0.84.0

Added

• memo projects evidence reads the project's linked chats (MCP project_evidence too, on by default). Every
  message of a chat confirmed as the project's is read, at most 16 chats, oldest link first, when --source holds
  the chat's account. Those items have context: "linked-chat" (text output [linked chat]): they name nothing.
  A suggested link is not read. A linked chat outside --source, or past the 16th, is listed in unread_sources
  with kind: "linked-chat" and reason out-of-scope or linked-chat-limit. The result also carries
  linked_chats with each chat's state.
• memo relationships add chat:<provider>/<account>/<chat> project:<id> makes a chat a project's
  (member-of only). The reference names the chat's account, so no account is chosen for you. An agent's link
  waits for the owner's memo relationships confirm.

Changed — may break callers

• Needs @wirecat/cli-core 0.377.0. A project evidence lane's query is null for a linked chat; its chat
  holds the chat reference.

Fixed

• A document hit's around is centred on the first paragraph that names a searched word, in document order,
  not on the paragraph the first lane found. A document item also carries moreMatches: how many later paragraphs
  name a searched word too (@wirecat/cli-core 0.377.0).
• projects evidence help no longer says "literal search". Each name, alias, --context-query and
  --contact is a search where every word must appear in one text, in any order, as whole words; it is not a
  phrase search.