fix: correct community-reported combat and strategy draft behavior

Guard lethal stuns against a replacement deployment; keep bard auras running
through stun; require an active Aegir bond for Clementia's strategy; allow
Compass SP to bypass recovery locks; and refresh Hidden Core gun mitigation
against current gun/spring companions. Set multiplayer strategy picks to 50s
and describe renderer fallback without diagnosing unsupported hardware.

Golden moves (full 285-scenario regeneration):
- roster-008: inactive Aegir no longer gains 18 strategy layers.
- boss-boss_4-solo: bard regeneration continues through stun.
- hidden-boss_9-pair: mitigation covers first hits/current companions.
- standin-07: hammer stun cannot follow an immediate revival deployment.
No ending-reason changes. Sources and report-by-report findings: DESIGN 28.25.

server/sim/skills.js

@@ -322,11 +322,12 @@ export class SkillRuntime {
   }
 
   /** Add SP (fires the `spGain` hook). Ignored while a duration/ammo/toggle skill runs (its bar shows the skill). */
-  gainSp(amount, reason = 'time', silent = false) {
+  // ignoreLock is reserved for explicitly documented exceptions (黄沙罗盘), not ordinary SP gifts.
+  gainSp(amount, reason = 'time', silent = false, { ignoreLock = false } = {}) {
     if (this.noSkill || this.kind === 'passive' || !(amount > 0)) return 0;
-    if (this.active && this.isTimed && reason !== 'init') return 0;
+    if (this.active && this.isTimed && reason !== 'init' && !ignoreLock) return 0;
     // 阻回 (the operators' 凋亡 burst, damage.js): "停止并阻止任意形式的技力回复" — no SP of any kind (time, attack, hurt, gifts)
-    if (reason !== 'init' && this.unit.s.flags.noSp) return 0;
+    if (reason !== 'init' && !ignoreLock && this.unit.s.flags.noSp) return 0;
     let cost = this.spCost;
     if (this.charges >= this.maxCharges && this.sp >= cost) return 0;
     let amt = amount;