style: remove hyphens from compound adjectives in comments and messages

Remove hyphens from compound adjectives such as "logged-in", "one-time", "password-protected", "full-height", "multi-file", and "S3-compatible" in comments, test error messages, and UI labels to improve readability and consistency.

backend/libs/handlers/accounts_test.go

@@ -68,7 +68,7 @@ func TestLoggedInUploadStoresOwnerAndAnonymousUploadDoesNot(t *testing.T) {
 		}
 	}
 	if !foundOwned {
-		t.Fatalf("logged-in upload did not store owner id %q", user.ID)
+		t.Fatalf("logged in upload did not store owner id %q", user.ID)
 	}
 }
 
@@ -674,7 +674,7 @@ func TestAPIDocsHeaderReflectsLoggedInUser(t *testing.T) {
 	body := response.Body.String()
 	header := body[:strings.Index(body, "<main")]
 	if !strings.Contains(header, "Dashboard") || strings.Contains(header, "Sign in") || strings.Contains(header, "Health") {
-		t.Fatalf("api header did not reflect logged-in state: %s", body)
+		t.Fatalf("api header did not reflect logged in state: %s", body)
 	}
 }
 
@@ -775,7 +775,7 @@ func TestAdminOverviewRendersInlineBarDimensions(t *testing.T) {
 	}
 	body := response.Body.String()
 	if !strings.Contains(body, `style="height: 150px"`) {
-		t.Fatalf("admin overview did not render a full-height pixel bar: %s", body)
+		t.Fatalf("admin overview did not render a full height pixel bar: %s", body)
 	}
 	if !strings.Contains(body, `data-height-px="150"`) || !strings.Contains(body, `data-chart-value=`) {
 		t.Fatalf("admin overview did not render chart fallback data attributes: %s", body)