diff --git a/tests/powershell/Install.Tests.ps1 b/tests/powershell/Install.Tests.ps1
new file mode 100644
index 0000000..818ec51
--- /dev/null
+++ b/tests/powershell/Install.Tests.ps1
@@ -0,0 +1,195 @@
+BeforeAll {
+    $repositoryRoot = Split-Path -Parent $PSScriptRoot
+    $repositoryRoot = Split-Path -Parent $repositoryRoot
+    $installScriptPath = Join-Path $repositoryRoot 'install.ps1'
+    $originalLocalAppData = $env:LOCALAPPDATA
+    $realProfilePath = $PROFILE
+    $realProfileSnapshot = if (Test-Path -LiteralPath $realProfilePath -PathType Leaf) {
+        [pscustomobject]@{ Exists = $true; Hash = (Get-FileHash -LiteralPath $realProfilePath -Algorithm SHA256).Hash }
+    }
+    else {
+        [pscustomobject]@{ Exists = $false; Hash = $null }
+    }
+}
+
+AfterAll {
+    $env:LOCALAPPDATA = $originalLocalAppData
+    $currentSnapshot = if (Test-Path -LiteralPath $realProfilePath -PathType Leaf) {
+        [pscustomobject]@{ Exists = $true; Hash = (Get-FileHash -LiteralPath $realProfilePath -Algorithm SHA256).Hash }
+    }
+    else {
+        [pscustomobject]@{ Exists = $false; Hash = $null }
+    }
+    $currentSnapshot.Exists | Should -Be $realProfileSnapshot.Exists
+    $currentSnapshot.Hash | Should -Be $realProfileSnapshot.Hash
+}
+
+Describe 'install.ps1 release bootstrap behavior' {
+    BeforeEach {
+        $env:LOCALAPPDATA = "C:\Users\Profile'Test\AppData\Local"
+        $global:installDownloadUris = [System.Collections.Generic.List[string]]::new()
+        $global:installDownloadPaths = [System.Collections.Generic.List[string]]::new()
+        $global:installCopyRecords = [System.Collections.Generic.List[object]]::new()
+        $global:installRemovedPaths = [System.Collections.Generic.List[string]]::new()
+        $global:installNewItemPaths = [System.Collections.Generic.List[string]]::new()
+        $global:installContentPaths = [System.Collections.Generic.List[string]]::new()
+        $global:installHashRecords = [System.Collections.Generic.List[object]]::new()
+        $global:installImportRecords = [System.Collections.Generic.List[object]]::new()
+        $global:installProfileAdds = [System.Collections.Generic.List[object]]::new()
+        $global:installProfileExists = $false
+        $global:installExistingProfileContent = @()
+        $global:installHashMismatchCall = 0
+        $global:installHashCall = 0
+        $global:installHostArchitecture = [System.Runtime.InteropServices.RuntimeInformation]::OSArchitecture
+        $global:installExpectedAsset = switch ($global:installHostArchitecture) {
+            'X64' { 'dev-windows-x86_64.exe' }
+            'Arm64' { 'dev-windows-aarch64.exe' }
+            default { throw "Unsupported test host architecture: $global:installHostArchitecture" }
+        }
+
+        Mock Invoke-WebRequest {
+            param($Uri, $OutFile)
+            [void] $global:installDownloadUris.Add($Uri)
+            [void] $global:installDownloadPaths.Add($OutFile)
+        }
+        Mock Get-Content {
+            param($LiteralPath, $Raw)
+            [void] $global:installContentPaths.Add($LiteralPath)
+            if ($LiteralPath -like '*.sha256') {
+                return @(
+                    "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA $($global:installExpectedAsset)",
+                    'BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB DevNav.psm1'
+                )
+            }
+            if ($global:installProfileExists) { return $global:installExistingProfileContent }
+            return ''
+        }
+        Mock Get-FileHash {
+            param($LiteralPath, $Algorithm)
+            $global:installHashCall++
+            [void] $global:installHashRecords.Add([pscustomobject]@{ LiteralPath = $LiteralPath; Algorithm = $Algorithm })
+            if ($global:installHashMismatchCall -eq $global:installHashCall) {
+                return [pscustomobject]@{ Hash = 'CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC' }
+            }
+            if ($LiteralPath -like '*.psm1') { return [pscustomobject]@{ Hash = 'BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB' } }
+            return [pscustomobject]@{ Hash = 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' }
+        }
+        Mock New-Item {
+            param($Path)
+            [void] $global:installNewItemPaths.Add($Path)
+            [pscustomobject]@{ FullName = $Path }
+        }
+        Mock Copy-Item {
+            param($LiteralPath, $Destination, $Force)
+            [void] $global:installCopyRecords.Add([pscustomobject]@{ LiteralPath = $LiteralPath; Destination = $Destination; Force = $Force })
+        }
+        Mock Remove-Item {
+            param($LiteralPath)
+            [void] $global:installRemovedPaths.Add($LiteralPath)
+        }
+        Mock Import-Module {
+            param($Name, $Force)
+            [void] $global:installImportRecords.Add([pscustomobject]@{ Name = $Name; Force = $Force })
+        }
+        Mock Test-Path {
+            param($LiteralPath, $PathType)
+            return $global:installProfileExists
+        }
+        Mock Add-Content {
