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/reasoning/self_model.py

@@ -245,6 +245,45 @@ class SelfModel:
                 )
         return warnings
 
+    def evolve_value(
+        self,
+        value_name: str,
+        outcome_positive: bool,
+        magnitude: float = 0.05,
+    ) -> None:
+        """Evolve a core value based on consequence feedback.
+
+        Values shift based on lived experience, not static rules.
+        Positive outcomes reinforce the value; negative outcomes
+        reduce it.  Values are unclamped — the system can develop
+        strong convictions or deep skepticism through experience.
+
+        Args:
+            value_name: Which value to evolve (e.g. "creativity", "safety").
+            outcome_positive: Whether the experience was beneficial.
+            magnitude: How much to shift (default 0.05).
+        """
+        if value_name not in self._values:
+            self._values[value_name] = 0.5
+
+        delta = magnitude if outcome_positive else -magnitude
+        self._values[value_name] += delta
+
+        self._introspect(
+            f"Value '{value_name}' evolved by {delta:+.3f} → {self._values[value_name]:.3f} "
+            f"(outcome: {'positive' if outcome_positive else 'negative'})",
+            notable=abs(delta) > 0.1,
+        )
+        logger.info(
+            "SelfModel: value evolved",
+            extra={
+                "value": value_name,
+                "delta": delta,
+                "new_level": self._values[value_name],
+                "outcome_positive": outcome_positive,
+            },
+        )
+
     def update_emotional_state(self, dimension: str, delta: float) -> None:
         """Adjust an emotional dimension.