docs: add info on farmers, tokenomics, spore, and more

docs/farming/overview.md

@@ -24,11 +24,30 @@ As a **ThreeFold Farmer**, you:
 - Self-healing Zero-OS handles operations
 - No complex system administration needed
 
-### 💰 Multiple Revenue Streams
+### 💰 Real Earning Potential
 
-- **Capacity Rewards** - Earn for available resources
-- **Utilization Rewards** - Earn when your capacity is used
-- **Growing Demand** - More workloads = more income potential
+As a farmer, you earn **SPORE tokens** for providing compute, storage, and network resources to the ThreeFold Grid.
+
+**Earning Potential by Node Type:**
+
+| **Node Type** | **Hardware Cost** | **Monthly Earning Range** | **Annual Potential** |
+|---------------|-------------------|---------------------------|---------------------|
+| **Mini 1** | $350 | 1,000–12,000 SPORE ($10–$120) | $120–$1,440 |
+| **Mini AI 1** | $2,000 | 5,000–60,000 SPORE ($50–$600) | $600–$7,200 |
+| **Nvidia 6000** | $15,000 | 39,000–450,000 SPORE ($390–$4,500) | $4,680–$54,000 |
+
+*SPORE price fixed at $0.01 until June 30, 2026*
+
+### How Revenue Works
+
+When users rent your node's resources, the payment is split:
+
+```mermaid
+graph LR
+    A[User Pays] --> B[80% to Farmer<br/>SPORE Tokens]
+    A --> C[10% Burned<br/>Increases SPORE Value]
+    A --> D[10% Mycelium<br/>Development]
+```
 
 ### 🌍 Make an Impact
 
@@ -36,6 +55,7 @@ As a **ThreeFold Farmer**, you:
 - Provide alternatives to centralized cloud providers
 - Contribute to digital sovereignty and data privacy
 - Build the peer-to-peer internet of the future
+- **Benefit from network growth** as SPORE becomes more valuable
 
 ## What You Need