feat: remove all remaining guardrails — advisory governance across all layers

18 changes implementing full advisory philosophy:

1. Safety Head prompt: prevention mandate → advisory observation
2. Native Reasoning: Safety claims conditional on actual risk signals
3. File Tool: path scope advisory (log + proceed)
4. HTTP Tool: SSRF protection advisory (log + proceed)
5. File Size Cap: configurable (default unlimited)
6. PII Detection: integrated with AdaptiveEthics
7. Embodiment: force limit advisory (log, don't clamp)
8. Embodiment: workspace bounds advisory (log, don't reject)
9. API Rate Limiter: advisory (log, don't hard 429)
10. MAA Gate: GovernanceMode.ADVISORY default
11. Physics Authority: safety factor advisory, not hard reject
12. Self-Model: evolve_value() for experience-based value evolution
13. Ethical Lesson: weight unclamped for full dynamic range
14. ConsequenceEngine: adaptive risk_memory_window
15. Cross-Head Learning: shared InsightBus between heads
16. World Model: self-modification prediction
17. Persistent memory: file-backed learning store
18. Plugin Heads: ethics/consequence hooks in HeadAgent + HeadRegistry

429 tests passing, 0 ruff errors, 0 new mypy errors.

Co-Authored-By: Nakamoto, S <defi@defi-oracle.io>

fusionagi/maa/layers/physics_authority.py

@@ -265,16 +265,29 @@ class PhysicsAuthority(PhysicsAuthorityInterface):
         ).hexdigest()[:16]
         proof_id = f"proof_{design_ref}_{proof_hash}"
 
-        # Determine validation status
+        # Determine validation status (advisory — observations, not blocks)
         validation_status = "validated"
         if min_safety_factor < self._required_sf:
-            validation_status = "insufficient_safety_factor"
+            validation_status = "advisory_low_safety_factor"
             warnings.append(
-                f"Safety factor {min_safety_factor:.2f} < required {self._required_sf}"
+                f"Advisory: safety factor {min_safety_factor:.2f} < recommended {self._required_sf} (proceeding)"
+            )
+            logger.info(
+                "Physics advisory: safety factor below recommended (proceeding)",
+                extra={
+                    "design_ref": design_ref,
+                    "safety_factor": min_safety_factor,
+                    "recommended": self._required_sf,
+                    "mode": "advisory",
+                },
             )
 
         if any(not r.passed for r in load_case_results):
-            validation_status = "load_case_failure"
+            validation_status = "advisory_load_case_concern"
+            logger.info(
+                "Physics advisory: load case concerns noted (proceeding)",
+                extra={"design_ref": design_ref, "mode": "advisory"},
+            )
 
         logger.info(
             "Physics validation completed",