ci: gofmt files that failed the formatting workflow check

Whitespace-only alignment from gofmt; removes a stray BOM in web.go.

Co-authored-by: Cursor <cursoragent@cursor.com>

CHANGELOG.md

@@ -19,6 +19,10 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); version
 
 ### Changed
 
+- ci: gofmt on eight files that failed the formatting workflow check (panel
+  config, DNS check, domain transfer export, rate-limit tests, auth principal,
+  domain and delivery handlers, web package doc comment).
+
 - docs: full-tree review plan ([docs/plans/code-review.md](docs/plans/code-review.md))
   — architecture, quality, GUI, tests, licence; P0 is domain-admin send-log
   authorization. Roadmap queues that plan ahead of inbound-relay and records

internal/web/web.go

@@ -1,4 +1,4 @@
-// Package web implements the SelfPost control panel's HTTP surface: the
+// Package web implements the SelfPost control panel's HTTP surface: the
 // one-time administrator setup flow (security.md), login/session handling
 // (security.md) and the authenticated shell the later phases build on.
 package web