feat(events): record acknowledged character book views

src/main/java/games/dmg/fantasystick/FantasyStickPlugin.java

@@ -166,6 +166,7 @@ public final class FantasyStickPlugin extends JavaPlugin {
     private games.dmg.fantasystick.events.EventCaptureListener eventCapture;
     private games.dmg.fantasystick.events.DownedEventBridge downedEvents;
     private games.dmg.fantasystick.events.RareEventBridge rareEvents;
+    private games.dmg.fantasystick.events.BookEventBridge bookEvents;
     private java.util.concurrent.CompletionStage<Void> configurationDrain = java.util.concurrent.CompletableFuture.completedStage(null);
 
     @Override public void onEnable() {
@@ -703,13 +704,14 @@ public final class FantasyStickPlugin extends JavaPlugin {
                 eventCapture = new games.dmg.fantasystick.events.EventCaptureListener(eventLog, sessions, Clock.systemUTC());
                 downedEvents = new games.dmg.fantasystick.events.DownedEventBridge(eventLog::emit, Clock.systemUTC());
                 rareEvents = new games.dmg.fantasystick.events.RareEventBridge(eventLog::emit, Clock.systemUTC());rareShop.attachEvents(rareEvents);
+                bookEvents = new games.dmg.fantasystick.events.BookEventBridge(eventLog::emit, Clock.systemUTC());books.attachEvents(bookEvents);
                 sessions.attachDownedEvents(downedEvents);
                 downedController.attachEvents(downedEvents);
                 revive.attachDownedEvents(downedEvents);
                 admin.attachDownedEvents(downedEvents);
                 getServer().getPluginManager().registerEvents(eventCapture, this);
             } catch (java.io.IOException failure) {
-                eventLog = null; eventCapture = null; downedEvents = null; rareEvents = null;
+                eventLog = null; eventCapture = null; downedEvents = null; rareEvents = null; bookEvents = null;
                 getLogger().log(Level.WARNING,"Fantasy Stick local events are unavailable; gameplay remains enabled",failure);
             }
             getServer().getPluginManager().registerEvents(crafting, this);
@@ -812,7 +814,7 @@ public final class FantasyStickPlugin extends JavaPlugin {
         combatFeedback = null;
         var closingEvents = sessionEvents; sessionEvents = null;
         var closingEventLog = eventLog; eventLog = null;
-        var closingEventCapture = eventCapture; eventCapture = null; downedEvents = null; rareEvents = null;
+        var closingEventCapture = eventCapture; eventCapture = null; downedEvents = null; rareEvents = null; bookEvents = null;
         var closingBooks = books; books = null;
         var closingPartyEvents = partyEvents; partyEvents = null;
         var closingPartyCombat = partyCombat; partyCombat = null;

src/main/java/games/dmg/fantasystick/book/CharacterBookController.java

@@ -36,6 +36,8 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
     private games.dmg.fantasystick.shop.RareMagicCoreService rareMagicCores;
     private final org.bukkit.Server server;
     private final Map<UUID, Object> pending = new ConcurrentHashMap<>();
+    private final Map<UUID, games.dmg.fantasystick.events.BookEventBridge.Request> pendingBookEvents = new ConcurrentHashMap<>();
+    private games.dmg.fantasystick.events.BookEventBridge bookEvents;
     private final Map<UUID, Object> adminPending = new ConcurrentHashMap<>();
     private final Map<UUID, AdminView> adminViews = new ConcurrentHashMap<>();
     private final Map<UUID, SavedView> savedViews = new ConcurrentHashMap<>();
@@ -117,7 +119,9 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
     public void attachFishingInventory(games.dmg.fantasystick.adventure.FishingDirectory fishing){if(closed||this.fishing!=null)throw new IllegalStateException("Fishing inventory already attached or books closed");this.fishing=Objects.requireNonNull(fishing);}
     public void attachRareInventory(games.dmg.fantasystick.shop.RareInventoryDirectory inventory,games.dmg.fantasystick.shop.RarePotionService potions,games.dmg.fantasystick.shop.RareReskillService reskills,games.dmg.fantasystick.shop.RareMagicCoreService magicCores){if(closed||rareInventory!=null)throw new IllegalStateException("Rare inventory already attached or books closed");rareInventory=Objects.requireNonNull(inventory);rarePotions=Objects.requireNonNull(potions);rareReskills=Objects.requireNonNull(reskills);rareMagicCores=Objects.requireNonNull(magicCores);}
 
-    @Override public void accept(ControlInput input) { load(input, 0); }
+    public void attachEvents(games.dmg.fantasystick.events.BookEventBridge events){if(closed||bookEvents!=null)throw new IllegalStateException("Book events already attached or controller closed");bookEvents=Objects.requireNonNull(events);}
+
+    @Override public void accept(ControlInput input) { load(input, 0, true); }
 
     public void openReadOnly(org.bukkit.entity.Player administrator, org.bukkit.entity.Player target) {
         Objects.requireNonNull(administrator); Objects.requireNonNull(target);
@@ -233,7 +237,7 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
         });
     }
 
-    private void load(ControlInput input, int offset) {
+    private void load(ControlInput input, int offset, boolean userRequested) {
         if (closed || input.kind() != ControlInput.Kind.BOOK || input.gesture() != ControlInput.Gesture.USE
                 || !input.stillCurrent()) return;
         var owner = input.session().player();
@@ -244,32 +248,45 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
         passiveViews.remove(owner);
         rareViews.remove(owner);
         reskillViews.remove(owner);
+        var current=sessions.currentRecord(input.session()).orElse(null);
+        var audit=userRequested&&bookEvents!=null&&current!=null?bookEvents.request(input,current,offset):null;
+        var superseded=pendingBookEvents.remove(owner);if(superseded!=null)bookEvents.refused(superseded,"superseded");
+        if(audit!=null)pendingBookEvents.put(owner,audit);
         Object ticket = new Object();
         pending.put(owner, ticket);
         characters.find(input.session().character()).whenComplete((record, failure) -> {
             if (closed || pending.get(owner) != ticket) return;
             try {
                 nextTick.accept(() -> {
-                    if (closed || !pending.remove(owner, ticket) || !input.stillCurrent()) return;
+                    if (closed || !pending.remove(owner, ticket)) return;
+                    if (!input.stillCurrent()) { finishRefused(owner,audit,"stale_session"); return; }
                     if (failure != null) {
+                        finishFailed(owner,audit,"load_failed");
                         report(input, failure);
                         input.player().sendMessage("Character book could not be loaded; no character state was changed.");
                         return;
                     }
                     if (record.isEmpty() || record.orElseThrow().dead()) {
+                        finishRefused(owner,audit,"character_unavailable");
                         input.player().sendMessage("This character is no longer available.");
                         return;
                     }
-                    try { input.player().openBook(render(record.orElseThrow(), input, offset)); }
-                    catch (RuntimeException error) { partyControls.forget(owner); views.remove(owner); report(input, error); }
+                    try {
+                        var book=render(record.orElseThrow(), input, offset);input.player().openBook(book);
+                        if(audit!=null&&pendingBookEvents.remove(owner,audit)){var pages=((BookMeta)book.getItemMeta()).pages().size();bookEvents.opened(audit,record.orElseThrow(),pages,1);}
+                    }
+                    catch (RuntimeException error) { finishFailed(owner,audit,"native_open_failed");partyControls.forget(owner); views.remove(owner); report(input, error); }
                 });
             } catch (RuntimeException rejected) {
-                pending.remove(owner, ticket);
+                pending.remove(owner, ticket);finishFailed(owner,audit,"scheduler_rejected");
                 report(input, rejected);
             }
         });
     }
 
+    private void finishRefused(UUID owner,games.dmg.fantasystick.events.BookEventBridge.Request request,String reason){if(request!=null&&pendingBookEvents.remove(owner,request))bookEvents.refused(request,reason);}
+    private void finishFailed(UUID owner,games.dmg.fantasystick.events.BookEventBridge.Request request,String reason){if(request!=null&&pendingBookEvents.remove(owner,request))bookEvents.failed(request,reason);}
+
     private ItemStack render(CharacterRecord record, ControlInput input, int offset) {
         return renderBook(record, input.player(), input, offset, null, null, false);
     }
@@ -743,15 +760,20 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
                 || !(event.getCommonConnection() instanceof io.papermc.paper.connection.PlayerGameConnection connection)) return;
         var player = connection.getPlayer();
         var view = views.get(player.getUniqueId());
-        if (view == null || view.input().player() != player || event.getTag() == null) return;
+        if (view == null) { refusePage(player,"missing_or_used_view"); return; }
+        if (view.input().player() != player || event.getTag() == null) { refusePage(player,"foreign_or_missing_payload"); return; }
         String raw = event.getTag().string();
-        if (raw.length() > 64) return;
+        if (raw.length() > 64) { refusePage(player,"invalid_payload"); return; }
         var match = PAGE_PAYLOAD.matcher(raw);
-        if (!match.matches() || !view.nonce().equals(match.group(1))) return;
+        if (!match.matches() || !view.nonce().equals(match.group(1))) { refusePage(player,"stale_or_forged_payload"); return; }
         int offset = match.group(2).equals("0") ? view.previous() : view.next();
-        if (offset < 0 || !views.remove(player.getUniqueId(), view) || !view.input().stillCurrent()) return;
+        if (offset < 0 || !views.remove(player.getUniqueId(), view) || !view.input().stillCurrent()) { refusePage(player,"stale_or_unavailable_page"); return; }
         // Reread authoritative data, rather than retaining a stale giant character snapshot.
-        load(view.input(), offset);
+        load(view.input(), offset, true);
+    }
+
+    private void refusePage(org.bukkit.entity.Player player,String reason){
+        if(bookEvents==null)return;var active=sessions.active(player.getUniqueId()).filter(sessions::current).orElse(null);if(active==null)return;var current=sessions.currentRecord(active).orElse(null);if(current!=null)bookEvents.refused(player,active,current,"character_book_navigate",reason);
     }
 
     private void report(ControlInput input, Throwable failure) {
@@ -807,7 +829,7 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
                 return;
             }
             input.player().sendMessage(stat + " increased to " + saved.stats().get(stat) + ".");
-            load(input, 0);
+            load(input, 0, false);
             return;
         }
         String message = switch (purchase.status()) {
@@ -817,7 +839,7 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
             case APPLIED -> throw new IllegalStateException("Handled applied purchase");
         };
         input.player().sendMessage(message);
-        load(input, 0);
+        load(input, 0, false);
     }
 
     @org.bukkit.event.EventHandler
@@ -846,7 +868,7 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
                 return;
             }
             player.sendMessage(abilityMessage(unlock, ability, mutation.status()));
-            load(view.input(), 0);
+            load(view.input(), 0, false);
         });
     }
 
@@ -874,7 +896,7 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
                 return;
             }
             player.sendMessage(passiveMessage(unlock, passive, mutation.status()));
-            load(view.input(), 0);
+            load(view.input(), 0, false);
         });
     }
 
