Add attacker selection from enemies list

Allow selecting an attacker from the bestiary/enemies list to
automatically populate BS and WS values. This enables using player
characters (added as enemies) as attackers in combat rolls.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

src/components/DeathwatchRoller.jsx

@@ -334,6 +334,7 @@ function DeathwatchRoller() {
   const [enemiesLoading,setEnemiesLoading] = useState(false)
   const [enemiesError,setEnemiesError] = useState(null)
   const [enemyName,setEnemyName] = useState('Custom/None')
+  const [attackerName,setAttackerName] = useState('Custom/None')
 
   // Load enemies from database API
   async function loadEnemiesFromAPI() {
@@ -536,6 +537,29 @@ function DeathwatchRoller() {
     else setDefenderModifier(0)
   }
 
+  function onSelectAttacker(name) {
+    setAttackerName(name)
+    const e = enemies.find(x=>x.name===name)
+    if (!e || name === "Custom/None") return
+    // Extract WS/BS from enemy
+    function findNumeric(o, keys) {
+      if (!o || typeof o !== "object") return undefined
+      for (const k of keys) {
+        if (typeof o[k] === "number") return o[k]
+        const lower = k.toLowerCase()
+        for (const ok of Object.keys(o)) {
+          if (ok.toLowerCase() === lower && typeof o[ok] === "number") return o[ok]
+        }
+      }
+      return undefined
+    }
+    const char = e.characteristics || (e.tabInfo && e.tabInfo.characteristics) || {}
+    const wsVal = findNumeric(e, ["ws", "Ws", "WS"]) ?? findNumeric(char, ["ws"])
+    const bsVal = findNumeric(e, ["bs", "Bs", "BS"]) ?? findNumeric(char, ["bs"])
+    if (typeof wsVal === "number") setWS(wsVal)
+    if (typeof bsVal === "number") setBS(bsVal)
+  }
+
   function importFromJSONText(txt) {
     try {
       const arr = JSON.parse(txt)
@@ -1111,6 +1135,12 @@ function DeathwatchRoller() {
                   <Tooltip text="Toughness Bonus">TB</Tooltip> / <Tooltip text="Armour Rating">AR</Tooltip> / <Tooltip text="Wounds">W</Tooltip> • {enemies.length} enemies loaded
                 </div>
               </div>
+              <div>
+                <label className="text-xs uppercase opacity-70">Attacker (from enemies)</label>
+                <select className="w-full rounded-xl border border-slate-600 bg-slate-800 px-3 py-2" value={attackerName} onChange={e=>onSelectAttacker(e.target.value)}>
+                  {enemies.map(en => (<option key={"atk-"+en.name} value={en.name}>{en.name}{en.name==="Custom/None" ? "" : ` (WS ${en.ws??"-"} / BS ${en.bs??"-"})`}</option>))}
+                </select>
+              </div>
               <div>
                 <label className="text-xs uppercase opacity-70">
                   <Tooltip text="Ballistic Skill - Used for ranged attacks">Attacker's BS</Tooltip>