feat: Add support IPC socket control over menu.

crates/pikl-test-macros/src/parse.rs

@@ -25,6 +25,7 @@ pub enum TestKind {
     Filter,
     Nav,
     Menu,
+    Ipc,
 }
 
 pub struct Fixtures {
@@ -58,6 +59,10 @@ pub enum ActionExpr {
     Raw(String),
     /// `add-items ["a", "b", "c"]`
     AddItems(Vec<String>),
+    /// `ipc-send "json line"` — send a JSON command over the IPC socket
+    IpcSend(String),
+    /// `ipc-expect "text"` — read a response line and assert it contains text
+    IpcExpect(String),
 }
 
 // ---------------------------------------------------------------------------
@@ -300,6 +305,14 @@ fn parse_action_expr(input: ParseStream) -> syn::Result<ActionExpr> {
             let items = parse_string_list(input)?;
             Ok(ActionExpr::AddItems(items))
         }
+        "ipc-send" => {
+            let val: LitStr = input.parse()?;
+            Ok(ActionExpr::IpcSend(val.value()))
+        }
+        "ipc-expect" => {
+            let val: LitStr = input.parse()?;
+            Ok(ActionExpr::IpcExpect(val.value()))
+        }
         _ => Ok(ActionExpr::Simple(name)),
     }
 }
@@ -317,9 +330,10 @@ fn parse_kind(input: ParseStream) -> syn::Result<TestKind> {
         "filter" => Ok(TestKind::Filter),
         "nav" => Ok(TestKind::Nav),
         "menu" => Ok(TestKind::Menu),
+        "ipc" => Ok(TestKind::Ipc),
         other => Err(syn::Error::new(
             ident.span(),
-            format!("unknown test kind '{other}', expected headless, filter, nav, or menu"),
+            format!("unknown test kind '{other}', expected headless, filter, nav, menu, or ipc"),
         )),
     }
 }