docs: Add RecursiveMAS guide for standalone agents

- Config examples for explore, librarian, oracle, hephaestus, metis, momus, multimodal-looker
- RecursiveMAS is already in OpenSIN-Code runtime (PR #1123 MERGED)
- Agents automatically inherit RecursiveMAS when using the runtime
- Enable via recursiveMas config in agent settings

Part of Phase 2 (Standalone Agents) RecursiveMAS rollout

Author: SIN-Agent

docs/guides/standalone-agents-recursivemas.md

@@ -0,0 +1,88 @@
+# RecursiveMAS for Standalone Agents
+
+> Configure RecursiveMAS for explore, librarian, oracle, and other standalone agents.
+
+## Overview
+
+RecursiveMAS is integrated into **OpenSIN-Code runtime** (PR #1123 MERGED). All standalone agents using this runtime automatically inherit RecursiveMAS.
+
+## Configuration for Standalone Agents
+
+Since standalone agents (explore, librarian, etc.) use the OpenSIN-Code CLI runtime, they just need to enable RecursiveMAS in their config.
+
+### Explore Agent (explore)
+
+Explore agent uses `nvidia-nim/stepfun-ai/step-3.5-flash`. Add RecursiveMAS to its config:
+
+```json
+{
+  "recursiveMas": {
+    "enabled": true,
+    "topology": "chain",
+    "latentDim": 64,
+    "cliPath": "recursivemas",
+    "logTraces": true
+  }
+}
+```
+
+### Librarian Agent (librarian)
+
+Librarian agent also uses `nvidia-nim/stepfun-ai/step-3.5-flash`:
+
+```json
+{
+  "recursiveMas": {
+    "enabled": true,
+    "topology": "star",
+    "latentDim": 128,
+    "cliPath": "/usr/local/bin/recursivemas",
+    "logTraces": true
+  }
+}
+```
+
+### Oracle Agent (oracle)
+
+```json
+{
+  "recursiveMas": {
+    "enabled": true,
+    "topology": "chain",
+    "latentDim": 64
+  }
+}
+```
+
+### Hephaestus, Metis, Momus, Multimodal-Looker
+
+Same pattern — add `recursiveMas` config to each agent's settings.
+
+## Testing RecursiveMAS with Standalone Agents
+
+Since these agents use the OpenSIN-Code runtime, tests should verify RecursiveMAS works when the agent runs:
+
+```bash
+# Test that RecursiveMAS monitor is active when agent uses runtime with RecursiveMasConfig
+python3 -m pytest opensin_core/tests/test_agent_loop.py -v
+```
+
+Expected: All 22 tests pass (including RecursiveMAS tests).
+
+## SOTA Compliance Checklist (Per Agent)
+
+- [x] Opt-in feature flag (enabled: false by default in runtime)
+- [x] Clean integration (RecursiveMAS in OpenSIN-Code runtime)
+- [ ] Tests (verify RecursiveMAS works with each agent type)
+- [ ] Documentation (config examples + usage guides)
+- [ ] Issue closed (only after 100% complete)
+
+## Related
+
+- OpenSIN-Code PR: https://github.com/OpenSIN-Code/OpenSIN-Code/pull/1123
+- RecursiveMAS Runtime Integration: `opensin-engine/crates/runtime/src/recursive_mas.rs`
+- SIN-Zeus RecursiveMAS: `opensin_core/recursive_mas.py`
+- Plan File: `docs/plans/plan-a2a-fleet-recursivemas-rollout.md`
+
+---
+*CEO mandate: No agent closes before 100% SOTA RecursiveMAS implementation, tests, and docs!*