fix: rewrite BuildCard with clean imperative code — no invalid method chaining

- Menubar shows ↑ Update alongside limits when an update is available
- Removed × dismiss button from update banner; it stays until installed

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,30 @@
+---
+name: Bug report
+about: Report something that isn't working correctly
+title: ''
+labels: bug
+assignees: ''
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behaviour:
+1.
+2.
+3.
+
+**Expected behaviour**
+What you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Environment**
+- macOS version: [e.g. Sequoia 15.4]
+- ClaudeChecker version: [e.g. 1.1.3]
+- Claude plan: [e.g. Pro, Max]
+
+**Additional context**
+Any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,22 @@
+---
+name: Feature request
+about: Suggest an idea or improvement
+title: ''
+labels: enhancement
+assignees: ''
+---
+
+**What problem does this solve?**
+A clear and concise description of the problem or limitation you're running into.
+
+**Describe the solution you'd like**
+What you'd like to happen.
+
+**Alternatives considered**
+Any other approaches you've thought about.
+
+**Screenshots or mockups**
+If applicable, add visuals to help explain your idea.
+
+**Additional context**
+Any other context here.

.github/workflows/release-beta.yml

@@ -0,0 +1,79 @@
+name: Release Beta
+
+on:
+  push:
+    tags:
+      - 'v*-beta*'
+
+jobs:
+  release-beta:
+    runs-on: macos-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Get version from tag
+        id: version
+        run: echo "version=${GITHUB_REF_NAME#v}" >> $GITHUB_OUTPUT
+
+      - name: Build
+        run: |
+          xcodebuild \
+            -project ClaudeChecker.xcodeproj \
+            -scheme ClaudeChecker \
+            -configuration Release \
+            -derivedDataPath build \
+            clean build
+
+      - name: Zip app
+        run: |
+          ditto -c -k --keepParent \
+            build/Build/Products/Release/ClaudeChecker.app \
+            ClaudeChecker.zip
+
+      - name: Create GitHub pre-release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh release create "$GITHUB_REF_NAME" ClaudeChecker.zip \
+            --title "$GITHUB_REF_NAME" \
+            --prerelease \
+            --notes "$(cat RELEASE_NOTES.md 2>/dev/null || echo 'Beta release ${{ steps.version.outputs.version }}')"
+
+      - name: Update version-beta.json
+        run: |
+          notes=$(cat RELEASE_NOTES.md 2>/dev/null || echo "Beta release ${{ steps.version.outputs.version }}")
+          jq -n \
+            --arg version "${{ steps.version.outputs.version }}" \
+            --arg url "https://github.com/${{ github.repository }}/releases/download/${{ github.ref_name }}/ClaudeChecker.zip" \
+            --arg notes "$notes" \
+            '{version: $version, url: $url, notes: $notes}' > version-beta.json
+
+      - name: Update beta badge in README
+        run: |
+          shields_version=$(echo "${{ steps.version.outputs.version }}" | sed 's/-/--/g')
+          tag="${{ github.ref_name }}"
+          export BADGE="[![Beta](https://img.shields.io/badge/beta-${shields_version}-orange?style=flat)](https://github.com/${{ github.repository }}/releases/tag/${tag}) <!-- BETA_BADGE -->"
+          python3 -c "
+          import os
+          badge = os.environ['BADGE']
+          lines = open('README.md').readlines()
+          out = []
+          for line in lines:
+              out.append(badge + chr(10) if '<!-- BETA_BADGE -->' in line else line)
+          open('README.md', 'w').writelines(out)
+          "
+
+      - name: Commit version-beta.json and README
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add version-beta.json README.md
+          git commit -m "Beta release ${{ github.ref_name }}"
+          git pull --rebase origin main
+          git push origin HEAD:main

.github/workflows/release-windows-beta.yml

@@ -0,0 +1,71 @@
+name: Release Windows Beta
+
+on:
+  push:
+    tags:
+      - 'win-v*-beta*'
+
+jobs:
+  release-windows-beta:
+    runs-on: windows-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Get version from tag
+        id: version
+        shell: bash
+        run: echo "version=${GITHUB_REF_NAME#win-v}" >> $GITHUB_OUTPUT
+
+      - name: Publish
+        run: |
+          dotnet publish windows/ClaudeCheckerWindows.csproj `
+            -c Release -r win-x64 `
+            --self-contained true `
+            -p:PublishSingleFile=true `
+            -p:Version=${{ steps.version.outputs.version }} `
+            -o publish
+
+      - name: Zip
+        shell: pwsh
+        run: |
+          Copy-Item -Recurse windows/Assets publish/Assets
+          Compress-Archive -Path publish/* -DestinationPath ClaudeChecker-Windows.zip
+
+      - name: Create GitHub pre-release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: bash
+        run: |
+          notes=$(cat windows/RELEASE_NOTES.md 2>/dev/null || echo "Windows beta ${{ steps.version.outputs.version }}")
+          gh release create "$GITHUB_REF_NAME" ClaudeChecker-Windows.zip \
+            --title "$GITHUB_REF_NAME" \
+            --prerelease \
+            --notes "$notes"
+
+      - name: Update version-windows-beta.json on main
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: bash
+        run: |
+          notes=$(cat windows/RELEASE_NOTES.md 2>/dev/null || echo "Windows beta ${{ steps.version.outputs.version }}")
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git fetch origin main
+          git checkout main
+          jq -n \
+            --arg version "${{ steps.version.outputs.version }}" \
+            --arg url "https://github.com/${{ github.repository }}/releases/download/${{ github.ref_name }}/ClaudeChecker-Windows.zip" \
+            --arg notes "$notes" \
+            '{version: $version, url: $url, notes: $notes}' > version-windows-beta.json
+          git add version-windows-beta.json
+          git commit -m "Windows beta release ${{ github.ref_name }}"
+          git push origin main

.github/workflows/release-windows.yml

@@ -0,0 +1,71 @@
+name: Release Windows
+
+on:
+  push:
+    tags:
+      - 'win-v*'
+      - '!win-v*-*'
+
+jobs:
+  release-windows:
+    runs-on: windows-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Get version from tag
+        id: version
+        shell: bash
+        run: echo "version=${GITHUB_REF_NAME#win-v}" >> $GITHUB_OUTPUT
+
+      - name: Publish
+        run: |
+          dotnet publish windows/ClaudeCheckerWindows.csproj `
+            -c Release -r win-x64 `
+            --self-contained true `
+            -p:PublishSingleFile=true `
+            -p:Version=${{ steps.version.outputs.version }} `
+            -o publish
+
+      - name: Zip
+        shell: pwsh
+        run: |
+          Copy-Item -Recurse windows/Assets publish/Assets
+          Compress-Archive -Path publish/* -DestinationPath ClaudeChecker-Windows.zip
+
+      - name: Create GitHub release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: bash
+        run: |
+          notes=$(cat windows/RELEASE_NOTES.md 2>/dev/null || echo "Windows release ${{ steps.version.outputs.version }}")
+          gh release create "$GITHUB_REF_NAME" ClaudeChecker-Windows.zip \
+            --title "$GITHUB_REF_NAME" \
+            --notes "$notes"
+
+      - name: Update version-windows.json on main
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: bash
+        run: |
+          notes=$(cat windows/RELEASE_NOTES.md 2>/dev/null || echo "Windows release ${{ steps.version.outputs.version }}")
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git fetch origin main
+          git checkout main
+          jq -n \
+            --arg version "${{ steps.version.outputs.version }}" \
+            --arg url "https://github.com/${{ github.repository }}/releases/download/${{ github.ref_name }}/ClaudeChecker-Windows.zip" \
+            --arg notes "$notes" \
+            '{version: $version, url: $url, notes: $notes}' > version-windows.json
+          git add version-windows.json
+          git commit -m "Windows release ${{ github.ref_name }}"
+          git push origin main

.github/workflows/release.yml

@@ -7,6 +7,7 @@ on:
 
 jobs:
   release:
+    if: ${{ !contains(github.ref_name, '-') }}
     runs-on: macos-latest
     permissions:
       contents: write
@@ -65,10 +66,24 @@ jobs:
             ../homebrew-tap/Casks/claudechecker.rb 2>/dev/null || true
 
       - name: Update README badge
+        env:
+          NEW_VERSION: ${{ steps.version.outputs.version }}
         run: |
-          sed -i '' \
+          python3 -c "
-            's/version-[0-9][^-]*-orange/version-${{ steps.version.outputs.version }}-orange/' \
+          import os, re
-            README.md
+          v = os.environ['NEW_VERSION']
+          content = open('README.md').read()
+          content = re.sub(r'version-[0-9][^-]*-orange', 'version-' + v + '-orange', content)
+          lines = content.splitlines(keepends=True)
+          out = []
+          for line in lines:
+              if '<!-- BETA_BADGE -->' in line:
+                  continue
+              out.append(line)
+              if 'license-MIT-blue' in line:
+                  out.append('<!-- BETA_BADGE -->' + chr(10))
+          open('README.md', 'w').writelines(out)
+          "
 
       - name: Commit version.json and README
         run: |
@@ -76,6 +91,7 @@ jobs:
           git config user.email "github-actions[bot]@users.noreply.github.com"
           git add version.json README.md
           git commit -m "Release ${{ github.ref_name }}"
+          git pull --rebase origin main
           git push origin HEAD:main
 
       - name: Update Homebrew tap

CONTRIBUTING.md

@@ -0,0 +1,19 @@
+# Contributing
+
+Thanks for your interest in ClaudeChecker!
+
+## Reporting bugs & requesting features
+
+Please use the [issue templates](https://github.com/superdooper86/claudechecker/issues/new/choose) — they keep reports consistent and easy to act on.
+
+## Pull requests
+
+- Open an issue first to discuss anything non-trivial. This avoids wasted effort if the direction isn't a fit.
+- Keep changes focused — one fix or feature per PR.
+- Follow the existing Swift code style in the repo.
+- There's no guarantee PRs will be merged; this is a personal project maintained in spare time.
+
+## Notes
+
+- This app targets macOS 13+
+- No external dependencies — keep it that way

ClaudeChecker/ClaudeCheckerApp.swift

@@ -40,14 +40,17 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 
         // Popover
         popover = NSPopover()
-        popover?.contentSize = NSSize(width: 480, height: 640)
         popover?.behavior = .transient
         popover?.animates = true
-        popover?.contentViewController = NSHostingController(
+        let hc = NSHostingController(
             rootView: ContentView()
                 .environmentObject(usageViewModel)
                 .environmentObject(updateManager)
         )
+        hc.sizingOptions = .preferredContentSize
+        hc.view.wantsLayer = true
+        hc.view.layer?.backgroundColor = NSColor.windowBackgroundColor.cgColor
+        popover?.contentViewController = hc
 
         // React to limits or menubar toggle changes
         usageViewModel.$limits
@@ -60,6 +63,11 @@ class AppDelegate: NSObject, NSApplicationDelegate {
             .sink { [weak self] _ in self?.updateStatusItem() }
             .store(in: &cancellables)
 
+        updateManager.$updateAvailable
+            .receive(on: DispatchQueue.main)
+            .sink { [weak self] _ in self?.updateStatusItem() }
+            .store(in: &cancellables)
+
         // Refresh timer
         scheduleTimer(interval: usageViewModel.refreshInterval)
 
@@ -166,7 +174,13 @@ class AppDelegate: NSObject, NSApplicationDelegate {
             let sdStr = sd.map { "\(Int($0.usedPercent.rounded()))%" } ?? "—"
             button.image = nil
             button.attributedTitle = NSAttributedString(string: "")
-            button.title = "◔ \(fhStr)  \(sdStr)"
+            let updatePrefix = updateManager.updateAvailable ? "↑ Update  " : "◔ "
+            button.title = "\(updatePrefix)\(fhStr)  \(sdStr)"
+            button.font = NSFont.monospacedDigitSystemFont(ofSize: 12, weight: .medium)
+        } else if updateManager.updateAvailable {
+            button.image = nil
+            button.attributedTitle = NSAttributedString(string: "")
+            button.title = "↑ Update"
             button.font = NSFont.monospacedDigitSystemFont(ofSize: 12, weight: .medium)
         } else {
             button.title = ""
@@ -225,3 +239,5 @@ class AppDelegate: NSObject, NSApplicationDelegate {
     }
 
