fix: address Copilot review on #347 (explicit eol=lf + comment honesty)

[Chris-Wolfgang]

Summary

Two stylistic follow-ups Copilot flagged on #347 that I pushed after the merge — they didn't make it in.

Changes

1. .gitattributes: *.ps1 text → *.ps1 text eol=lf

Every other entry in .gitattributes spells out eol=lf explicitly:

*.cs text eol=lf
*.csx text eol=lf
*.csproj text eol=lf
*.sln text eol=lf
... etc.

The bare *.ps1 text form relied on the global * text=auto eol=lf resolving to LF — behaviorally equivalent, but inconsistent with the file's own convention and ambiguous to anyone reading later.

2. .editorconfig [*.ps1] comment rewrite

The comment said "Use LF + no BOM..." but the section no longer sets end_of_line or charset — those come from the [*] global section above. The old comment described what the previous CRLF/BOM overrides used to enforce, not what the current section does.

Every other [*.xxx] section in .editorconfig only overrides what differs from [*] (just indent_size), so the [*.ps1] section is intentionally minimal. New comment explains both the convention and why LF + no-BOM matters in this repo (the #!/usr/bin/env pwsh shebang at the top of every script in scripts/).

What does NOT change

• Behavior — LF + UTF-8-no-BOM was the effective config after fix(eol): make *.ps1 canonical LF + no BOM for shebang compat #347; this PR only sharpens the declarations and comment
• File content — no .ps1 files rewritten

Note about the protected-files guard

Touches .editorconfig (protected). Maintainer override required — same path as #347 itself.

Follow-up

Once this lands, the 24 fleet-sync PRs to apply the #347 + this fix will use these final declarations directly.

Test plan

• Maintainer override + merge
• After merge, fleet-sync PRs use the post-fix(eol): make *.ps1 canonical LF + no BOM for shebang compat #347-and-this state

[Copilot]

Pull request overview

Refines template repo EOL declarations and documentation to align PowerShell handling with the established “explicit LF” convention and keep .editorconfig commentary accurate.

Changes:

• Make .gitattributes explicitly declare *.ps1 text eol=lf (matching other entries in the file).
• Rewrite the .editorconfig [*.ps1] comment to describe that the section only overrides indentation and that LF/UTF-8 comes from [*].

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
.gitattributes	Makes PowerShell LF normalization explicit via eol=lf to match file conventions.
.editorconfig	Updates the [*.ps1] comment to reflect current settings and rationale for LF/no-BOM.