Add focusedInvestigationInput {targetDescription, question, answer} to
composeDeepInvestigationCheckpoint() return object. These are the actual
invocation values: targetDescription from situationGraph node, question
is previousQuestion (NOT node.openQuestion), answer is function param.
Deterministic verification: syntax check passed; source-inspection test
assertions E10/E11 added and pass (0 failures). Call-count ownership:
up to 3 live generateReconstruction calls (focusedDeconstruct +
reconsiderCompletedEpisode + synthesizeCurrentUnderstanding).
No provider, graph, or production behavior changed.
Co-Authored-By: Claude Code <noreply@anthropic.com>