Review fixes for #4879 (argus):
- mcp.md: the 'Waking the agent' cross-ref pointed at Core tools, which
never mentions UpsertTodo/HIVE_AGENT_SOCKET. Point it at
docs/tools/bash.md's 'Completion as a todo (loose-ends v2)' section,
which documents the actual upsert/signal/clear mechanism.
- conventions.md 'Wake injection': still framed AgentRequest::Wake (a
type that no longer exists) as the live wake surface with matrix/forge
as callers. hive_core_agent_sock::Request::Wake has exactly one
non-test reference on origin/main (the handler at
socket_server/mod.rs:307) and no client; matrix/bash/forge all moved
to the in-agent todo socket. Rewritten to match, linking mcp.md's
'Waking the agent' section instead of duplicating it.
docs/tools/matrix.md:136-137 has the same stale AgentRequest::Wake claim
(and contradicts its own :159-165) but is out of scope (#4136) — noted
as a follow-up in the PR body instead of edited.
ac35f0f2cf