 }
+
+

ClaudeChecker/ContentView.swift

@@ -47,13 +47,29 @@ struct ContentView: View {
                                 EmptyStateView()
                                     .padding(.vertical, 40)
                             } else {
-                                VStack(spacing: 1) {
+                                VStack(spacing: 8) {
                                     ForEach(vm.limits) { limit in
+                                        VStack(spacing: 0) {
+                                            HStack {
+                                                Text(limit.window == .fiveHour ? "5 Hour Limit" : "7 Day Limit")
+                                                    .font(.system(size: 11, weight: .semibold))
+                                                    .foregroundColor(.secondary)
+                                                    .textCase(.uppercase)
+                                                Spacer()
+                                            }
+                                            .padding(.horizontal, 16)
+                                            .padding(.top, 10)
+                                            .padding(.bottom, 4)
+
                                             LimitCard(limit: limit)
+                                                .background(Color(nsColor: .controlBackgroundColor))
+                                                .cornerRadius(8)
+                                                .overlay(RoundedRectangle(cornerRadius: 8).stroke(Color.primary.opacity(0.08), lineWidth: 0.5))
+                                                .padding(.horizontal, 8)
                                         }
                                     }
-                                .background(Color.primary.opacity(0.05))
+                                }
-                                .padding(.vertical, 1)
+                                .padding(.bottom, 4)
 
                                 // Extra credits row
                                 if let extra = vm.extraUsage, extra.isEnabled {
@@ -196,7 +212,7 @@ struct LimitCard: View {
                     AgentIconView(agent: .claude, size: 14)
                     Text("Claude")
                         .font(.system(size: 13, weight: .semibold))
-                    Text("·  \(vm.planLabel)  ·  \(limit.window.label)")
+                    Text("·  \(vm.planLabel)")
                         .font(.system(size: 11))
                         .foregroundColor(.secondary)
                     Spacer()
@@ -413,7 +429,9 @@ struct SparklineView: View {
 
     var body: some View {
         GeometryReader { geo in
-            if data.count > 1 {
+            let plotData = data.count == 1 ? [data[0], data[0]] : data
+            if plotData.count > 1 {
+                let data = plotData
                 let w = geo.size.width
                 let h = geo.size.height
                 let minV = data.min() ?? 0
@@ -773,6 +791,7 @@ struct SettingsView: View {
                             .padding(.vertical, 1)
                             .background(Color.primary.opacity(0.06))
                             .cornerRadius(4)
+                    }
                     if updater.updateAvailable {
                         Text("v\(updater.latestVersion) available")
                             .font(.system(size: 10, weight: .medium))
@@ -781,7 +800,6 @@ struct SettingsView: View {
                             .padding(.vertical, 2)
                             .background(Color.blue)
                             .cornerRadius(4)
-                                .fixedSize()
                     } else if updater.betaAvailable {
                         Text("v\(updater.latestBetaVersion) available")
                             .font(.system(size: 10, weight: .medium))
@@ -790,8 +808,6 @@ struct SettingsView: View {
                             .padding(.vertical, 2)
                             .background(Color.orange)
                             .cornerRadius(4)
-                                .fixedSize()
-                        }
                     }
                     Text("Built by superdooper86 & claude")
                         .font(.system(size: 11))
@@ -1024,25 +1040,20 @@ struct UpdateBanner: View {
             VStack(alignment: .leading, spacing: 1) {
                 Text("Update available — v\(updater.latestVersion)")
                     .font(.system(size: 12, weight: .semibold))
-                if !updater.releaseNotes.isEmpty {
+                Text("Tap Update to view what's new & install.")
-                    ReleaseNotesText(text: updater.releaseNotes, font: .system(size: 11))
+                    .font(.system(size: 11))
-                }
+                    .foregroundColor(.secondary)
             }
             Spacer()
             Button("Update") { showSheet = true }
                 .buttonStyle(.borderedProminent)
                 .controlSize(.small)
-            Button { updater.updateAvailable = false } label: {
-                Image(systemName: "xmark")
-                    .font(.system(size: 10, weight: .medium))
-                    .foregroundColor(.secondary)
-            }
-            .buttonStyle(.plain)
         }
         .padding(.horizontal, 16)
         .padding(.vertical, 10)
         .background(Color.blue.opacity(0.08))
         .overlay(Divider(), alignment: .bottom)
+        .onTapGesture { showSheet = true }
     }
 }
 
@@ -1160,3 +1171,5 @@ struct UpdateSheet: View {
         .frame(width: 380)
     }
 }
+
+

ClaudeChecker/Info.plist

@@ -15,9 +15,9 @@
     <key>CFBundlePackageType</key>
     <string>APPL</string>
     <key>CFBundleShortVersionString</key>
-    <string>1.0.10</string>
+    <string>1.1.3</string>
     <key>CFBundleVersion</key>
-    <string>30</string>
+    <string>40</string>
     <key>LSMinimumSystemVersion</key>
     <string>13.0</string>
     <key>LSUIElement</key>
@@ -45,3 +45,7 @@
     </dict>
 </dict>
 </plist>
+
+
+
+

ClaudeChecker/LoginView.swift

@@ -24,25 +24,31 @@ struct LoginWebView: NSViewRepresentable {
 
     class Coordinator: NSObject, WKNavigationDelegate {
         let onAuthenticated: () -> Void
+        var didAuthenticate = false
 
         init(onAuthenticated: @escaping () -> Void) {
             self.onAuthenticated = onAuthenticated
         }
 
         func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
+            guard !didAuthenticate else { return }
+            // Don't fire on the login/auth pages themselves
+            if let url = webView.url?.absoluteString,
+               url.contains("/login") || url.contains("/auth") { return }
+
             WKWebsiteDataStore.default().httpCookieStore.getAllCookies { cookies in
                 let hasSession = cookies.contains {
                     $0.domain.contains("claude.ai") &&
                     ($0.name == "sessionKey" || $0.name == "__Secure-next-auth.session-token")
                 }
-                if hasSession {
+                guard hasSession, !self.didAuthenticate else { return }
+                self.didAuthenticate = true
                 DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
                     self.onAuthenticated()
                 }
             }
         }
     }
-    }
 }
 
 // MARK: - Login Sheet View
@@ -58,10 +64,19 @@ struct LoginSheetView: View {
                 Text(authenticated ? "✓ Signed in — loading data…" : "Sign in to Claude")
                     .font(.system(size: 13, weight: .semibold))
                 Spacer()
+                if authenticated {
+                    Button("Done") {
+                        isPresented = false
+                        onDone()
+                    }
+                    .buttonStyle(.borderedProminent)
+                    .controlSize(.small)
+                } else {
                     Button("Cancel") { isPresented = false }
                         .buttonStyle(.bordered)
                         .controlSize(.small)
                 }
+            }
             .padding(.horizontal, 14)
             .padding(.vertical, 10)
             .background(Color(nsColor: .windowBackgroundColor))

ClaudeChecker/UpdateManager.swift

@@ -318,13 +318,31 @@ class UpdateManager: ObservableObject {
     }
 
     private func isNewer(_ version: String, than current: String) -> Bool {
-        let toInts = { (v: String) in v.split(separator: ".").compactMap { Int($0) } }
+        func parse(_ v: String) -> (base: [Int], pre: [Int]?) {
-        let a = toInts(version), b = toInts(current)
+            guard !v.isEmpty else { return ([], nil) }
-        for i in 0..<max(a.count, b.count) {
+            let halves = v.split(separator: "-", maxSplits: 1)
-            let av = i < a.count ? a[i] : 0
+            let base = halves[0].split(separator: ".").compactMap { Int($0) }
-            let bv = i < b.count ? b[i] : 0
+            let pre = halves.count > 1 ? String(halves[1]).split(separator: ".").compactMap { Int($0) } : nil
+            return (base, pre)
+        }
+        let a = parse(version), b = parse(current)
+        // Compare base version numbers
+        for i in 0..<max(a.base.count, b.base.count) {
+            let av = i < a.base.count ? a.base[i] : 0
+            let bv = i < b.base.count ? b.base[i] : 0
             if av != bv { return av > bv }
         }
+        // Base equal: stable beats pre-release
+        if a.pre == nil && b.pre != nil { return true }
+        if a.pre != nil && b.pre == nil { return false }
+        // Both pre-release: compare pre-release numbers
+        if let ap = a.pre, let bp = b.pre {
+            for i in 0..<max(ap.count, bp.count) {
+                let av = i < ap.count ? ap[i] : 0
+                let bv = i < bp.count ? bp[i] : 0
+                if av != bv { return av > bv }
+            }
+        }
         return false
     }
 }

ClaudeChecker/UsageViewModel.swift

@@ -37,6 +37,9 @@ class UsageViewModel: ObservableObject {
         let saved = UserDefaults.standard.double(forKey: "refresh_interval")
         refreshInterval = saved > 0 ? saved : 60
         showInMenuBar = UserDefaults.standard.object(forKey: "show_in_menubar") as? Bool ?? true
+        if let saved = UserDefaults.standard.object(forKey: "burn_history") as? [String: [Double]] {
+            burnHistoryStore = saved
+        }
         loadPlaceholderData()
     }
 
@@ -84,8 +87,9 @@ class UsageViewModel: ObservableObject {
                 history.append(limits[i].usedPercent)
                 if history.count > maxHistorySamples { history.removeFirst() }
                 burnHistoryStore[key] = history
-                if history.count > 1 { limits[i].burnHistory = history }
+                limits[i].burnHistory = history
             }
+            UserDefaults.standard.set(burnHistoryStore, forKey: "burn_history")
             checkLimitNotifications(for: limits)
         } catch AppError.notAuthenticated {
             isNotAuthenticated = true
@@ -313,3 +317,4 @@ extension Notification.Name {
     static let limitReset = Notification.Name("limitReset")
     static let openUpdateSheet = Notification.Name("openUpdateSheet")
 }
+

README.md

@@ -8,8 +8,9 @@
 
 [![macOS](https://img.shields.io/badge/macOS-13.0+-000000?style=flat&logo=apple&logoColor=white)](https://www.apple.com/macos/)
 [![Swift](https://img.shields.io/badge/Swift-5.9-F05138?style=flat&logo=swift&logoColor=white)](https://swift.org)
-[![Version](https://img.shields.io/badge/version-1.1.0-orange?style=flat)](https://github.com/superdooper86/claudechecker/releases)
+[![Version](https://img.shields.io/badge/version-1.1.3-orange?style=flat)](https://github.com/superdooper86/claudechecker/releases)
 [![License](https://img.shields.io/badge/license-MIT-blue?style=flat)](LICENSE)
+<!-- BETA_BADGE -->
 
 </div>
 
@@ -29,21 +30,21 @@ No API key required. It reads directly from your `claude.ai` session using a bui
 
 <table>
   <tr>
-    <td align="center"><img src="screenshots/main-v2.png" width="280" alt="Main window" /><br/><sub>Main window</sub></td>
+    <td align="center"><img src="screenshots/main-v3.png" width="280" alt="Main window" /><br/><sub>Main window</sub></td>
-    <td align="center"><img src="screenshots/settings-v2.png" width="280" alt="Settings" /><br/><sub>Settings</sub></td>
+    <td align="center"><img src="screenshots/settings-v3.png" width="280" alt="Settings" /><br/><sub>Settings</sub></td>
   </tr>
   <tr>
-    <td align="center"><img src="screenshots/update-banner.png" width="280" alt="Update banner" /><br/><sub>Update available</sub></td>
+    <td align="center"><img src="screenshots/update-banner.png" width="280" alt="Update available" /><br/><sub>Update available</sub></td>
-    <td align="center"><img src="screenshots/notification.png" width="280" alt="Update notification" /><br/><sub>System notification</sub></td>
+    <td align="center"><img src="screenshots/release-notes.png" width="280" alt="Release notes" /><br/><sub>Release notes</sub></td>
+  </tr>
+  <tr>
+    <td align="center"><img src="screenshots/notification.png" width="280" alt="Update notification" /><br/><sub>Update notification</sub></td>
+    <td align="center"><img src="screenshots/notif-reset.png" width="280" alt="Limit reset" /><br/><sub>Limit reset</sub></td>
   </tr>
   <tr>
     <td align="center"><img src="screenshots/notif-limit-80.png" width="280" alt="80% limit warning" /><br/><sub>80% limit warning</sub></td>
     <td align="center"><img src="screenshots/notif-limit-95.png" width="280" alt="95% limit warning" /><br/><sub>95% limit warning</sub></td>
   </tr>
-  <tr>
-    <td align="center"><img src="screenshots/notif-reset.png" width="280" alt="Limit reset" /><br/><sub>Limit reset</sub></td>
-    <td></td>
-  </tr>
 </table>
 
