M4: resolve indirect initial-view boolean preferences

Read all six boolean ViewerPreferences through the document resolver. Synthetic regressions cover direct/indirect dictionaries, true/false, malformed values and save/reopen.

crates/organize/src/view.rs

@@ -96,7 +96,7 @@ pub fn initial_view(doc: &Document) -> InitialView {
         ..InitialView::default()
     };
     if let Some(vp) = c.get(b"ViewerPreferences").map(|o| doc.resolve(o)).and_then(|o| o.as_dict().cloned()) {
-        let flag = |k: &[u8]| matches!(vp.get(k), Some(Object::Bool(true)));
+        let flag = |k: &[u8]| matches!(vp.get(k).map(|o| doc.resolve(o)).as_deref(), Some(Object::Bool(true)));
         v.fit_window = flag(b"FitWindow");
         v.center_window = flag(b"CenterWindow");
         v.display_title = flag(b"DisplayDocTitle");
@@ -248,3 +248,50 @@ pub fn set_initial_view(doc: &mut Document, v: &InitialView) -> Result<(), Organ
     })?;
     Ok(())
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use pdfcraft_cos::{SaveOptions, write_full};
+    use std::sync::Arc;
+
+    fn flags(view: InitialView) -> [bool; 6] {
+        [view.fit_window, view.center_window, view.display_title, view.hide_menubar, view.hide_toolbar, view.hide_window_ui]
+    }
+
+    #[test]
+    fn initial_view_resolves_indirect_boolean_preferences() {
+        let keys: [&[u8]; 6] = [b"FitWindow", b"CenterWindow", b"DisplayDocTitle", b"HideMenubar", b"HideToolbar", b"HideWindowUI"];
+        for enabled in [true, false] {
+            for indirect_dictionary in [false, true] {
+                let mut doc = Document::new_empty();
+                let boolean = doc.add(Object::Bool(enabled));
+                let mut preferences = Dict::new();
+                for key in keys {
+                    preferences.set(key.to_vec(), Object::Ref(boolean));
+                }
+                let preferences = if indirect_dictionary { Object::Ref(doc.add(preferences)) } else { Object::Dict(preferences) };
+                let root = doc.root().unwrap();
+                doc.update_dict(root, |c| c.set(b"ViewerPreferences".to_vec(), preferences)).unwrap();
+                assert_eq!(flags(initial_view(&doc)), [enabled; 6]);
+                let saved = write_full(&doc, &SaveOptions::default()).unwrap();
+                let reopened = Document::open(Arc::new(saved)).unwrap();
+                assert_eq!(flags(initial_view(&reopened)), [enabled; 6]);
+                assert_eq!(displays_doc_title(&reopened), enabled);
+            }
+        }
+    }
+
+    #[test]
+    fn initial_view_malformed_boolean_preferences_keep_false_defaults() {
+        for value in [Object::Null, Object::Int(1), Object::name("true"), Object::Ref(pdfcraft_cos::ObjRef::new(999_999, 0))] {
+            let mut doc = Document::new_empty();
+            let value = doc.add(value);
+            let mut preferences = Dict::new();
+            preferences.set(b"FitWindow".to_vec(), Object::Ref(value));
+            let root = doc.root().unwrap();
+            doc.update_dict(root, |c| c.set(b"ViewerPreferences".to_vec(), Object::Dict(preferences))).unwrap();
+            assert_eq!(flags(initial_view(&doc)), [false; 6]);
+        }
+    }
+}