* fix(memory): read the complete scope in the substring search fallback
_search_substring iterated list_facts without paginating, so the
adapter-less fallback only ever saw the default page of 100 facts.
With 150 matching facts in a scope (max_facts allows up to 500),
memory_search returned 100 results for top_k=150 and silently dropped
every match past the first page; DeerMem.search keeps these results
whenever they are non-empty, so its uncapped fallback never ran. Read
the complete scope instead, as the scoped index rebuild already does.
* test(memory): drop in-page fact-100 from the past-page assertion
fact-100 was the last id inside list_facts' old first page
(``matched[0:100]`` in insertion order), so its presence does not
distinguish the fixed search from the pre-fix page; fact-101 and
fact-150 (plus the ``len(results) == 150`` check) carry the regression
signal. Keep a boundary note so the remaining ids are not misread.
or 0.5 cannot distinguish an explicit 0.0 from an unset field, so a discounted fact got the default confidence weight in both the FTS5 document and the substring fallback, while the same row indexed through FTS5Retrieval.index_fact kept its zero weight.
* feat(memory): integrate FTS5 retrieval adapter
* deps: add jieba as default dependency for Chinese tokenization
Without jieba, FTS5 unicode61 tokenizer treats entire Chinese sentences
as single tokens, making single-character or sub-phrase searches
impossible (e.g. '吃' or '油泼面' returns 0 hits against
'用户喜欢吃油泼面'). jieba segments Chinese text into meaningful tokens
before indexing.
* fix(memory): avoid treating hyphens as FTS5 operators
* feat(memory): make Chinese tokenization optional
* fix(memory): warm every requested retrieval scope
* fix(memory): close retrieval resources on shutdown
* fix(memory): close backend when shutdown flush fails
* fix(memory): recreate corrupt retrieval index
* fix(memory): tolerate partial retrieval rebuilds
* fix(memory): warm retrieval index in background
* fix(memory): preserve shutdown flush budget
* fix(memory): stop retrying partial lazy rebuilds
* fix(memory): close retrieval through storage
* refactor(memory): simplify retrieval scope limit
* docs(memory): clarify retrieval shutdown lifecycle
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