 <br/>

RELEASE_NOTES.md

@@ -1,4 +1,12 @@
-## What's new in v1.0.10
+## What's new in v1.1.3
 
-### Main window always opens on click
+### UI polish
-Closing the app while Settings was open would cause the next click to reopen straight to Settings. The app now always returns to the main window when reopened.
+- Limit headers now read "5 Hour Limit" and "7 Day Limit"
+- Tapping anywhere on the blue update banner opens the update window
+
+### Session Diary fix
+- Burn history is persisted across app launches — the sparkline populates immediately on first open instead of requiring a manual refresh
+
+### Window sizing fixes
+- The popover now resizes correctly when switching between the main view and settings
+- Background colour no longer shows through during the resize animation

version-beta.json

@@ -0,0 +1,5 @@
+{
+  "version": "1.1.3-beta.5",
+  "url": "https://github.com/superdooper86/claudechecker/releases/download/v1.1.3-beta.5/ClaudeChecker.zip",
+  "notes": "## What's new in v1.1.3\n\n### UI polish\n- Limit headers now read \"5 Hour Limit\" and \"7 Day Limit\" instead of \"5hr\"\n- Tapping anywhere on the blue update banner opens the update window\n\n### Session Diary fix\n- Burn history is persisted across app launches \u2014 the sparkline populates immediately on first open instead of requiring a manual refresh\n\n### Window sizing fixes\n- The popover now resizes correctly when switching between the main view and settings\n- Background colour no longer shows through during the resize animation"
+}

version-windows-beta.json

@@ -0,0 +1,5 @@
+{
+  "version": "0.0.0",
+  "url": "",
+  "notes": ""
+}

version-windows.json

@@ -0,0 +1,5 @@
+{
+  "version": "0.0.0",
+  "url": "",
+  "notes": ""
+}

version.json

@@ -1,5 +1,5 @@
 {
-  "version": "1.1.0",
+  "version": "1.1.3",
-  "url": "https://github.com/superdooper86/claudechecker/releases/download/v1.1.0/ClaudeChecker.zip",
+  "url": "https://github.com/superdooper86/claudechecker/releases/download/v1.1.3/ClaudeChecker.zip",
-  "notes": "## What's new in v1.1.0\n\n### Main window always opens on click\nClosing the app while Settings was open would cause the next click to reopen straight to Settings. The app now always returns to the main window when reopened."
+  "notes": "## What's new in v1.1.3\n\n### UI polish\n- Limit headers now read \"5 Hour Limit\" and \"7 Day Limit\"\n- Tapping anywhere on the blue update banner opens the update window\n\n### Session Diary fix\n- Burn history is persisted across app launches — the sparkline populates immediately on first open instead of requiring a manual refresh\n\n### Window sizing fixes\n- The popover now resizes correctly when switching between the main view and settings\n- Background colour no longer shows through during the resize animation"
 }

windows/App.xaml

@@ -0,0 +1,102 @@
+<Application x:Class="ClaudeCheckerWindows.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             ShutdownMode="OnExplicitShutdown">
+    <Application.Resources>
+        <SolidColorBrush x:Key="BackgroundBrush"    Color="#1C1C1E"/>
+        <SolidColorBrush x:Key="CardBrush"          Color="#2C2C2E"/>
+        <SolidColorBrush x:Key="AccentBrush"        Color="#F97316"/>
+        <SolidColorBrush x:Key="SecondaryBrush"     Color="#888888"/>
+        <SolidColorBrush x:Key="BorderBrush"        Color="#38383A"/>
+        <SolidColorBrush x:Key="BlueBrush"          Color="#3B82F6"/>
+
+        <Style x:Key="HeaderText" TargetType="TextBlock">
+            <Setter Property="FontSize"   Value="10"/>
+            <Setter Property="FontWeight" Value="SemiBold"/>
+            <Setter Property="Foreground" Value="{StaticResource SecondaryBrush}"/>
+        </Style>
+
+        <Style x:Key="IconButton" TargetType="Button">
+            <Setter Property="Background"  Value="Transparent"/>
+            <Setter Property="BorderBrush" Value="#33FFFFFF"/>
+            <Setter Property="BorderThickness" Value="0.5"/>
+            <Setter Property="Foreground"  Value="{StaticResource SecondaryBrush}"/>
+            <Setter Property="Width"       Value="26"/>
+            <Setter Property="Height"      Value="26"/>
+            <Setter Property="Cursor"      Value="Hand"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="Button">
+                        <Border Background="{TemplateBinding Background}"
+                                BorderBrush="{TemplateBinding BorderBrush}"
+                                BorderThickness="{TemplateBinding BorderThickness}"
+                                CornerRadius="5">
+                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        </Border>
+                        <ControlTemplate.Triggers>
+                            <Trigger Property="IsMouseOver" Value="True">
+                                <Setter Property="Background" Value="#1AFFFFFF"/>
+                            </Trigger>
+                        </ControlTemplate.Triggers>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <Style x:Key="PrimaryButton" TargetType="Button">
+            <Setter Property="Background"  Value="{StaticResource BlueBrush}"/>
+            <Setter Property="Foreground"  Value="White"/>
+            <Setter Property="BorderThickness" Value="0"/>
+            <Setter Property="Padding"     Value="14,6"/>
+            <Setter Property="FontSize"    Value="12"/>
+            <Setter Property="FontWeight"  Value="SemiBold"/>
+            <Setter Property="Cursor"      Value="Hand"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="Button">
+                        <Border Background="{TemplateBinding Background}" CornerRadius="6"
+                                Padding="{TemplateBinding Padding}">
+                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        </Border>
+                        <ControlTemplate.Triggers>
+                            <Trigger Property="IsMouseOver" Value="True">
+                                <Setter Property="Background" Value="#2563EB"/>
+                            </Trigger>
+                        </ControlTemplate.Triggers>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <Style x:Key="SmallButton" TargetType="Button">
+            <Setter Property="Background"    Value="Transparent"/>
+            <Setter Property="BorderBrush"   Value="#33FFFFFF"/>
+            <Setter Property="BorderThickness" Value="0.5"/>
+            <Setter Property="Foreground"    Value="{StaticResource SecondaryBrush}"/>
+            <Setter Property="Padding"       Value="8,4"/>
+            <Setter Property="FontSize"      Value="11"/>
+            <Setter Property="Cursor"        Value="Hand"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="Button">
+                        <Border Background="{TemplateBinding Background}"
+                                BorderBrush="{TemplateBinding BorderBrush}"
+                                BorderThickness="{TemplateBinding BorderThickness}"
+                                CornerRadius="5" Padding="{TemplateBinding Padding}">
+                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        </Border>
+                        <ControlTemplate.Triggers>
+                            <Trigger Property="IsMouseOver" Value="True">
+                                <Setter Property="Background" Value="#1AFFFFFF"/>
+                            </Trigger>
+                        </ControlTemplate.Triggers>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <Style TargetType="ScrollViewer">
+            <Setter Property="VerticalScrollBarVisibility" Value="Hidden"/>
+        </Style>
+    </Application.Resources>
+</Application>

windows/App.xaml.cs

@@ -0,0 +1,142 @@
+using System;
+using System.Drawing;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Forms;
+using System.Windows.Threading;
+using Application = System.Windows.Application;
+
+namespace ClaudeCheckerWindows;
+
+public partial class App : Application
+{
+    public static UsageViewModel ViewModel { get; } = new();
+    public static UpdateManager  Updater   { get; } = new();
+
+    private NotifyIcon?   _tray;
+    private PopupWindow?  _popup;
+    private DispatcherTimer? _timer;
+
+    protected override void OnStartup(StartupEventArgs e)
+    {
+        base.OnStartup(e);
+        SetupTray();
+        ScheduleTimer(ViewModel.RefreshInterval);
+
+        _ = Task.Run(async () =>
+        {
+            await Task.Delay(1000);
+            await ViewModel.RefreshAsync();
+            await Updater.CheckForUpdatesAsync();
+        });
+    }
+
+    private void SetupTray()
+    {
+        _tray = new NotifyIcon
+        {
+            Text    = "ClaudeChecker",
+            Visible = true,
+            Icon    = LoadIcon(),
+        };
+        _tray.MouseClick += (_, e) =>
+        {
+            if (e.Button == MouseButtons.Left)
+                TogglePopup();
+        };
+        _tray.ContextMenuStrip = BuildContextMenu();
+
+        ViewModel.PropertyChanged += (_, e) =>
+        {
+            if (e.PropertyName is nameof(UsageViewModel.Limits) or nameof(UsageViewModel.ShowInTaskbar))
+                UpdateTrayText();
+        };
+    }
+
+    private static Icon LoadIcon()
+    {
+        try { return new Icon("Assets/icon.ico"); }
+        catch { return SystemIcons.Application; }
+    }
+
+    private ContextMenuStrip BuildContextMenu()
+    {
+        var menu = new ContextMenuStrip();
+        menu.Items.Add("Show ClaudeChecker", null, (_, _) => ShowPopup());
+        menu.Items.Add(new ToolStripSeparator());
+        menu.Items.Add("Quit", null, (_, _) => Quit());
+        menu.BackColor = System.Drawing.Color.FromArgb(40, 40, 40);
+        menu.ForeColor = System.Drawing.Color.White;
+        return menu;
+    }
+
+    private void TogglePopup()
+    {
+        if (_popup == null || !_popup.IsVisible)
+            ShowPopup();
+        else
+            _popup.Hide();
+    }
+
+    private void ShowPopup()
+    {
+        if (_popup == null)
+        {
+            _popup = new PopupWindow();
+            _popup.Closed += (_, _) => _popup = null;
+        }
+
+        PositionPopup();
+        _popup.Show();
+        _popup.Activate();
+    }
+
+    private void PositionPopup()
+    {
+        if (_popup == null) return;
+        var workArea = SystemParameters.WorkArea;
+        _popup.Left  = workArea.Right  - _popup.Width  - 8;
+        _popup.Top   = workArea.Bottom - _popup.Height - 8;
+    }
+
+    public void ScheduleTimer(int seconds)
+    {
+        _timer?.Stop();
+        _timer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(seconds) };
+        _timer.Tick += async (_, _) =>
+        {
+            await ViewModel.RefreshAsync();
+            await Updater.CheckForUpdatesAsync();
+        };
+        _timer.Start();
+    }
+
+    private void UpdateTrayText()
+    {
+        if (_tray == null) return;
+        var limits = ViewModel.Limits;
+        if (ViewModel.ShowInTaskbar && limits.Count >= 2)
+        {
+            var fh = limits.Find(l => l.Window == WindowKind.FiveHour);
+            var sd = limits.Find(l => l.Window == WindowKind.SevenDay);
+            if (fh != null && sd != null && fh.IsLive)
+            {
+                _tray.Text = $"ClaudeChecker  {(int)fh.UsedPercent}%  {(int)sd.UsedPercent}%";
+                return;
+            }
+        }
+        _tray.Text = "ClaudeChecker";
+    }
+
+    private void Quit()
+    {
+        _tray?.Dispose();
+        Shutdown();
+    }
+
+    protected override void OnExit(ExitEventArgs e)
+    {
+        _tray?.Dispose();
+        base.OnExit(e);
+    }
+}

windows/ClaudeCheckerWindows.csproj

@@ -0,0 +1,39 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <UseWPF>true</UseWPF>
+    <UseWindowsForms>true</UseWindowsForms>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <AssemblyName>ClaudeChecker</AssemblyName>
+    <RootNamespace>ClaudeCheckerWindows</RootNamespace>
+    <ApplicationIcon>Assets\icon.ico</ApplicationIcon>
+    <Version>1.1.3</Version>
+    <AllowUnsafeBlocks>false</AllowUnsafeBlocks>
+    <Platforms>x64</Platforms>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.2651.64" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="Assets\icon.ico">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="Assets\icon.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+  <!-- App settings for user preferences -->
+  <ItemGroup>
+    <None Update="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+  </ItemGroup>
+
+</Project>

