[leemour]

Task

Fix the search gaps of the 2026-11-11 audit that the owner approved (NEED-2560 answer A, TASK-986), in one PR. The
shape of search results and pagination is unchanged.

Why

Agents and people wrote queries that found nothing and said nothing (status:open, invoice^2, author: in messages),
used two names for one concept, or hit a refusal that named no alternative. Every message search also spent about
0.45 s at 1M messages counting every chat's messages for its coverage.

What

Gap	Example	Before	After
BUG-740 unknown field	status:open	searched as the words, 0 hits, no error	query.unknown-field: tasks list status:open, or quote it
BUG-740 notes field in messages	author:x, site:x	0 hits, no error	query.unsupported-field: "a notes field — search notes reads it"
BUG-741 boost	invoice^2	searched the text "invoice^2", 0 hits	query.unsupported-operator: drop it (invoice) or quote it
UX-221 aliases	sender:olga, title:Альфа	sender: unknown; title: matched nothing in messages	sender: is from:; title: is the chat title (messages) and the subject (mail); one mapping table in the guide
UX-224 presence	_exists_:from, subject:*	refused / unsupported	keeps messages that have a value; other fields refuse with has:file, has:link…
UX-223 tasks	tasks list request, title:request	query.bare-word / title prefix only	finds "Review the request"
UX-223 contacts	contacts list phone:+34, email:example.com	+34 misparsed; no email/phone	matched (phone by digits)
UX-223 deals	search all title:Поставка	words anywhere in the deal	the deal's or lead's title only
UX-222 reasons	chat:Альфа* fitting nothing; 2-letter chat search	bare not_found / validation	query.no-match with chat:*Альфа*; query.short-text with a hint
PERF-99 word end	*ени at 1M	refused (candidate rows), no term named	50 hits in 647 ms; a page it cannot fill names the term and suggests *part*
PERF-100 coverage	договор* at 1M	478 ms	31 ms (coverage read 445 ms → 0.2 ms)
DEBT-326	after:	reason legacy_date_field (not registrable)	query.legacy-date-field, registered; the reasons test now also reads searchError(...)
DEBT-327	bin/verify-query-reference on JDK 25	failed on Java object ids	passes on JDK 21 and 25

Not done, and why:

• Tasks in search all: memo's MCP gates each search all lane by permission and has no tasks gate, so a tasks
  lane would show task titles where tasks.list is denied. It needs memo's gate in the same bump.
• Meeting description, and title: in meetings search: needs a new hit scope or a folded description column
  (a migration). Meeting titles already match in search all.

Breaking items are under "Changed — may break callers" in the changelog fragment.

Measurement: cli-testing, performance/search/coverage-step
(WireCatLabs/cli-testing#356).

Testing

• Each new or changed test fails on main's sources (25 tests in 14 files) and passes here.
• typecheck, lint, docs:check and the full suite pass locally; verify-query-reference passes on JDK 21 and 25.
• Every behavior in the table was run against a seeded synthetic store, before (main's dist) and after.

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