feedback1 integrate: WE 鸭爵 strategy (圆仔 unblockable, hurt speed +300 %, swaps in the Final Assault and Hidden Core)

docs/META.md

@@ -263,7 +263,7 @@ Every handler method is `(ctx, ev)`; `ev` is shared by all handlers of one dispa
 | `onMerge` | chess or item merge | `{ kind, piece, baseId|itemId, consumed:[uid], area? }` — a chess merge's `area` is where its elite went: 'board' (a consumed copy's tile) \| 'hand' \| 'temp' |
 | `onLevelUp` | shop level up | `{ level, price }` |
 | `onSpend` | a payment's action is complete (buy / refresh / levelUp / reward / effect) | `{ amount, reason, total }` (`total` = funds spent this match) |
-| `onBattleStart` | a battle input is built (normal / unite / boss / hidden); also for the stats preview (`g.unitStats`, DESIGN §18.5) | `{ input: PlayerBattleInput, kind, round, spawns?, preview? }` — mutate/replace `ev.input`. With `ev.preview` true (no `ev.spawns`) a handler must NOT change match state or draw match rng: the preview only reads the input |
+| `onBattleStart` | a battle input is built (normal / unite / boss / hidden); also for the stats preview (`g.unitStats`, DESIGN §18.5) | `{ input: PlayerBattleInput, kind, round, spawns?, routes?, side?, preview? }` — mutate/replace `ev.input`; `ev.spawns` (the field's spawn list, shared by a boss field's players) may be edited in place. Boss / hidden fields also carry the wave's `routes` and the player's `side` ('L' / 'R' on a pair field — its half is the routes ending left / right of the middle column — null on a one-player field), so a handler can edit only the player's own enemies (鸭爵's swap). With `ev.preview` true (no `ev.spawns`) a handler must NOT change match state or draw match rng: the preview only reads the input |
 | `onBattleResult` | SETTLE (normal rounds) and after boss fields | `{ result, lpLoss, perfect, unite?|boss? }` |
 | `onChoicePick` | a 机变 card was applied (the card's own `choice:` handler runs first, then every source observes) | `{ card, family, picker, forTeammate }` |
 | `onEquip` | `g.equip` (item handler only) | `{ item, target, golden, consumed, keep, error }` — see §2.5 |