Support Basic allied No-Field transit

docs/ALLIED_TRANSIT_RULES.md

@@ -2,6 +2,26 @@
 
 Audit: 7 September 2026. Read-only source and code audit, retained by the coordinating agent. Scope is classic GF9 base rules and the applicable November 2020 FAQ, not tournament or movie-game rules.
 
+## Basic allied No-Field transit — 28 October 2026
+
+**Prototyped / Partial.** The November 2020 FAQ p. 2 permits shipment into
+an ally's territory followed by departure, subject to stronghold limits. The
+printed Richese alliance ability ships its ally's off-planet forces and
+immediately reveals the No-Field. Provisionally compose these rules for a
+Basic offer to the Richese-occupied territory. The recipient consents, the
+native cancellation and payment sequence applies, and the arriving counters
+are ordinary physical forces. The pre-arrival physical baseline records only
+new visitors; finishing without moving them out sends those visitors to Tanks
+under the existing provisional Basic fallback. A zero-force arrival creates no
+visitor receipt. The supplier's older marker reveals before this baseline is
+recorded. Supplier and recipient see the fallback before offering or accepting;
+minimal AI retains its existing legal empty-destination offer path.
+
+This composition and the no-departure fallback are software interpretations,
+not publisher rulings. Advanced allied No-Field transit and other transport
+combinations remain separate. [FAQ](https://www.gf9games.com/dune/wp-content/uploads/2020/11/Dune-FAQ-Nov-2020.pdf),
+[CHOAM & Richese rulebook](https://www.gf9games.com/dune/wp-content/uploads/2021/11/CHOAM-Rulebook-low-res.pdf).
+
 ## Concealed No-Field at the separation deadline — 27 October 2026
 
 A deployed marker is one force for all effects, including0, under publisher E2
@@ -118,7 +138,7 @@ Tanks. A zero marker reveals without casualties. Physical visitors use the
 same pre-arrival baseline; an earlier voluntary reveal is not repeated.
 The source FAQ permits allied shipment transit and the Richese rules count a
 concealed marker as one force; their combination and no-exit consequence are
-provisional. Allied No-Field use, paired markers and other
+provisional. Paired markers and other
 transport compositions remain separate.
 
 ## Basic ordinary allied shipment prototype — 8 October 2026
@@ -148,8 +168,9 @@ co-occupation deadlines still resolve separately. AI prioritizes available
 native departures and does not retain a stronghold sentinel from a
 visiting group.
 
-Allied No-Field arrivals, mobile/homeworld transports and
-optional arrival compositions are not expanded by the Basic prototype.
+Mobile/homeworld transports and optional arrival compositions are not expanded
+by the ordinary Basic prototype. Allied No-Field arrivals have their own
+later scoped prototype above.
 Advanced ordinary physical entry is connected in the follow-up above.
 Refinement of interrupted and mixed-cohort interactions remains later work.