Phase 6+7: Inno Setup installer + GitHub Actions release pipeline

installer/webhook-server.iss is an Inno Setup 6 script that:
- Installs to %ProgramFiles%\WebhookServer
- Creates Start Menu folder + GUI shortcut (and optional desktop icon)
- Runs install-service.ps1 post-install to register the Windows Service
- Runs uninstall-service.ps1 pre-uninstall to remove it
- Bundles the webhook-server icon for the installer / uninstaller

scripts/build-installer.ps1 is the local build helper: publishes both
projects, finds ISCC.exe (PATH or standard install path), compiles the
installer with the version pulled from Directory.Build.props, drops the
output in dist/.

.github/workflows/ci.yml runs build + test on every push/PR to main.
.github/workflows/release.yml triggers on v* tags (or manual dispatch),
runs tests, installs Inno Setup via choco, builds the installer, and
attaches the .exe to a GitHub Release. Pre-1.0 versions are flagged
prerelease automatically.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -0,0 +1,27 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Restore
+        run: dotnet restore WebhookServer.sln
+
+      - name: Build
+        run: dotnet build WebhookServer.sln -c Release --no-restore
+
+      - name: Test
+        run: dotnet test WebhookServer.sln -c Release --no-build --verbosity normal

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version to build (e.g. 0.1.0). Defaults to Directory.Build.props.'
+        required: false
+
+jobs:
+  build-installer:
+    runs-on: windows-latest
+    permissions:
+      contents: write   # needed to create releases / upload assets
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Resolve version
+        id: ver
+        shell: pwsh
+        run: |
+          if ('${{ github.event_name }}' -eq 'push') {
+            $v = '${{ github.ref_name }}'.TrimStart('v')
+          } elseif ('${{ inputs.version }}') {
+            $v = '${{ inputs.version }}'
+          } else {
+            [xml]$p = Get-Content Directory.Build.props
+            $v = $p.Project.PropertyGroup.Version
+          }
+          "version=$v" | Out-File $env:GITHUB_OUTPUT -Append
+          Write-Host "Building version $v"
+
+      - name: Restore + test
+        run: |
+          dotnet restore WebhookServer.sln
+          dotnet test WebhookServer.sln -c Release
+
+      - name: Install Inno Setup
+        shell: pwsh
+        run: |
+          choco install innosetup --no-progress -y
+          Write-Host "ISCC at: $((Get-Command iscc).Path)"
+
+      - name: Build installer
+        shell: pwsh
+        run: ./scripts/build-installer.ps1 -VersionOverride ${{ steps.ver.outputs.version }}
+
+      - name: Upload installer artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: WebhookServer-Setup-${{ steps.ver.outputs.version }}
+          path: dist/WebhookServer-Setup-*.exe
+
+      - name: Create GitHub Release
+        if: startsWith(github.ref, 'refs/tags/v')
+        uses: softprops/action-gh-release@v2
+        with:
+          name: Webhook Server ${{ steps.ver.outputs.version }}
+          tag_name: ${{ github.ref_name }}
+          draft: false
+          prerelease: ${{ startsWith(steps.ver.outputs.version, '0.') }}
+          files: dist/WebhookServer-Setup-*.exe
+          generate_release_notes: true

installer/webhook-server.iss

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+; Inno Setup script for Webhook Server.
+;
+; Build: iscc /DAppVersion=0.1.0 webhook-server.iss
+; Output: ..\dist\WebhookServer-Setup-{AppVersion}.exe
+;
+; The installer copies published binaries to {pf}\WebhookServer, installs the
+; Windows Service via install-service.ps1 post-install, and removes the service
+; via uninstall-service.ps1 pre-uninstall. Start Menu gets a single GUI shortcut.
+
+#ifndef AppVersion
+  #define AppVersion "0.1.0"
+#endif
+
+#define AppName "Webhook Server"
+#define AppPublisher "Justin Paul"
+#define AppURL "https://jpaul.me"
+#define AppExeName "WebhookServer.Gui.exe"
+#define ServiceExeName "WebhookServer.Service.exe"
+#define ServiceName "WebhookServer"
+#define RepoRoot "..\"
+
+[Setup]
+AppId={{6E3B3C1A-9C20-4F50-B6A8-2B6D6D7E2F11}
+AppName={#AppName}
+AppVersion={#AppVersion}
+AppPublisher={#AppPublisher}
+AppPublisherURL={#AppURL}
+AppSupportURL=https://github.com/recklessop/webhook-server
+AppUpdatesURL=https://github.com/recklessop/webhook-server/releases
+DefaultDirName={autopf}\WebhookServer
+DefaultGroupName={#AppName}
+DisableProgramGroupPage=yes
+OutputBaseFilename=WebhookServer-Setup-{#AppVersion}
+OutputDir={#RepoRoot}dist
+SetupIconFile={#RepoRoot}resources\webhook-server.ico
+UninstallDisplayIcon={app}\{#AppExeName}
+PrivilegesRequired=admin
+ArchitecturesAllowed=x64compatible
+ArchitecturesInstallIn64BitMode=x64compatible
+Compression=lzma2/max
+SolidCompression=yes
+WizardStyle=modern
+VersionInfoVersion={#AppVersion}.0
+VersionInfoCompany={#AppPublisher}
+VersionInfoProductName={#AppName}
+
+[Languages]
+Name: "english"; MessagesFile: "compiler:Default.isl"
+
+[Tasks]
+Name: "desktopicon"; Description: "Create a &desktop shortcut"; GroupDescription: "Additional shortcuts:"; Flags: unchecked
+
+[Files]
+Source: "{#RepoRoot}publish\service\*"; DestDir: "{app}"; Flags: ignoreversion recursesubdirs createallsubdirs
+Source: "{#RepoRoot}publish\gui\*";     DestDir: "{app}"; Flags: ignoreversion recursesubdirs createallsubdirs
+Source: "{#RepoRoot}scripts\install-service.ps1";   DestDir: "{app}\scripts"; Flags: ignoreversion
+Source: "{#RepoRoot}scripts\uninstall-service.ps1"; DestDir: "{app}\scripts"; Flags: ignoreversion
+Source: "{#RepoRoot}README.md"; DestDir: "{app}"; Flags: ignoreversion
+Source: "{#RepoRoot}resources\webhook-server.ico"; DestDir: "{app}"; Flags: ignoreversion
+
+[Icons]
+Name: "{group}\{#AppName}"; Filename: "{app}\{#AppExeName}"; IconFilename: "{app}\webhook-server.ico"
+Name: "{group}\Uninstall {#AppName}"; Filename: "{uninstallexe}"
+Name: "{commondesktop}\{#AppName}"; Filename: "{app}\{#AppExeName}"; IconFilename: "{app}\webhook-server.ico"; Tasks: desktopicon
+
+[Run]
+Filename: "powershell.exe"; \
+    Parameters: "-NoProfile -ExecutionPolicy Bypass -File ""{app}\scripts\install-service.ps1"" -BinaryPath ""{app}\{#ServiceExeName}"""; \
+    StatusMsg: "Installing Windows Service..."; \
+    Flags: runhidden
+Filename: "{app}\{#AppExeName}"; \
+    Description: "Launch {#AppName}"; \
+    Flags: postinstall nowait skipifsilent
+
+[UninstallRun]
+Filename: "powershell.exe"; \
+    Parameters: "-NoProfile -ExecutionPolicy Bypass -File ""{app}\scripts\uninstall-service.ps1"""; \
+    Flags: runhidden; \
+    RunOnceId: "RemoveWebhookService"

