feedback7 R22-LOADOUT: 圣约送葬人's REA-Y shows the trait's heal as 50 per enemy hit, as the battle heals (GitHub #400); golden: unchanged

#400 by @PCL1234: 干员调配 (and every card that shows the elite with REA-Y — 局内数值, the shop / detail card) read
「每攻击到一个敌人回复自身12生命」; the battle heals 50. Cause: official battle_equip_table uniequip_003_excu2 has a
DISPLAY part (display only) whose blackboard `value` 12 fills its own added line 「攻击范围内存在2名及以上敌人时攻击速度
+{value}」; tools/build-data.mjs applyModuleTraitParts merged that blackboard into the trait's before writing the class
trait 「…回复自身{value}生命…」, so the trait line took 12 (not potential, not the module level: the text template).
The sim already healed 50 (the kit reads traitBase for REA-Y). Now the trait line is written with the blackboards of
the parts that carry trait data (TRAIT / TRAIT_DATA_ONLY / OVERWRITE_BATTLE_DATA) or rewrite the line; a DISPLAY part
that only adds a line fills that line. `trait.bb` (what the kits read) is unchanged, as are tokens' traits.

- Data: chess.json — exactly chess_char_5_01_b REA-Y traitOverride desc / descRaw (12 → 50); backups / tokens and
  every other file identical. data/i18n rebuilt offline (en / ja / ko / zh-TW): only that text and the record hash.
- Docs: DATA.md `trait` row.
- Tests: test/data.test.js (REA-Y's line = the class trait's, its added line +12, REA-X 60; no module line anywhere
  differs from its class trait only in its own added line's numbers — fails on the old data); test/content/
  kits_alt_t5.test.js (the reaper heal 50 with REA-Y / none, 60 with REA-X); test/ui/loadout-rows.test.js (the
  干员调配 module card: 特性 50, 特性追加 +12). GOLDEN_FULL: unchanged.

test/data.test.js

@@ -729,6 +729,32 @@ test('official spot checks (hard-coded values from the zh_CN client data)', () =
   assert.equal(config.modes.mode_multi_abyss.enemyScale['6'].hp, 2.239488);   // 1.2^4 × 1.08
 });
 
+test('a module trait part that only adds a display line writes that line only (GitHub #400): 圣约送葬人 REA-Y heals 50 per enemy hit, its line ASPD +12', () => {
+  // official battle_equip_table uniequip_003_excu2: a DISPLAY part whose blackboard `value` 12 belongs to its own
+  // 「攻击速度+{value}」; the class trait's 「回复自身{value}生命」 stays the base 50 (REA-X's TRAIT_DATA_ONLY part rewrites it: 60)
+  const g = chess.chess_char_5_01_b;
+  const y = g.modules.find((m) => m.uniEquipId === 'uniequip_003_excu2').traitOverride;
+  assert.equal(y.desc, g.traitBase.desc, 'the class trait as without a module');
+  assert.match(y.desc, /每攻击到一个敌人回复自身50生命/);
+  assert.match(y.descRaw, /回复自身<@ba\.kw>50<\/>生命/);
+  assert.equal(y.moduleDesc, '攻击范围内存在2名及以上敌人时攻击速度+12');
+  assert.match(g.modules.find((m) => m.uniEquipId === 'uniequip_002_excu2').traitOverride.desc, /回复自身60生命/, 'REA-X');
+  // no other module record carries a trait line that differs from its owner's class trait only in a number its own
+  // display line uses (the class of this bug)
+  const forms = [...Object.values(chess), ...Object.values(D.backups.units || {}).flatMap((u) => Object.values(u.forms || {}))];
+  for (const f of forms) {
+    for (const m of f.modules || []) {
+      const o = m.traitOverride;
+      if (!o?.moduleDesc || !f.traitBase?.desc || o.desc === f.traitBase.desc) continue;
+      const nums = (t) => String(t).match(/\d+(?:\.\d+)?/g) || [];
+      const sameWords = o.desc.replace(/\d+(?:\.\d+)?/g, '#') === f.traitBase.desc.replace(/\d+(?:\.\d+)?/g, '#');
+      if (!sameWords) continue;
+      const moved = nums(o.desc).filter((n, i) => n !== nums(f.traitBase.desc)[i]);
+      assert.ok(!moved.every((n) => nums(o.moduleDesc).includes(n)), `${f.chessId || f.charId} ${m.uniEquipId}: ${o.desc} / ${o.moduleDesc}`);
+    }
+  }
+});
+
 /** Read an official cache file (only called when HAS_CACHE). */
 const raw = (rel) => JSON.parse(readFileSync(join(CACHE, rel), 'utf8'));