feedback6 R21D: a consume-on-equip item on a full carrier opens the replace dialog and replaces the picked item first (GitHub #263, PR #264); golden: matches 10 of 18 moved (a targeted consumable on a full carrier now destroys the oldest item), the rest unchanged

PRTS 卫戍协议/帮助 §装备: 「达到上限强行佩戴会改为替换装备：指定一件已佩戴装备替换为将要佩戴的装备，并销毁被指定的装备」,
no exception for the 装备时销毁 items. Before: a normal 博士投影 opened no dialog and its kept item pushed the OLDEST
equipped item out (replaceUid ignored); 盟约之币 and the other consumables kept both items.

- server PlayerState.equip (player/items.js): on a full carrier the consume path takes the pick (replaceUid, else the
  oldest) off before onEquip (_takeReplaced), destroys it (onDestroy reason replace) once the effect went through —
  the normal 博士投影 takes the freed slot —, and puts it back at its index when the effect refuses (博士投影 on an elite:
  nothing destroyed)
- client gameLogic equipReplaces: the replace dialog opens for every item on a full carrier, consumables included,
  except an attaching item that completes an item merge and a 博士投影 on an elite; itemAttaches removed
- bots (itemTarget): a consumable whose effect is the same on anyone goes to a carrier with a free slot first (PR #264)
- docs: design/match.md equipment rules, META §2.5, PLAYING 装备 row, research 04

golden (matches only; each traced equip by equip against the parent — the first change of state is a bot's, or the
AI 托管 human seat's, targeted consumable on a full carrier destroying its oldest item): solo-FUNNY-1 (r9 ai_0 随身身份牌),
solo-FUNNY-2 (r9 ai_0 寻呼模块), solo-HARD-2 (r9 ai_0 随身身份牌, r12 简易通讯机), coop2-NORMAL-3 (r9 ai_1 随身身份牌),
coop3-ABYSS-5 (r11 ai_1 随身身份牌), coop4-FUNNY-6 (r4 ai_1 随身身份牌), solo-HARD-9-boosted (r14 ai_0 随身身份牌),
coop2-ABYSS-10-boosted (r13 ai_0 随身身份牌, r14 ai_1 简易通讯机), coop2-NORMAL-14-standins (r9 ai_0 随身身份牌; now won,
14 rounds), coop2-NORMAL-70-diy (r14 h_0 随身身份牌); the bots' free-slot carrier for target-agnostic consumables moves
no scenario by itself; roster / bonds / fields / standins / diy unchanged

server/match/PlayerState.js

@@ -45,7 +45,8 @@
 //   * Items: equip max 2 (a 3rd replaces the equipped item the player picks — g.equip replaceUid, the oldest when
 //     absent; equipped items are otherwise locked: g.destroy refuses them),
 //     2 identical normal items (hand/temp/equipped) merge into the golden item in the hand, items are never sold
-//     (destroy for 0). consume-on-equip items resolve through the effect registry and never take a slot.
+//     (destroy for 0). consume-on-equip items resolve through the effect registry and never take a slot — on a full
+//     carrier they still replace (destroy) the picked item first, leaving a free slot (PRTS 帮助, GitHub #263).
 //   * Tokens (PRTS 卫戍协议/帮助 §战斗部署, user playtest #6): placing an owner with manually deployable summons
 //     (tokens.json `placeable`: 赫默's 医疗探机 and 巫恋's 诅咒娃娃 with their S2, 凯瑟琳's 爬行号·防护单元, 海嗣 / 狼群 /
 //     流形) sends one stack (deployLimit copies — 凯瑟琳 2) to the hand, placed by hand like any piece (no deploy slot);