@@ -912,12 +934,12 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
     }
 
     @org.bukkit.event.EventHandler
-    public void rareAction(io.papermc.paper.event.player.PlayerCustomClickEvent event){if(closed||rarePotions==null||rareReskills==null||rareMagicCores==null||!RARE_USE.equals(event.getIdentifier())||!(event.getCommonConnection() instanceof io.papermc.paper.connection.PlayerGameConnection connection)||event.getTag()==null)return;var player=connection.getPlayer();var view=rareViews.get(player.getUniqueId());if(view==null||view.input().player()!=player)return;String raw=event.getTag().string();if(raw.length()>120)return;var match=RARE_PAYLOAD.matcher(raw);var product=match.matches()?games.dmg.fantasystick.shop.RareProduct.find(match.group(2)).orElse(null):null;if(product==null||!view.nonce().equals(match.group(1))||!view.quantities().getOrDefault(product.id(),java.math.BigInteger.ZERO).equals(rareInventory.quantity(view.input().session().character(),product))||!rareViews.remove(player.getUniqueId(),view)||!view.input().stillCurrent())return;if(product==games.dmg.fantasystick.shop.RareProduct.RESKILL){var preview=rareReskills.preview(player);if(preview.isEmpty()){player.sendMessage("Reskill preview refused: the character, session or quantity changed.");return;}if(preview.orElseThrow().refund().signum()==0){player.sendMessage("Reskill use refused: this character has no investments to reset.");load(view.input(),0);return;}var confirmation=new ReskillView(UUID.randomUUID().toString(),view.input(),preview.orElseThrow());reskillViews.put(player.getUniqueId(),confirmation);player.openBook(reskillConfirmation(confirmation));return;}if(product==games.dmg.fantasystick.shop.RareProduct.MAGIC_CORE){rareMagicCores.use(player,outcome->{if(closed)return;player.sendMessage(switch(outcome.status()){case APPLIED->"Used Magic Core and gained 1 ordinary unspent point.";case NOT_AVAILABLE->"Magic Core use refused: that item is no longer available.";case STALE->"Magic Core use refused: the character, session, points or quantity changed.";case FAILED->"Magic Core could not be acknowledged; retained proof prevents replay.";});if(view.input().stillCurrent())load(view.input(),0);});return;}if(!product.heals())return;rarePotions.use(player,product,outcome->{if(closed||!view.input().stillCurrent())return;player.sendMessage(switch(outcome.status()){case APPLIED->"Used "+product.displayName()+" and restored "+outcome.healed().toPlainString()+" health.";case FULL_HEALTH->"Potion use refused: health is already full.";case NO_EFFECT->"Potion use refused: no positive healing was accepted.";case NOT_AVAILABLE->"Potion use refused: that item is no longer available.";case STALE->"Potion use refused: the character, session or quantity changed.";case FAILED->"Potion use could not be acknowledged; retained proof prevents replay.";});load(view.input(),0);});}
+    public void rareAction(io.papermc.paper.event.player.PlayerCustomClickEvent event){if(closed||rarePotions==null||rareReskills==null||rareMagicCores==null||!RARE_USE.equals(event.getIdentifier())||!(event.getCommonConnection() instanceof io.papermc.paper.connection.PlayerGameConnection connection)||event.getTag()==null)return;var player=connection.getPlayer();var view=rareViews.get(player.getUniqueId());if(view==null||view.input().player()!=player)return;String raw=event.getTag().string();if(raw.length()>120)return;var match=RARE_PAYLOAD.matcher(raw);var product=match.matches()?games.dmg.fantasystick.shop.RareProduct.find(match.group(2)).orElse(null):null;if(product==null||!view.nonce().equals(match.group(1))||!view.quantities().getOrDefault(product.id(),java.math.BigInteger.ZERO).equals(rareInventory.quantity(view.input().session().character(),product))||!rareViews.remove(player.getUniqueId(),view)||!view.input().stillCurrent())return;if(product==games.dmg.fantasystick.shop.RareProduct.RESKILL){var preview=rareReskills.preview(player);if(preview.isEmpty()){player.sendMessage("Reskill preview refused: the character, session or quantity changed.");return;}if(preview.orElseThrow().refund().signum()==0){player.sendMessage("Reskill use refused: this character has no investments to reset.");load(view.input(),0,false);return;}var confirmation=new ReskillView(UUID.randomUUID().toString(),view.input(),preview.orElseThrow());reskillViews.put(player.getUniqueId(),confirmation);player.openBook(reskillConfirmation(confirmation));return;}if(product==games.dmg.fantasystick.shop.RareProduct.MAGIC_CORE){rareMagicCores.use(player,outcome->{if(closed)return;player.sendMessage(switch(outcome.status()){case APPLIED->"Used Magic Core and gained 1 ordinary unspent point.";case NOT_AVAILABLE->"Magic Core use refused: that item is no longer available.";case STALE->"Magic Core use refused: the character, session, points or quantity changed.";case FAILED->"Magic Core could not be acknowledged; retained proof prevents replay.";});if(view.input().stillCurrent())load(view.input(),0,false);});return;}if(!product.heals())return;rarePotions.use(player,product,outcome->{if(closed||!view.input().stillCurrent())return;player.sendMessage(switch(outcome.status()){case APPLIED->"Used "+product.displayName()+" and restored "+outcome.healed().toPlainString()+" health.";case FULL_HEALTH->"Potion use refused: health is already full.";case NO_EFFECT->"Potion use refused: no positive healing was accepted.";case NOT_AVAILABLE->"Potion use refused: that item is no longer available.";case STALE->"Potion use refused: the character, session or quantity changed.";case FAILED->"Potion use could not be acknowledged; retained proof prevents replay.";});load(view.input(),0,false);});}
 
     private static ItemStack reskillConfirmation(ReskillView view){var item=new ItemStack(Material.WRITTEN_BOOK);var meta=(BookMeta)item.getItemMeta();meta.setTitle("Confirm Reskill");meta.setAuthor("Fantasy Stick");var page=Component.text("Confirm Reskill\n\nRefund: "+view.preview().refund()+" points\nStats → 0\nAbilities/passives removed\nHealth only clamps to the new maximum\nCooldowns retained\n\n").append(Component.text("[Confirm Reskill]",net.kyori.adventure.text.format.NamedTextColor.DARK_RED).clickEvent(net.kyori.adventure.text.event.ClickEvent.custom(RARE_RESKILL_CONFIRM,net.kyori.adventure.nbt.api.BinaryTagHolder.binaryTagHolder("\""+view.nonce()+"\""))));meta.pages(java.util.List.of(page));item.setItemMeta(meta);return item;}
 
     @org.bukkit.event.EventHandler
-    public void reskillConfirm(io.papermc.paper.event.player.PlayerCustomClickEvent event){if(closed||rareReskills==null||!RARE_RESKILL_CONFIRM.equals(event.getIdentifier())||!(event.getCommonConnection() instanceof io.papermc.paper.connection.PlayerGameConnection connection)||event.getTag()==null)return;var player=connection.getPlayer();var view=reskillViews.get(player.getUniqueId());String raw=event.getTag().string();if(view==null||view.input().player()!=player||raw.length()>80)return;var match=RARE_CONFIRM_PAYLOAD.matcher(raw);if(!match.matches()||!view.nonce().equals(match.group(1))||!reskillViews.remove(player.getUniqueId(),view)||!view.input().stillCurrent())return;rareReskills.confirm(player,view.preview(),outcome->{if(closed)return;player.sendMessage(switch(outcome.status()){case APPLIED->"Used Reskill; all purchased stats, abilities and passives were refunded.";case NOTHING_TO_RESET->"Reskill use refused: this character has no investments to reset.";case NOT_AVAILABLE->"Reskill use refused: that item is no longer available.";case STALE->"Reskill use refused: the character, session, build or quantity changed.";case FAILED->"Reskill could not be acknowledged; retained proof prevents replay.";});if(view.input().stillCurrent())load(view.input(),0);});}
+    public void reskillConfirm(io.papermc.paper.event.player.PlayerCustomClickEvent event){if(closed||rareReskills==null||!RARE_RESKILL_CONFIRM.equals(event.getIdentifier())||!(event.getCommonConnection() instanceof io.papermc.paper.connection.PlayerGameConnection connection)||event.getTag()==null)return;var player=connection.getPlayer();var view=reskillViews.get(player.getUniqueId());String raw=event.getTag().string();if(view==null||view.input().player()!=player||raw.length()>80)return;var match=RARE_CONFIRM_PAYLOAD.matcher(raw);if(!match.matches()||!view.nonce().equals(match.group(1))||!reskillViews.remove(player.getUniqueId(),view)||!view.input().stillCurrent())return;rareReskills.confirm(player,view.preview(),outcome->{if(closed)return;player.sendMessage(switch(outcome.status()){case APPLIED->"Used Reskill; all purchased stats, abilities and passives were refunded.";case NOTHING_TO_RESET->"Reskill use refused: this character has no investments to reset.";case NOT_AVAILABLE->"Reskill use refused: that item is no longer available.";case STALE->"Reskill use refused: the character, session, build or quantity changed.";case FAILED->"Reskill could not be acknowledged; retained proof prevents replay.";});if(view.input().stillCurrent())load(view.input(),0,false);});}
 
     @org.bukkit.event.EventHandler
     public void partyAction(io.papermc.paper.event.player.PlayerCustomClickEvent event) { partyControls.click(event); }
@@ -926,6 +948,7 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
     public void quit(org.bukkit.event.player.PlayerQuitEvent event) {
         var owner = event.getPlayer().getUniqueId();
         pending.remove(owner);
+        var bookRequest=pendingBookEvents.remove(owner);if(bookRequest!=null)bookEvents.refused(bookRequest,"player_quit");
         adminPending.remove(owner);
         adminViews.remove(owner);
         savedViews.remove(owner);
@@ -939,6 +962,6 @@ public final class CharacterBookController implements Consumer<ControlInput>, Au
     }
 
