GeezerVison

Summary

SQLite RETURNING aliases were ignored when naming generated result columns. convertReturning built each ResTarget from the expression but never set Name, unlike convertResultColumns for SELECT.

Aliases (with or without AS, including quoted identifiers) are now copied onto the target, so names match what SQLite itself reports. This covers INSERT, INSERT … ON CONFLICT DO UPDATE, UPDATE and DELETE.

Fixes #4680

Test plan

Added internal/endtoend/testdata/returning_aliases/sqlite covering the cases from the issue. Goldens generated with the fix show NewID/Doubled (and the other expected names) instead of ID/Column2.

go test -count=1 -timeout 180s -run 'TestReplay/.*/returning' ./internal/endtoend

AI assistance

This change was prepared with assistance from Grok Bot. I reviewed the SQLite converter against the SELECT path, generated the goldens before and after the fix, and ran the returning end-to-end tests locally.