app: 'd' — define typed data in the listing (make_data, M3)

Press 'd' on a listing head to define typed data at that address via a prompt
(the ".data type definitions" backlog item). Mirrors the retype prompt flow:
MakeDataRequested -> #makedata Input (prefilled with a size-appropriate default
type: unsigned __int8/16/32/64 or char[N]) -> _do_make_data worker ->
Program.make_data -> bump_items -> reopen the listing in place. Accepts any C
type IDA's SetType understands: int, char[16], my_struct, T *arr[4], ...

Pilot: listing_view gains a deterministic sub-test — undefine a data head to
synthesize an unknown run, assert it renders as `unknown`, then 'd' char[4]
over it and assert it becomes a `data` head. 118 pass / 1 pre-existing flaky
(filter); rpc_smoke 29/0.

1 files changed, 11 insertions, 0 deletions

diff --git a/idatui/domain.py b/idatui/domain.py
index fd673ca..4f33211 100644
--- a/idatui/domain.py
+++ b/idatui/domain.py
@@ -1071,6 +1071,17 @@ class Program:
         if res.get("error"):
             raise IDAToolError(f"undefine @ {ea:#x}: {res['error']}")
 
+    def make_data(self, ea: int, type_decl: str, name: str | None = None) -> None:
+        """Create a typed data item at ``ea`` (IDA's 'd', but typed). ``type_decl``
+        is a C type, e.g. 'int', 'unsigned __int32', 'char[5]', 'my_struct'."""
+        item: dict = {"addr": hex(ea), "type": type_decl}
+        if name:
+            item["name"] = name
+        res = self._first_result(self.client.call("make_data", items=[item]))
+        if res.get("ok") is False or res.get("error"):
+            raise IDAToolError(
+                f"make data @ {ea:#x}: {res.get('error') or 'rejected'}")
+
     def region_label(self, ea: int) -> str:
         """Display name for a non-function address (segment-qualified)."""
         try: