Add windows build job

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b08f8cc..35b1793 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -3,7 +3,7 @@ name: Build and Release
 on:
   push:
     tags:
-      - 'v*'
+      - "v*"
   workflow_dispatch:
 
 permissions:
@@ -114,6 +114,43 @@ jobs:
             dist/*.deb
             dist/*.AppImage
 
+  build-windows:
+    name: Windows (x64)
+    runs-on: windows-latest
+    environment: Release
+    needs: version
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Set up Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          channel: stable
+          flutter-version: 3.38.7
+
+      - name: Install dependencies
+        run: flutter pub get
+
+      - name: Install Inno Setup and Rust
+        run: choco install innosetup rust -y
+
+      - name: Build Windows release
+        run: flutter build windows --release
+
+      - name: Create installer
+        run: |
+          $version = '${{ needs.version.outputs.version }}'.TrimStart('v')
+          & 'C:\Program Files (x86)\Inno Setup 6\ISCC.exe' /DAppVersion=$version windows\installer.iss
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: windows-x64
+          path: windows/Output/*.exe
+
   release:
     name: Sign + Release
     runs-on: ubuntu-latest
@@ -122,6 +159,7 @@ jobs:
       - version
       - build-android
       - build-linux-x86_64
+      - build-windows
     permissions:
       contents: write
     steps:
@@ -144,7 +182,7 @@ jobs:
           GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
         run: |
           set -euo pipefail
-          find dist -type f \( -name "*.apk" -o -name "*.aab" -o -name "*.deb" -o -name "*.AppImage" \) -print0 | while IFS= read -r -d '' file; do
+          find dist -type f \( -name "*.apk" -o -name "*.aab" -o -name "*.deb" -o -name "*.AppImage" -o -name "*.exe" \) -print0 | while IFS= read -r -d '' file; do
             echo "$GPG_PASSPHRASE" | gpg --batch --yes --pinentry-mode loopback --passphrase-fd 0 --detach-sign --armor "$file"
             echo "Signed: $file"
           done
@@ -168,5 +206,7 @@ jobs:
             dist/**/*.deb.asc
             dist/**/*.AppImage
             dist/**/*.AppImage.asc
+            dist/**/*.exe
+            dist/**/*.exe.asc
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/windows/installer.iss b/windows/installer.iss
new file mode 100644
index 0000000..bae05fc
--- /dev/null
+++ b/windows/installer.iss
@@ -0,0 +1,66 @@
+; Inno Setup Script for Skylight Wallet
+; This script creates a Windows installer with a setup wizard.
+;
+; Usage (from project root):
+;   iscc /DAppVersion=1.0.0 windows/installer.iss
+;
+; Requirements:
+;   - Inno Setup 6.x (https://jrsoftware.org/isinfo.php)
+;   - Flutter Windows build must exist at build\windows\x64\runner\Release\
+
+#ifndef AppVersion
+  #define AppVersion "1.0.0"
+#endif
+
+#define AppName "Skylight Wallet"
+#define AppPublisher "MAGIC Grants"
+#define AppURL "https://github.com/MagicGrants/skylight-wallet"
+#define AppExeName "skylight_wallet.exe"
+
+[Setup]
+; NOTE: The value of AppId uniquely identifies this application.
+; Do not use the same AppId value in installers for other applications.
+AppId={{E8F4B2A1-7D3C-4E5F-9A1B-2C3D4E5F6A7B}
+AppName={#AppName}
+AppVersion={#AppVersion}
+AppVerName={#AppName} {#AppVersion}
+AppPublisher={#AppPublisher}
+AppPublisherURL={#AppURL}
+AppSupportURL={#AppURL}
+AppUpdatesURL={#AppURL}/releases
+DefaultDirName={autopf}\{#AppName}
+DefaultGroupName={#AppName}
+DisableProgramGroupPage=yes
+LicenseFile=..\LICENSE
+OutputDir=Output
+OutputBaseFilename=skylight-wallet-v{#AppVersion}-x64-setup
+SetupIconFile=runner\resources\app_icon.ico
+UninstallDisplayIcon={app}\{#AppExeName}
+Compression=lzma2/max
+SolidCompression=yes
+WizardStyle=modern
+ArchitecturesAllowed=x64compatible
+ArchitecturesInstallIn64BitMode=x64compatible
+PrivilegesRequired=lowest
+PrivilegesRequiredOverridesAllowed=dialog
+
+[Languages]
+Name: "english"; MessagesFile: "compiler:Default.isl"
+Name: "portuguese"; MessagesFile: "compiler:Languages\Portuguese.isl"
+
+[Tasks]
+Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked
+
+[Files]
+; Main application files from Flutter build
+Source: "..\build\windows\x64\runner\Release\{#AppExeName}"; DestDir: "{app}"; Flags: ignoreversion
+Source: "..\build\windows\x64\runner\Release\*.dll"; DestDir: "{app}"; Flags: ignoreversion
+Source: "..\build\windows\x64\runner\Release\data\*"; DestDir: "{app}\data"; Flags: ignoreversion recursesubdirs createallsubdirs
+
+[Icons]
+Name: "{group}\{#AppName}"; Filename: "{app}\{#AppExeName}"
+Name: "{group}\{cm:UninstallProgram,{#AppName}}"; Filename: "{uninstallexe}"
+Name: "{autodesktop}\{#AppName}"; Filename: "{app}\{#AppExeName}"; Tasks: desktopicon
+
+[Run]
+Filename: "{app}\{#AppExeName}"; Description: "{cm:LaunchProgram,{#StringChange(AppName, '&', '&&')}}"; Flags: nowait postinstall skipifsilent