fix(cursor): preserve slash-prefixed gsd commands in converted markdown

Keep `/gsd-*` command examples slash-prefixed during Cursor conversion while still normalizing legacy `gsd:` syntax, and add regression coverage for Next Up markdown output.

Made-with: Cursor

tests/cursor-conversion.test.cjs

@@ -35,6 +35,26 @@ Test body
     assert.equal(nameMatch[1], 'gsd-quick', 'skill name is plain scalar');
     assert.ok(!result.includes('name: "gsd-quick"'), 'quoted skill name is not emitted');
   });
+
+  test('preserves slash for slash commands in markdown body', () => {
+    const input = `---
+name: gsd:plan-phase
+description: Plan a phase
+---
+
+Next:
+/gsd:execute-phase 17
+/gsd-help
+gsd:progress
+`;
+
+    const result = convertClaudeCommandToCursorSkill(input, 'gsd-plan-phase');
+
+    assert.ok(result.includes('/gsd-execute-phase 17'), 'slash command remains slash-prefixed');
+    assert.ok(result.includes('/gsd-help'), 'existing slash command is preserved');
+    assert.ok(result.includes('gsd-progress'), 'non-slash gsd: references still normalize');
+    assert.ok(!result.includes('/gsd:execute-phase'), 'legacy colon command form is removed');
+  });
 });
 
 describe('convertClaudeAgentToCursorAgent', () => {