fix(02-04): guard nullable static event sources

- Preserve dynamic event collection while narrowing static tile access
- Record the moverImpl type diagnostic as resolved

.planning/phases/02-pathfinding/deferred-items.md

@@ -21,3 +21,10 @@
   status: open
   **What:** 阶段门禁 `pnpm lint:user` 仍被本计划未修改的渲染与 legacy 文件阻塞；计划归属文件的
   ESLint 检查为 0 problems，按范围边界规则不修复无关基线问题。
+
+- data-state/src/hero/moverImpl.ts 的 TS18047 诊断（`loc.static` 可能为 `null`）
+  status: resolved
+  **What:** `commonTrigger` 的静态图块事件收集在可空 `ILayerLocation.static` 上直接调用
+  `tileEvent()`，导致计划归属文件的类型门禁失败。
+  **Resolution:** 仅在 `loc.static` 非空时收集静态图块事件；动态事件收集、优先级排序、来源环境
+  与单次 executor 调用保持不变。

packages-user/data-state/src/hero/moverImpl.ts

@@ -202,13 +202,15 @@ export class DefaultHeroMoveTopImpl implements IHeroMoveTopImpl {
             }
         }
         if (loc) {
-            for (const [priority, id] of loc.static.tileEvent().get()) {
-                tileSources.push({
-                    priority,
-                    id,
-                    type: BlockEventType.TileEvent,
-                    tile: loc.static
-                });
+            if (loc.static) {
+                for (const [priority, id] of loc.static.tileEvent().get()) {
+                    tileSources.push({
+                        priority,
+                        id,
+                        type: BlockEventType.TileEvent,
+                        tile: loc.static
+                    });
+                }
             }
             for (const tile of loc.dynamics) {
                 for (const [priority, id] of tile.tileEvent().get()) {

packages-user/data-state/src/path/heroPathfinding.ts

@@ -202,6 +202,10 @@ export class HeroPathfinding implements IHeroPathfinding {
         this.system.useMover(mover);
     }
 
+    useMovable(movable: IObjectMovable | null): void {
+        this.system.useMovable(movable);
+    }
+
     useFallbackPolicy(policy: PathFallbackPolicy | null): void {
         this.system.useFallbackPolicy(policy);
     }