Support staged group shipment funding

docs/OPTIONAL_ALLIANCE_VICTORY.md

@@ -1,5 +1,25 @@
 # Optional three-stronghold alliance victory
 
+## Group ordinary-shipment funding — 28 October 2026
+
+**Staged Basic prototype, not a selectable game mode.** Group allies can set
+aside separate amounts for each other during Shipment and Movement. A shipper
+may explicitly allocate amounts from each pledged donor to an ordinary physical
+reserve shipment; the authoritative payment rechecks those exact pledges,
+charges the shipper's remainder once, and retains each donor's identity. An
+outside Guild receives the eligible payment. Unspent pledges return to their
+respective donors at phase end. Alliance edge authorizations are renewed on
+formation, preserved for surviving edges and revoked on departure, with
+aggregated refunds for removed edges. Controls show only the viewer's own
+outgoing and incoming pledges; bots may continue using their own spice.
+
+This first path is limited to Basic classic-faction staged groups without a
+Guild member, optional modules, Karama shipment pricing or special transport.
+Guild-allied rates, other shipment types, group-funded bidding, and the
+remaining faction benefits and interactions are not connected. No lobby can
+start a group game yet. The recipient-specific pledge and allocation procedure
+is a provisional online convention rather than a printed worked example.
+
 ## Group Nexus negotiation — 28 October 2026
 
 **Integrated groundwork, not a selectable game mode.** In a staged Basic