Which direction data moves across a declared boundary, and what kind of
boundary it is. Author-declared documentation only -- never statically
verified against an operation's actual execute/subscribe body (those
stay opaque per AGENTS.md invariant 6). A report may never present an
endpoint as a proven fact; see AGENTS.md's declared-vs-proven invariant.
Which direction data moves across a declared boundary, and what kind of boundary it is. Author-declared documentation only -- never statically verified against an operation's actual
execute/subscribebody (those stay opaque per AGENTS.md invariant 6). A report may never present an endpoint as a proven fact; see AGENTS.md's declared-vs-proven invariant.