,17 @@ struct HBTheme {
   )
 
   static let birchLight = HBTheme(
-    background: Color(red: 0.949, green: 0.933, blue: 0.902),
-    surface: Color(red: 0.890, green: 0.867, blue: 0.827),
-    surfaceElevated: Color(red: 0.949, green: 0.933, blue: 0.902),
-    border: Color(red: 0.690, green: 0.663, blue: 0.616),
-    textPrimary: Color(red: 0.137, green: 0.122, blue: 0.106),
-    textSecondary: Color(red: 0.310, green: 0.282, blue: 0.251),
-    accent: Color(red: 0.698, green: 0.525, blue: 0.133),
-    heroBackground: Color(red: 0.890, green: 0.867, blue: 0.827),
-    success: Color(red: 0.278, green: 0.373, blue: 0.224),
-    error: Color(red: 0.600, green: 0.180, blue: 0.120),
-    secondaryAccent: Color(red: 0.278, green: 0.373, blue: 0.224),
+    background: Color(red: 0.929, green: 0.910, blue: 0.875),
+    surface: Color(red: 0.851, green: 0.824, blue: 0.773),
+    surfaceElevated: Color(red: 0.929, green: 0.910, blue: 0.875),
+    border: Color(red: 0.769, green: 0.741, blue: 0.690),
+    textPrimary: Color(red: 0.165, green: 0.145, blue: 0.125),
+    textSecondary: Color(red: 0.420, green: 0.380, blue: 0.345),
+    accent: Color(red: 0.769, green: 0.584, blue: 0.165),
+    heroBackground: Color(red: 0.851, green: 0.824, blue: 0.773),
+    success: Color(red: 0.353, green: 0.400, blue: 0.259),
+    error: Color(red: 0.549, green: 0.188, blue: 0.125),
+    secondaryAccent: Color(red: 0.353, green: 0.400, blue: 0.259),
     colorScheme: .light
   )
 }
@@ -105,8 +105,8 @@ enum AppTheme: String, CaseIterable {
   var displayName: String {
     switch self {
     case .system: "System"
-    case .dark: "Hellbender Dark"
-    case .light: "Hellbender Light"
+    case .dark: "Dark"
+    case .light: "Light"
     case .birchDark: "Birch Dark"
     case .birchLight: "Birch Light"
     }
@@ -128,7 +128,7 @@ enum AppTheme: String, CaseIterable {
 @Observable
 final class ThemeManager {
   static let shared = ThemeManager()
-  private(set) var theme: HBTheme = .birchDark
+  private(set) var theme: HBTheme = .dark
 
   private init() {
     let saved = UserDefaults.standard.string(forKey: Constants.themeKey) ?? AppTheme.system.rawValue
@@ -143,7 +143,7 @@ final class ThemeManager {
   /// Sets the displayed theme to the appropriate custom palette for the given OS color scheme.
   /// Only used when the System theme is selected — does not save to UserDefaults.
   func applySystemColorScheme(_ colorScheme: ColorScheme) {
-    theme = colorScheme == .dark ? .birchDark : .birchLight
+    theme = colorScheme == .dark ? .dark : .light
   }
 }
 
@@ -288,21 +288,6 @@ extension View {
   }
 }
 
-// MARK: - Themed App Icon
-
-/// Renders the app-icon artwork that matches the current theme's light/dark appearance.
-/// Uses `AppIconPreviewLight` on light color schemes, `AppIconPreviewDark` on dark.
-/// The theme is applied via `.preferredColorScheme` at the root, so this works for
-/// all AppTheme cases (system, birch light/dark).
-struct ThemedAppIcon: View {
-  @Environment(\.colorScheme) private var colorScheme
-
-  var body: some View {
-    Image(colorScheme == .dark ? "AppIconPreviewDark" : "AppIconPreviewLight")
-      .resizable()
-  }
-}
-
 // MARK: - Network Badge
 
 struct NetworkBadge: View {

hellbender/Views/Components/URScannerSheet.swift

@@ -6,7 +6,7 @@ import SwiftUI
 import URKit
 import URUI
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "URScannerSheet")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "URScannerSheet")
 
 struct URScannerSheet: View {
   let onResult: (AppURResult) -> Void

hellbender/Views/Main/Dashboard/ConnectionStatusView.swift

@@ -265,7 +265,7 @@ struct ConnectionStatusView: View {
   }
 
   private func copyDebugInfo() {
-    var lines = ["=== Birch Debug Info ==="]
+    var lines = ["=== Hellbender Debug Info ==="]
     lines.append("Timestamp: \(ISO8601DateFormatter().string(from: Date()))")
 