windows/Controls/GaugeControl.cs

@@ -0,0 +1,91 @@
+using System;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Media;
+
+namespace ClaudeCheckerWindows.Controls;
+
+public class GaugeControl : FrameworkElement
+{
+    public static readonly DependencyProperty PercentProperty =
+        DependencyProperty.Register(nameof(Percent), typeof(double), typeof(GaugeControl),
+            new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.AffectsRender));
+
+    public static readonly DependencyProperty AccentProperty =
+        DependencyProperty.Register(nameof(Accent), typeof(Brush), typeof(GaugeControl),
+            new FrameworkPropertyMetadata(Brushes.Orange, FrameworkPropertyMetadataOptions.AffectsRender));
+
+    public double Percent { get => (double)GetValue(PercentProperty); set => SetValue(PercentProperty, value); }
+    public Brush  Accent  { get => (Brush)GetValue(AccentProperty);   set => SetValue(AccentProperty, value); }
+
+    // Arc sweeps 270° starting at 135° (bottom-left to bottom-right, like macOS version)
+    private const double StartAngleDeg = 135;
+    private const double SweepDeg      = 270;
+    private const double StrokeWidth   = 6;
+
+    protected override void OnRender(DrawingContext dc)
+    {
+        var cx     = RenderSize.Width  / 2;
+        var cy     = RenderSize.Height / 2;
+        var radius = Math.Min(cx, cy) - StrokeWidth / 2 - 1;
+
+        // Track
+        DrawArc(dc, cx, cy, radius, StartAngleDeg, SweepDeg,
+            new Pen(new SolidColorBrush(Color.FromArgb(28, 255, 255, 255)), StrokeWidth));
+
+        // Fill
+        if (Percent > 0)
+        {
+            var sweep = SweepDeg * (Percent / 100.0);
+            DrawArc(dc, cx, cy, radius, StartAngleDeg, sweep, new Pen(Accent, StrokeWidth));
+        }
+
+        var dpi  = VisualTreeHelper.GetDpi(this).PixelsPerDip;
+
+        // Percent label
+        var pctText = new FormattedText(
+            $"{(int)Math.Round(Percent)}%",
+            CultureInfo.CurrentCulture,
+            FlowDirection.LeftToRight,
+            new Typeface(new FontFamily("Segoe UI"), FontStyles.Normal, FontWeights.Bold, FontStretches.Normal),
+            14, Brushes.White, dpi);
+
+        dc.DrawText(pctText, new Point(cx - pctText.Width / 2, cy - pctText.Height - 1));
+
+        // Sub-label
+        var sub = new FormattedText(
+            "Updated\nnow",
+            CultureInfo.CurrentCulture,
+            FlowDirection.LeftToRight,
+            new Typeface("Segoe UI"),
+            7, new SolidColorBrush(Color.FromRgb(0x88, 0x88, 0x88)), dpi);
+        sub.TextAlignment = TextAlignment.Center;
+
+        dc.DrawText(sub, new Point(cx - sub.Width / 2, cy + 2));
+    }
+
+    private static void DrawArc(DrawingContext dc, double cx, double cy, double r,
+        double startDeg, double sweepDeg, Pen pen)
+    {
+        if (sweepDeg <= 0) return;
+
+        var start    = PointOnCircle(cx, cy, r, startDeg);
+        var end      = PointOnCircle(cx, cy, r, startDeg + sweepDeg);
+        var isLarge  = sweepDeg > 180;
+
+        var geo = new StreamGeometry();
+        using (var ctx = geo.Open())
+        {
+            ctx.BeginFigure(start, false, false);
+            ctx.ArcTo(end, new Size(r, r), 0, isLarge, SweepDirection.Clockwise, true, false);
+        }
+        geo.Freeze();
+        dc.DrawGeometry(null, pen, geo);
+    }
+
+    private static Point PointOnCircle(double cx, double cy, double r, double deg)
+    {
+        var rad = deg * Math.PI / 180;
+        return new Point(cx + r * Math.Cos(rad), cy + r * Math.Sin(rad));
+    }
+}

windows/Controls/SparklineControl.cs

@@ -0,0 +1,61 @@
+using System;
+using System.Collections.Generic;
+using System.Windows;
+using System.Windows.Media;
+
+namespace ClaudeCheckerWindows.Controls;
+
+public class SparklineControl : FrameworkElement
+{
+    public static readonly DependencyProperty DataProperty =
+        DependencyProperty.Register(nameof(Data), typeof(IList<double>), typeof(SparklineControl),
+            new FrameworkPropertyMetadata(null, FrameworkPropertyMetadataOptions.AffectsRender));
+
+    public static readonly DependencyProperty LineColorProperty =
+        DependencyProperty.Register(nameof(LineColor), typeof(Color), typeof(SparklineControl),
+            new FrameworkPropertyMetadata(Colors.Orange, FrameworkPropertyMetadataOptions.AffectsRender));
+
+    public IList<double>? Data      { get => (IList<double>?)GetValue(DataProperty); set => SetValue(DataProperty, value); }
+    public Color          LineColor { get => (Color)GetValue(LineColorProperty);      set => SetValue(LineColorProperty, value); }
+
+    protected override void OnRender(DrawingContext dc)
+    {
+        var data = Data;
+        if (data == null || data.Count < 1) return;
+
+        var plot = data.Count == 1 ? new[] { data[0], data[0] } : [.. data];
+
+        var w    = RenderSize.Width;
+        var h    = RenderSize.Height;
+        var minV = double.MaxValue;
+        var maxV = double.MinValue;
+
+        foreach (var v in plot) { minV = Math.Min(minV, v); maxV = Math.Max(maxV, v); }
+        var range = Math.Max(maxV - minV, 1);
+
+        Point Pt(int i) => new(
+            i / (double)(plot.Count - 1) * w,
+            h - (plot[i] - minV) / range * (h - 6) - 3);
+
+        // Fill
+        var fill = new StreamGeometry();
+        using (var ctx = fill.Open())
+        {
+            ctx.BeginFigure(new Point(0, h), true, true);
+            for (var i = 0; i < plot.Count; i++) ctx.LineTo(Pt(i), true, false);
+            ctx.LineTo(new Point(w, h), true, false);
+        }
+        fill.Freeze();
+        dc.DrawGeometry(new SolidColorBrush(Color.FromArgb(26, LineColor.R, LineColor.G, LineColor.B)), null, fill);
+
+        // Line
+        var line = new StreamGeometry();
+        using (var ctx = line.Open())
+        {
+            ctx.BeginFigure(Pt(0), false, false);
+            for (var i = 1; i < plot.Count; i++) ctx.LineTo(Pt(i), true, false);
+        }
+        line.Freeze();
+        dc.DrawGeometry(null, new Pen(new SolidColorBrush(LineColor), 1.5) { LineJoin = PenLineJoin.Round }, line);
+    }
+}

windows/LoginWindow.xaml

@@ -0,0 +1,42 @@
+<Window x:Class="ClaudeCheckerWindows.LoginWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:wv2="clr-namespace:Microsoft.Web.WebView2.Wpf;assembly=Microsoft.Web.WebView2.Wpf"
+        Title="Sign in to claude.ai"
+        Width="520" Height="680"
+        WindowStartupLocation="CenterOwner"
+        Background="#1C1C1E">
+
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="Auto"/>
+        </Grid.RowDefinitions>
+
+        <Border Grid.Row="0" Background="#2C2C2E" Padding="16,12">
+            <StackPanel>
+                <TextBlock Text="Sign in to claude.ai" FontSize="14" FontWeight="SemiBold"
+                           Foreground="White"/>
+                <TextBlock Text="Sign in below. ClaudeChecker will save your session cookies to fetch usage data."
+                           FontSize="11" Foreground="#888888" TextWrapping="Wrap" Margin="0,4,0,0"/>
+            </StackPanel>
+        </Border>
+
+        <wv2:WebView2 x:Name="Browser" Grid.Row="1"/>
+
+        <Border Grid.Row="2" Background="#2C2C2E" Padding="16,10">
+            <Grid>
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="*"/>
+                    <ColumnDefinition Width="Auto"/>
+                </Grid.ColumnDefinitions>
+                <TextBlock x:Name="StatusText" FontSize="11" Foreground="#888888"
+                           VerticalAlignment="Center" Text="Waiting for sign-in…"/>
+                <Button Grid.Column="1" Content="Done — I'm signed in"
+                        Style="{StaticResource PrimaryButton}" Click="Done_Click"
+                        x:Name="DoneButton" IsEnabled="False"/>
+            </Grid>
+        </Border>
+    </Grid>
+</Window>

windows/LoginWindow.xaml.cs

@@ -0,0 +1,53 @@
+using Microsoft.Web.WebView2.Core;
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace ClaudeCheckerWindows;
+
+public partial class LoginWindow : Window
+{
+    public LoginWindow()
+    {
+        InitializeComponent();
+        Loaded += async (_, _) => await InitBrowserAsync();
+    }
+
+    private async Task InitBrowserAsync()
+    {
+        var env = await CoreWebView2Environment.CreateAsync(userDataFolder:
+            System.IO.Path.Combine(
+                Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+                "ClaudeChecker", "WebView2"));
+
+        await Browser.EnsureCoreWebView2Async(env);
+        Browser.CoreWebView2.Navigate("https://claude.ai");
+
+        Browser.CoreWebView2.NavigationCompleted += async (_, e) =>
+        {
+            if (!e.IsSuccess) return;
+            var uri = Browser.CoreWebView2.Source;
+            if (uri.Contains("claude.ai") && !uri.Contains("/login"))
+            {
+                // Likely signed in — enable done button
+                var cookies = await Browser.CoreWebView2.CookieManager.GetCookiesAsync("https://claude.ai");
+                var hasSess = cookies.Any(c => c.Name.Contains("session") || c.Name.Contains("sk-"));
+                await Dispatcher.InvokeAsync(() =>
+                {
+                    DoneButton.IsEnabled = hasSess || uri.Contains("/chats") || uri.Contains("/new");
+                    StatusText.Text      = DoneButton.IsEnabled
+                        ? "Signed in! Click Done to continue."
+                        : "Waiting for sign-in…";
+                });
+            }
+        };
+    }
+
+    private async void Done_Click(object sender, RoutedEventArgs e)
+    {
+        var cookies = await Browser.CoreWebView2.CookieManager.GetCookiesAsync("https://claude.ai");
+        UsageViewModel.SaveCookies(cookies);
+        DialogResult = true;
+    }
+}

windows/Models.cs

@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using System.Text.Json.Serialization;
+
+namespace ClaudeCheckerWindows;
+
+public enum WindowKind { FiveHour, SevenDay }
+
+public class AgentLimit
+{
+    public WindowKind Window { get; init; }
+    public double UsedPercent { get; set; }
+    public string TimeRemaining { get; set; } = "";
+    public DateTime ResetDate { get; set; }
+    public double BurnRate { get; set; }
+    public List<double> BurnHistory { get; set; } = [];
+    public bool IsLive { get; set; }
+    public string UsageLabel => UsedPercent switch { < 33 => "low", < 66 => "med", _ => "high" };
+    public string WindowLabel => Window == WindowKind.FiveHour ? "5 HOUR LIMIT" : "7 DAY LIMIT";
+}
+
+public class UsageResponse
+{
+    [JsonPropertyName("claude_ai_default_5h")] public WindowData? FiveHour { get; set; }
+    [JsonPropertyName("claude_ai_default")]    public WindowData? SevenDay  { get; set; }
+}
+
+public class WindowData
+{
+    [JsonPropertyName("utilization")] public double Utilization { get; set; }
+    [JsonPropertyName("resets_at")]   public string? ResetsAt   { get; set; }
+}
+
+public class BootstrapResponse
+{
+    [JsonPropertyName("account")] public AccountInfo? Account { get; set; }
+}
+
+public class AccountInfo
+{
+    [JsonPropertyName("email_address")] public string? EmailAddress { get; set; }
+}
+
+public class OverageSpendLimit
+{
+    [JsonPropertyName("monthly_credit_limit")] public double? MonthlyCreditLimit { get; set; }
+    [JsonPropertyName("used_credits")]         public double? UsedCredits         { get; set; }
+    [JsonPropertyName("currency")]             public string? Currency            { get; set; }
+}
+
+public class PrepaidCredits
+{
+    [JsonPropertyName("amount")]   public double? Amount   { get; set; }
+    [JsonPropertyName("currency")] public string? Currency { get; set; }
+}
+
+public class VersionInfo
+{
+    [JsonPropertyName("version")] public string  Version { get; set; } = "";
+    [JsonPropertyName("url")]     public string  Url     { get; set; } = "";
+    [JsonPropertyName("notes")]   public string? Notes   { get; set; }
+}

