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@@ -276,4 +276,15 @@ What we're building: game concept, design pillars, prototype definition, map spe
 
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-*24 decisions (15 active, 9 superseded). Last updated: 2026-03-05 (D-114–D-120 added; D-014, D-027, D-039, D-065, D-087, D-089, D-091 superseded — Where's the Fun? Workshop)*
+---
+
+### D-145: Base building DLC — GJ 902 unclaimed moon as player settlement site
+- **Date:** 2026-03-15
+- **Decision:** The unsettled system GJ 902 (south_reach, hop 7, K-type dead-end) contains a habitable moon with an iron core orbiting a gas giant. This is deliberately left unclaimed as prep for a future base building DLC where players could claim and settle it. The marginally habitable planet in the same system provides contrast; the moon is the prize.
+- **Rationale:** Having a genuinely good piece of unclaimed real estate in the star map gives the base building DLC a natural entry point with existing lore context. The dead-end topology and quiet corridor explain why nobody has claimed it yet.
+- **Source:** Wiki writing session, 2026-03-15
+- **Raised by:** Jeroen
+
+---
+
+*25 decisions (16 active, 9 superseded). Last updated: 2026-03-15 (D-145 added)*