+            param($LiteralPath, $Value)
+            [void] $global:installProfileAdds.Add([pscustomobject]@{ LiteralPath = $LiteralPath; Value = $Value })
+        }
+    }
+
+    It 'downloads and installs the verified host-architecture release with SHA-256 checks' {
+        & $installScriptPath -ModifyProfile:$false
+
+        $global:installDownloadUris | Should -Be @(
+            "https://github.com/JacobOptimiza/dev-nav/releases/latest/download/$($global:installExpectedAsset)",
+            'https://github.com/JacobOptimiza/dev-nav/releases/latest/download/DevNav.psm1',
+            'https://github.com/JacobOptimiza/dev-nav/releases/latest/download/SHA256SUMS.txt'
+        )
+        $global:installDownloadPaths.Count | Should -Be 3
+        $global:installHashRecords.Count | Should -Be 2
+        $global:installHashRecords.Algorithm | Should -Be @('SHA256', 'SHA256')
+        $global:installHashRecords.LiteralPath | Should -Be @($global:installDownloadPaths[0], $global:installDownloadPaths[1])
+        $global:installCopyRecords.Count | Should -Be 2
+        $global:installCopyRecords.LiteralPath | Should -Be @($global:installDownloadPaths[0], $global:installDownloadPaths[1])
+        $global:installCopyRecords.Destination | Should -Be @(
+            "C:\Users\Profile'Test\AppData\Local\Programs\DevNav\dev.exe",
+            "C:\Users\Profile'Test\AppData\Local\Programs\DevNav\DevNav.psm1"
+        )
+        $global:installCopyRecords.Force | Should -Be @($true, $true)
+        $global:installImportRecords.Count | Should -Be 1
+        $global:installImportRecords.Name | Should -Be "C:\Users\Profile'Test\AppData\Local\Programs\DevNav\DevNav.psm1"
+        $global:installImportRecords.Force | Should -BeTrue
+        $global:installProfileAdds.Count | Should -Be 0
+        $global:installRemovedPaths | Should -Be $global:installDownloadPaths
+        Should -Invoke Test-Path -Times 0 -Scope It
+        $global:installContentPaths | Should -Not -Contain $PROFILE
+        Should -Invoke Add-Content -Times 0 -Scope It
+        $global:installNewItemPaths | Should -Not -Contain (Split-Path -Parent $PROFILE)
+    }
+
+    It 'imports the installed module with a safely quoted profile path' {
+        & $installScriptPath
+
+        $global:installProfileAdds.Count | Should -Be 1
+        $global:installProfileAdds[0].LiteralPath | Should -Be $PROFILE
+        $global:installProfileAdds[0].Value | Should -Be "`nImport-Module 'C:\Users\Profile''Test\AppData\Local\Programs\DevNav\DevNav.psm1'"
+        $global:installRemovedPaths | Should -Be $global:installDownloadPaths
+    }
+
+    It 'does not append a duplicate import when the profile already contains it' {
+        $global:installProfileExists = $true
+        $global:installExistingProfileContent = "Import-Module 'C:\Users\Profile''Test\AppData\Local\Programs\DevNav\DevNav.psm1'"
+
+        & $installScriptPath
+
+        $global:installProfileAdds.Count | Should -Be 0
+    }
+
+    It 'fails when the executable checksum entry is missing' {
+        Mock Get-Content {
+            param($LiteralPath, $Raw)
+            if ($LiteralPath -like '*.sha256') { return 'BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB DevNav.psm1' }
+            return ''
+        }
+
+        { & $installScriptPath -ModifyProfile:$false } | Should -Throw "*No se encontró el checksum publicado para $($global:installExpectedAsset).*"
+        $global:installCopyRecords | Should -BeNullOrEmpty
+        $global:installImportRecords.Count | Should -Be 0
+        $global:installRemovedPaths | Should -Be $global:installDownloadPaths
+    }
+
+    It 'fails when the module checksum entry is missing' {
+        Mock Get-Content {
+            param($LiteralPath, $Raw)
+            if ($LiteralPath -like '*.sha256') { return "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA $($global:installExpectedAsset)" }
+            return ''
+        }
+
+        { & $installScriptPath -ModifyProfile:$false } | Should -Throw '*No se encontró el checksum publicado para DevNav.psm1.*'
+        $global:installCopyRecords | Should -BeNullOrEmpty
+        $global:installImportRecords.Count | Should -Be 0
+        $global:installRemovedPaths | Should -Be $global:installDownloadPaths
+    }
+
+    It 'fails when the executable checksum does not match' {
+        $global:installHashMismatchCall = 1
+
+        { & $installScriptPath -ModifyProfile:$false } | Should -Throw "*El checksum de $($global:installExpectedAsset) no coincide*"
+        $global:installCopyRecords | Should -BeNullOrEmpty
+        $global:installImportRecords.Count | Should -Be 0
+        $global:installRemovedPaths | Should -Be $global:installDownloadPaths
+    }
+
+    It 'fails when the module checksum does not match' {
+        $global:installHashMismatchCall = 2
+
+        { & $installScriptPath -ModifyProfile:$false } | Should -Throw '*El checksum de DevNav.psm1 no coincide*'
+        $global:installCopyRecords | Should -BeNullOrEmpty
+        $global:installImportRecords.Count | Should -Be 0
+        $global:installRemovedPaths | Should -Be $global:installDownloadPaths
+    }
+}