style: gofmt -s

让 CI 的 golangci-lint 步骤通过。三个文件被 -s 简化对齐：
注释列对齐空格、结构体 tag 列对齐。

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: areyoubugcoder

internal/authflow/loopback.go

@@ -52,10 +52,10 @@ type CallbackResult struct {
 
 // Flow is a single-shot loopback server.
 type Flow struct {
-	State          string        // 32-byte hex CSRF nonce
-	Port           int           // TCP port we bound to
-	WebOrigin      string        // e.g. https://mp2rss.bugcode.dev
-	Timeout        time.Duration // override DefaultTimeout for tests
+	State     string        // 32-byte hex CSRF nonce
+	Port      int           // TCP port we bound to
+	WebOrigin string        // e.g. https://mp2rss.bugcode.dev
+	Timeout   time.Duration // override DefaultTimeout for tests
 
 	listener net.Listener
 	server   *http.Server

internal/output/output_test.go

@@ -16,9 +16,9 @@ func TestTruncate_CJKAware(t *testing.T) {
 		want string
 	}{
 		{"abcdefgh", 5, "abcd…"},
-		{"中文测试", 4, "中…"},        // 中 is 2 cols → 2 + 1 ellipsis = 3 ≤ 4-1=3 wait
-		{"短", 10, "短"},            // fits, no truncation
-		{"hello", 5, "hello"},      // exactly fits
+		{"中文测试", 4, "中…"},     // 中 is 2 cols → 2 + 1 ellipsis = 3 ≤ 4-1=3 wait
+		{"短", 10, "短"},        // fits, no truncation
+		{"hello", 5, "hello"}, // exactly fits
 		{"", 5, ""},
 	}
 	for _, c := range cases {

internal/version/version_test.go

@@ -14,7 +14,7 @@ func TestCompare(t *testing.T) {
 		{"v2.0.0", "v1.9.9", 1},
 		{"v1.0", "v1.0.0", 0}, // zero-padding
 		{"v1.0", "v1.0.1", -1},
-		{"v1.2.3", "v1.2.3-rc1", 1},  // pre-release loses to release
+		{"v1.2.3", "v1.2.3-rc1", 1}, // pre-release loses to release
 		{"v1.2.3-rc1", "v1.2.3-rc2", -1},
 		{"v1.0.0+abc", "v1.0.0+def", 0}, // build metadata ignored
 		{"dev", "v0.0.1", -1},