feedback7 UIBACK: upgrading the 调度中心 opens the new shop slot EMPTY — the next refresh or round start fills it; 0.2.0's fill-at-once (464a823, item 19) reverted (GitHub #332 and PR #333 by @2321Robin, official recording BV1AXwuzdEys 1:39 — authored by them: the economy.js change, the rewritten level-slots test and the docs hunks applied as reviewed, without the PR's UPGRADE_FILLS_NEW_SLOTS flag and LOCAL RULING comment: the empty slot is the rule): the shop bar draws a null operator slot as a bare dashed frame (EmptyCard, inert scard--sold) instead of the SOLD OUT 「已招募」 frame, one new UI string in the four packs; META.md §3 and §7 and PLAYING.md say so; the dev mock opens the slot empty and survives null slots; test/ui/shop-empty-slot.e2e.test.js; golden: only matches moves, all 18 (the bots' shop RNG stream) — end results changed in solo-FUNNY-1 defeat→victory, solo-NORMAL-1 and solo-HARD-1 victory→defeat, solo-HARD-2 and solo-ABYSS-1 defeat→eliminated, coop2-NORMAL-14-standins defeat→victory (2 distinct stand-ins fielded: golden-standins.test.js asks ≥ 2); roster, bonds, fields, standins, diy unchanged

public/css/screens/game-shop.css

@@ -156,6 +156,9 @@
 .scard__idesc { font-size: .12rem; line-height: 1.45; color: var(--text-lo); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
 .scard--sold { background: repeating-linear-gradient(135deg, rgba(255, 255, 255, .02) 0 .08rem, transparent .08rem .16rem), rgba(8, 11, 10, .75); border: 1px dashed var(--line-2); justify-content: center; align-items: center; }
 .scard__soldtxt { display: flex; flex-direction: column; align-items: center; gap: .02rem; font-size: .16rem; color: var(--text-dim); }
+/* a slot the 调度中心's upgrade opened and nothing filled yet (ui/shopBar.js EmptyCard, also .scard--sold): the bare frame — no hatching,
+   no SOLD OUT text */
+.scard--sold.scard--empty { background: rgba(8, 11, 10, .4); border-color: var(--line); }
 
 /* ---- funds card ---- */
 .funds { width: 1.18rem; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .08rem; padding: .06rem; border-left: 1px solid var(--line); }