windows/PopupWindow.xaml

@@ -0,0 +1,251 @@
+<Window x:Class="ClaudeCheckerWindows.PopupWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:ctrl="clr-namespace:ClaudeCheckerWindows.Controls"
+        Title="ClaudeChecker"
+        Width="480"
+        SizeToContent="Height"
+        WindowStyle="None"
+        AllowsTransparency="True"
+        Background="Transparent"
+        ShowInTaskbar="False"
+        Topmost="True"
+        ResizeMode="NoResize">
+
+    <Border Background="{StaticResource BackgroundBrush}"
+            CornerRadius="12"
+            BorderBrush="{StaticResource BorderBrush}"
+            BorderThickness="0.5">
+        <Border.Effect>
+            <DropShadowEffect BlurRadius="24" ShadowDepth="4" Opacity="0.5" Color="Black"/>
+        </Border.Effect>
+
+        <Grid>
+            <!-- Main panel -->
+            <StackPanel x:Name="MainPanel">
+
+                <!-- Header -->
+                <Grid Margin="16,11">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="Auto"/>
+                        <ColumnDefinition Width="*"/>
+                        <ColumnDefinition Width="Auto"/>
+                        <ColumnDefinition Width="6"/>
+                        <ColumnDefinition Width="Auto"/>
+                    </Grid.ColumnDefinitions>
+
+                    <Image Grid.Column="0" Width="24" Height="24"
+                           Source="Assets/icon.png" RenderOptions.BitmapScalingMode="HighQuality"/>
+
+                    <TextBlock Grid.Column="1" Text="ClaudeChecker"
+                               FontSize="14" FontWeight="SemiBold" Foreground="White"
+                               VerticalAlignment="Center" Margin="10,0,0,0"/>
+
+                    <Button Grid.Column="2" Style="{StaticResource IconButton}"
+                            Click="Settings_Click" x:Name="SettingsButton">
+                        <TextBlock Text="⚙" FontSize="11" Foreground="{StaticResource SecondaryBrush}"/>
+                    </Button>
+                    <Button Grid.Column="4" Style="{StaticResource IconButton}"
+                            Click="Close_Click">
+                        <TextBlock Text="✕" FontSize="11" Foreground="{StaticResource SecondaryBrush}"/>
+                    </Button>
+                </Grid>
+
+                <Rectangle Height="0.5" Fill="{StaticResource BorderBrush}" Opacity="0.4"/>
+
+                <!-- Update banner -->
+                <Border x:Name="UpdateBanner" Visibility="Collapsed"
+                        Background="#0A3B82F6" Cursor="Hand" MouseLeftButtonUp="UpdateBanner_Click">
+                    <Grid Margin="16,10">
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="Auto"/>
+                            <ColumnDefinition Width="*"/>
+                            <ColumnDefinition Width="Auto"/>
+                        </Grid.ColumnDefinitions>
+                        <TextBlock Grid.Column="0" Text="⬇" FontSize="14"
+                                   Foreground="{StaticResource BlueBrush}" VerticalAlignment="Center"/>
+                        <StackPanel Grid.Column="1" Margin="10,0">
+                            <TextBlock x:Name="UpdateBannerTitle" FontSize="12" FontWeight="SemiBold" Foreground="White"/>
+                            <TextBlock Text="Tap to view what's new &amp; install."
+                                       FontSize="11" Foreground="{StaticResource SecondaryBrush}"/>
+                        </StackPanel>
+                        <Button Grid.Column="2" Content="Update"
+                                Style="{StaticResource SmallButton}"
+                                Background="{StaticResource BlueBrush}"
+                                Foreground="White" Click="UpdateBanner_Click"/>
+                    </Grid>
+                    <Border.Effect>
+                        <DropShadowEffect ShadowDepth="0" BlurRadius="0" Opacity="0"/>
+                    </Border.Effect>
+                </Border>
+                <Rectangle x:Name="UpdateBannerDiv" Height="0.5" Fill="{StaticResource BorderBrush}"
+                           Opacity="0.3" Visibility="Collapsed"/>
+
+                <!-- Limit cards -->
+                <ScrollViewer VerticalScrollBarVisibility="Hidden" MaxHeight="600">
+                    <StackPanel x:Name="CardsPanel" Margin="0,0,0,4"/>
+                </ScrollViewer>
+
+                <Rectangle Height="0.5" Fill="{StaticResource BorderBrush}" Opacity="0.3"/>
+
+                <!-- Footer -->
+                <Grid Margin="16,9">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="*"/>
+                        <ColumnDefinition Width="Auto"/>
+                        <ColumnDefinition Width="8"/>
+                        <ColumnDefinition Width="Auto"/>
+                    </Grid.ColumnDefinitions>
+                    <TextBlock x:Name="LastUpdatedText" Grid.Column="0"
+                               FontSize="10" Foreground="#60888888" VerticalAlignment="Center"/>
+                    <ProgressBar x:Name="LoadingBar" Grid.Column="1"
+                                 IsIndeterminate="True" Width="14" Height="14"
+                                 Visibility="Collapsed" Style="{x:Null}"/>
+                    <Button Grid.Column="3" Content="↻  Refresh"
+                            Style="{StaticResource SmallButton}" Click="Refresh_Click"/>
+                </Grid>
+            </StackPanel>
+
+            <!-- Settings panel -->
+            <Border x:Name="SettingsPanel" Visibility="Collapsed"
+                    Background="{StaticResource BackgroundBrush}" CornerRadius="12">
+                <ScrollViewer VerticalScrollBarVisibility="Auto" MaxHeight="700">
+                    <StackPanel Margin="16">
+
+                        <Button Content="← Back" HorizontalAlignment="Left"
+                                Style="{StaticResource SmallButton}"
+                                BorderThickness="0" Foreground="{StaticResource BlueBrush}"
+                                Click="BackFromSettings_Click" Margin="0,0,0,12"/>
+
+                        <TextBlock Text="Settings" FontSize="16" FontWeight="SemiBold"
+                                   Foreground="White" Margin="0,0,0,16"/>
+
+                        <!-- Auth -->
+                        <TextBlock Text="🔐  Authentication" Style="{StaticResource HeaderText}" Margin="0,0,0,8"/>
+                        <StackPanel x:Name="AuthPanel" Margin="0,0,0,8"/>
+                        <TextBlock Text="Your session is stored locally and persists across restarts."
+                                   FontSize="11" Foreground="{StaticResource SecondaryBrush}"
+                                   TextWrapping="Wrap" Margin="0,0,0,8"/>
+                        <StackPanel Orientation="Horizontal" Margin="0,0,0,16">
+                            <Button x:Name="SignInButton" Content="Sign In"
+                                    Style="{StaticResource SmallButton}" Click="SignIn_Click" Margin="0,0,8,0"/>
+                            <Button x:Name="SignOutButton" Content="Sign Out"
+                                    Style="{StaticResource SmallButton}" Click="SignOut_Click"
+                                    Foreground="#EF4444" Visibility="Collapsed"/>
+                        </StackPanel>
+
+                        <Rectangle Height="0.5" Fill="{StaticResource BorderBrush}" Margin="0,0,0,16"/>
+
+                        <!-- Beta channel -->
+                        <TextBlock Text="📡  Update channel" Style="{StaticResource HeaderText}" Margin="0,0,0,8"/>
+                        <Grid Margin="0,0,0,16">
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="*"/>
+                                <ColumnDefinition Width="Auto"/>
+                            </Grid.ColumnDefinitions>
+                            <StackPanel>
+                                <TextBlock Text="Beta updates" FontSize="12" Foreground="White"/>
+                                <TextBlock Text="Receive early access builds — may be less stable"
+                                           FontSize="11" Foreground="{StaticResource SecondaryBrush}"/>
+                            </StackPanel>
+                            <CheckBox Grid.Column="1" x:Name="BetaToggle" VerticalAlignment="Center"
+                                      Checked="BetaToggle_Changed" Unchecked="BetaToggle_Changed"/>
+                        </Grid>
+
+                        <Rectangle Height="0.5" Fill="{StaticResource BorderBrush}" Margin="0,0,0,16"/>
+
+                        <!-- Refresh interval -->
+                        <TextBlock Text="⏱  Auto-refresh interval" Style="{StaticResource HeaderText}" Margin="0,0,0,8"/>
+                        <ComboBox x:Name="RefreshPicker" SelectionChanged="RefreshPicker_Changed"
+                                  Margin="0,0,0,16" FontSize="12"/>
+
+                        <Rectangle Height="0.5" Fill="{StaticResource BorderBrush}" Margin="0,0,0,16"/>
+
+                        <!-- About -->
+                        <Grid>
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="Auto"/>
+                                <ColumnDefinition Width="*"/>
+                                <ColumnDefinition Width="Auto"/>
+                            </Grid.ColumnDefinitions>
+                            <Image Width="36" Height="36" Source="Assets/icon.png"
+                                   RenderOptions.BitmapScalingMode="HighQuality" Margin="0,0,12,0"/>
+                            <StackPanel Grid.Column="1" VerticalAlignment="Center">
+                                <StackPanel Orientation="Horizontal">
+                                    <TextBlock Text="ClaudeChecker" FontSize="12" FontWeight="SemiBold" Foreground="White"/>
+                                    <Border Background="#0FFFFFFF" CornerRadius="4" Margin="6,0,0,0" Padding="5,1">
+                                        <TextBlock x:Name="VersionLabel" FontSize="11"
+                                                   Foreground="{StaticResource SecondaryBrush}"
+                                                   FontFamily="Consolas"/>
+                                    </Border>
+                                </StackPanel>
+                                <TextBlock Text="Built by superdooper86 &amp; claude"
+                                           FontSize="11" Foreground="{StaticResource SecondaryBrush}"/>
+                            </StackPanel>
+                            <Button Grid.Column="2" x:Name="CheckUpdateButton"
+                                    Style="{StaticResource SmallButton}" Click="CheckUpdate_Click"
+                                    VerticalAlignment="Center"/>
+                        </Grid>
+
+                    </StackPanel>
+                </ScrollViewer>
+            </Border>
+
+            <!-- Update sheet -->
+            <Border x:Name="UpdatePanel" Visibility="Collapsed"
+                    Background="{StaticResource BackgroundBrush}" CornerRadius="12">
+                <StackPanel>
+                    <Grid Margin="16,12">
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="*"/>
+                            <ColumnDefinition Width="Auto"/>
+                        </Grid.ColumnDefinitions>
+                        <TextBlock Text="Update ClaudeChecker" FontSize="14" FontWeight="SemiBold"
+                                   Foreground="White" VerticalAlignment="Center"/>
+                        <Button Grid.Column="1" Content="Not Now" Style="{StaticResource SmallButton}"
+                                Click="CloseUpdate_Click" x:Name="NotNowButton"/>
+                    </Grid>
+                    <Rectangle Height="0.5" Fill="{StaticResource BorderBrush}"/>
+                    <StackPanel Margin="20">
+                        <Grid Margin="0,0,0,16">
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="Auto"/>
+                                <ColumnDefinition Width="*"/>
+                            </Grid.ColumnDefinitions>
+                            <Image Width="48" Height="48" Source="Assets/icon.png"
+                                   RenderOptions.BitmapScalingMode="HighQuality" Margin="0,0,14,0"/>
+                            <StackPanel Grid.Column="1" VerticalAlignment="Center">
+                                <StackPanel Orientation="Horizontal">
+                                    <TextBlock x:Name="CurrentVerLabel" FontSize="12" FontFamily="Consolas"
+                                               Foreground="{StaticResource SecondaryBrush}"/>
+                                    <TextBlock Text=" → " FontSize="10"
+                                               Foreground="{StaticResource SecondaryBrush}" VerticalAlignment="Center"/>
+                                    <TextBlock x:Name="NewVerLabel" FontSize="13" FontWeight="SemiBold"
+                                               FontFamily="Consolas" Foreground="{StaticResource BlueBrush}"/>
+                                </StackPanel>
+                                <TextBlock x:Name="ReleaseNotesText" FontSize="11" TextWrapping="Wrap"
+                                           Foreground="{StaticResource SecondaryBrush}" Margin="0,4,0,0"
+                                           MaxHeight="180"/>
+                            </StackPanel>
+                        </Grid>
+
+                        <TextBlock x:Name="UpdateStatusText" Foreground="{StaticResource SecondaryBrush}"
+                                   FontSize="11" TextWrapping="Wrap" TextAlignment="Center"
+                                   Visibility="Collapsed" Margin="0,0,0,10"/>
+
+                        <ProgressBar x:Name="UpdateProgress" Visibility="Collapsed"
+                                     Height="4" Margin="0,0,0,12" Foreground="{StaticResource BlueBrush}"/>
+
+                        <TextBlock Text="ClaudeChecker will download the update, replace itself, and relaunch automatically."
+                                   FontSize="11" Foreground="{StaticResource SecondaryBrush}"
+                                   TextWrapping="Wrap" TextAlignment="Center" Margin="0,0,0,12"/>
+
+                        <Button x:Name="InstallButton" Content="⬇  Install Update"
+                                Style="{StaticResource PrimaryButton}" HorizontalAlignment="Stretch"
+                                Click="Install_Click"/>
+                    </StackPanel>
+                </StackPanel>
+            </Border>
+        </Grid>
+    </Border>
+</Window>

