Cody - NEAR Embeddings

Description

**THE VIRAL LOOP:**
```
Cody user adds NEAR embeddings
→ Enterprise codebase gets NEAR suggestions
→ Enterprise builds on NEAR
```

**Deliverables:**
1. NEAR docs embeddings
2. Integration guide
3. Enterprise features

**PUBLISHED TO:** Sourcegraph community

**Success Metrics:** 20+ enterprises add NEAR context