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

src/beaver_gateway/conversations/rows.py

@@ -19,6 +19,7 @@ from beaver_gateway.backends.transcript import (
 )
 from beaver_gateway.conversations.kinds import KINDS, Kind
 from beaver_gateway.conversations.state import State, iso
+from beaver_gateway.conversations.texts import split_service
 from beaver_gateway.frontends.markdown.history import load_messages
 from beaver_gateway.storage.models import (
     Conversation,
@@ -482,9 +483,31 @@ class Rows(State):
                 return await load_messages(
                     session, conversation_id=cast("int", conv.id)
                 )
-        return messages_from_entries(
-            cast("Any", await self.entries(conv)), with_ts=True
+        messages = messages_from_entries(
+            cast("Any", await self.entries(conv)), stamped=True
         )
+        return [self._unwrapped(message) for message in messages]
+
+    def _unwrapped(self, message: dict[str, Any]) -> dict[str, Any]:
+        if message["role"] != "user":
+            return message
+        content = message["content"]
+        if isinstance(content, str):
+            text, service = split_service(content, self._texts)
+            return (
+                message
+                if service is None
+                else {**message, "content": text, "service": service}
+            )
+        for index, block in enumerate(content):
+            if block.get("type") != "text":
+                continue
+            text, service = split_service(str(block.get("text") or ""), self._texts)
+            if service is not None:
+                blocks = [*content]
+                blocks[index] = {**block, "text": text}
+                return {**message, "content": blocks, "service": service}
+        return message
 
     async def entries(self, conv: Conversation, *, subpath: str = "") -> list[Any]:
         if conv.session_id is None: