P1: Wrap store helper queries (uniqueSlug, uniqueSlugExcluding,
backfillItemNumbers) with s.q() for placeholder rebinding.
P1: Replace boolToInt() with s.dialect.BoolToInt() so pgx receives
native booleans instead of 0/1 integers.
P1: Change boolean scan variables from int to bool to match
PostgreSQL's native boolean type.
P1: Fix FTS table aliases in PostgreSQL search branches.
P1: Make api_tokens.workspace_id nullable for user-scoped tokens.
P2: Move eventBus.Close() before srv.Shutdown() so SSE handlers
drain before the HTTP server shutdown deadline.
- Create Dialect abstraction for SQLite/PostgreSQL SQL differences
(JSON ops, FTS, placeholders, datetime, aggregation)
- Add Store.NewPostgres() constructor with connection pooling
- Create consolidated PostgreSQL schema (pgmigrations/001_initial.sql)
with tsvector FTS, JSONB columns, and GIN indexes
- Refactor all store queries (~150) to use s.q() for placeholder rebinding
- Replace hardcoded json_extract/FTS5/GROUP_CONCAT with dialect methods
- Support PAD_DB_DRIVER=postgres + PAD_DATABASE_URL env vars
- Keep SQLite as the default for local/self-hosted mode
- Add dialect unit tests (rebind, SQLite, PostgreSQL)
xarmian