[gedaiu]

Depends on #10 (migration 9001 facts_live_predicate_idx); this branch is built on its head, so merge #10 first, then this shows only its own commit.

Lore's memory mirror pushes prose to api sources, and every new name in it runs containment_reviews. On prod (re-cinq/lore base: 39k entities, 39k alias facts, 960k facts) that took 1.1 s per call, 833 ms of it JIT; 25 at once pinned the DB at 4 CPU.

• SET LOCAL jit = off for the query.
• Alias facts are found through the predicate looked up as a scalar subquery, so 9001's index applies.
• 9002: pg_trgm + a GIN trigram index on live entity names for the forward LIKE '%mention%' branch.
• The reverse branch (mention LIKE '%name%') matches the mention's own substrings (≥ MIN_CONTAIN_CHARS) by equality on existing btree indexes: same semantics, no escaping needed.

Seeded base of production shape, jit off: 72 ms → 15 ms for a name with no hits, 73 → 60 ms for one with 3,900. A trigram index on all facts was faster for rare names but slower for common ones, 55 MB and on the write path, so it is left out. New tests: contained_names units, and the Mr. Holmes ↔ Sherlock Holmes alias pairing. fmt, clippy and cargo test --workspace green. Schema version 104 → 105; renumber if #10 changes.

Fork only for now; upstream deeplethe#1104 / deeplethe#1322 rewrite this predicate, noted in the code for the next sync.