Counter each changing origin in a resident BG gather

Hold both physical groups until all required matching responses allow the original movement. Share normal packet denials across gather and ordinary moves, then resume one original movement suffix.

docs/RULE_DECISIONS.md

@@ -1,5 +1,19 @@
 # Rule decision index
 
+## Planetologist resident matching groups — 24 October 2026
+
+Compose supplied physical28's resident-matching rule with physical17's counter
+for one group. Partition the actual two-origin gather and offer one counter per
+changing physical origin, using existing normal receipt/denial formats. Stable
+origin order and all-or-nothing gather commitment are explicit provisional
+composition: partial allowance moves/flips nothing, and prevention stops both
+groups while recording only the prevented packet's normal scoped denial.
+Retain the unused movement and legal replacement; normal/gather declarations
+cannot bypass each other's prevented packet. Consume the private approval batch
+before one original movement/collection suffix. Preserve Basic, the existing
+enemy-only/empty policy and already-recorded legacy one-shot responses.
+[Contract, sources and evidence](ADVISOR_MATCHING.md#planetologist-gathering-into-residents--24-october-2026).
+
 ## Guild/Junction incoming matching — 24 October 2026
 
 Supplied physical28's marked shipping/moving clause and physical17's group