windows/PopupWindow.xaml.cs

@@ -0,0 +1,338 @@
+using ClaudeCheckerWindows.Controls;
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Windows.Threading;
+
+namespace ClaudeCheckerWindows;
+
+public partial class PopupWindow : Window
+{
+    private static readonly UsageViewModel VM      = App.ViewModel;
+    private static readonly UpdateManager  Updater = App.Updater;
+    private readonly DispatcherTimer _clockTimer;
+
+    public PopupWindow()
+    {
+        InitializeComponent();
+
+        VM.PropertyChanged      += (_, e) => Dispatcher.InvokeAsync(() => OnVmChanged(e.PropertyName));
+        Updater.PropertyChanged += (_, e) => Dispatcher.InvokeAsync(() => OnUpdaterChanged(e.PropertyName));
+
+        _clockTimer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(5) };
+        _clockTimer.Tick += (_, _) => UpdateFooter();
+        _clockTimer.Start();
+
+        InitSettings();
+        RebuildCards();
+        UpdateBannerState();
+        UpdateFooter();
+
+        Deactivated += (_, _) => Hide();
+    }
+
+    // ── Card rendering ───────────────────────────────────────────────
+
+    private void RebuildCards()
+    {
+        CardsPanel.Children.Clear();
+        foreach (var limit in VM.Limits)
+            CardsPanel.Children.Add(BuildCard(limit));
+    }
+
+    private static UIElement BuildCard(AgentLimit limit)
+    {
+        var accent     = new SolidColorBrush(Color.FromRgb(0xF9, 0x73, 0x16));
+        var secondary  = (SolidColorBrush)Application.Current.Resources["SecondaryBrush"];
+
+        // Gauge
+        var gauge = new GaugeControl { Width = 76, Height = 76, Percent = limit.UsedPercent, Accent = accent };
+
+        // Live badge
+        var liveBadge = new Border
+        {
+            Background   = new SolidColorBrush(Color.FromArgb(26, 0, 200, 0)),
+            CornerRadius = new CornerRadius(4),
+            Padding      = new Thickness(6, 2, 6, 2),
+            Margin       = new Thickness(0, 0, 6, 0),
+            Visibility   = limit.IsLive ? Visibility.Visible : Visibility.Collapsed,
+            Child        = new TextBlock { Text = "Live", FontSize = 10, FontWeight = FontWeights.Medium,
+                               Foreground = new SolidColorBrush(Colors.LightGreen) }
+        };
+
+        // Usage badge
+        var usageBadge = new Border
+        {
+            Background   = new SolidColorBrush(Color.FromArgb(15, 255, 255, 255)),
+            CornerRadius = new CornerRadius(4),
+            Padding      = new Thickness(6, 2, 6, 2),
+            Child        = new TextBlock { Text = $"Usg: {limit.UsageLabel}", FontSize = 10,
+                               FontWeight = FontWeights.Medium, Foreground = secondary }
+        };
+
+        // Header row: Claude · Pro | [Live] [Usg]
+        var badgeStack = new StackPanel { Orientation = Orientation.Horizontal };
+        badgeStack.Children.Add(liveBadge);
+        badgeStack.Children.Add(usageBadge);
+
+        var nameStack = new StackPanel { Orientation = Orientation.Horizontal, VerticalAlignment = VerticalAlignment.Center };
+        nameStack.Children.Add(new TextBlock { Text = "✦", FontSize = 11, Foreground = accent, VerticalAlignment = VerticalAlignment.Center });
+        nameStack.Children.Add(new TextBlock { Text = "Claude", FontSize = 13, FontWeight = FontWeights.SemiBold,
+            Foreground = Brushes.White, Margin = new Thickness(6, 0, 0, 0), VerticalAlignment = VerticalAlignment.Center });
+        nameStack.Children.Add(new TextBlock { Text = $"·  {VM.PlanLabel}", FontSize = 11,
+            Foreground = secondary, Margin = new Thickness(6, 0, 0, 0), VerticalAlignment = VerticalAlignment.Center });
+
+        var headerRow = new Grid();
+        headerRow.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });
+        headerRow.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto });
+        Grid.SetColumn(nameStack,  0);
+        Grid.SetColumn(badgeStack, 1);
+        headerRow.Children.Add(nameStack);
+        headerRow.Children.Add(badgeStack);
+
+        // Progress bar
+        var progress = new ProgressBar
+        {
+            Value = limit.UsedPercent, Maximum = 100, Height = 4,
+            Margin = new Thickness(0, 4, 0, 4),
+            Foreground = accent,
+            Background = new SolidColorBrush(Color.FromArgb(18, 255, 255, 255)),
+            BorderThickness = new Thickness(0),
+        };
+
+        // Time row
+        var timeStack = new StackPanel { Orientation = Orientation.Horizontal, VerticalAlignment = VerticalAlignment.Center };
+        timeStack.Children.Add(new TextBlock { Text = "⏱ ", FontSize = 10, Foreground = secondary, VerticalAlignment = VerticalAlignment.Center });
+        timeStack.Children.Add(new TextBlock { Text = limit.TimeRemaining, FontSize = 12,
+            FontWeight = FontWeights.Medium, Foreground = Brushes.White, VerticalAlignment = VerticalAlignment.Center });
+
+        var resetText = new TextBlock
+        {
+            Text = $"Resets {limit.ResetDate:d MMM yyyy} at {limit.ResetDate:HH:mm}",
+            FontSize = 11, Foreground = secondary, VerticalAlignment = VerticalAlignment.Center
+        };
+
+        var timeRow = new Grid();
+        timeRow.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });
+        timeRow.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto });
+        Grid.SetColumn(timeStack,  0);
+        Grid.SetColumn(resetText,  1);
+        timeRow.Children.Add(timeStack);
+        timeRow.Children.Add(resetText);
+
+        // Sparkline
+        var sparkline = new SparklineControl
+        {
+            Height = 28, Margin = new Thickness(0, 8, 0, 0), LineColor = Color.FromRgb(0xF9, 0x73, 0x16),
+            Data = limit.BurnHistory.Count > 0 ? limit.BurnHistory : null,
+        };
+
+        // Info panel
+        var infoPanel = new StackPanel { VerticalAlignment = VerticalAlignment.Center };
+        infoPanel.Children.Add(headerRow);
+        infoPanel.Children.Add(progress);
+        infoPanel.Children.Add(timeRow);
+        infoPanel.Children.Add(sparkline);
+
+        // Card content grid
+        var cardGrid = new Grid { Margin = new Thickness(16, 12, 16, 12) };
+        cardGrid.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto });
+        cardGrid.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(16, GridUnitType.Pixel) });
+        cardGrid.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(1, GridUnitType.Star) });
+        Grid.SetColumn(gauge,     0);
+        Grid.SetColumn(infoPanel, 2);
+        cardGrid.Children.Add(gauge);
+        cardGrid.Children.Add(infoPanel);
+
+        var card = new Border
+        {
+            Background      = (SolidColorBrush)Application.Current.Resources["CardBrush"],
+            CornerRadius    = new CornerRadius(8),
+            BorderBrush     = new SolidColorBrush(Color.FromArgb(20, 255, 255, 255)),
+            BorderThickness = new Thickness(0.5),
+            Margin          = new Thickness(8, 0, 8, 0),
+            Child           = cardGrid,
+        };
+
+        var sectionLabel = new TextBlock
+        {
+            Text   = limit.WindowLabel,
+            Style  = (Style)Application.Current.Resources["HeaderText"],
+            Margin = new Thickness(16, 10, 16, 4),
+        };
+
+        var section = new StackPanel();
+        section.Children.Add(sectionLabel);
+        section.Children.Add(card);
+        return section;
+    }
+
+    // ── State updates ────────────────────────────────────────────────
+
+    private void OnVmChanged(string? prop)
+    {
+        if (prop is nameof(UsageViewModel.Limits) or nameof(UsageViewModel.IsLoading)
+                 or nameof(UsageViewModel.LastUpdated) or nameof(UsageViewModel.ErrorMessage))
+        {
+            RebuildCards();
+            UpdateFooter();
+        }
+    }
+
+    private void OnUpdaterChanged(string? prop)
+    {
+        if (prop is nameof(UpdateManager.UpdateAvailable) or nameof(UpdateManager.LatestVersion))
+            UpdateBannerState();
+        if (prop is nameof(UpdateManager.DownloadProgress))
+            UpdateProgress.Value = Updater.DownloadProgress * 100;
+        if (prop is nameof(UpdateManager.StatusMessage))
+            UpdateStatusText.Text = Updater.StatusMessage;
+        if (prop is nameof(UpdateManager.UpdateComplete) && Updater.UpdateComplete)
+            InstallButton.Visibility = Visibility.Collapsed;
+    }
+
+    private void UpdateBannerState()
+    {
+        var visible = Updater.UpdateAvailable;
+        UpdateBanner.Visibility    = visible ? Visibility.Visible : Visibility.Collapsed;
+        UpdateBannerDiv.Visibility = visible ? Visibility.Visible : Visibility.Collapsed;
+        if (visible) UpdateBannerTitle.Text = $"Update available — v{Updater.LatestVersion}";
+    }
+
+    private void UpdateFooter()
+    {
+        if (VM.LastUpdated.HasValue)
+        {
+            var diff = DateTime.Now - VM.LastUpdated.Value;
+            LastUpdatedText.Text = diff.TotalSeconds < 10 ? "Updated just now"
+                                                          : $"Updated {(int)diff.TotalSeconds}s ago";
+        }
+        else
+        {
+            LastUpdatedText.Text = "Not yet updated";
+        }
+        LoadingBar.Visibility = VM.IsLoading ? Visibility.Visible : Visibility.Collapsed;
+    }
+
+    // ── Settings ─────────────────────────────────────────────────────
+
+    private void InitSettings()
+    {
+        VersionLabel.Text    = $"v{Updater.CurrentVersion}";
+        BetaToggle.IsChecked = Updater.BetaChannel;
+        CheckUpdateButton.Content = Updater.UpdateAvailable ? "Install" : "Check";
+
+        var intervals = new[] { ("1 min", 60), ("2 min", 120), ("3 min", 180),
+                                ("4 min", 240), ("5 min", 300), ("10 min", 600) };
+        RefreshPicker.ItemsSource        = intervals;
+        RefreshPicker.DisplayMemberPath  = "Item1";
+        var idx = Array.FindIndex(intervals, x => x.Item2 == VM.RefreshInterval);
+        RefreshPicker.SelectedIndex      = idx < 0 ? 1 : idx;
+
+        AuthPanel.Children.Clear();
+        var dot = new System.Windows.Shapes.Ellipse
+        {
+            Width = 7, Height = 7, Margin = new Thickness(0, 0, 6, 0),
+            Fill = VM.IsSignedIn ? Brushes.LimeGreen : Brushes.Orange,
+            VerticalAlignment = VerticalAlignment.Center,
+        };
+        var label = new TextBlock
+        {
+            Text = VM.IsSignedIn ? $"Signed in — {VM.UserEmail}" : "Not signed in",
+            FontSize = 13, FontWeight = FontWeights.SemiBold, Foreground = Brushes.White,
+            VerticalAlignment = VerticalAlignment.Center,
+        };
+        var authRow = new StackPanel { Orientation = Orientation.Horizontal };
+        authRow.Children.Add(dot);
+        authRow.Children.Add(label);
+        AuthPanel.Children.Add(authRow);
+
+        SignOutButton.Visibility = VM.IsSignedIn ? Visibility.Visible : Visibility.Collapsed;
+        SignInButton.Content     = VM.IsSignedIn ? "Re-authenticate" : "Sign In";
+    }
+
+    // ── Event handlers ───────────────────────────────────────────────
+
+    private void Settings_Click(object s, RoutedEventArgs e)
+    {
+        InitSettings();
+        MainPanel.Visibility     = Visibility.Collapsed;
+        SettingsPanel.Visibility = Visibility.Visible;
+        UpdatePanel.Visibility   = Visibility.Collapsed;
+    }
+
+    private void BackFromSettings_Click(object s, RoutedEventArgs e) => ShowMain();
+
+    private void ShowMain()
+    {
+        MainPanel.Visibility     = Visibility.Visible;
+        SettingsPanel.Visibility = Visibility.Collapsed;
+        UpdatePanel.Visibility   = Visibility.Collapsed;
+    }
+
+    private void Close_Click(object s, RoutedEventArgs e) => Hide();
+
+    private async void Refresh_Click(object s, RoutedEventArgs e) => await VM.RefreshAsync();
+
+    private void UpdateBanner_Click(object s, RoutedEventArgs e) => ShowUpdatePanel();
+
+    private void ShowUpdatePanel()
+    {
+        CurrentVerLabel.Text  = $"v{Updater.CurrentVersion}";
+        NewVerLabel.Text      = $"v{Updater.LatestVersion}";
+        ReleaseNotesText.Text = Updater.ReleaseNotes;
+        MainPanel.Visibility     = Visibility.Collapsed;
+        SettingsPanel.Visibility = Visibility.Collapsed;
+        UpdatePanel.Visibility   = Visibility.Visible;
+    }
+
+    private void CloseUpdate_Click(object s, RoutedEventArgs e) => ShowMain();
+
+    private async void Install_Click(object s, RoutedEventArgs e)
+    {
+        NotNowButton.Visibility     = Visibility.Collapsed;
+        UpdateStatusText.Visibility = Visibility.Visible;
+        UpdateProgress.Visibility   = Visibility.Visible;
+        await Updater.DownloadAndInstallAsync();
+    }
+
+    private void SignIn_Click(object s, RoutedEventArgs e)
+    {
+        var login = new LoginWindow { Owner = this };
+        if (login.ShowDialog() == true)
+        {
+            _ = VM.RefreshAsync();
+            InitSettings();
+        }
+    }
+
+    private async void SignOut_Click(object s, RoutedEventArgs e)
+    {
+        await VM.SignOutAsync();
+        InitSettings();
+    }
+
+    private void BetaToggle_Changed(object s, RoutedEventArgs e)
+    {
+        Updater.BetaChannel = BetaToggle.IsChecked == true;
+        _ = Updater.CheckForUpdatesAsync();
+    }
+
+    private void RefreshPicker_Changed(object s, SelectionChangedEventArgs e)
+    {
+        if (RefreshPicker.SelectedItem is ValueTuple<string, int> selected)
+        {
+            VM.RefreshInterval = selected.Item2;
+            ((App)Application.Current).ScheduleTimer(selected.Item2);
+        }
+    }
+
+    private async void CheckUpdate_Click(object s, RoutedEventArgs e)
+    {
+        if (Updater.UpdateAvailable) { ShowUpdatePanel(); return; }
+        CheckUpdateButton.Content = "…";
+        await Updater.CheckForUpdatesAsync();
+        CheckUpdateButton.Content = Updater.UpdateAvailable ? "Install" : "Check";
+    }
+}

