feedback1d WN: a field opened after 暴鸰's drop draws it without its bomb (UnitInfo.form)

The bomb-less mode lived only in the client that saw the fx 'phase' event. UnitInfo now
carries an enemy's recorded mode (unit.form, set by kitBombd at the release), and the
renderer keeps it on the unit info, so a field watched or rejoined later starts on the
*_2 clips.

test/render/feedback1d-bombd.test.js

@@ -88,6 +88,13 @@ describe('D4 暴鸰: the drone lets go of its bomb on screen', () => {
     assert.equal(v.atkInterval, 5, 'a one-off drop leaves the attack rhythm alone');
   });
 
+  test('render/app.js keeps UnitInfo.form (a field opened after the drop) and hands the atk kind to the view', () => {
+    const src = readFileSync(path.join(ROOT, 'public/js/render/app.js'), 'utf8');
+    assert.match(src, /function addInfo\(u\)[\s\S]{0,2000}form: typeof u\.form === 'string' \? u\.form : undefined/);
+    assert.match(src, /src\.onAttack\?\.\(tgt, now, e\[3\]\)/);
+    assert.match(src, /v\.windUp\(t - upcomingT, e\[3\]\)/);
+  });
+
   test('the drop draws a falling bomb at the sim\'s speed and the mode change draws nothing of its own', () => {
     assert.ok(PROJ.droneBomb, 'PROJ.droneBomb');
     assert.equal(PROJ.droneBomb.speed, PROJECTILE_SPEEDS.droneBomb);