Add bash wrapper and fix MCP server URL encoding

Add build.sh wrapper:
- Create bash script that calls Build.ps1 with pwsh
- Pass all arguments correctly using "$@"
- Auto-generate from Resources via generate-scripts

Fix MCP server startup failure:
- Use URL-safe Base64 encoding for MCP authentication secret
- Replace / with _, + with -, remove trailing =
- Prevents MapMcp() failure when secret contains URL-unsafe chars

Author: gfraiteur

Build.ps1

@@ -98,7 +98,7 @@ if (-not $Interactive -or $BuildArgs)
         if ($needsBuild)
         {
             # Build is needed
-            Write-Host "Rebuilding Build$ProductName..." -ForegroundColor Cyan
+            Write-Host "Building Build$ProductName..." -ForegroundColor Cyan
             & dotnet build $projectPath
             if ($LASTEXITCODE -ne 0)
             {
@@ -121,11 +121,7 @@ if (-not $Interactive -or $BuildArgs)
                 throw "Build succeeded but output DLL '$outputDll' not found."
             }
         }
-        else
-        {
-            Write-Host "Build cache valid, skipping build." -ForegroundColor Green
-        }
-
+      
         # Run the project using dotnet exec (faster than dotnet run)
         if (-not $outputDll -or -not (Test-Path $outputDll))
         {

DockerBuild.ps1

@@ -696,7 +696,8 @@ if (-not $BuildImage)
                 # Generate 128-bit (16 byte) random secret for authentication
                 $randomBytes = New-Object byte[] 16
                 [Security.Cryptography.RandomNumberGenerator]::Fill($randomBytes)
-                $mcpSecret = [Convert]::ToBase64String($randomBytes)
+                # Use URL-safe Base64 encoding (replace / with _, + with -, remove =)
+                $mcpSecret = [Convert]::ToBase64String($randomBytes).Replace('/', '_').Replace('+', '-').TrimEnd('=')
                 Write-Host "Generated MCP authentication secret" -ForegroundColor Cyan
 
                 # Use the MCP server snapshot saved before cleanup

build.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+# *** DO NOT EDIT THIS FILE DIRECTLY ***
+# This file is auto-generated from src/PostSharp.Engineering.BuildTools/Resources/build.sh
+# Edit the source version, then run `./Build.ps1 generate-scripts` to regenerate this file.
+
+# Wrapper script to call Build.ps1 with PowerShell
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+pwsh -File "$SCRIPT_DIR/Build.ps1" "$@"

src/PostSharp.Engineering.BuildTools/ContinuousIntegration/GenerateScriptsCommand.cs

@@ -27,6 +27,7 @@ public static bool Execute( BuildContext context, CommonCommandSettings settings
         }
 
         EmbeddedResourceHelper.ExtractScript( context, "Build.ps1", "" );
+        EmbeddedResourceHelper.ExtractScript( context, "build.sh", "" );
 
         // Docker.
         if ( product.UseDocker )

src/PostSharp.Engineering.BuildTools/Resources/DockerBuild.ps1

@@ -696,7 +696,8 @@ if (-not $BuildImage)
                 # Generate 128-bit (16 byte) random secret for authentication
                 $randomBytes = New-Object byte[] 16
                 [Security.Cryptography.RandomNumberGenerator]::Fill($randomBytes)
-                $mcpSecret = [Convert]::ToBase64String($randomBytes)
+                # Use URL-safe Base64 encoding (replace / with _, + with -, remove =)
+                $mcpSecret = [Convert]::ToBase64String($randomBytes).Replace('/', '_').Replace('+', '-').TrimEnd('=')
                 Write-Host "Generated MCP authentication secret" -ForegroundColor Cyan
 
                 # Use the MCP server snapshot saved before cleanup

src/PostSharp.Engineering.BuildTools/Resources/build.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+# *** DO NOT EDIT THIS FILE DIRECTLY ***
+# This file is auto-generated from src/PostSharp.Engineering.BuildTools/Resources/build.sh
+# Edit the source version, then run `./Build.ps1 generate-scripts` to regenerate this file.
+
+# Wrapper script to call Build.ps1 with PowerShell
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+pwsh -File "$SCRIPT_DIR/Build.ps1" "$@"