feedback5 R19E: the 鸭爵 strategy's swapped-in 流泪小子 hides again 1 s after a block ends instead of the official 0 s — a deliberate deviation, the owner's decision of 2026-10-07 (「要不等待个1秒这样再重新隐匿」); a separate commit the integrator can drop; golden: 1 scenario moves (matches solo-HARD-2)

content/enemies/archetypes.js stealth: an enemy spawned with the band's swap tag 'duck' (content/bands/meta.js
duckReplace) gets its 隐匿 back no sooner than DUCK_STEALTH_RESTORE (1 s, content/enemies/helpers.js) after a block ends
— in practice 流泪小子 (enemy_2034_sythef_2), the only one of the four swaps with 隐匿, officially 0 s (PRTS 流泪小子
「隐匿（解除阻挡0秒后恢复）」). The same enemy anywhere else keeps 0 s: the bounty card's 流泪小子 (enemy_2034_sythef), an
untagged spawn; a 3 s 隐匿 stays 3 s; a copy leaked into 联防 keeps its tag and the 1 s. After each strike (its stunned
blocker lets go) it is now revealed through its 0.8 s post-strike stand and 0.2 s of walking.

Measured, 8 seeds each — leaked / HP left / revealed s per battle; W = 3 elite melee in a lane + an elite sniper vs the
R6 wave's ground enemies with one swapped 流泪小子, B = 8 elites on 战场#01 vs the whole R6 wave with one swap: before
the clip fix W 5/8, 42 %, 2.3 / B 8/8, 47 %, 3.2; after it W 5/8, 31 %, 2.6 / B 8/8, 58 %, 2.5; with the 1 s W 4/8,
31 %, 4.0 / B 8/8, 56 %, 5.5. Options for the owner (measured on the fixed engine, not built): 2 s W 4/8, 31 %, 5.4 /
B 8/8, 46 %, 8.5; 3 s (the general 隐匿 rule) W 4/8, 31 %, 6.4 / B 8/8, 39 %, 11.5; a 1.5 s stun on the copy (below its
2 s interval, so its blocker takes it over again) W 4/8, 2 %, 4.0 / B 4/8, 6 %, 5.5; a 1 s stun: knocked out in all 16;
the 1 s delay + a 2 s stun W 4/8, 21 %, 5.1 / B 5/8, 26 %, 8.1. Worse: half speed while 隐匿; a stunned operator that
keeps blocking it (pins that operator for good).

Golden: matches solo-HARD-2 — its bot holds 鸭爵; the swapped 流泪小子 of round 13 is free and revealed for 49 ticks in
its 1 s windows (the round-12 one is never released by a block), so the match parts at round 13 (a victory instead of
a defeat); the other 282 scenarios unchanged.

Tests: test/content/feedback5-duck-restealth.test.js (3; the swap's 1 s and the band path fail on the parent, the 0 s
guard passes on both); enemies_bosses, feedback2-surtr-stealth, feedback1-ducklord, feedback5-attack-clip-rest pass.
Docs: CHANGELOG 0.2.0 有意与官方不同的调整 (and the 核实后不是问题 line points to it), docs/history/0.2.0.md §25.22.6,
docs/PLAYING.md, docs/SIM.md, design/engine.md.

docs/history/0.2.0.md

@@ -2027,3 +2027,23 @@ here, each reproduced first; the rest were answered (not a bug, already fixed in
   the same round. The displacement rule alone moves one roster scenario.
 - Tests: `test/sim/feedback5-attack-clip-rest.test.js` (5; the four behaviour tests fail on 0255afd, the data pin passes
   on both). Docs: docs/SIM.md (enemy attacks), DESIGN §5 (design/engine.md), docs/DATA.md (`attackAnim`).
+- **Deliberate deviation — the owner's decision of 2026-10-07** (「鸭爵策略产生的泪眼汪汪我想了一下，要不等待个1秒这样再重新隐匿，
+  或者提供点别的降低难度的方案」): the 鸭爵 swap's copies (spawn tag `'duck'`, `content/bands/meta.js duckReplace` — in
+  practice 流泪小子, the only one of the four with 隐匿) get their 隐匿 back no sooner than 1 s after a block ends
+  (`content/enemies/helpers.js DUCK_STEALTH_RESTORE`, `archetypes.js stealth`; officially 0 s). The same enemy anywhere
+  else — the bounty card's 流泪小子 (`enemy_2034_sythef`), any other spawn — keeps 0 s; a copy leaked into 联防 keeps its
+  tag and the 1 s. After each strike it is now revealed through its 0.8 s stand and 0.2 s of walking.
+- Measured, 8 seeds each (W: 3 elite melee operators in a lane + an elite sniper against the R6 wave's ground enemies with
+  one swapped 流泪小子; B: 8 elite operators on 战场#01 against the whole R6 wave with one swap) — leaked, HP left, revealed
+  s per battle: before 0.2.0's fixes W 5/8, 42 %, 2.3 / B 8/8, 47 %, 3.2; after the clip fix W 5/8, 31 %, 2.6 / B 8/8,
+  58 %, 2.5; with the 1 s W 4/8, 31 %, 4.0 / B 8/8, 56 %, 5.5. Other options, measured on the fixed engine and not built:
+  2 s — W 4/8, 31 %, 5.4 / B 8/8, 46 %, 8.5; 3 s (the general 隐匿 rule of PRTS 作战机制) — W 4/8, 31 %, 6.4 / B 8/8,
+  39 %, 11.5; a 1.5 s stun on the copy (below its 2 s interval: its blocker recovers while it still stands in its block
+  radius and takes it over again) — W 4/8, 2 %, 4.0 / B 4/8, 6 %, 5.5; a 1 s stun — knocked out in all 16; the 1 s delay
+  with a 2 s stun — W 4/8, 21 %, 5.1 / B 5/8, 26 %, 8.1. Worse, not offered: half speed while 隐匿 (B 8/8, 76 % — it
+  stays hidden longer), a stunned operator that keeps blocking it (pins that operator for the whole battle).
+- Golden (this rule alone): matches solo-HARD-2 — its bot holds 鸭爵; the swapped 流泪小子 of round 13 is free and revealed
+  for 49 ticks in its 1 s windows (the round-12 one is never released by a block), so the match parts at round 13 and
+  ends in a victory instead of a defeat; the other 282 scenarios are unchanged. Tests:
+  `test/content/feedback5-duck-restealth.test.js` (3; the swap's 1 s and the band path fail before it, the 0 s guard
+  for the same enemy elsewhere passes on both).