fix: Word's hollow bullet is the letter it is

A Courier New "o" was mapped to ◦ for looks. LibreOffice and Word both
draw the glyph the numbering names, so the nested lists of the gravity
summary now read like theirs.

src/lib/utils/bulletListTypes.ts

@@ -72,8 +72,6 @@ function mapSymbolChar(char: string, font: string | null | undefined): string |
     return map[code & 0xff] ?? null;
   }
   if (isPua) return null;
-  // Word's classic hollow bullet is a Courier New "o" — render it as a real circle.
-  if (char === 'o' && (font ?? '').toLowerCase().startsWith('courier')) return '◦';
   return char;
 }
 

tests/docx-roundtrip.test.ts

@@ -545,7 +545,7 @@ describe('DOCX import of a foreign Word document', () => {
     expect(top.attrs?.bulletChar).toBe('❖'); // Wingdings U+F076
     const nested = walk(top, 'bulletList').find((b) => b !== top)!;
     expect(walk(nested, 'text')[0].text).toBe('Courier hollow');
-    expect(nested.attrs?.bulletChar ?? null).toBe(null); // Courier 'o' = default ◦ at level 2
+    expect(nested.attrs?.bulletChar).toBe('o'); // Word's hollow bullet is the letter, as LO draws it
   });
 
   it("imports Word's legal numbering (%1.%2.) as a multilevel list", () => {

tests/unit/bullet-list-types.test.ts

@@ -53,8 +53,9 @@ describe('bulletCharFromDocx (Word numbering.xml patterns)', () => {
     expect(bulletCharFromDocx('v', 'Wingdings')).toBe('❖');
   });
 
-  it("maps Courier New 'o' (Word's hollow bullet) to ◦", () => {
-    expect(bulletCharFromDocx('o', 'Courier New')).toBe('◦');
+  it("keeps Word's hollow bullet the letter it is", () => {
+    // A Courier New "o" — LibreOffice and Word both draw the glyph, not a ring.
+    expect(bulletCharFromDocx('o', 'Courier New')).toBe('o');
   });
 
   it('passes literal chars in text fonts through', () => {