feedback5 WE: the 整备区 rules of PRTS 卫戍协议/帮助 §手牌区 (GitHub #82, second part) — a full regular hand refuses every purchase and reward pick, also one whose copy would complete a merge at once ("当常规手牌区全满无空位时，玩家将无法执行使手牌溢出的操作" — "例如招募/购入等通常情况下会增加手牌的操作"; BWIKI 盟约 says the same with no exception; the reporter checked it in the official game), and a free regular slot pulls the 临时整备区 in at once ("常规手牌区出现空位时自动移入"): PlayerState._fillHandFromTemp runs in every recompute, the temp row right to left (the order it fills, [ASSUMED]) into the hand's free slots right to left — after a sale, a deployment from the hand, a merge that consumed hand copies, an item equipped / destroyed / used, a summon stack removed with its owner. invariants.js: temp holds pieces only while the hand is full. The client's refusal path follows (gameLogic.shopBlockReason: 整备区已满 on every card — a one-line change in a file the R5 split moves). Bots: a full hand never tries a purchase, an affordable third copy of a held pair sheds the weakest hand single first (never one of this prep), resolveTemp decides temp right to left. Tests: test/match/feedback5-hand.test.js; merge / hardening / playtest6-elite-to-board / economy / prep-bench / uiFixes updated to the rule. Docs: META §1 Hand, DESIGN §6, PLAYING §3, research 00-INDEX / 01 (the old "a merge-completing purchase is allowed" corrected). Golden: 3 match scenarios moved (coop2-NORMAL-3, solo-HARD-9-boosted, coop2-ABYSS-10-boosted — bot seats that reached a full hand: the merge-completing purchase refused or a single shed first, temp pieces moving in by themselves); every battle digest unchanged

docs/research/00-INDEX.md

@@ -73,7 +73,7 @@ Boss rounds: the battle continues past the timer. Merged team LP drains **1/s af
 
 The visible chess per tier are 16/17/19/22/19/19. The item slot uses the same tier shares, then picks uniformly within the tier [ASSUMED].
 
-**Merge:** 3 copies of the same chess (board or hand) merge into 1 elite (`_b`), sent to the **hand** — or, when a consumed copy was deployed, to **that copy's board position** (PRTS 卫戍协议/帮助 "若消耗已部署至作战区的干员，则发送至作战区对应位置"; 01 A1 row 7). 风丸 needs 2. Elites never merge. The equipment of the merged copies returns to the hand. Reward: the shop temporarily shows 3 operators of tier min(shopLv+1, 6) at price **0**; take 1; no refresh or freeze; gone at round end. A purchase that completes a merge is allowed with a full hand. [VERIFIED]
+**Merge:** 3 copies of the same chess (board or hand) merge into 1 elite (`_b`), sent to the **hand** — or, when a consumed copy was deployed, to **that copy's board position** (PRTS 卫戍协议/帮助 "若消耗已部署至作战区的干员，则发送至作战区对应位置"; 01 A1 row 7). 风丸 needs 2. Elites never merge. The equipment of the merged copies returns to the hand. Reward: the shop temporarily shows 3 operators of tier min(shopLv+1, 6) at price **0**; take 1; no refresh or freeze; gone at round end. A full regular hand refuses every purchase, also one that would complete a merge (PRTS 卫戍协议/帮助 §手牌区 "例如招募/购入等通常情况下会增加手牌的操作"; corrected in 0.2.0, GitHub #82 — this line used to allow it). [VERIFIED]
 
 ## 4. Board, hand, combat