Make cargo catalog save-native

docs/README.md

@@ -138,12 +138,16 @@ The highest-value next passes are now:
 - cargo-production `230..240` and territory-access-cost `453` now execute too through minimal
   world-side scalar landing surfaces: slot-indexed `cargo_production_overrides` and
   `world_restore.territory_access_cost`
+- recipe-book probing now derives a save-native `cargo_catalog` too, so save-slice documents carry
+  stable cargo slot labels and token-stem evidence into runtime state without requiring a separate
+  cargo simulation layer
 - world-scalar ordinary-condition coverage now matches those runtime surfaces too: checked-in
   metadata lowers named locomotive availability, named locomotive cost, named cargo-production
   slot thresholds, aggregate cargo production, limited-track-building-amount, and
   territory-access-cost rows into explicit runtime condition gates
 - the remaining world-scalar condition frontier is now narrow and explicit: unsupported families
-  such as `All Factory Production` stay parity-only on `blocked_unmapped_world_condition`
+  such as `All Factory Production` stay parity-only on `blocked_unmapped_world_condition`; the
+  remaining cargo frontier is slot-to-class classification, not save/import plumbing
 - keep in mind that the current local `.gms` corpus still exports with no packed event collection,
   so real descriptor mapping needs to stay plumbing-first until better captures exist
 - use `rrt-hook` primarily as optional capture or integration tooling, not as the first execution

docs/runtime-rehost-plan.md

@@ -97,12 +97,16 @@ Implemented today:
 - the remaining recovered scalar world families now execute as well: cargo-production `230..240`
   rows lower into slot-indexed `cargo_production_overrides`, and territory-access-cost descriptor
   `453` lowers into `world_restore.territory_access_cost`
+- cargo slot identity is now save-native as well: the recipe-book probe derives a bounded
+  `cargo_catalog` into save-slice documents and runtime state, so cargo descriptors and
+  `%1 Production` conditions can expose stable slot metadata without a live cargo simulation layer
 - world-scalar ordinary-condition coverage now aligns with those runtime surfaces too: checked-in
   metadata lowers named locomotive availability, named locomotive cost, named cargo-production
   slot thresholds, aggregate cargo production, limited-track-building-amount, and
   territory-access-cost rows into explicit runtime condition gates
 - the remaining world-side condition frontier is now narrower and more honest: unsupported scalar
-  families such as `All Factory Production` stay visible on `blocked_unmapped_world_condition`
+  families such as `All Factory Production` stay visible on `blocked_unmapped_world_condition`;
+  the remaining cargo frontier is slot classification rather than missing save/import context
   instead of falling back to generic placeholder ids
 
 That means the next implementation work is breadth, not bootstrap. The recommended next slice is