     // SwiftData wallet info

hellbender/Views/Main/MainTabView.swift

@@ -2,7 +2,7 @@ import OSLog
 import SwiftData
 import SwiftUI
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "Navigation")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "Navigation")
 
 struct MainTabView: View {
   @State private var selectedTab = 0

hellbender/Views/Main/Send/BroadcastResultView.swift

@@ -243,7 +243,7 @@ struct BroadcastResultView: View {
             walletID: walletID
           )
         } catch {
-          Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "LabelService")
+          Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "LabelService")
             .error("Failed to propagate change label: \(error.localizedDescription)")
         }
       }

hellbender/Views/Main/Settings/SettingsView.swift

@@ -3,7 +3,7 @@ import OSLog
 import SwiftData
 import SwiftUI
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "Settings")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "Settings")
 
 struct SettingsView: View {
   @Environment(\.modelContext) private var modelContext
@@ -24,6 +24,11 @@ struct SettingsView: View {
           // Security
           AppLockSettingsSection()
 
+          // Appearance
+          Section("Appearance") {
+            AppearanceSettingsRow()
+          }
+
           // Fee Estimation
           Section("Fee Estimation") {
             FeeSettingsRow()
@@ -34,16 +39,6 @@ struct SettingsView: View {
             FiatSettingsRow()
           }
 
-          // Appearance
-          Section("Appearance") {
-            AppearanceSettingsRow()
-          }
-
-          // App Icon
-          Section("App Icon") {
-            AppIconSettingsRow()
-          }
-
           // About
           Section("About") {
             HStack {
@@ -97,108 +92,6 @@ private struct AppearanceSettingsRow: View {
   }
 }
 
-// MARK: - App Icon Settings
-
-private enum AppIconOption: String, CaseIterable, Identifiable {
-  case light
-  case dark
-
-  var id: String {
-    rawValue
-  }
-
-  /// Name passed to `UIApplication.setAlternateIconName`; `nil` selects the primary icon.
-  var alternateIconName: String? {
-    switch self {
-    case .light: nil
-    case .dark: "AppIcon-Dark"
-    }
-  }
-
-  var displayName: String {
-    switch self {
-    case .light: "Light"
-    case .dark: "Dark"
-    }
-  }
-
-  var previewAssetName: String {
-    switch self {
-    case .light: "AppIconPreviewLight"
-    case .dark: "AppIconPreviewDark"
-    }
-  }
-
-  static var current: AppIconOption {
-    UIApplication.shared.alternateIconName == "AppIcon-Dark" ? .dark : .light
-  }
-}
-
-private struct AppIconSettingsRow: View {
-  @State private var selected: AppIconOption = .current
-
-  var body: some View {
-    HStack(spacing: 12) {
-      ForEach(AppIconOption.allCases) { option in
-        AppIconTile(option: option, isSelected: selected == option) {
-          select(option)
-        }
-      }
-    }
-    .listRowBackground(Color.hbSurface)
-  }
-
-  private func select(_ option: AppIconOption) {
-    guard selected != option else { return }
-    UIApplication.shared.setAlternateIconName(option.alternateIconName) { error in
-      Task { @MainActor in
-        if let error {
-          logger.error("Failed to set app icon: \(error.localizedDescription, privacy: .public)")
-        } else {
-          logger.info("App icon changed to \(option.displayName, privacy: .public)")
-          selected = option
-        }
-      }
-    }
-  }
-}
-
-private struct AppIconTile: View {
-  let option: AppIconOption
-  let isSelected: Bool
-  let onTap: () -> Void
-
-  var body: some View {
-    Button(action: onTap) {
-      VStack(spacing: 8) {
-        Image(option.previewAssetName)
-          .resizable()
-          .aspectRatio(contentMode: .fit)
-          .frame(width: 72, height: 72)
-          .clipShape(RoundedRectangle(cornerRadius: 16, style: .continuous))
-          .overlay(
-            RoundedRectangle(cornerRadius: 16, style: .continuous)
-              .stroke(isSelected ? Color.hbBitcoinOrange : Color.hbBorder, lineWidth: isSelected ? 3 : 1)
-          )
-
-        HStack(spacing: 4) {
-          if isSelected {
-            Image(systemName: "checkmark.circle.fill")
-              .font(.system(size: 12))
-              .foregroundStyle(Color.hbBitcoinOrange)
-          }
-          Text(option.displayName)
-            .font(.hbBody(13))
-            .foregroundStyle(Color.hbTextPrimary)
-        }
-      }
-      .frame(maxWidth: .infinity)
-      .padding(.vertical, 8)
-    }
-    .buttonStyle(.plain)
-  }
-}
-
 // MARK: - Denomination Settings
 
