feat: personal run replays (ghost system)

- GhostData: worldName field, format v4; GhostManager stores last N runs per player (ghosts/<uuid>/<ts>.ghost)
- GhostService: per-player recording (start on run start, every tick, finalize on fall), gated by ghost-mode.enabled + per-player toggle
- PlayerGhost: packet-based fake-player NPC with viewer skin (NMS via remapNms gradle task, reflection send, graceful degradation)
- GhostReplay: teleport viewer to run start, replay frames via PlayerGhost, restore on finish
- /lp replay [index] command + tab completion; settings menu ghost_recording toggle (persisted disk/SQL)
- config: ghost-mode.{enabled,max-runs}, remove dead show-top/transparency + GHOST_* statics
- tests: GhostData v4 round-trip, GhostManager eviction/ordering, yawToFixed (79 total)

src/main/java/dev/loki/loparkour/LoParkour.java

@@ -2,6 +2,7 @@ package dev.loki.loparkour;
 
 import dev.loki.loparkour.bootstrap.PluginBootstrap;
 import dev.loki.loparkour.config.core.Config;
+import dev.loki.loparkour.ghost.service.GhostService;
 import dev.loki.loparkour.hook.papi.PAPIHook;
 import dev.loki.loparkour.mode.base.Modes;
 import dev.loki.loparkour.player.core.ParkourUser;
@@ -37,6 +38,7 @@ public final class LoParkour extends LoPlugin {
 
     private static LoParkour instance;
     private static SchematicManager schematicManager;
+    private static GhostService ghostService;
 
     @Nullable
     private static PAPIHook placeholderHook;
@@ -68,10 +70,18 @@ public final class LoParkour extends LoPlugin {
         return schematicManager;
     }
 
+    public static GhostService getGhostService() {
+        return ghostService;
+    }
+
     public void setSchematicManager(@NotNull SchematicManager manager) {
         schematicManager = manager;
     }
 
+    public void setGhostService(@NotNull GhostService service) {
+        ghostService = service;
+    }
+
     public void setPlaceholderHook(@Nullable PAPIHook hook) {
         placeholderHook = hook;
     }
@@ -110,6 +120,9 @@ public final class LoParkour extends LoPlugin {
 
             Rewards.clear();
             dev.loki.loparkour.adaptive.bootstrap.AdaptiveServices.shutdown();
+            if (ghostService != null) {
+                ghostService.shutdown();
+            }
             Storage.close();
             World.delete();
         } catch (Throwable t) {