scripts/build-installer.ps1

@@ -0,0 +1,68 @@
+<#
+.SYNOPSIS
+    End-to-end installer build: publish service + GUI, then run Inno Setup
+    to produce dist/WebhookServer-Setup-{version}.exe.
+
+.DESCRIPTION
+    Reads the version from Directory.Build.props. Requires Inno Setup 6 (ISCC.exe)
+    on PATH or in the standard install location. CI runs this same script after
+    setup-dotnet + winget install Inno Setup.
+#>
+[CmdletBinding()]
+param(
+    [string]$Configuration = 'Release',
+    [string]$VersionOverride
+)
+
+$ErrorActionPreference = 'Stop'
+$repoRoot = Split-Path -Parent $PSScriptRoot
+
+function Get-RepoVersion {
+    $propsPath = Join-Path $repoRoot 'Directory.Build.props'
+    [xml]$props = Get-Content $propsPath
+    return $props.Project.PropertyGroup.Version
+}
+
+function Find-InnoCompiler {
+    $candidates = @(
+        'ISCC.exe',  # on PATH
+        'C:\Program Files (x86)\Inno Setup 6\ISCC.exe',
+        'C:\Program Files\Inno Setup 6\ISCC.exe'
+    )
+    foreach ($c in $candidates) {
+        $cmd = Get-Command $c -ErrorAction SilentlyContinue
+        if ($cmd) { return $cmd.Path }
+        if (Test-Path $c) { return $c }
+    }
+    throw "Inno Setup compiler not found. Install with: winget install JRSoftware.InnoSetup"
+}
+
+$version = if ($VersionOverride) { $VersionOverride } else { Get-RepoVersion }
+Write-Host "Building Webhook Server installer v$version" -ForegroundColor Cyan
+
+# 1. Publish both projects.
+$publishSvc = Join-Path $repoRoot 'publish\service'
+$publishGui = Join-Path $repoRoot 'publish\gui'
+Remove-Item -Recurse -Force $publishSvc, $publishGui -ErrorAction SilentlyContinue
+
+& dotnet publish (Join-Path $repoRoot 'src\WebhookServer.Service\WebhookServer.Service.csproj') `
+    -c $Configuration -r win-x64 --self-contained false -o $publishSvc | Out-Host
+if ($LASTEXITCODE -ne 0) { throw 'service publish failed' }
+
+& dotnet publish (Join-Path $repoRoot 'src\WebhookServer.Gui\WebhookServer.Gui.csproj') `
+    -c $Configuration -r win-x64 --self-contained false -o $publishGui | Out-Host
+if ($LASTEXITCODE -ne 0) { throw 'GUI publish failed' }
+
+# 2. Compile installer.
+$iscc = Find-InnoCompiler
+$iss = Join-Path $repoRoot 'installer\webhook-server.iss'
+$dist = Join-Path $repoRoot 'dist'
+New-Item -ItemType Directory -Path $dist -Force | Out-Null
+
+Write-Host "Compiling installer with $iscc"
+& $iscc "/DAppVersion=$version" $iss
+if ($LASTEXITCODE -ne 0) { throw 'Inno Setup compile failed' }
+
+$out = Get-Item (Join-Path $dist "WebhookServer-Setup-$version.exe")
+Write-Host ""
+Write-Host ("Built: {0}  ({1:n0} bytes)" -f $out.FullName, $out.Length) -ForegroundColor Green