Batch hydrate normalized messages for session load

tasks/done/007-message-display.md

@@ -4,6 +4,8 @@
 
 Create the message display component that renders user and assistant messages in a scrollable stream, showing message content, tool calls, and streaming states.
 
+> Note: This legacy task predates `message-stream-v2` and the normalized message store; the new implementation lives under `packages/ui/src/components/message-stream-v2.tsx`.
+
 ## Prerequisites
 
 - Task 006 completed (Tab navigation in place)

tasks/done/008-sse-integration.md

@@ -1,5 +1,7 @@
 # Task 008: SSE Integration - Real-time Message Streaming
 
+> Note: References to `message-stream.tsx` here are legacy; the current UI uses `message-stream-v2.tsx` with the normalized message store.
+
 ## Status: TODO
 
 ## Objective

tasks/done/048-message-stream-refactor.md

@@ -32,3 +32,4 @@ Finish migrating the message stream container, tool call blocks, and reasoning U
 ## Notes
 - Branch suggestion: `feature/task-048-message-stream-refactor`.
 - Capture short screen recording or screenshots if tool call layout adjustments were required.
+- Legacy `message-stream.tsx` has since been replaced by `message-stream-v2.tsx` using the normalized message store.