fix: persist rollType/actorId on rollBase.options, re-evaluate canReroll after mulligan

- roll-prompt.mjs: explicitly save rollType, actorId, actorName, actorImage
  to rollBase.options so mulligan reroll context reads valid values
- chat-reaction.mjs: replace canRerollDefense/canRerollAttack = false with
  recomputation from updated D30 message — aligns same-client with
  cross-client behavior (new D30 always takes effect, mulligan chain loops)

module/hooks/chat-reaction.mjs

@@ -549,7 +549,6 @@ Hooks.on("createChatMessage", async (message) => {
         if (choice === "rerollDefense" && canRerollDefense) {
           const oldDefenseRoll = defenseRoll
           const reroll = await LethalFantasyUtils.rerollConfiguredRoll(defenseRerollContext)
-          canRerollDefense = false
           if (!reroll) continue
           defenseRoll = reroll.options?.rollTotal || reroll.total || oldDefenseRoll
           try {
@@ -566,12 +565,13 @@ Hooks.on("createChatMessage", async (message) => {
           } catch(e) {
             console.error("Mulligan message creation failed (non-fatal):", e)
           }
-          // Apply new D30 result on the restart
+          // Apply new D30 result on the restart — the new D30 always takes effect,
+          // and if it's another mulligan the reroll button reappears.
           if (reroll.options?.D30message) {
             defenseD30message = reroll.options.D30message
             defenseD30Processed = false
           }
-          // Restart the full comparison so both sides can react to the new roll
+          canRerollDefense = LethalFantasyUtils.hasD30Reroll(defenseD30message)
           mulliganRestart = true
           break
         }
@@ -755,7 +755,6 @@ Hooks.on("createChatMessage", async (message) => {
         if (choice === "rerollAttack" && canRerollAttack && attackRerollContext) {
           const oldAttackRoll = attackRollFinal
           const reroll = await LethalFantasyUtils.rerollConfiguredRoll(attackRerollContext)
-          canRerollAttack = false
           if (!reroll) continue
           attackRollFinal = reroll.options?.rollTotal || reroll.total || oldAttackRoll
           try {
@@ -772,14 +771,14 @@ Hooks.on("createChatMessage", async (message) => {
           } catch(e) {
             console.error("Mulligan message creation failed (non-fatal):", e)
           }
-          // Apply new D30 result on the restart
+          // Apply new D30 result on the restart — the new D30 always takes effect,
+          // and if it's another mulligan the reroll button reappears.
           if (reroll.options?.D30message) {
             attackD30message = reroll.options.D30message
             attackD30Processed = false
-            // Invalidate pre-computed effects — the new D30 message must be processed fresh
             d30AttackPrecomputedStale = true
           }
-          // Restart the full comparison so both sides can react to the new roll
+          canRerollAttack = LethalFantasyUtils.hasD30Reroll(attackD30message)
           mulliganRestart = true
           break
         }