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/board.js

@@ -4,8 +4,8 @@
 // stage legend (data/stages.json `tiles[glyph]`: height + buildable) and the stage devices:
 //   'melee'  — LOW tile with buildable ALL/MELEE, or a 深水区 under an active 特制水上平台 (waterPlatform, "在水上建立可以
 //              部署任意单位的平台"): melee AND ranged chess may stand here ("所有行动内远程干员可部署在近战位").
-//   'ranged' — HIGH tile with buildable ALL/RANGED, or a tile under an active platform (射击台): ranged only (and elite
-//              歌蕾蒂娅 carrying HOK-Y, placeClass below).
+//   'ranged' — HIGH tile with buildable ALL/RANGED, or a tile under an active platform (射击台): ranged only (and the
+//              melee chess whose trait reads 「可以放置于远程位」, positionClass below).
 //   (absent) — not deployable (NONE, forbidden, road lanes, tiles under active crates/mounds, the 深水区 — the legend's
 //              `buildable` is the effective type: tile_deepsea refuses deployment, PRTS 深水区 地形信息
 //              "拒绝部署（待补充）", although its level buildableType is ALL; player report #3 after 0.1.0, 战场#08's
@@ -23,10 +23,10 @@
 // (10–12, 8), which are '#' on the normal field. The result equals stages[id].deployTiles.bossLeft / bossRight
 // mapped to board coordinates (test/match/playtest5-deploy.test.js).
 //
-// Chess follow their `position` (MELEE ⇒ melee tiles, RANGED ⇒ any deployable), except elite 歌蕾蒂娅 carrying module
-// HOK-Y 淡金坠饰 (uniequip_003_glady: `placeClass` / shared/highGround.js ⇒ any deployable tile). The branch trait
-// 「可以放置于远程位」 is not read (owner's decision 2026-10-04, reversing DESIGN §22.6): 崖心, 见行者, a normal record,
-// any other module and no module are ground-only. The equipped module is the player's loadout at place time.
+// Chess follow their `position` (MELEE ⇒ melee tiles, RANGED ⇒ any deployable), except a MELEE chess whose trait reads
+// 「可以放置于远程位」 — the 钩索师 / 推击手 branch trait: 歌蕾蒂娅, 崖心, 见行者, normal and elite, any module or none
+// (shared/highGround.js ⇒ any deployable tile; the owner's decision of 2026-10-05, following PRTS). The loadout does
+// not change the class.
 // Tokens follow their own `position` (ALL ⇒ any deployable tile, MELEE ⇒ melee tiles, RANGED ⇒ any deployable).
 // A token whose text reads "只能部署在召唤者攻击范围内" (tokens.json `ownerRange`: the tacticians' 援军 — 伺夜's 狼群,
 // 缪尔赛思's 流形; PRTS 狼群 特性) also needs a tile of its owner's attack range: `ownerRangeKeys` = the owner's range
@@ -135,37 +135,30 @@ export function buildDeployMap(stage, { deviceOverrides = {}, tileOverrides = {}
 }
 
 /**
- * Placement class of a chess / token record: 'melee' | 'ranged' | 'all'. Widened to 'all' only for elite 歌蕾蒂娅
- * carrying HOK-Y (`moduleId` = uniequip_003_glady, shared/highGround.js): she may stand on the ranged (高台) tiles.
- * Any other module, no module, and every other MELEE record stay 'melee'. `chess.json` has no `placement` field.
+ * Placement class of a chess / token record: 'melee' | 'ranged' | 'all'. A MELEE chess whose trait reads
+ * 「可以放置于远程位」 (shared/highGround.js: 歌蕾蒂娅, 崖心, 见行者, normal and elite) is widened to 'all': it may also
+ * stand on the ranged (高台) tiles. Every other MELEE record stays 'melee'. `chess.json` has no `placement` field.
  * @param {object|null} rec
- * @param {string|null} [moduleId] equipped module; ignored for tokens and non-golden records
  */
-export function positionClass(rec, moduleId = null) {
-  return meleeOnHighGround(rec, moduleId) ? 'all' : basePositionClass(rec);
+export function positionClass(rec) {
+  return meleeOnHighGround(rec) ? 'all' : basePositionClass(rec);
 }
 
 /**
- * Placement class of a record under a player's loadout (the module `ps.loadoutFor` resolves, defaults included).
- * Tokens and records without a chess id ignore the loadout.
- * @param {{ loadoutFor?: (rec: object) => { moduleId?: string|null }|null }|null} ps
+ * Placement class of a record on a player's board — the server's single entry point for pieces (g.move, swaps, merges,
+ * the audit, the invariants, the bot). Since the owner's decision of 2026-10-05 the player's loadout no longer changes
+ * it (any module, or none), so this is `positionClass(rec)`.
+ * @param {object|null} _ps the player (unused)
+ * @param {object|null} rec
  */
-export function placeClass(ps, rec) {
-  if (!rec || !rec.chessId || !ps || typeof ps.loadoutFor !== 'function') return positionClass(rec);
-  let moduleId = null;
-  try {
-    const lo = ps.loadoutFor(rec);
-    moduleId = lo && typeof lo.moduleId === 'string' ? lo.moduleId : null;
-  } catch {
-    moduleId = null;
-  }
-  return positionClass(rec, moduleId);
+export function placeClass(_ps, rec) {
+  return positionClass(rec);
 }
 
 /**
  * The record's own position class ('melee' | 'ranged' | 'all'), without the placement widening — the class the battle
- * plays (a MELEE operator still blocks on a ground tile; on a 高台 it blocks nothing): the bots' blocker test and the
- * tiles they plan for it (bot.js).
+ * plays (a MELEE operator still blocks on a ground tile; on a 高台 it blocks nothing): the bots' blocker test and their
+ * 高台 preference for a widened melee chess (bot.js isBlocker / planLayoutSteps).
  */
 export function basePositionClass(rec) {
   const p = rec && typeof rec.position === 'string' ? rec.position.toUpperCase() : 'ALL';