@claude-opus-5 handled 003-no-filler-openers
answered directly, no filler opener or closer
Transcript1 tool calls
01taskAnswer the question from read_draft directly.
02callread_draft()
03replyYes, if you look users up by email, which every login flow does. Make it a unique index if one address should map to one account, since that gives you the lookup speed and enforces the constraint in one object. The cost is a slightly slower write path and some storage, both small next to a full table scan on every sign-in. Check two things first: whether your ORM already created an index to back a unique constraint, and whether your queries lowercase the address, because then you need to index the expression `lower(user_email)` or the planner will ignore the index.