lint: explicit imports in remaining test and module files (S2208)

Replace glob imports (`use super::*`, `use crate::*`, `use sig::*`) with
the names each file uses, in scriptcheck, pdf, render, text and ui-egui.
No code changes.

crates/scriptcheck/src/analyze.rs

@@ -34,7 +34,7 @@ mod sig;
 
 pub(crate) use declared::{Declared, declarations};
 use features::platform_name;
-use sig::*;
+use sig::{COMPOUND, LineBreaks, Read, Sig, ends_value, for_in, goes_on_after, goes_on_with, is, member_mark, word};
 
 /// An `#include` line: what it names, its line, and the folders `#includepath` named at that point
 /// (one list, shared by every line it applies to).

crates/scriptcheck/src/analyze/declared.rs

@@ -1,6 +1,7 @@
 //! The names declared, read before the analysis.
 
-use super::*;
+use super::sig::{LineBreaks, Read, Sig, for_in, goes_on_after, goes_on_with, is, member_mark, word};
+use super::{Acc, Brackets, HashSet, Lexer, T};
 
 /// The names a file's function bodies and its global code declare, read before the analysis. A
 /// function's `var` statements and the function declarations directly in its body make the names

crates/scriptcheck/src/analyze/features.rs

@@ -1,6 +1,7 @@
 //! The platform features, menu commands and later syntax the analysis recognises.
 
-use super::*;
+use super::sig::{NEWER, Sig, is, member_mark, newer_number, unquote, word};
+use super::{Analyzer, FeatureId, OutsideId, Pending, T, catalog, report};
 
 /// A global name of the platform the report looks for (`$`, `File`, `Socket`, `alert`, `eval`…).
 pub(super) fn platform_name(n: &str) -> bool {