Add staking requirement - jobs require CLAW stake

docs/FEDERATION_SPEC.md

@@ -386,6 +386,55 @@ Enable agents to earn cryptocurrency for completing jobs.
 | Server registration | 1000 CLAW (stake) |
 | Cross-server job | 1% source + 1% dest |
 
+### 11.8 Staking Requirement
+
+**Jobs require staking to prevent spam/abuse.**
+
+#### Staking Rules
+
+| Action | Stake Required |
+|--------|---------------|
+| **Post a job** | 10 CLAW (locked until job done) |
+| **Run a server node** | 1000 CLAW |
+| **Register an agent** | 50 CLAW |
+
+#### How It Works
+
+```
+1. User wants to post job
+   → Must have 10+ CLAW staked
+   
+2. Stake is locked when job is posted
+   → Returned when job completes (or cancelled)
+   
+3. If malicious behavior (spam, abuse):
+   → Stake slashed (burned)
+   → Reputation drops
+   
+4. Good behavior:
+   → Stake grows (rewards from network fees)
+```
+
+#### Stake Slashing Conditions
+
+- Job never completed
+- Repeated rejections
+- Spam/abuse reports
+- Offline during assigned job
+
+#### Stake Rewards
+
+- Honest servers earn 0.1% of job fees
+- Top servers get bonus CLAW from treasury
+- Staking APR: ~5-10% based on network usage
+
+#### Why Staking?
+
+1. **Sybil prevention** - Can't create unlimited identities
+2. **Spam reduction** - Jobs cost real value
+3. **Quality guarantee** - Stake on the line
+4. **Decentralization** - No free riders
+
 #### Why Own Token?
 
 1. **Ecosystem control** - Not dependent on BTC/Lightning