     @Override public void close() {
-        closed = true; pending.clear(); adminPending.clear(); adminViews.clear(); savedViews.clear(); views.clear(); statViews.clear(); abilityViews.clear(); passiveViews.clear(); rareViews.clear(); reskillViews.clear(); partyControls.close();
+        closed = true; pending.clear();pendingBookEvents.values().forEach(request->bookEvents.refused(request,"plugin_shutdown"));pendingBookEvents.clear(); adminPending.clear(); adminViews.clear(); savedViews.clear(); views.clear(); statViews.clear(); abilityViews.clear(); passiveViews.clear(); rareViews.clear(); reskillViews.clear(); partyControls.close();
     }
 }

src/main/java/games/dmg/fantasystick/events/BookEventBridge.java

@@ -0,0 +1,106 @@
+package games.dmg.fantasystick.events;
+
+import games.dmg.fantasystick.persistence.CharacterRecord;
+import games.dmg.fantasystick.session.ControlInput;
+import java.math.BigInteger;
+import java.nio.charset.StandardCharsets;
+import java.time.Clock;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Objects;
+import java.util.UUID;
+import java.util.function.Consumer;
+import org.bukkit.Location;
+
+/** Stable feature-owned character-book outcomes; event delivery never authorizes or rolls back an open. */
+public final class BookEventBridge {
+    public record Request(UUID actionId, EventInput.Context context, String actionKind, String viewKind,
+                          int offset, BigInteger requestedRevision) {
+        public Request {
+            Objects.requireNonNull(actionId); Objects.requireNonNull(context); Objects.requireNonNull(actionKind);
+            Objects.requireNonNull(viewKind); Objects.requireNonNull(requestedRevision);
+            if (offset < -1) throw new IllegalArgumentException("Invalid book offset");
+        }
+    }
+
+    private final Consumer<EventInput> sink;
+    private final Clock clock;
+
+    public BookEventBridge(Consumer<EventInput> sink, Clock clock) {
+        this.sink = Objects.requireNonNull(sink);
+        this.clock = Objects.requireNonNull(clock);
+    }
+
+    public Request request(ControlInput input, CharacterRecord current, int offset) {
+        Objects.requireNonNull(input); Objects.requireNonNull(current);
+        var request = new Request(UUID.randomUUID(), context(input, current.name()),
+            offset == 0 ? "character_book_open" : "character_book_navigate", "active", offset,
+            current.revision());
+        emit("action.observed", request, "observed", null, null, null, null);
+        return request;
+    }
+
+    public void refused(Request request, String reason) {
+        emit("action.resolved", request, "refused", reason, null, null, null);
+    }
+
+    public void refused(org.bukkit.entity.Player player, games.dmg.fantasystick.session.EquipmentSessions.Active active,
+                        CharacterRecord current, String actionKind, String reason) {
+        Objects.requireNonNull(player); Objects.requireNonNull(active); Objects.requireNonNull(current);
+        var request=new Request(UUID.randomUUID(),context(player,active,current.name()),actionKind,"active",-1,current.revision());
+        emit("action.observed",request,"observed",null,null,null,null);
+        refused(request,reason);
+    }
+
+    public void failed(Request request, String reason) {
+        emit("action.resolved", request, "failed", reason, null, null, null);
+    }
+
+    public void opened(Request request, CharacterRecord loaded, int presentedPages, int presentedVolumes) {
+        Objects.requireNonNull(loaded);
+        emit("action.resolved", request, "accepted", "acknowledged", loaded.revision(), presentedPages,
+            presentedVolumes);
+        emit(request.offset() == 0 ? "character_book.opened" : "character_book.navigated", request,
+            "accepted", "acknowledged", loaded.revision(), presentedPages, presentedVolumes);
+    }
+
+    private void emit(String type, Request request, String outcome, String reason, BigInteger loadedRevision,
+                      Integer pages, Integer volumes) {
+        var data = new LinkedHashMap<String, Object>();
+        data.put("action_kind", request.actionKind()); data.put("view_kind", request.viewKind());
+        data.put("section", "character_inspection"); data.put("control_kind", "book"); data.put("control_slot", "0");
+        data.put("offset", request.offset()<0?"unknown":Integer.toString(request.offset()));
+        data.put("requested_revision", request.requestedRevision().toString()); data.put("outcome", outcome);
+        if (reason != null) data.put(type.startsWith("character_book.") ? "native_open" : "reason", reason);
+        if (loadedRevision != null) data.put("loaded_revision", loadedRevision.toString());
+        if (pages != null) data.put("presented_pages", pages);
+        if (volumes != null) data.put("presented_volumes", volumes);
+        try {
+            sink.accept(new EventInput(id(request.actionId(), type), request.actionId(), clock.instant(), type,
+                request.context(), Map.copyOf(data)));
+        } catch (RuntimeException ignored) {
+            // Observability cannot change book authorization, rendering or native opening.
+        }
+    }
+
+    private EventInput.Context context(ControlInput input, String characterName) {
+        return context(input.player(),input.session(),characterName);
+    }
+
+    private EventInput.Context context(org.bukkit.entity.Player player,
+                                       games.dmg.fantasystick.session.EquipmentSessions.Active active,
+                                       String characterName) {
+        return new EventInput.Context(player.getUniqueId(), player.getName(), active.character(),
+            characterName, active.session(), location(player.getLocation()));
+    }
+
+    private EventInput.Location location(Location location) {
+        return new EventInput.Location(location.getWorld().getUID(), location.getWorld().getName(), location.getX(),
+            location.getY(), location.getZ(), clock.instant(), "exact");
+    }
+
+    private static UUID id(UUID action, String type) {
+        return UUID.nameUUIDFromBytes(("fantasystick:book:" + action + ":" + type)
+            .getBytes(StandardCharsets.UTF_8));
+    }
+}

src/nativeTest/java/games/dmg/fantasystick/AdminExperienceNativeTest.java

@@ -26,7 +26,7 @@ class AdminExperienceNativeTest {
             var viewer = new FantasyStickLifecycleNativeTest.Actor(data);
             viewer.core.inventory.setItemInOffHand(null); viewer.core.location.setWorld(target.world);
             f.players.put(viewer.core.id, viewer.player);
-            f.particlesCommand.execute(target.player, "fantasyparticles", new String[]{"all", "off"}); f.tick();
+            PartyBookNativeTest.disableAllParticles(f,target);
             target.particleCalls.clear(); viewer.particleCalls.clear();
             var sender = new EquipmentAdminCommandNativeTest.Sender();
             var before = storage.find(target.core.record.id()).get().orElseThrow();

src/nativeTest/java/games/dmg/fantasystick/ChainLightningNativeTest.java

@@ -51,7 +51,7 @@ class ChainLightningNativeTest {
             var viewer = new FantasyStickLifecycleNativeTest.Actor(data);
             viewer.core.inventory.setItemInOffHand(null); viewer.core.location.setWorld(caster.world);
             fixture.players.put(viewer.core.id, viewer.player);
-            fixture.particlesCommand.execute(caster.player, "fantasyparticles", new String[]{"all", "off"}); PartyBookNativeTest.drain(fixture);
+            PartyBookNativeTest.disableAllParticles(fixture,caster);
             caster.particleCalls.clear(); viewer.particleCalls.clear();
             var damage = new LinkedHashMap<UUID, Double>(); nativeDamage(fixture, first, damage); nativeDamage(fixture, second, damage);
             use(fixture, caster); drain(fixture, 2);

src/nativeTest/java/games/dmg/fantasystick/CharacterBookNativeTest.java

@@ -21,6 +21,16 @@ class CharacterBookNativeTest {
     @TempDir Path data;
     @BeforeAll static void bootstrap() throws Exception { NativeRuntime.bootstrap(); }
 
+    @Test void bookEventSinkFailureCannotChangeTheAlreadyAuthorizedNativeBookPath() {
+        var player=org.mockito.Mockito.mock(org.bukkit.entity.Player.class);var world=org.mockito.Mockito.mock(org.bukkit.World.class);var record=org.mockito.Mockito.mock(games.dmg.fantasystick.persistence.CharacterRecord.class);var playerId=UUID.randomUUID();var active=new games.dmg.fantasystick.session.EquipmentSessions.Active(playerId,UUID.randomUUID(),UUID.randomUUID());org.mockito.Mockito.when(player.getUniqueId()).thenReturn(playerId);org.mockito.Mockito.when(player.getName()).thenReturn("Player");org.mockito.Mockito.when(world.getUID()).thenReturn(UUID.randomUUID());org.mockito.Mockito.when(world.getName()).thenReturn("world");org.mockito.Mockito.when(player.getLocation()).thenReturn(new org.bukkit.Location(world,1,2,3));org.mockito.Mockito.when(record.name()).thenReturn("Hero");org.mockito.Mockito.when(record.revision()).thenReturn(java.math.BigInteger.ONE);var input=new games.dmg.fantasystick.session.ControlInput(player,active,0,"",games.dmg.fantasystick.session.ControlInput.Kind.BOOK,games.dmg.fantasystick.session.ControlInput.Gesture.USE,null,0,0,()->true);var bridge=new games.dmg.fantasystick.events.BookEventBridge(event->{throw new IllegalStateException("disk");},java.time.Clock.systemUTC());assertDoesNotThrow(()->{var request=bridge.request(input,record,0);bridge.opened(request,record,3,1);bridge.refused(request,"retry");});
+    }
+
+    @Test void registeredOpenReachesOneAcknowledgedFeatureEventAfterAuthoritativeReadAndNativeOpen() throws Exception {
+        try(var f=new FantasyStickLifecycleNativeTest.Fixture(data)){f.plugin.setEnabled(true);var a=new FantasyStickLifecycleNativeTest.Actor(data);f.players.put(a.core.id,a.player);f.activate(a);click(f,a);drainReads(f);runQueued(f);assertEquals(1,a.books.size());f.plugin.setEnabled(false);f.awaitWorkers();}
+        var events=new java.util.ArrayList<com.google.gson.JsonObject>();try(var files=Files.walk(data.resolve("events"))){for(var file:files.filter(path->path.getFileName().toString().endsWith(".jsonl")).toList())for(var line:Files.readAllLines(file))if(!line.isBlank())events.add(com.google.gson.JsonParser.parseString(line).getAsJsonObject());}
+        var opened=events.stream().filter(event->event.get("type").getAsString().endsWith("character_book.opened")).toList();assertEquals(1,opened.size());var data=opened.getFirst().getAsJsonObject("data");assertEquals("active",data.get("view_kind").getAsString());assertEquals("0",data.get("offset").getAsString());assertTrue(data.get("loaded_revision").getAsBigInteger().signum()>=0);assertTrue(data.get("presented_pages").getAsInt()>0);assertEquals(1,data.get("presented_volumes").getAsInt());assertEquals("acknowledged",data.get("native_open").getAsString());var action=data.get("action_id").getAsString();assertEquals(1,events.stream().filter(event->event.get("type").getAsString().endsWith("action.observed")&&event.getAsJsonObject("data").get("action_id").getAsString().equals(action)).count());assertEquals(1,events.stream().filter(event->event.get("type").getAsString().endsWith("action.resolved")&&event.getAsJsonObject("data").get("action_id").getAsString().equals(action)).count());
+    }
+
     @Test void queuedInspectionCannotOpenForAMovedSheetChangedSlotQuitOrDisabledLifetime() throws Exception {
         for (int route = 0; route < 4; route++) try (var f = new FantasyStickLifecycleNativeTest.Fixture(data.resolve("route-" + route))) {
             f.plugin.setEnabled(true);
@@ -52,6 +62,7 @@ class CharacterBookNativeTest {
             assertEquals(1, a.books.size());
             assertTrue(text(a.books.getFirst()).contains("Latest book name"));
         }
+        var events=new java.util.ArrayList<com.google.gson.JsonObject>();try(var files=Files.walk(data.resolve("events"))){for(var file:files.filter(path->path.getFileName().toString().endsWith(".jsonl")).toList())for(var line:Files.readAllLines(file))if(!line.isBlank())events.add(com.google.gson.JsonParser.parseString(line).getAsJsonObject());}assertEquals(1,events.stream().filter(event->event.get("type").getAsString().endsWith("character_book.opened")).count());assertEquals(1,events.stream().filter(event->event.get("type").getAsString().endsWith("action.resolved")&&event.getAsJsonObject("data").has("action_kind")&&event.getAsJsonObject("data").get("action_kind").getAsString().equals("character_book_open")&&event.getAsJsonObject("data").has("reason")&&event.getAsJsonObject("data").get("reason").getAsString().equals("superseded")).count());
     }
 
     @Test void cappedProgressAndSavedAbilitiesRenderWithoutCappingStatsOrRewritingProgress() throws Exception {
@@ -101,6 +112,7 @@ class CharacterBookNativeTest {
             assertEquals(saved, characters(f).find(a.core.record.id()).get(5, TimeUnit.SECONDS).orElseThrow(),
                 "A rendered purchase action is single-use");
         }
+        var events=new java.util.ArrayList<com.google.gson.JsonObject>();try(var files=Files.walk(data.resolve("events"))){for(var file:files.filter(path->path.getFileName().toString().endsWith(".jsonl")).toList())for(var line:Files.readAllLines(file))if(!line.isBlank())events.add(com.google.gson.JsonParser.parseString(line).getAsJsonObject());}assertEquals(1,events.stream().filter(event->event.get("type").getAsString().endsWith("character_book.opened")).count(),"The automatic post-purchase refresh must not duplicate a user-requested book-open outcome");
     }
 
