#6005: glossary limits strict export to what the output shows; escape run's save errors

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FypgCX8G9hbs6XYZFsgjbL

GLOSSARY.md

@@ -52,8 +52,9 @@ _Avoid_: Custom dictionaries
 ## Export
 
 **Strict export**:
-An export that writes nothing, and reports why, when the output would leave out a character or a
-picture the document contains.
+An export that writes nothing, and reports why, when a character or picture the output is meant
+to show would be missing from it. Text the output doesn't show (hidden text, deletions without
+markup) isn't checked.
 _Avoid_: Safe mode, validated export
 
 **Missing glyph**:

apps/wordcraft-cli/src/main.rs

@@ -637,7 +637,7 @@ fn run<S: AsRef<OsStr>>(args: &[S]) -> Result<(), Failure> {
                     return Err(format!("{out}: is a folder, not a file").into());
                 }
                 if !out.to_ascii_lowercase().ends_with(".png") {
-                    wordcraft_engine::io::save_bytes(out, &s.doc)?;
+                    wordcraft_engine::io::save_bytes(out, &s.doc).map_err(engine_error)?;
                 }
             }
             for out in outputs {