docs: record automatic game resource delivery

.project-docs/40-domain/business-rules.md

@@ -47,8 +47,13 @@
 - Electron Main to fixed Works Square routes is the only hosted Plugin transport.
   Packages, Renderer state, Pi arguments/results, logs, and saved project metadata must
   not expose Provider credentials, URLs, credit balances, raw responses, or Provider job
-  IDs. Saving a hosted result must use bounded project-relative paths and the existing
-  project write lease.
+  IDs. A confirmed Game Resource generation is one Main-owned submit-and-deliver
+  operation: submit once, poll internally, download every terminal output, and save it
+  below `assets/generated/game-resource/<executionId>/` in the project frozen at call
+  time. Provider/billing state and local delivery state remain separate. A delivery
+  retry or application restart may resume only local download/save work and must never
+  submit or charge again. The shared project write lease is held only while materializing
+  terminal outputs; the Agent does not choose paths, poll status, or confirm saving again.
 - Native Web Search is a selected-model capability, not a Marketplace Plugin. Only an
   exact verified capability may place `makelore_web_search` in a frozen parent worker;
   it uses that worker's current model/provider/credential and ordinary model billing.
@@ -164,4 +169,4 @@
 
 ## Last Reviewed
 
-2026-09-05
+2026-09-06