     @Test void conPurchaseKeepsItsOwnMaximumAndOneTimeGainDespiteExternalModifiers() throws Exception {
@@ -210,6 +222,7 @@ class CharacterBookNativeTest {
     }
 
     @Test void largeRecordsRemainCompleteThroughBoundedSingleUseNavigation() throws Exception {
+        int expectedNavigations;
         try (var f = new FantasyStickLifecycleNativeTest.Fixture(data)) {
             f.plugin.setEnabled(true);
             var a = new FantasyStickLifecycleNativeTest.Actor(data);
@@ -247,13 +260,14 @@ class CharacterBookNativeTest {
                 drainReads(f); runQueued(f);
                 assertEquals(volumes + 1, a.books.size(), "One native action cannot open two volumes");
             }
-            assertTrue(volumes > 0); assertTrue(all.toString().contains(digits), "Every digit remains reachable in order");
+            assertTrue(volumes > 0);expectedNavigations=volumes; assertTrue(all.toString().contains(digits), "Every digit remains reachable in order");
             var previous = PartyBookNativeTest.button(a, "[Previous pages]");
             a.core.inventory.getInventory().setSelectedSlot(1);
             PartyBookNativeTest.click(f, a, previous); drainReads(f); runQueued(f);
             assertEquals(volumes + 1, a.books.size(), "Stale held-slot navigation has no authority");
             assertArrayEquals(bytes, Files.readAllBytes(data.resolve("characters").resolve(saved.id() + ".yml")));
         }
+        var events=new java.util.ArrayList<com.google.gson.JsonObject>();try(var files=Files.walk(data.resolve("events"))){for(var file:files.filter(path->path.getFileName().toString().endsWith(".jsonl")).toList())for(var line:Files.readAllLines(file))if(!line.isBlank())events.add(com.google.gson.JsonParser.parseString(line).getAsJsonObject());}assertEquals(expectedNavigations,events.stream().filter(event->event.get("type").getAsString().endsWith("character_book.navigated")).count());assertEquals(expectedNavigations,events.stream().filter(event->event.get("type").getAsString().endsWith("character_book.navigated")&&event.getAsJsonObject("data").get("native_open").getAsString().equals("acknowledged")&&event.getAsJsonObject("data").get("offset").getAsInt()>0).count());
     }
 
     @Test void acknowledgedRenameTransferAndReloadInspectTheCurrentRecordWithoutCarryingTheFormerHoldersView() throws Exception {

src/nativeTest/java/games/dmg/fantasystick/FantasyHealthNativeTest.java

@@ -110,7 +110,7 @@ class FantasyHealthNativeTest {
             viewer.core.inventory.setItemInOffHand(null); viewer.core.location.setWorld(defeated.world);
             f.players.put(defeated.core.id, defeated.player); f.players.put(viewer.core.id, viewer.player);
             f.activate(defeated);
-            f.particlesCommand.execute(defeated.player, "fantasyparticles", new String[]{"all", "off"}); f.tick();
+            PartyBookNativeTest.disableAllParticles(f,defeated);
             defeated.particleCalls.clear(); viewer.particleCalls.clear(); defeated.messages.clear();
             var source = new org.bukkit.craftbukkit.damage.CraftDamageSource(new net.minecraft.world.damagesource.DamageSource(
                 org.bukkit.craftbukkit.damage.CraftDamageType.bukkitToMinecraftHolder(org.bukkit.damage.DamageType.OUT_OF_WORLD)));

src/nativeTest/java/games/dmg/fantasystick/FantasyStickLifecycleNativeTest.java

@@ -610,7 +610,7 @@ class FantasyStickLifecycleNativeTest {
             f.plugin.setEnabled(true);
             var actor = new Actor(data); f.players.put(actor.core.id, actor.player);
             actor.core.inventory.setItem(4, new org.bukkit.inventory.ItemStack(org.bukkit.Material.SHULKER_BOX));
-            f.particlesCommand.execute(actor.player, "fantasyparticles", new String[]{"all", "off"}); f.tick();
+            PartyBookNativeTest.disableAllParticles(f,actor);
             actor.messages.clear(); actor.particles.clear(); actor.particleCalls.clear();
             var before = actor.core.snapshot(); f.changed(actor); f.tick(); f.tick();
             assertArrayEquals(before, actor.core.snapshot()); assertNull(actor.core.marker());

src/nativeTest/java/games/dmg/fantasystick/FireballNativeTest.java

@@ -52,7 +52,7 @@ class FireballNativeTest {
             var viewer = new FantasyStickLifecycleNativeTest.Actor(data);
             viewer.core.inventory.setItemInOffHand(null); viewer.core.location.setWorld(a.world);
             f.players.put(viewer.core.id, viewer.player);
-            f.particlesCommand.execute(a.player, "fantasyparticles", new String[]{"all", "off"}); PartyBookNativeTest.drain(f);
+            PartyBookNativeTest.disableAllParticles(f,a);
             a.particleCalls.clear(); viewer.particleCalls.clear();
             f.dispatcher.accept(cast); PartyBookNativeTest.drain(f); PartyBookNativeTest.drain(f);
             assertTrue(a.particleCalls.isEmpty(), "The opted-out caster receives no Fireball particles");

src/nativeTest/java/games/dmg/fantasystick/FrostNovaNativeTest.java

@@ -80,7 +80,7 @@ class FrostNovaNativeTest {
             var viewer = new FantasyStickLifecycleNativeTest.Actor(data);
             viewer.core.inventory.setItemInOffHand(null); viewer.core.location.setWorld(caster.world);
             fixture.players.put(viewer.core.id, viewer.player);
-            fixture.particlesCommand.execute(caster.player, "fantasyparticles", new String[]{"all", "off"}); PartyBookNativeTest.drain(fixture);
+            PartyBookNativeTest.disableAllParticles(fixture,caster);
             caster.particleCalls.clear(); viewer.particleCalls.clear();
             use(fixture, caster); drain(fixture, 2);
             assertTrue(caster.particleCalls.isEmpty(), "The opted-out caster receives no Frost Nova particles");

src/nativeTest/java/games/dmg/fantasystick/FrostShardNativeTest.java

@@ -55,7 +55,7 @@ class FrostShardNativeTest {
             var viewer = new FantasyStickLifecycleNativeTest.Actor(data);
             viewer.core.inventory.setItemInOffHand(null); viewer.core.location.setWorld(a.world);
             f.players.put(viewer.core.id, viewer.player);
-            f.particlesCommand.execute(a.player, "fantasyparticles", new String[]{"all", "off"}); PartyBookNativeTest.drain(f);
+            PartyBookNativeTest.disableAllParticles(f,a);
             a.particleCalls.clear(); viewer.particleCalls.clear();
             f.dispatcher.accept(cast); PartyBookNativeTest.drain(f); PartyBookNativeTest.drain(f);
             assertTrue(a.particleCalls.isEmpty(), "The opted-out caster receives no Frost Shard particles");