windows/Properties/Settings.settings

@@ -0,0 +1,23 @@
+<?xml version='1.0' encoding='utf-8'?>
+<SettingsFile xmlns="uri:settings" CurrentProfile="(Default)">
+  <Profiles>
+    <Profile Name="(Default)"/>
+  </Profiles>
+  <Settings>
+    <Setting Name="CookieStore" Type="System.String" Scope="User">
+      <Value Profile="(Default)"></Value>
+    </Setting>
+    <Setting Name="BurnHistory" Type="System.String" Scope="User">
+      <Value Profile="(Default)"></Value>
+    </Setting>
+    <Setting Name="RefreshInterval" Type="System.Int32" Scope="User">
+      <Value Profile="(Default)">120</Value>
+    </Setting>
+    <Setting Name="ShowInTaskbar" Type="System.Boolean" Scope="User">
+      <Value Profile="(Default)">True</Value>
+    </Setting>
+    <Setting Name="BetaChannel" Type="System.Boolean" Scope="User">
+      <Value Profile="(Default)">False</Value>
+    </Setting>
+  </Settings>
+</SettingsFile>

windows/README.md

@@ -0,0 +1,50 @@
+# ClaudeChecker for Windows
+
+A native Windows port of ClaudeChecker — a system tray app for monitoring your Claude AI usage limits in real time.
+
+## Requirements
+
+- Windows 10 / 11 (x64)
+- [.NET 8 Runtime](https://dotnet.microsoft.com/download/dotnet/8.0)
+- [WebView2 Runtime](https://developer.microsoft.com/microsoft-edge/webview2/) (usually pre-installed on Windows 11)
+
+## Building
+
+```powershell
+cd windows
+dotnet build -c Release
+```
+
+The output is a single `ClaudeChecker.exe` in `bin\Release\net8.0-windows\`.
+
+> **Assets:** You need to supply `Assets/icon.ico` and `Assets/icon.png` (128×128) before building.
+> Copy them from the macOS project's `ClaudeChecker/Assets.xcassets/AppIcon.appiconset/`.
+
+## Features
+
+- System tray icon — left-click to show/hide the popup
+- 5-hour and 7-day usage gauges with burn rate sparklines
+- Cookie-based auth via embedded WebView2 browser (sign in once, session persists)
+- Auto-refresh on a configurable interval (1–10 min)
+- Update checking against the same `version.json` / `version-beta.json` as the macOS app
+- Beta channel toggle
+- Settings panel (auth, refresh interval, update channel)
+
+## Architecture
+
+| File | Purpose |
+|---|---|
+| `App.xaml.cs` | Tray icon, popup lifecycle, refresh timer |
+| `PopupWindow.xaml/cs` | Main UI — limit cards, settings, update sheet |
+| `LoginWindow.xaml/cs` | WebView2 browser for claude.ai auth |
+| `UsageViewModel.cs` | Data fetching, cookie handling, state |
+| `UpdateManager.cs` | Version checking, download and install |
+| `Models.cs` | Data models |
+| `Controls/GaugeControl.cs` | Custom circular gauge |
+| `Controls/SparklineControl.cs` | Burn history sparkline |
+
+## Notes
+
+- Cookies are stored in user settings (via `Properties.Settings`), not the WebView2 profile, so they survive WebView2 cache clears.
+- Updates download a `.zip`, extract, and run a `.bat` script that replaces the exe after the app exits.
+- The popup positions itself in the bottom-right corner near the system tray.

windows/RELEASE_NOTES.md

@@ -0,0 +1,3 @@
+## What's new
+
+Initial Windows release.

windows/UpdateManager.cs

@@ -0,0 +1,260 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.IO.Compression;
+using System.Net.Http;
+using System.Text.Json;
+using System.Threading.Tasks;
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+using System.Collections.Generic;
+using System.Windows;
+
+namespace ClaudeCheckerWindows;
+
+public class UpdateManager : INotifyPropertyChanged
+{
+    private const string StableUrl = "https://raw.githubusercontent.com/superdooper86/claudechecker/refs/heads/main/version-windows.json";
+    private const string BetaUrl   = "https://raw.githubusercontent.com/superdooper86/claudechecker/refs/heads/main/version-windows-beta.json";
+
+    private bool   _updateAvailable;
+    private string _latestVersion  = "";
+    private string _releaseNotes   = "";
+    private string _downloadUrl    = "";
+    private bool   _betaAvailable;
+    private string _latestBetaVersion = "";
+    private bool   _isDownloading;
+    private double _downloadProgress;
+    private string _statusMessage  = "";
+    private string? _updateError;
+    private bool   _updateComplete;
+
+    public bool   UpdateAvailable      { get => _updateAvailable;     set => Set(ref _updateAvailable, value); }
+    public string LatestVersion        { get => _latestVersion;       set => Set(ref _latestVersion, value); }
+    public string ReleaseNotes         { get => _releaseNotes;        set => Set(ref _releaseNotes, value); }
+    public string DownloadUrl          { get => _downloadUrl;         set => Set(ref _downloadUrl, value); }
+    public bool   BetaAvailable        { get => _betaAvailable;       set => Set(ref _betaAvailable, value); }
+    public string LatestBetaVersion    { get => _latestBetaVersion;   set => Set(ref _latestBetaVersion, value); }
+    public bool   IsDownloading        { get => _isDownloading;       set => Set(ref _isDownloading, value); }
+    public double DownloadProgress     { get => _downloadProgress;    set => Set(ref _downloadProgress, value); }
+    public string StatusMessage        { get => _statusMessage;       set => Set(ref _statusMessage, value); }
+    public string? UpdateError         { get => _updateError;         set => Set(ref _updateError, value); }
+    public bool   UpdateComplete       { get => _updateComplete;      set => Set(ref _updateComplete, value); }
+
+    private bool _betaChannel;
+    public bool BetaChannel
+    {
+        get => _betaChannel;
+        set
+        {
+            Set(ref _betaChannel, value);
+            Properties.Settings.Default.BetaChannel = value;
+            Properties.Settings.Default.Save();
+        }
+    }
+
+    public string CurrentVersion =>
+        System.Reflection.Assembly.GetExecutingAssembly()
+              .GetName().Version?.ToString(3) ?? "1.0.0";
+
+    public UpdateManager()
+    {
+        _betaChannel = Properties.Settings.Default.BetaChannel;
+    }
+
+    public async Task CheckForUpdatesAsync()
+    {
+        using var http = new HttpClient();
+        http.DefaultRequestHeaders.CacheControl =
+            new System.Net.Http.Headers.CacheControlHeaderValue { NoCache = true };
+
+        var stable = await FetchVersionAsync(http, StableUrl);
+        var beta   = await FetchVersionAsync(http, BetaUrl);
+
+        await Application.Current.Dispatcher.InvokeAsync(() =>
+        {
+            if (stable != null && IsNewer(stable.Version, CurrentVersion))
+            {
+                LatestVersion   = stable.Version;
+                ReleaseNotes    = stable.Notes ?? "";
+                DownloadUrl     = stable.Url;
+                UpdateAvailable = true;
+            }
+            else
+            {
+                UpdateAvailable = false;
+                LatestVersion   = "";
+            }
+
+            if (beta != null && IsNewer(beta.Version, CurrentVersion))
+            {
+                LatestBetaVersion = beta.Version;
+                BetaAvailable     = true;
+
+                if (BetaChannel && IsNewer(beta.Version, LatestVersion))
+                {
+                    LatestVersion   = beta.Version;
+                    ReleaseNotes    = beta.Notes ?? "";
+                    DownloadUrl     = beta.Url;
+                    UpdateAvailable = true;
+                }
+            }
+            else
+            {
+                BetaAvailable     = false;
+                LatestBetaVersion = "";
+            }
+        });
+    }
+
+    private static async Task<VersionInfo?> FetchVersionAsync(HttpClient http, string url)
+    {
+        try
+        {
+            var bust = $"{url}?t={DateTimeOffset.UtcNow.ToUnixTimeSeconds()}";
+            var json = await http.GetStringAsync(bust);
+            return JsonSerializer.Deserialize<VersionInfo>(json,
+                new JsonSerializerOptions { PropertyNameCaseInsensitive = true });
+        }
+        catch { return null; }
+    }
+
+    public async Task DownloadAndInstallAsync()
+    {
+        if (string.IsNullOrEmpty(DownloadUrl)) return;
+
+        IsDownloading  = true;
+        UpdateError    = null;
+        UpdateComplete = false;
+        StatusMessage  = "Downloading…";
+
+        try
+        {
+            var tmpDir  = Path.Combine(Path.GetTempPath(), $"CCUpdate_{Guid.NewGuid():N}");
+            Directory.CreateDirectory(tmpDir);
+            var zipPath = Path.Combine(tmpDir, "ClaudeChecker.zip");
+
+            using var http = new HttpClient();
+            var response   = await http.GetAsync(DownloadUrl, HttpCompletionOption.ResponseHeadersRead);
+            response.EnsureSuccessStatusCode();
+
+            var total    = response.Content.Headers.ContentLength ?? 0;
+            var received = 0L;
+
+            await using (var stream = await response.Content.ReadAsStreamAsync())
+            await using (var file   = File.Create(zipPath))
+            {
+                var buffer = new byte[81920];
+                int read;
+                while ((read = await stream.ReadAsync(buffer)) > 0)
+                {
+                    await file.WriteAsync(buffer.AsMemory(0, read));
+                    received += read;
+                    if (total > 0)
+                        DownloadProgress = (double)received / total * 0.8;
+                }
+            }
+
+            StatusMessage    = "Unpacking…";
+            DownloadProgress = 0.85;
+
+            var extractDir = Path.Combine(tmpDir, "extracted");
+            ZipFile.ExtractToDirectory(zipPath, extractDir, overwriteFiles: true);
+
+            // Find the installer exe
+            var newExe = FindExe(extractDir);
+            if (newExe == null) throw new Exception("ClaudeChecker.exe not found in update package.");
+
+            DownloadProgress = 0.95;
+            StatusMessage    = "Installing…";
+
+            // Write a batch script to replace the exe after we exit
+            var currentExe = Process.GetCurrentProcess().MainModule!.FileName;
+            var script = $"""
+                @echo off
+                timeout /t 2 /nobreak > nul
+                copy /Y "{newExe}" "{currentExe}"
+                start "" "{currentExe}"
+                rmdir /S /Q "{tmpDir}"
+                """;
+
+            var scriptPath = Path.Combine(Path.GetTempPath(), "claudechecker_update.bat");
+            await File.WriteAllTextAsync(scriptPath, script);
+
+            DownloadProgress = 1.0;
+            StatusMessage    = "Installed! Relaunching…";
+            UpdateComplete   = true;
+
+            await Task.Delay(800);
+
+            Process.Start(new ProcessStartInfo
+            {
+                FileName        = "cmd.exe",
+                Arguments       = $"/C \"{scriptPath}\"",
+                CreateNoWindow  = true,
+                UseShellExecute = false,
+            });
+
+            Application.Current.Dispatcher.Invoke(() => Application.Current.Shutdown());
+        }
+        catch (Exception ex)
+        {
+            UpdateError   = ex.Message;
+            IsDownloading = false;
+            StatusMessage = "";
+        }
+    }
+
+    private static string? FindExe(string dir)
+    {
+        foreach (var f in Directory.EnumerateFiles(dir, "ClaudeChecker.exe", SearchOption.AllDirectories))
+            return f;
+        return null;
+    }
+
+    public static bool IsNewer(string version, string current)
+    {
+        static (int[] Base, int[]? Pre) Parse(string v)
+        {
+            if (string.IsNullOrEmpty(v)) return ([], null);
+            var halves = v.Split('-', 2);
+            var baseP  = Array.ConvertAll(halves[0].Split('.'), p => int.TryParse(p, out var n) ? n : 0);
+            int[]? pre = halves.Length > 1
+                ? Array.ConvertAll(halves[1].Split('.'), p => int.TryParse(p, out var n) ? n : 0)
+                : null;
+            return (baseP, pre);
+        }
+
+        var (ab, ap) = Parse(version);
+        var (bb, bp) = Parse(current);
+
+        for (var i = 0; i < Math.Max(ab.Length, bb.Length); i++)
+        {
+            var av = i < ab.Length ? ab[i] : 0;
+            var bv = i < bb.Length ? bb[i] : 0;
+            if (av != bv) return av > bv;
+        }
+
+        if (ap == null && bp != null) return true;
+        if (ap != null && bp == null) return false;
+        if (ap != null && bp != null)
+        {
+            for (var i = 0; i < Math.Max(ap.Length, bp.Length); i++)
+            {
+                var av = i < ap.Length ? ap[i] : 0;
+                var bv = i < bp.Length ? bp[i] : 0;
+                if (av != bv) return av > bv;
+            }
+        }
+        return false;
+    }
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+    private void Set<T>(ref T field, T value, [CallerMemberName] string? name = null)
+    {
+        if (EqualityComparer<T>.Default.Equals(field, value)) return;
+        field = value;
+        Application.Current.Dispatcher.InvokeAsync(()
+            => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name)));
+    }
+}

