feedback6 R21B: 联防 plays on the round's battlefield again — its terrain, crates, water, devices and runes, as in 0.1.4 (the owner's decision of 2026-10-07, 「官服保留地形，改回去」; GitHub #244). 0.2.0's escaped-level map (8a436249, §25.6.4) is withdrawn: that map is the placeholder grid all 39 wave template levels carry, tile for tile; only the 11 stage levels have terrain. match/unitePhase.js _uniteOpts fields this.stageId in both combat modes, unite.js uniteStageId is removed, the client draws the 联防 on the board's stage again (screens/game.js: 0.1.4's ownStage / baseStage, no map switch, nothing to restore on leaving), the dev mock likewise. Kept from 0.2.0: own-board 突袭 / 乌尔比安 S3 landings (onOwnBoard, raidTile untouched), the bounty payee, the 联防 BGM, the SETTLE result box. data/stages.json keeps the two kind 'unite' records (no field uses them; engine tests use them as a plain two-halves road); tools/build-data.mjs comments only, an offline rebuild reproduces data/ byte for byte. The 联防 battle input is byte-identical to v0.1.4's in 20 cases (5 stages × 1 / 2 helpers × both combat modes); GitHub #41 item 3 (野鬃 pushing walkers back across the gate onto the other half) is back with v0.1.4's numbers, none off the map. Tests: test/match/feedback5-unite-map.test.js rewritten (6, all fail on the parent), test/e2e/coop.e2e.mjs checks the 联防 field's drawn stage; docs: DATA §12, META §4, PLAYING §5, design/geometry-time, I18N, the §25.6.4 pointer; golden: fields unite-1 (escaped_single → act1autochess_m02) and unite-2 (escaped_multi → act1autochess_m07), the stages of 0.1.4, and the co-op matches whose 联防 rounds come out differently on the round's map — coop2-NORMAL-3, coop2-HARD-4, coop3-ABYSS-5, coop4-ABYSS-7, coop2-NORMAL-8-serverrun, coop2-NORMAL-14-standins (now a victory)

public/dev/game-mock.js

@@ -472,8 +472,8 @@ function startCombat(phase) {
     const e = data.lookup('enemies', bossRec.enemyKey);
     enemies.push({ id: id++, kind: 'enemy', side: 'enemy', ownerId: ME, defId: bossRec.enemyKey, name: bossRec.name, spine: bossRec.enemyKey, avatar: bossRec.enemyKey, x: 10, y: 3, facing: -1, maxHp: e?.stats?.maxHp || 1e5, hp: (e?.stats?.maxHp || 1e5) * 0.62, spawnAt: 0, dir: 0, boss: true, dead: false });
   }
-  // the 联防 field fights on its own map (server unite.js uniteStageId: 2 helpers → escaped_multi; GitHub #41)
-  const field = { fieldId, kind, rect, stageId: kind === 'unite' ? 'act1autochess_escaped_multi' : pub.stageId, units: units.map((u) => ({ ...u })) };
+  // every field — 联防 too — is fought on the round's battlefield (server unite.js; 0.2.0's escaped-level map withdrawn)
+  const field = { fieldId, kind, rect, stageId: pub.stageId, units: units.map((u) => ({ ...u })) };
   store.patch('match', { field });
   const allyState = units.map((u) => ({ ...u, hp: u.maxHp * (0.55 + rnd() * 0.45), sp: rnd() * 20, spMax: 20 }));
   const t0 = performance.now();