chore: note overlapping Process/Make production chains in skills doc

docs/game-design/skills.md

@@ -73,6 +73,8 @@ Layout mirrors **[gigs.md](gigs.md) gig roster**: one **table per category**, **
 
 #### Process — turn raw into workable intermediate
 
+**Overlapping chains:** **Process** and **Make** are not isolated trees. **Different** skills (or different recipes under one skill) can consume the **same** items and yield **different** intermediates or products—e.g. the same gathered or refined feedstock feeding **Refine**, **Synth-chem prep**, or **Bioprocess** paths with **different outputs**. Data-defined recipes carry the truth; overlap is **intentional** for a dense, interconnected economy.
+
 | Skill | What it covers | Open / merge |
 |-------|----------------|--------------|
 | **Refine** | Smelt, purify, reduce ore and scrap to usable grades. | Merge vs **Synth-chem prep**? **open** |
@@ -109,6 +111,7 @@ Layout mirrors **[gigs.md](gigs.md) gig roster**: one **table per category**, **
 
 **Cross-cutting notes**
 
+- **Overlapping production chains:** **Agreed**—shared **inputs** across **Process** / **Make** with **different outputs**; recipe UX and balance **open** (paragraph under **Process** in [Skill roster](#skill-roster-draft-ideas-by-category)).
 - **Merge candidates:** e.g. **Refine** + **Synth-chem prep** vs split by fantasy. **Salvage** vs **Quarry** split (**consumer goods / vehicles** vs **urban infrastructure** materials) — **agreed**.
 - **Cut / defer:** **Food synth** if not a loop.
 - **Next pass:** pick **prototype trio** (one Gather, one Process/Make, one Tech) for Epic 2/3 slices—align with decomposition when ready.