fix: 禁用最后一个选策略的玩家的跳过按钮

docs/history/0.2.5.md

@@ -704,3 +704,11 @@ default skill is S2, which is the skill this correction changes.
 | 耶拉 was on the pre-change lineup; that seat is then eliminated and the stored lineup is empty | `solo-ABYSS-1`: defeat at round 13 → eliminated at round 12, team LP 0 → null. The pre-change lineup had 耶拉 `3_20_a` and 至简 `3_13_a`. First divergence round 8: LP 27 → 18, killed 19 → 10, leaks 0 → 9. `coop4-ABYSS-7`: still a defeat at round 13, team LP 0, boss pool 4821366 → 3417504. ai_1 is eliminated at round 13; the pre-change lineup had 至简 `3_13_a` and 耶拉 `3_20_a`. First divergence round 8: ai_1 LP 19 → 20, killed 2 → 3, leaks 7 → 6. ai_0's lineup also changes and has no funnel chess id before or after |
 | 耶拉 plus other funnel operators, lineup unchanged, same victory and the same team LP 130 | `coop4-FUNNY-6`: ai_0 耶拉 `3_20_a`, ai_1 荒芜拉普兰德 `6_18_a`, ai_3 洛洛 `2_10_a`. First divergence round 11, ai_0's kjeragShip layers 26 → 23 |
 | No 耶拉 on the final lineup. The diverging round's pieces and skill choice are not stored | `coop2-NORMAL-1-coverage-standins`: still a defeat, team LP 0, boss pool 25040 unchanged. ai_0's final lineup includes 荒芜拉普兰德 `6_18_a`. First divergence round 7, the other seat's miraShip layer 5 → 6. `coop2-NORMAL-14-standins`: victory, team LP 31 → 40 (ai_0 LP 13 → 22). Neither final lineup contains a funnel chess id. First divergence round 10 bond layers (raidShip 26 → 28, steadShip 16 → 18); that round's board hash is unchanged |
+
+### 30.31 Strategy skip eligibility
+
+The strategy-selection page only enables skipping while another unpicked player remains. The published order
+keeps finished players for display, so its total length cannot establish that a skip has a recipient. The client
+counts order entries absent from `draft.picks`, alongside the existing turn and quota checks. The server's
+`skipBand` already rejects the final player with `BAD_TARGET / nobody to pass to`; its rule remains unchanged.
+Regression covers normal two-, three- and four-human browser flows, the final turn, and exhausted quota.