1. C++ codebase continues to build/run without issue.
2. `recreate_message_store_threads_table` migration succeeded and new `message_store_threads` table is as expected:
{F821730}
Before:
{F821724}
After:
{F821725}
IMPORTANT: While I tested this migration a few times and read through things as carefully as I could, making changes to C++ codebase and SQLite store can be risky. Adding @ashoat and @kamil as blocking to take a look... would appreciate careful review to ensure everything is correct.