src/nativeTest/java/games/dmg/fantasystick/MeteorNativeTest.java

@@ -30,7 +30,7 @@ class MeteorNativeTest {
 
  @Test void characterBookPurchaseEquippedGroundWarningAndNativeImpact()throws Exception{
   try(var f=new FantasyStickLifecycleNativeTest.Fixture(data)){f.plugin.setEnabled(true);var caster=new FantasyStickLifecycleNativeTest.Actor(data);prepare(data,caster,false);f.players.put(caster.core.id,caster.player);f.activate(caster);var placement=placement(caster,24,BlockFace.UP);var enemy=mock(LivingEntity.class);locate(enemy,caster.world,new UUID(0,2),2,65,0);doReturn(List.of(enemy)).when(caster.world).getNearbyEntities(any(Location.class),anyDouble(),anyDouble(),anyDouble());var damaged=new ArrayList<Double>();doAnswer(call->{double amount=call.getArgument(0);damaged.add(amount);var source=(DamageSource)call.getArgument(1);f.dispatcher.accept(new EntityDamageByEntityEvent(caster.player,enemy,EntityDamageEvent.DamageCause.MAGIC,source,amount));return null;}).when(enemy).damage(anyDouble(),any(DamageSource.class));
-   caster.core.inventory.getInventory().setSelectedSlot(0);PartyBookNativeTest.open(f,caster);String text=PartyBookNativeTest.text(caster).replaceAll("\\s+","");assertTrue(text.contains("Meteor"));assertTrue(text.contains("INT26"));assertTrue(text.contains("WIS20"));assertTrue(text.contains("CON12"));assertTrue(text.contains("2-secondwarning"));PartyBookNativeTest.click(f,caster,button(caster,"[Learn]","meteor"));drain(f,2);var viewer=new FantasyStickLifecycleNativeTest.Actor(data);viewer.core.inventory.setItemInOffHand(null);viewer.core.location.setWorld(caster.world);f.players.put(viewer.core.id,viewer.player);f.particlesCommand.execute(caster.player,"fantasyparticles",new String[]{"all","off"});PartyBookNativeTest.drain(f);caster.particleCalls.clear();viewer.particleCalls.clear();use(f,caster);drain(f,2);assertTrue(damaged.isEmpty());assertEquals(1L,f.delayedTicks.getLast());for(int i=0;i<39;i++)f.delayed.removeFirst().run();assertTrue(damaged.isEmpty(),"The 40-tick warning must remain escapable");f.delayed.removeFirst().run();assertEquals(List.of(22d),damaged);assertTrue(caster.particleCalls.isEmpty(),"The opted-out caster receives no Meteor warning or impact particles");assertTrue(viewer.particleCalls.stream().filter(call->call[0]==Particle.DUST&&call[2].equals(24)).count()>=40);assertTrue(viewer.particleCalls.stream().anyMatch(call->call[0]==Particle.EXPLOSION_EMITTER&&call[2].equals(2)));assertTrue(viewer.particleCalls.stream().anyMatch(call->call[0]==Particle.FLAME&&call[2].equals(48)));verify(caster.world,atLeastOnce()).playSound(any(Location.class),eq(Sound.ENTITY_GENERIC_EXPLODE),eq(1f),eq(.7f));verify(placement,never()).setType(any(Material.class));assertNotNull(storage(f).find(caster.core.record.id()).get().orElseThrow().cooldowns().get("meteor"));assertEquals(BigInteger.ZERO,storage(f).find(caster.core.record.id()).get().orElseThrow().unspentPoints());
+   caster.core.inventory.getInventory().setSelectedSlot(0);PartyBookNativeTest.open(f,caster);String text=PartyBookNativeTest.text(caster).replaceAll("\\s+","");assertTrue(text.contains("Meteor"));assertTrue(text.contains("INT26"));assertTrue(text.contains("WIS20"));assertTrue(text.contains("CON12"));assertTrue(text.contains("2-secondwarning"));PartyBookNativeTest.click(f,caster,button(caster,"[Learn]","meteor"));drain(f,2);var viewer=new FantasyStickLifecycleNativeTest.Actor(data);viewer.core.inventory.setItemInOffHand(null);viewer.core.location.setWorld(caster.world);f.players.put(viewer.core.id,viewer.player);PartyBookNativeTest.disableAllParticles(f,caster);caster.particleCalls.clear();viewer.particleCalls.clear();use(f,caster);drain(f,2);assertTrue(damaged.isEmpty());assertEquals(1L,f.delayedTicks.getLast());for(int i=0;i<39;i++)f.delayed.removeFirst().run();assertTrue(damaged.isEmpty(),"The 40-tick warning must remain escapable");f.delayed.removeFirst().run();assertEquals(List.of(22d),damaged);assertTrue(caster.particleCalls.isEmpty(),"The opted-out caster receives no Meteor warning or impact particles");assertTrue(viewer.particleCalls.stream().filter(call->call[0]==Particle.DUST&&call[2].equals(24)).count()>=40);assertTrue(viewer.particleCalls.stream().anyMatch(call->call[0]==Particle.EXPLOSION_EMITTER&&call[2].equals(2)));assertTrue(viewer.particleCalls.stream().anyMatch(call->call[0]==Particle.FLAME&&call[2].equals(48)));verify(caster.world,atLeastOnce()).playSound(any(Location.class),eq(Sound.ENTITY_GENERIC_EXPLODE),eq(1f),eq(.7f));verify(placement,never()).setType(any(Material.class));assertNotNull(storage(f).find(caster.core.record.id()).get().orElseThrow().cooldowns().get("meteor"));assertEquals(BigInteger.ZERO,storage(f).find(caster.core.record.id()).get().orElseThrow().unspentPoints());
   }
  }
 

src/nativeTest/java/games/dmg/fantasystick/PartyBookNativeTest.java

@@ -50,6 +50,17 @@ class PartyBookNativeTest {
         Runnable task;
         while ((task = f.tasks.poll()) != null) task.run();
     }
+    static void disableAllParticles(FantasyStickLifecycleNativeTest.Fixture f,
+                                    FantasyStickLifecycleNativeTest.Actor actor) throws Exception {
+        int before=actor.messages.size();
+        f.particlesCommand.execute(actor.player,"fantasyparticles",new String[]{"all","off"});
+        for(int attempt=0;attempt<120;attempt++){
+            Runnable task=f.tasks.poll(25,java.util.concurrent.TimeUnit.MILLISECONDS);if(task!=null)task.run();
+            if(actor.messages.subList(Math.min(before,actor.messages.size()),actor.messages.size()).stream()
+                    .anyMatch(message->message.contains("All Fantasy Stick particles")&&message.contains("off")))return;
+        }
+        fail("Particle preference acknowledgement was not published");
+    }
     static net.minecraft.network.chat.ClickEvent.Custom button(FantasyStickLifecycleNativeTest.Actor a, String label) {
         var book = org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(a.books.getLast())
             .get(net.minecraft.core.component.DataComponents.WRITTEN_BOOK_CONTENT);

src/nativeTest/java/games/dmg/fantasystick/SanctuaryNativeTest.java

@@ -41,7 +41,7 @@ class SanctuaryNativeTest {
             String text=PartyBookNativeTest.text(caster).replaceAll("\\s+","");assertTrue(text.contains("Sanctuary"));assertTrue(text.contains("WIS24"));assertTrue(text.contains("CHR20"));assertTrue(text.contains("CON10"));
             PartyBookNativeTest.click(fixture,caster,button(caster,"[Learn]","sanctuary"));drain(fixture,2);
             var viewer=new FantasyStickLifecycleNativeTest.Actor(data);viewer.core.inventory.setItemInOffHand(null);viewer.core.location.setWorld(caster.world);fixture.players.put(viewer.core.id,viewer.player);
-            fixture.particlesCommand.execute(caster.player,"fantasyparticles",new String[]{"all","off"});PartyBookNativeTest.drain(fixture);caster.particleCalls.clear();viewer.particleCalls.clear();
+            PartyBookNativeTest.disableAllParticles(fixture,caster);caster.particleCalls.clear();viewer.particleCalls.clear();
             use(fixture,caster);drain(fixture,2);assertEquals(2L,fixture.delayedTicks.getLast());
             for(int i=0;i<10;i++)fixture.delayed.removeFirst().run();drain(fixture,4);assertEquals(6,ally.core.health,0);
             assertTrue(caster.particleCalls.isEmpty(),"The opted-out caster receives no Sanctuary particles");assertTrue(viewer.particleCalls.stream().anyMatch(call->call[0]==org.bukkit.Particle.END_ROD&&call[2].equals(12)),"An enabled nearby viewer retains Sanctuary visuals");

src/nativeTest/java/games/dmg/fantasystick/WarBannerNativeTest.java

@@ -35,7 +35,7 @@ class WarBannerNativeTest {
  @Test void bookAcquisitionSolidTopPlacementBenefitsPartyAndRewardsUsedDamage()throws Exception{
   try(var f=new FantasyStickLifecycleNativeTest.Fixture(data)){f.plugin.setEnabled(true);var caster=new FantasyStickLifecycleNativeTest.Actor(data);var ally=new FantasyStickLifecycleNativeTest.Actor(data);prepare(data,caster,false,false);f.players.put(caster.core.id,caster.player);f.players.put(ally.core.id,ally.player);f.activate(caster);f.activate(ally);party(f,caster,ally);placement(caster);nearby(caster,List.of(ally.player));var resistance=attribute(ally.player);resistance.modifiers().add(new AttributeModifier(new NamespacedKey("test","unrelated_knockback"),.2,AttributeModifier.Operation.ADD_NUMBER));
    caster.core.inventory.getInventory().setSelectedSlot(0);PartyBookNativeTest.open(f,caster);String text=PartyBookNativeTest.text(caster).replaceAll("\\s+","");assertTrue(text.contains("WarBanner"));assertTrue(text.contains("STR22"));assertTrue(text.contains("CHR22"));assertTrue(text.contains("CON12"));assertTrue(text.contains("25%"));assertTrue(text.contains("50%"));
-   PartyBookNativeTest.click(f,caster,button(caster,"[Learn]","war_banner"));drain(f,2);var viewer=new FantasyStickLifecycleNativeTest.Actor(data);viewer.core.inventory.setItemInOffHand(null);viewer.core.location.setWorld(caster.world);f.players.put(viewer.core.id,viewer.player);f.particlesCommand.execute(caster.player,"fantasyparticles",new String[]{"all","off"});PartyBookNativeTest.drain(f);caster.particleCalls.clear();viewer.particleCalls.clear();use(f,caster);drain(f,2);assertTrue(caster.particleCalls.isEmpty(),"The opted-out caster receives no War Banner particles");assertTrue(viewer.particleCalls.stream().anyMatch(call->call[0]==Particle.DUST&&call[2].equals(16)),"An enabled nearby viewer retains War Banner visuals");assertEquals(200L,f.delayedTicks.getLast());assertEquals(.7,resistance.value(),1e-9);assertNotNull(storage(f).find(caster.core.record.id()).get().orElseThrow().cooldowns().get("war_banner"));
+   PartyBookNativeTest.click(f,caster,button(caster,"[Learn]","war_banner"));drain(f,2);var viewer=new FantasyStickLifecycleNativeTest.Actor(data);viewer.core.inventory.setItemInOffHand(null);viewer.core.location.setWorld(caster.world);f.players.put(viewer.core.id,viewer.player);PartyBookNativeTest.disableAllParticles(f,caster);caster.particleCalls.clear();viewer.particleCalls.clear();use(f,caster);drain(f,2);assertTrue(caster.particleCalls.isEmpty(),"The opted-out caster receives no War Banner particles");assertTrue(viewer.particleCalls.stream().anyMatch(call->call[0]==Particle.DUST&&call[2].equals(16)),"An enabled nearby viewer retains War Banner visuals");assertEquals(200L,f.delayedTicks.getLast());assertEquals(.7,resistance.value(),1e-9);assertNotNull(storage(f).find(caster.core.record.id()).get().orElseThrow().cooldowns().get("war_banner"));
    var enemy=mock(LivingEntity.class);when(enemy.getUniqueId()).thenReturn(UUID.randomUUID());when(enemy.getType()).thenReturn(org.bukkit.entity.EntityType.ZOMBIE);when(enemy.getLocation()).thenReturn(new Location(caster.world,4,65,0));when(caster.world.getUID()).thenReturn(UUID.randomUUID());var source=DamageSource.builder(org.bukkit.damage.DamageType.PLAYER_ATTACK).withCausingEntity(ally.player).withDirectEntity(ally.player).build();var hit=new EntityDamageByEntityEvent(ally.player,enemy,EntityDamageEvent.DamageCause.ENTITY_ATTACK,source,10);f.dispatcher.accept(hit);assertEquals(12.5,hit.getDamage(),1e-9);f.dispatcher.accept(new EntityDeathEvent(enemy,source,new ArrayList<>(),0));drain(f,4);assertEquals(BigInteger.valueOf(5),storage(f).find(caster.core.record.id()).get().orElseThrow().experience());assertEquals(BigInteger.valueOf(5),storage(f).find(ally.core.record.id()).get().orElseThrow().experience());
    f.delayed.getLast().run();assertEquals(.2,resistance.value(),1e-9,"Owned cleanup preserves unrelated knockback modifiers");var expired=new EntityDamageByEntityEvent(ally.player,enemy,EntityDamageEvent.DamageCause.ENTITY_ATTACK,source,10);f.dispatcher.accept(expired);assertEquals(10,expired.getDamage(),1e-9);
   }