feedback4: every melee chess whose trait reads 可以放置于远程位 may stand on a 高台, normal or elite, any module

The owner's decision of 2026-10-05 reverses the one of 2026-10-04 (elite 歌蕾蒂娅 with HOK-Y only) and follows PRTS:
the line is the 钩索师 / 推击手 branch trait (歌蕾蒂娅, 崖心, 见行者, normal and elite) and every module keeps it, so
the loadout no longer matters. Raised with the PRTS source in PR #69 by @sunstricken (its own change covered only
歌蕾蒂娅; its test page is not taken). GitHub #153.

- shared/highGround.js: meleeOnHighGround(rec) reads the trait without a module (traitBase, else trait); no module id.
- board.js positionClass(rec) widens those six records; placeClass(ps, rec) = positionClass(rec) for every server
  check (g.move, swaps, merge tile, evictions, audit, invariants). The client's piecePosition mirrors it.
- bot.js: the existing 高台 preference (a 高台 whose range covers the road) now applies to all six; comments.
- Docs: DESIGN §3 and §6.6, DATA (placement), PLAYING §4, META, research 03 C2, code comments. data/ unchanged
  (build-data --offline gives identical files).
- Tests: board, feedback1-placement (each holder with default / no module / every module on each 高台, a 重装
  refused, client highlights, swap, battle, bots), gameLogic.

Golden: 16 scenarios moved, every one because tools/golden.mjs lays operators out by positionClass and now places
歌蕾蒂娅 (normal, or elite with HOK-X) beside the enemy path like a ranged operator instead of on the busiest melee
tile, which shifts the others: roster-010, roster-012, roster-029, roster-040, roster-041; bond-deputShip-high,
bond-indomShip-low, bond-preciShip-low, bond-preciShip-high, bond-suntShip-low, bond-swiftShip-high; boss-boss_2-pair,
boss-boss_4-pair, boss-boss_6-pair, hidden-boss_8-pair, hidden-boss_10-pair. roster-031 (elite with HOK-Y, already
widened) and all matches are unchanged.

server/match/bot.js

@@ -34,8 +34,10 @@
 //      covering units against the round's DEF / RES, blocker hold time, flyers only for anti-air) is maximized
 //      greedily — blockers first, then damage dealers by DPS, then healers — over every
 //      (legal tile, direction) pair of the server's deploy map (no 深水区). A MELEE operator is planned on the ground
-//      tiles, where it blocks — except elite 歌蕾蒂娅 carrying HOK-Y, who may also take a 高台 (placeClass; owner's
-//      decision 2026-10-04). She stays a blocker in the lineup (basePositionClass). Each unit's range grid — the one it is
+//      tiles, where it blocks — except one whose trait reads 「可以放置于远程位」 (歌蕾蒂娅, 崖心, 见行者, any module:
+//      placeClass 'all', shared/highGround.js), which takes a 高台 whose range covers the enemy road, else the ground
+//      (owner 2026-10-04 for the 高台 preference, 2026-10-05 for who may use one). It stays a blocker in the lineup
+//      (basePositionClass). Each unit's range grid — the one it is
 //      deployed with, rangeRec (loadoutRecord attackRangeGrid) — is rotated per direction (DESIGN §3; RIGHT is tried first
 //      and kept on ties, so symmetric ranges and melee units whose front adds nothing stay facing the gates), so
 //      ranged units turn toward the enemy path tiles they cover best and blockers toward the road; on 气流 tiles
@@ -949,8 +951,9 @@ export function* planLayoutSteps(m, ps, pieces, params = LAYOUT_PARAMS, { occupi
     let bestV = -Infinity;
     // a "只能部署在召唤者攻击范围内" summon (伺夜's 狼群, 缪尔赛思's 流形): only the tiles of its owner's range
     const within = p.kind === 'token' && typeof ps.summonRange === 'function' ? ps.summonRange(p) : null;
-    // ground tiles for a MELEE blocker. placeClass 'all' is only elite 歌蕾蒂娅 + HOK-Y: she may stand on a 高台,
-    // and when one of those tiles covers the enemy road she is planned there (owner 2026-10-04: the bot uses the 高台).
+    // ground tiles for a MELEE blocker. placeClass 'all' on a MELEE record is a chess whose trait reads 「可以放置于远程位」
+    // (歌蕾蒂娅, 崖心, 见行者, any module): it may stand on a 高台, and when one of those tiles covers the enemy road it is
+    // planned there even with the ground free (owner 2026-10-04: the bot uses the 高台; 2026-10-05: every such chess).
     const cls = p.kind === 'token' ? basePositionClass(r0) : placeClass(ps, m.gd.chess(p.id) || r0);
     const preferHigh = cls === 'all' && basePositionClass(r0) === 'melee';
     let bestHigh = null;