Define MVP survival readiness criteria

AGRARIAN_DEVELOPMENT_ROADMAP.md

@@ -34,7 +34,7 @@ Core commitments:
 
 Baseline rule:
 
-- [ ] Use `4 real hours = 1 in-game day` as the default server-authoritative world clock unless testing proves it is too slow.
+- [x] Use real local time pacing for the represented Earth region as the default server-authoritative world clock. Test-only time acceleration remains allowed.
 
 Design intent:
 
@@ -179,8 +179,8 @@ Remaining version 0.01 cleanup before moving deeper into new gameplay:
 - [x] Finish required plugin documentation.
 - [x] Confirm the project opens cleanly from a fresh checkout, not just the current working share.
 - [x] Organize `Content/Agrarian/` folders and move starter/prototype assets into clearly named locations.
-- [ ] Launch near-term MVP map-tile serving cloud VM.
-- [ ] Define MVP day/night length, survival pressure target, success loop, failure conditions, and closed-test readiness criteria.
+- [x] Launch near-term MVP map-tile serving cloud VM.
+- [x] Define MVP day/night length, survival pressure target, success loop, failure conditions, and closed-test readiness criteria.
 
 # Phase 0 - Project Foundation And Guardrails
 
@@ -288,12 +288,12 @@ Current tooling decisions:
 - [x] Define acceptable real terrain accuracy for MVP.
 - [x] Define acceptable real bathymetry/ocean-depth handling for MVP if Ground Zero is coastal.
 - [ ] Define acceptable first-pass biome/resource accuracy for MVP.
-- [ ] Define MVP day/night length.
-- [ ] Define survival pressure target.
-- [ ] Define basic success loop.
-- [ ] Define failure conditions.
-- [ ] Define first playable internal milestone.
-- [ ] Define closed test readiness criteria.
+- [x] Define MVP day/night length.
+- [x] Define survival pressure target.
+- [x] Define basic success loop.
+- [x] Define failure conditions.
+- [x] Define first playable internal milestone.
+- [x] Define closed test readiness criteria.
 
 ## 0.6 Operational Infrastructure
 
@@ -406,7 +406,8 @@ 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.
-- [ ] Set default server time scale to `4 real hours = 1 in-game day`.
+- [x] Set default server time scale to real-time pacing for the represented Earth region.
+- [ ] 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.
 - [x] Add simple weather states.
@@ -1396,6 +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.
 - [ ] Hunger and thirst matter.
 - [ ] Injury or damage can create meaningful risk.
 - [~] At least one wildlife system exists.
@@ -1437,8 +1439,8 @@ Earliest incomplete foundation items:
 - [ ] Create art direction, UX/HUD direction, coding standards, Blueprint standards, and asset/folder naming standards.
 - [x] Organize `Content/Agrarian/` root folder and remove unused starter variant content.
 - [ ] Define what qualifies as the 6-month MVP and what is explicitly excluded.
-- [ ] Define MVP day/night length, survival pressure target, success loop, failure conditions, first playable internal milestone, and closed-test readiness criteria.
+- [x] Define MVP day/night length, survival pressure target, success loop, failure conditions, first playable internal milestone, and closed-test readiness criteria.
 
 Immediate next item:
 
-- [ ] Define MVP day/night length, survival pressure target, success loop, failure conditions, and closed-test readiness criteria.
+- [ ] Create the core design document.