Clarify MVP time pacing

AGRARIAN_DEVELOPMENT_ROADMAP.md

@@ -34,7 +34,7 @@ Core commitments:
 
 Baseline rule:
 
-- [x] Use real local time pacing for the represented Earth region as the default server-authoritative world clock. Test-only time acceleration remains allowed.
+- [x] Use `4 real hours = 1 in-game day` as the MVP gameplay calendar target, while day/night presentation mimics the represented Earth region's local solar/weather context.
 
 Design intent:
 
@@ -406,7 +406,7 @@ Target deliverable: A small group can join a server, spawn into one biome, gathe
 - [x] Create world time system.
 - [x] Add day/night cycle.
 - [x] Add configurable time scale.
-- [x] Set default server time scale to real-time pacing for the represented Earth region.
+- [x] Set default server time scale to `4 real hours = 1 in-game day`.
 - [ ] Add real local time-zone and sunrise/sunset lookup for Ground Zero by latitude/longitude.
 - [ ] Add Agrarian calendar conversion helpers for days, seasons, crop cycles, livestock maturity, spoilage, and long-running tasks.
 - [ ] Add temperature curve by time of day.
@@ -1397,7 +1397,7 @@ The first playable MVP is not complete until:
 - [ ] Players can create fire.
 - [ ] Players can build a primitive shelter.
 - [ ] Weather and time affect survival.
-- [ ] Day/night follows the real local time and light cycle of the represented map tile.
+- [ ] Day/night presentation follows the real local solar/light context of the represented map tile while the MVP gameplay day remains `4 real hours = 1 in-game day`.
 - [ ] Hunger and thirst matter.
 - [ ] Injury or damage can create meaningful risk.
 - [~] At least one wildlife system exists.

Docs/MvpSurvivalReadinessCriteria.md

@@ -5,30 +5,36 @@ success, failure, and closed-test readiness.
 
 ## Day And Night
 
-MVP rule: day/night should mimic the real Earth region represented by the
-loaded map tile.
+MVP rule: day/night presentation should mimic the real Earth region represented
+by the loaded map tile, while the gameplay calendar uses the MVP pacing target
+of `4 real hours = 1 in-game day`.
 
-For Ground Zero, the server-authoritative world clock should follow the local
-time of the real Ground Zero region. Weather and sunlight should both come from
-the same real-world tile context so the player feels like they are standing in
-that place, not in an abstract accelerated map.
+For Ground Zero, weather and sunlight should come from the same real-world tile
+context so the player feels like they are standing in that place. The sky should
+respect the region's local time zone, sunrise/sunset shape, season, and weather
+direction as the system matures, but the MVP gameplay day is still compressed
+to four real hours so players can experience a full survival cycle in a
+reasonable test session.
 
 Implementation target:
 
 - The server owns time and replicates it to clients.
-- Ground Zero uses the real local time zone for its real-world coordinates.
+- The MVP gameplay calendar target is `4 real hours = 1 in-game day`.
+- Ground Zero day/night presentation uses the real local time zone and regional
+  solar/weather context for its real-world coordinates.
 - Sunrise, sunset, day length, night length, and seasonal light should be based
   on the tile location as the system matures.
-- The MVP fallback can use a 24-hour local clock with conservative fixed night
-  bounds until real sunrise/sunset lookup is implemented.
-- Time acceleration is allowed for test commands and automation, but not as the
-  default player-facing world clock.
+- The MVP fallback can use the accelerated 24-hour gameplay clock with
+  conservative fixed night bounds until real sunrise/sunset lookup is
+  implemented.
+- Additional time acceleration is allowed for test commands and automation, but
+  should not replace the default four-hour MVP day for normal playtests.
 
 Design consequence:
 
-- The sky clock stays grounded.
+- The sky stays regionally grounded even while the gameplay day is compressed.
 - Skills, tools, teamwork, shelter, storage, domestication, and infrastructure
-  improve what players can accomplish inside real time.
+  improve what players can accomplish inside the compressed gameplay calendar.
 - Natural biological systems should not be casually compressed just to make
   progress feel faster.
 

Source/AgrarianGame/AgrarianGameState.h

@@ -21,8 +21,8 @@ public:
 	UPROPERTY(EditAnywhere, BlueprintReadOnly, Replicated, Category = "Agrarian|World")
 	float WorldHours = 8.0f;
 
-	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Agrarian|World", meta = (ClampMin = "0.001"))
-	float GameHoursPerRealMinute = 1.0f / 60.0f;
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Agrarian|World", meta = (ClampMin = "0.1"))
+	float GameHoursPerRealMinute = 0.1f;
 
 	UPROPERTY(EditAnywhere, BlueprintReadOnly, ReplicatedUsing = OnRep_Weather, Category = "Agrarian|World")
 	EAgrarianWeatherType Weather = EAgrarianWeatherType::Clear;