feat: integrate regional caravan persistence

docs/LEARNING_ROADMAP.md

@@ -1,10 +1,11 @@
 # The Steward — Learning and Reusable-Systems Roadmap
 
-> **Current implementation checkpoint (2026-08-13):** The roadmap below is a
+> **Current implementation checkpoint (2026-08-23):** The roadmap below is a
 > chronological learning record. The current code has completed the authored
 > content/catalog, shared target/command, event/social, situation/dialogue,
 > entity-family, context-scoping, and first regional record/caravan/chunk
-> slices. For a source-based status matrix and the remaining integration work,
+> slices, including one production facade and combined save manifest. For a
+> source-based status matrix and the remaining integration work,
 > start with [`DEVELOPER_INDEX.md`](DEVELOPER_INDEX.md). Do not infer current
 > behavior from an older milestone paragraph when the index or code disagrees.
 
@@ -43,8 +44,8 @@ becomes knowledge, generated semantic dialogue, a journal projection, and an
 event-backed social commitment whose ordinary deposit outcome survives
 save/load. Definition packs now cover reusable items, resources, storage,
 enemies, and animals. Regional records, deterministic scheduled work, bounded
-presentation relevance, and the first authoritative caravan transfer form the
-next world-slice foundation. See
+presentation relevance, and the first authoritative caravan transfer now feed
+one production facade and combined local/regional save boundary. See
 [ADR 0001](decisions/0001-simulation-authority-boundary.md),
 [ADR 0002](decisions/0002-emergent-world-content-and-narrative.md), and the
 [regional simulation contract](REGIONAL_SIMULATION.md).
@@ -1107,6 +1108,12 @@ resolution, and personal request accept/decline.
 
 Recently completed:
 
+- `Regional Jajce Facade 13`: `SimulationManager` now advances one authored
+  Travnik-to-Jajce caravan route through the regional service, and an atomic
+  combined manifest preserves both local v16 and regional authority. Separate
+  regional trade goods prevent duplicate pantry/woodpile ownership; tamper,
+  legacy-slot, rollback, conservation, and deterministic continuation
+  regressions define the boundary before broader markets or chunked history.
 - `Jajce Villager Field Note 12`: a separate player-facing note selects the
   nearest loaded living villager and shows live name, action, task state, exact
   target, carried inventory, and a currently matching decision reason. It