feat: add person history and trust reactions

docs/LEARNING_ROADMAP.md

@@ -698,11 +698,22 @@ The first importance/retention slice is complete:
   boundary, capacity, cause-protection, save/checksum, and informed-choice
   regressions cover the slice.
 
-This advances the first Milestone 6 evidence-to-choice path without claiming
-full belief simulation. The practical next sequence is a compact retained
-memory/person-history view and a visible social-reaction cue, then one bounded
-Milestone 7 rumour/opportunity proof without generalized distortion or
-free-form dialogue.
+The compact history/reaction slice is complete:
+
+- the selected-person inspector separates lasting-first retained memories from
+  the NPC's own objective event history and keeps both lists bounded;
+- remembered facts show performed, witnessed, communicated, or legacy
+  provenance without copying authoritative events into presentation state;
+- a real trust change blooms once above its observer, remains visible in
+  cinematic mode, and is never persisted or replayed after visual rebuild;
+- ranking, forgetting/objective-history separation, observer-only routing,
+  checksum neutrality, restore, cinematic, and death regressions cover the
+  slice.
+
+This completes the first bounded Milestone 6 evidence-to-choice presentation
+path without claiming full belief simulation. The practical next slice is one
+bounded Milestone 7 rumour/opportunity proof without generalized distortion,
+free-form dialogue, or a generic quest framework.
 
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