docs: capture the embodied player citizen slices in plans and schema

docs/SIMULATION_STATE_SCHEMA.md

@@ -3,7 +3,7 @@
 ## Current contract
 
 `SimulationStateRecord` is the versioned JSON boundary for the current
-simulation. The current world schema is v12 and captures:
+simulation. The current world schema is v13 and captures:
 
 - simulation seed, tick interval, tick count, clock remainder, and elapsed
   clock ticks;
@@ -29,14 +29,16 @@ simulation. The current world schema is v12 and captures:
 - the player's Standing reputation (0–100), resolved-need count, and per-NPC
   gratitude, plus named player quest records that reference the originating
   opportunity or animal, requester NPC, resource/target/amount, Standing
-  reward, and exact resolution or invalidation tick.
+  reward, and exact resolution or invalidation tick;
+- the player's embodied state: hunger, energy, starvation progress, death
+  count, and carried inventory with its capacity (schema v13).
 
 The top-level identity is:
 
 ```json
 {
   "schema": "the_steward.simulation",
-  "schema_version": 12
+  "schema_version": 13
 }
 ```