7851f150fa
- keyword searches carry wpdb's placeholder escape for "%" ({<hash>}), which
is new in every request, so md5(count SQL) never matched across requests
and every keyword search recounted (the 2.2 "keyword + filter routed slower
than native" finding). The key now uses remove_placeholder_escape()
- found in the 2.3 acceptance: dev36 keyword + price routed 6.2 s vs native
4.9 s; PR-091's in-process check reused one process, one escape
- Verify: PostQueryRouterFoundRowsTest (two escapes, one COUNT), integration
588, unit 703, phpcs, stan; dev36 front-end
- PR: PR-116 (2.3 acceptance)