docs: update Gateway Guardian reference to v3

Update architecture diagram to reflect Everclaw Gateway Guardian v3:
- v3 adds circuit breaker for stuck sub-agents
- Tests full inference stack through OpenClaw agent probes
- Catches auth profile failures, not just process crashes

Author: profbernardoj

README.md

@@ -88,7 +88,7 @@ SmartAgent
 ├── Everclaw (decentralized inference)
 │   ├── Morpheus API Gateway (open access, cloud)
 │   ├── Morpheus P2P Proxy (local, staked MOR)
-│   └── Gateway Guardian (self-healing watchdog)
+│   └── Gateway Guardian v3 (self-healing watchdog with circuit breaker)
 └── SmartAgent Config
     ├── SOUL.md (agent personality)
     ├── AGENTS.md (workspace conventions)

docs/index.html

@@ -515,7 +515,7 @@ <h2>Under the Hood</h2>
 ├── <span class="hl3">Everclaw</span> <span style="color: var(--text-muted);">(decentralized inference)</span>
 │   ├── Morpheus API Gateway <span style="color: var(--text-muted);">— open access, cloud</span>
 │   ├── Morpheus P2P Proxy <span style="color: var(--text-muted);">— local, staked MOR</span>
-│   └── Gateway Guardian <span style="color: var(--text-muted);">— self-healing watchdog</span>
+│   └── Gateway Guardian v3 <span style="color: var(--text-muted);">— self-healing watchdog with circuit breaker</span>
 └── <span class="hl">SmartAgent Config</span>
     ├── SOUL.md <span style="color: var(--text-muted);">— agent personality</span>
     ├── AGENTS.md <span style="color: var(--text-muted);">— workspace conventions</span>