 private struct DenominationSettingsRow: View {
@@ -266,7 +159,6 @@ private struct FiatSettingsRow: View {
         }
       }
       .tint(Color.hbBitcoinOrange)
-      .accessibilityIdentifier("showFiatPriceToggle")
 
       if fiatEnabled {
         Picker("Price Source", selection: $fiatSourceRaw) {

hellbender/Views/Main/Settings/UTXODetailView.swift

@@ -2,7 +2,7 @@ import OSLog
 import SwiftData
 import SwiftUI
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "UTXODetail")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "UTXODetail")
 
 struct UTXODetailView: View {
   let utxo: UTXOItem

hellbender/Views/Main/Settings/WalletInfoView.swift

@@ -3,7 +3,7 @@ import SwiftData
 import SwiftUI
 import URKit
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "WalletInfo")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "WalletInfo")
 
 struct WalletInfoView: View {
   @Environment(\.modelContext) private var modelContext
@@ -687,9 +687,10 @@ private struct EditCosignersView: View {
         Text("Derivation Path")
           .font(.hbLabel())
           .foregroundStyle(Color.hbTextSecondary)
-        Text(editableCosigners[index].derivationPath.isEmpty ? "–" : editableCosigners[index].derivationPath)
+        TextField("m/48'/1'/0'/2'", text: $editableCosigners[index].derivationPath)
           .font(.hbMono())
-          .frame(maxWidth: .infinity, alignment: .leading)
+          .textInputAutocapitalization(.never)
+          .autocorrectionDisabled()
           .padding(12)
           .background(Color.hbSurfaceElevated)
           .clipShape(RoundedRectangle(cornerRadius: 8))

hellbender/Views/Main/Transactions/TransactionDetailView.swift

@@ -2,7 +2,7 @@ import OSLog
 import SwiftData
 import SwiftUI
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "TransactionDetailView")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "TransactionDetailView")
 
 struct TransactionDetailView: View {
   let transaction: TransactionItem

hellbender/Views/Main/Transactions/TransactionListView.swift

@@ -3,7 +3,7 @@ import SwiftData
 import SwiftUI
 import UniformTypeIdentifiers
 
-private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "birch", category: "TransactionListView")
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "hellbender", category: "TransactionListView")
 
 struct TransactionListView: View {
   @Query private var wallets: [WalletProfile]

hellbender/Views/Setup/CosignerImportView.swift

@@ -66,9 +66,10 @@ struct CosignerImportView: View {
               .font(.hbLabel())
               .foregroundStyle(Color.hbTextSecondary)
 
-            Text(viewModel.cosignerDerivationPaths[viewModel.currentCosignerIndex].isEmpty ? "–" : viewModel.cosignerDerivationPaths[viewModel.currentCosignerIndex])
+            TextField("m/48'/1'/0'/2'", text: $viewModel.cosignerDerivationPaths[viewModel.currentCosignerIndex])
               .font(.hbMono())
-              .frame(maxWidth: .infinity, alignment: .leading)
+              .textInputAutocapitalization(.never)
+              .autocorrectionDisabled()
               .padding(12)
               .background(Color.hbSurfaceElevated)
               .clipShape(RoundedRectangle(cornerRadius: 8))