fix(vault,conversations): the envelope diff drops query blocks and frontmatter, history hands the envelope apart from the user's words

src/beaver_gateway/backends/transcript.py

@@ -164,9 +164,9 @@ def build_entries(
 
 
 def messages_from_entries(
-    entries: Iterable[Mapping[str, Any]], *, with_ts: bool = False
+    entries: Iterable[Mapping[str, Any]], *, stamped: bool = False
 ) -> list[dict[str, Any]]:
-    """Messages as the model saw them; ``with_ts`` adds when each one was written."""
+    """Messages as the model saw them; ``stamped`` adds each one's entry id and time."""
     out: list[dict[str, Any]] = []
     last_message_id: str | None = None
     for entry in entries:
@@ -189,7 +189,8 @@ def messages_from_entries(
                     "role": "user",
                     "content": _user_content(content),
                 }
-                if with_ts:
+                if stamped:
+                    message_out["id"] = entry.get("uuid")
                     message_out["ts"] = entry.get("timestamp")
                 out.append(message_out)
             last_message_id = None
@@ -205,7 +206,8 @@ def messages_from_entries(
             out[-1]["content"].extend(blocks)
         else:
             message_out: dict[str, Any] = {"role": "assistant", "content": blocks}
-            if with_ts:
+            if stamped:
+                message_out["id"] = entry.get("uuid")
                 message_out["ts"] = entry.get("timestamp")
             out.append(message_out)
         last_message_id = message_id