Implement the five 7 October pending rule rulings

The user answered five recorded questions; each ruling is indexed in
RULE_DECISIONS.md and implemented with a focused regression.

- CHOAM opening income counts as a qualifying collection, so low-population
  Tupile adds its bank increment under the Inflation multiplier. The engine
  guard is removed and the projection/notice expose the added bonus.
- An exhausted Richese cache is legal and restores one ordinary lot; the
  canceled/prevented compulsory cache auction branch restores the reduction
  before the ordinary pool runs and the cache offer is skipped when no cache
  lot can run. The pure continuation quote mirrors the count.
- Suk-rescued casualties count toward Advanced Atreides' seven Kwisatz
  Haderach losses: the battle-loss counter gains the full dialed allocation in
  both rescue paths, and the earlier Suk availability restriction is removed.
- The Guild Nexus Secret Ally reserve return overrides the Arrakis-to-native-
  Homeworld restriction for the holder's own reserves and deposits through the
  shared native-reserve pipeline (generalized from the revival deposit).
- Interior passengers count as entering the territories a relocated Ixian HMS
  points into, so Sandmaster collects there before the native collection.

Full offline suite 7804/7804, types and lint pass. Historical evidence and
superseded test expectations are updated to the ruled behaviour; preserved
combined Homeworld/Nexus, occupation and Richese captures are unblocked but
not re-run here. No existing game, seat or saved state was changed.

docs/NEXUS_GUILD_SECRET_ALLY_RULES.md

@@ -32,9 +32,7 @@ Native Homeworld custody can represent the same outgoing reserves without creati
 
 **Price and permission are separate.** E3 already permits world-to-world shipment by non-Guild factions, with a one-spice-per-force tariff and Guild half price. The card's Guild-rate clause therefore supports `ceil(n / 2)` for an independently legal world-to-world invasion. This price composition borrows no high-Junction advantage and grants no new destination. Preserve the source custody and own/ally-world restrictions. [GF9 E3, p10](https://www.gf9games.com/dune/wp-content/uploads/EcazMoritani-Rulebook-LOWRES.pdf#page=10)
 
-**Arrakis to native reserves remains a material interpretation question when Homeworlds are enabled.** Reserves occupy native Homeworld discs; E3 expressly restricts Arrakis-to-Homeworld shipment to Guild, with a named Homeworld-advantage exception. The Nexus expressly grants reserve return. A card-specific exception is plausible, especially because it already exceeds normal alliance rights. Conversely, E3's specific Homeworld restriction can be read as limiting that grant. Its Nexus FAQ resolves neither reading. [GF9 E3, pp9–11 and 16](https://www.gf9games.com/dune/wp-content/uploads/EcazMoritani-Rulebook-LOWRES.pdf#page=9)
-
-The concrete question is whether Secret Ally's reserve-return permission overrides that restriction **for the holder's own native reserves**. An affirmative answer does not grant Arrakis-to-arbitrary-foreign-Homeworld transport. Until resolved, expose this particular return as unfinished; ordinary Arrakis routes and independently legal world-to-world discounted shipment need not be blocked.
+**Arrakis to native reserves — resolved 7 October 2026 by user ruling.** Reserves occupy native Homeworld discs; E3 expressly restricts Arrakis-to-Homeworld shipment to Guild, with a named Homeworld-advantage exception. The Nexus expressly grants reserve return. The user ruled that the Secret Ally's reserve-return permission **overrides that restriction for the holder's own native reserves**. It still does not grant Arrakis-to-arbitrary-foreign-Homeworld transport; ordinary Arrakis routes and independently legal world-to-world discounted shipment are unchanged. The engine now routes the return through the native-reserve deposit pipeline so Homeworld custody stays conserved.
 
 ## Implementation boundaries