windows/UsageViewModel.cs

@@ -0,0 +1,313 @@
+using Microsoft.Web.WebView2.Core;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Net.Http;
+using System.Runtime.CompilerServices;
+using System.Text.Json;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace ClaudeCheckerWindows;
+
+public class UsageViewModel : INotifyPropertyChanged
+{
+    private static readonly string OrgId = "daf626a9-4924-4ff3-ba98-23b523062f8e";
+    private static readonly JsonSerializerOptions JsonOpts = new() { PropertyNameCaseInsensitive = true };
+
+    private List<AgentLimit> _limits = [];
+    private bool _isLoading;
+    private string? _errorMessage;
+    private bool _isSignedIn;
+    private string _userEmail = "";
+    private string _planLabel = "Pro";
+    private DateTime? _lastUpdated;
+    private OverageSpendLimit? _overage;
+    private PrepaidCredits? _prepaid;
+
+    private readonly Dictionary<string, List<double>> _burnHistory = [];
+    private const int MaxHistorySamples = 24;
+
+    public List<AgentLimit> Limits          { get => _limits;       set => Set(ref _limits, value); }
+    public bool IsLoading                   { get => _isLoading;    set => Set(ref _isLoading, value); }
+    public string? ErrorMessage             { get => _errorMessage; set => Set(ref _errorMessage, value); }
+    public bool IsSignedIn                  { get => _isSignedIn;   set => Set(ref _isSignedIn, value); }
+    public string UserEmail                 { get => _userEmail;    set => Set(ref _userEmail, value); }
+    public string PlanLabel                 { get => _planLabel;    set => Set(ref _planLabel, value); }
+    public DateTime? LastUpdated            { get => _lastUpdated;  set => Set(ref _lastUpdated, value); }
+    public OverageSpendLimit? Overage       { get => _overage;      set => Set(ref _overage, value); }
+    public PrepaidCredits? Prepaid          { get => _prepaid;      set => Set(ref _prepaid, value); }
+
+    private int _refreshInterval = 120;
+    public int RefreshInterval
+    {
+        get => _refreshInterval;
+        set
+        {
+            Set(ref _refreshInterval, value);
+            Properties.Settings.Default.RefreshInterval = value;
+            Properties.Settings.Default.Save();
+        }
+    }
+
+    private bool _showInTaskbar = true;
+    public bool ShowInTaskbar
+    {
+        get => _showInTaskbar;
+        set
+        {
+            Set(ref _showInTaskbar, value);
+            Properties.Settings.Default.ShowInTaskbar = value;
+            Properties.Settings.Default.Save();
+        }
+    }
+
+    public UsageViewModel()
+    {
+        _refreshInterval = Properties.Settings.Default.RefreshInterval > 0
+            ? Properties.Settings.Default.RefreshInterval : 120;
+        _showInTaskbar = Properties.Settings.Default.ShowInTaskbar;
+        LoadBurnHistory();
+        LoadPlaceholders();
+    }
+
+    public async Task RefreshAsync()
+    {
+        await Application.Current.Dispatcher.InvokeAsync(() => IsLoading = true);
+
+        try
+        {
+            var cookies = await GetCookiesAsync();
+            if (cookies.Count == 0)
+            {
+                await Application.Current.Dispatcher.InvokeAsync(() =>
+                {
+                    IsSignedIn = false;
+                    ErrorMessage = "Not signed in — click Sign In to authenticate.";
+                    IsLoading = false;
+                });
+                return;
+            }
+
+            using var http = BuildClient(cookies);
+
+            var usageTask   = FetchAsync<UsageResponse>(http, $"https://claude.ai/api/organizations/{OrgId}/usage");
+            var overageTask = FetchAsync<OverageSpendLimit>(http, $"https://claude.ai/api/organizations/{OrgId}/overage_spend_limit");
+            var prepaidTask = FetchAsync<PrepaidCredits>(http, $"https://claude.ai/api/organizations/{OrgId}/prepaid/credits");
+            var emailTask   = FetchEmailAsync(http);
+
+            await Task.WhenAll(usageTask, overageTask, prepaidTask, emailTask);
+
+            var usage  = usageTask.Result;
+            var limits = BuildLimits(usage);
+
+            foreach (var limit in limits)
+            {
+                var key = limit.Window.ToString();
+                if (!_burnHistory.ContainsKey(key)) _burnHistory[key] = [];
+                _burnHistory[key].Add(limit.UsedPercent);
+                if (_burnHistory[key].Count > MaxHistorySamples)
+                    _burnHistory[key].RemoveAt(0);
+                limit.BurnHistory = [.. _burnHistory[key]];
+            }
+            SaveBurnHistory();
+
+            await Application.Current.Dispatcher.InvokeAsync(() =>
+            {
+                Limits        = limits;
+                Overage       = overageTask.Result;
+                Prepaid       = prepaidTask.Result;
+                UserEmail     = emailTask.Result ?? UserEmail;
+                IsSignedIn    = true;
+                ErrorMessage  = null;
+                LastUpdated   = DateTime.Now;
+                IsLoading     = false;
+            });
+        }
+        catch (Exception ex)
+        {
+            await Application.Current.Dispatcher.InvokeAsync(() =>
+            {
+                ErrorMessage = ex.Message;
+                IsLoading    = false;
+            });
+        }
+    }
+
+    public async Task SignOutAsync()
+    {
+        var env = await CoreWebView2Environment.CreateAsync();
+        var dataManager = env.CreateCoreWebView2CookieManager();
+        // Clear via settings — simplest approach is to delete the stored cookies
+        Properties.Settings.Default.CookieStore = "";
+        Properties.Settings.Default.Save();
+
+        await Application.Current.Dispatcher.InvokeAsync(() =>
+        {
+            IsSignedIn   = false;
+            UserEmail    = "";
+            ErrorMessage = "Signed out.";
+            Limits       = [];
+        });
+    }
+
+    // Cookie store: we persist cookies as JSON in settings after login
+    public static async Task<List<(string Name, string Value, string Domain, string Path)>> GetCookiesAsync()
+    {
+        var raw = Properties.Settings.Default.CookieStore;
+        if (string.IsNullOrEmpty(raw)) return [];
+        try
+        {
+            return JsonSerializer.Deserialize<List<CookieEntry>>(raw)
+                ?.Select(c => (c.Name, c.Value, c.Domain, c.Path))
+                .ToList() ?? [];
+        }
+        catch { return []; }
+    }
+
+    public static void SaveCookies(IEnumerable<CoreWebView2Cookie> cookies)
+    {
+        var entries = cookies
+            .Where(c => c.Domain.Contains("claude.ai"))
+            .Select(c => new CookieEntry { Name = c.Name, Value = c.Value, Domain = c.Domain, Path = c.Path })
+            .ToList();
+        Properties.Settings.Default.CookieStore = JsonSerializer.Serialize(entries);
+        Properties.Settings.Default.Save();
+    }
+
+    private static HttpClient BuildClient(List<(string Name, string Value, string Domain, string Path)> cookies)
+    {
+        var handler = new HttpClientHandler { UseCookies = false };
+        var http    = new HttpClient(handler);
+        http.DefaultRequestHeaders.Add("accept", "application/json");
+        var cookieHeader = string.Join("; ", cookies.Select(c => $"{c.Name}={c.Value}"));
+        http.DefaultRequestHeaders.Add("Cookie", cookieHeader);
+        return http;
+    }
+
+    private static async Task<T?> FetchAsync<T>(HttpClient http, string url) where T : class
+    {
+        try
+        {
+            var resp = await http.GetAsync(url);
+            if (!resp.IsSuccessStatusCode) return null;
+            var json = await resp.Content.ReadAsStringAsync();
+            return JsonSerializer.Deserialize<T>(json, JsonOpts);
+        }
+        catch { return null; }
+    }
+
+    private static async Task<string?> FetchEmailAsync(HttpClient http)
+    {
+        try
+        {
+            var resp = await http.GetAsync("https://claude.ai/api/bootstrap");
+            if (!resp.IsSuccessStatusCode) return null;
+            var json = await resp.Content.ReadAsStringAsync();
+            var boot = JsonSerializer.Deserialize<BootstrapResponse>(json, JsonOpts);
+            return boot?.Account?.EmailAddress;
+        }
+        catch { return null; }
+    }
+
+    private List<AgentLimit> BuildLimits(UsageResponse? usage)
+    {
+        if (usage == null) return [];
+        var now    = DateTime.Now;
+        var result = new List<AgentLimit>();
+
+        if (usage.FiveHour != null)
+        {
+            var reset = ParseDate(usage.FiveHour.ResetsAt, now);
+            var pct   = Math.Clamp(usage.FiveHour.Utilization, 0, 100);
+            result.Add(new AgentLimit
+            {
+                Window        = WindowKind.FiveHour,
+                UsedPercent   = pct,
+                TimeRemaining = TimeLeft(reset, now),
+                ResetDate     = reset,
+                BurnRate      = pct / 5.0,
+                IsLive        = true,
+            });
+        }
+
+        if (usage.SevenDay != null)
+        {
+            var reset = ParseDate(usage.SevenDay.ResetsAt, now);
+            var pct   = Math.Clamp(usage.SevenDay.Utilization, 0, 100);
+            result.Add(new AgentLimit
+            {
+                Window        = WindowKind.SevenDay,
+                UsedPercent   = pct,
+                TimeRemaining = TimeLeft(reset, now),
+                ResetDate     = reset,
+                BurnRate      = pct / (7 * 24.0),
+                IsLive        = true,
+            });
+        }
+
+        return result;
+    }
+
+    private static DateTime ParseDate(string? s, DateTime fallback)
+    {
+        if (s == null) return fallback.AddHours(1);
+        return DateTime.TryParse(s, null, System.Globalization.DateTimeStyles.RoundtripKind, out var d)
+            ? d.ToLocalTime() : fallback.AddHours(1);
+    }
+
+    private static string TimeLeft(DateTime reset, DateTime now)
+    {
+        var diff = reset - now;
+        if (diff <= TimeSpan.Zero) return "resetting...";
+        if (diff.TotalDays >= 1)
+            return $"{(int)diff.TotalDays}d {diff.Hours}h";
+        return $"{diff.Hours}h {diff.Minutes}m";
+    }
+
+    private void LoadPlaceholders()
+    {
+        var now = DateTime.Now;
+        Limits =
+        [
+            new() { Window = WindowKind.FiveHour, UsedPercent = 0, TimeRemaining = "—", ResetDate = now.AddHours(1) },
+            new() { Window = WindowKind.SevenDay,  UsedPercent = 0, TimeRemaining = "—", ResetDate = now.AddDays(7) },
+        ];
+    }
+
+    private void LoadBurnHistory()
+    {
+        try
+        {
+            var raw = Properties.Settings.Default.BurnHistory;
+            if (string.IsNullOrEmpty(raw)) return;
+            var saved = JsonSerializer.Deserialize<Dictionary<string, List<double>>>(raw);
+            if (saved != null)
+                foreach (var kv in saved) _burnHistory[kv.Key] = kv.Value;
+        }
+        catch { }
+    }
+
+    private void SaveBurnHistory()
+    {
+        Properties.Settings.Default.BurnHistory = JsonSerializer.Serialize(_burnHistory);
+        Properties.Settings.Default.Save();
+    }
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+    private void Set<T>(ref T field, T value, [CallerMemberName] string? name = null)
+    {
+        if (EqualityComparer<T>.Default.Equals(field, value)) return;
+        field = value;
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
+    }
+
+    private class CookieEntry
+    {
+        public string Name   { get; set; } = "";
+        public string Value  { get; set; } = "";
+        public string Domain { get; set; } = "";
+        public string Path   { get; set; } = "/";
+    }
+}