Add craft fire QA gate

Docs/QA/MvpQaGates.md

@@ -90,3 +90,21 @@ Required evidence:
 
 This gate is gameplay/server-relevant and should be covered by the next server
 package deployment.
+
+## Craft Fire
+
+The craft-fire gate proves the MVP can produce or use a campfire through the
+crafting/building loop, then interact with that fire in the world.
+
+Required evidence:
+
+- `DA_Recipe_Campfire` exists with the `campfire` recipe ID.
+- The campfire item/buildable path is available to the player blueprint setup.
+- `BP_Campfire` derives from `AAgrarianCampfire`.
+- `AAgrarianCampfire` supports `Light fire` and `Maintain fire` interaction
+  prompts.
+- Campfire lit/fuel state is replicated.
+- Campfire persistence and fire-risk QA verifiers pass.
+
+This gate is gameplay/server-relevant and should be covered by the next server
+package deployment.