fix: normalize line endings in PowerShell scripts

The docs/push.ps1 script had CRLF line endings, causing the GitHub
Actions workflow to fail with "pwsh\r: No such file or directory"
on Linux runners.

- Convert docs/push.ps1 to LF line endings
- Add *.ps1 eol=lf to .gitattributes to prevent recurrence

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: natemcmaster

.gitattributes

@@ -50,3 +50,4 @@
 *.sln text=auto eol=crlf
 
 *.sh eol=lf
+*.ps1 eol=lf

docs/push.ps1

@@ -1,35 +1,35 @@
-#!/usr/bin/env pwsh
-param(
-    [string]$SourceCommit,
-    [string]$ApiToken,
-    [switch]$DryRun
-)
-
-$ErrorActionPreference = 'Stop'
-Set-StrictMode -Version 2
-
-Import-Module -Force -Scope Local "$PSScriptRoot/../src/common.psm1"
-
-$workdir = "$PSScriptRoot/../.build/docs/gh-pages"
-Push-Location $workdir
-try {
-
-    if ($env:CI) {
-        exec git config --global credential.helper store
-        Add-Content "$HOME\.git-credentials" "https://x-access-token:${ApiToken}@github.com`n"
-        exec git config --global user.email 'actions@users.noreply.github.com'
-        exec git config --global user.name "GitHub Workflow (${env:GITHUB_ACTOR})"
-        $SourceCommit = $env:GITHUB_SHA
-    }
-
-    if (-not $SourceCommit) {
-        Push-Location $PSScriptRoot
-        $SourceCommit = $(git rev-parse HEAD)
-        Pop-Location
-    }
-    exec git commit --allow-empty -m "Generate documentation from $SourceCommit"
-    exec git push --quiet origin gh-pages
-}
-finally {
-    Pop-Location
-}
+#!/usr/bin/env pwsh
+param(
+    [string]$SourceCommit,
+    [string]$ApiToken,
+    [switch]$DryRun
+)
+
+$ErrorActionPreference = 'Stop'
+Set-StrictMode -Version 2
+
+Import-Module -Force -Scope Local "$PSScriptRoot/../src/common.psm1"
+
+$workdir = "$PSScriptRoot/../.build/docs/gh-pages"
+Push-Location $workdir
+try {
+
+    if ($env:CI) {
+        exec git config --global credential.helper store
+        Add-Content "$HOME\.git-credentials" "https://x-access-token:${ApiToken}@github.com`n"
+        exec git config --global user.email 'actions@users.noreply.github.com'
+        exec git config --global user.name "GitHub Workflow (${env:GITHUB_ACTOR})"
+        $SourceCommit = $env:GITHUB_SHA
+    }
+
+    if (-not $SourceCommit) {
+        Push-Location $PSScriptRoot
+        $SourceCommit = $(git rev-parse HEAD)
+        Pop-Location
+    }
+    exec git commit --allow-empty -m "Generate documentation from $SourceCommit"
+    exec git push --quiet origin gh-pages
+}
+finally {
+    Pop-Location
+}