Prepare module hooks for parallel tool/effect work

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/engine/src/cmd/draw2.rs

@@ -0,0 +1,7 @@
+//! Commands backing the drawing tools (pencil, scissors, knife…).
+
+use super::CommandSpec;
+
+pub fn specs() -> Vec<CommandSpec> {
+    vec![]
+}

crates/engine/src/cmd/effectcmd.rs

@@ -0,0 +1,7 @@
+//! Effect menu commands (live effects).
+
+use super::CommandSpec;
+
+pub fn specs() -> Vec<CommandSpec> {
+    vec![]
+}

crates/engine/src/cmd/mod.rs

@@ -1,6 +1,9 @@
 //! The command registry. Ids follow Illustrator's menu structure.
 
 mod create;
+mod draw2;
+mod effectcmd;
+mod xform;
 mod edit;
 mod layer;
 mod object;
@@ -113,6 +116,9 @@ pub fn command_specs() -> &'static [CommandSpec] {
         v.extend(select::specs());
         v.extend(paint::specs());
         v.extend(layer::specs());
+        v.extend(draw2::specs());
+        v.extend(xform::specs());
+        v.extend(effectcmd::specs());
         v.extend(pathops::specs());
         v.extend(typecmd::specs());
         v

crates/engine/src/cmd/xform.rs

@@ -0,0 +1,7 @@
+//! Commands backing transform/utility tools (eyedropper, gradient, artboard…).
+
+use super::CommandSpec;
+
+pub fn specs() -> Vec<CommandSpec> {
+    vec![]
+}