fix(hatch): follow block grip movement

src/scene/entity.rs

@@ -1026,6 +1026,61 @@ impl Scene {
         hatch_bg: [f32; 4],
         tint_selected: bool,
         frozen: Option<&rustc_hash::FxHashSet<Handle>>,
+    ) -> Vec<HatchModel> {
+        self.exploded_insert_hatch_models_filtered(
+            layout_block,
+            hatch_bg,
+            tint_selected,
+            frozen,
+            None,
+            false,
+        )
+    }
+
+    /// Build live hatch overlays for INSERT grip previews. The edited INSERT
+    /// is intentionally hidden from the resident scene while its current
+    /// document entity moves, so include that hidden target and reuse the full
+    /// block-expansion path for nested inserts, inherited styles and XCLIP.
+    pub(super) fn preview_insert_hatch_models(&self, handles: &[Handle]) -> Vec<HatchModel> {
+        let targets: rustc_hash::FxHashSet<Handle> = handles
+            .iter()
+            .copied()
+            .filter(|&handle| {
+                matches!(self.document.get_entity(handle), Some(EntityType::Insert(_)))
+            })
+            .collect();
+        if targets.is_empty() {
+            return Vec::new();
+        }
+        let hatch_bg = if self.current_layout != "Model" {
+            self.paper_bg_color
+        } else {
+            self.bg_color
+        };
+        let frozen: rustc_hash::FxHashSet<Handle> = self
+            .interaction_viewport_frozen_layers()
+            .into_iter()
+            .flatten()
+            .copied()
+            .collect();
+        self.exploded_insert_hatch_models_filtered(
+            self.interaction_block_handle(),
+            hatch_bg,
+            true,
+            (!frozen.is_empty()).then_some(&frozen),
+            Some(&targets),
+            true,
+        )
+    }
+
+    fn exploded_insert_hatch_models_filtered(
+        &self,
+        layout_block: Handle,
+        hatch_bg: [f32; 4],
+        tint_selected: bool,
+        frozen: Option<&rustc_hash::FxHashSet<Handle>>,
+        targets: Option<&rustc_hash::FxHashSet<Handle>>,
+        include_preview_hidden: bool,
     ) -> Vec<HatchModel> {
         let layer_hidden = |layer: &str| {
             self.document
@@ -1117,8 +1172,13 @@ impl Scene {
             let EntityType::Insert(ins) = contextual.as_ref() else {
                 continue;
             };
+            if targets.is_some_and(|targets| !targets.contains(&ins.common.handle)) {
+                continue;
+            }
+            let temporarily_hidden = self.object_isolation.hides(ins.common.handle)
+                || (!include_preview_hidden && self.preview_hidden.contains(&ins.common.handle));
             if ins.common.invisible
-                || self.entity_temporarily_hidden(ins.common.handle)
+                || temporarily_hidden
                 || layer_hidden(&ins.common.layer)
             {
                 continue;

src/scene/mod.rs

@@ -5104,14 +5104,19 @@ impl Scene {
                 let cache = self.hatch_cache.borrow();
                 match cache.get(&space) {
                     // Selection tint is baked in, so the selected set must also
-                    // match; category = a changed handle that is a hatch/solid fill.
+                    // match; category = a changed direct fill or an INSERT
+                    // whose expanded block tree can contain hatch fills.
                     Some((cached_epoch, cached_sel, arc))
                         if *cached_sel == sel_sig
                             && self.category_cache_valid(
                                 *cached_epoch,
-                                CACHE_CATEGORY_HATCH,
+                                CACHE_CATEGORY_HATCH | CACHE_CATEGORY_INSERT_HATCH,
                                 |h| {
-                                self.hatches.contains_key(&h)
+                                    self.hatches.contains_key(&h)
+                                        || matches!(
+                                            self.document.get_entity(h),
+                                            Some(EntityType::Insert(_))
+                                        )
                                 },
                             ) =>
                     {
@@ -5149,11 +5154,12 @@ impl Scene {
     fn selected_hatch_sig(&self) -> u64 {
         let mut sig = 0u64;
         let mut count = 0u64;
-        for h in self
-            .selected
-            .iter()
-            .filter(|handle| self.hatches.contains_key(handle))
-        {
+        for &h in &self.selected {
+            if !self.hatches.contains_key(&h)
+                && !matches!(self.document.get_entity(h), Some(EntityType::Insert(_)))
+            {
+                continue;
+            }
             count += 1;
             sig ^= h.value().wrapping_mul(0x9E37_79B9_7F4A_7C15);
         }

src/scene/preview.rs

@@ -18,8 +18,12 @@ impl Scene {
     pub fn set_preview_hatches(&mut self, handles: &[Handle]) {
         let mut models = Vec::new();
         for &handle in handles {
+            // Keep the existing direct Hatch/Solid preview path. INSERT has no
+            // entry in `self.hatches`, so this is a no-op for it and the full
+            // block expansion below supplies its fills.
             self.append_preview_hatch(handle, &mut models);
         }
+        models.extend(self.preview_insert_hatch_models(handles));
         self.preview_hatches = std::sync::Arc::new(models);
     }