Adopts four things from the instance-map exercise that the chapter did not
carry: agency congruence split into authorship and answer, unresolved as an
inner field the status marker regulates, introspection typed as a secretion
with its own provenance, and coincidence as part of the same notability gate.
The introspection rule is the one with a live consumer. The N+1 cadence
attends to state and writes about it every turn, so introspection here runs
at one to one with experience rather than occasionally.
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