initial commit on Federted servers

db/migrations/007_page_search_index.sql

@@ -0,0 +1,10 @@
+-- 007_page_search_index.sql — make page search index-backed and literal.
+--
+-- The page list searched title/content with an unescaped ILIKE pattern: "%"
+-- and "_" behaved as wildcards and every request scanned the owner's pages.
+-- The handler now escapes those characters; these trigram indexes let
+-- Postgres serve the substring predicate without a sequential scan.
+-- pg_trgm is a trusted extension, so the database owner can enable it.
+CREATE EXTENSION IF NOT EXISTS pg_trgm;
+CREATE INDEX IF NOT EXISTS "Page_title_trgm_idx" ON "Page" USING gin (title gin_trgm_ops);
+CREATE INDEX IF NOT EXISTS "Page_content_trgm_idx" ON "Page" USING gin (content gin_trgm_ops);