The gallery cursored on COALESCE(post.post_date, image_record.created_at)
across the Post outer join — an expression spanning two tables that no
index can serve, so every /scroll sorted a large slice of the library
(and the old frontend fired ten serially). Materialize it:
- image_record.effective_date column + ix_image_record_effective_date
(effective_date DESC, id DESC); alembic 0035 backfills
COALESCE(primary post's post_date, created_at) for existing rows.
- gallery_service._effective_date_col() now returns the column, so scroll
/ timeline / jump / neighbors all order off the index instead of
re-deriving the COALESCE. _neighbors reads record.effective_date
directly (drops an extra Post lookup).
- importer._apply_sidecar maintains it: when a primary post with a date is
linked, effective_date = post.post_date; plain inserts keep the
created_at-equivalent server default.
Tests: sidecar import asserts effective_date == post.post_date; gallery
ordering/timeline/jump test seeds set effective_date alongside created_at.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Removed the app/client fixtures duplicated across 36 test files (two
variants: separate app + client(app), and a self-contained client() that
called create_app inline) and the now-unused create_app imports. Both
fixtures now live once in conftest.py. test_suggestions_bulk keeps its
import (builds the app inline in two tests); test_health drops its local
client + unused pytest_asyncio.
Net -415 lines.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen