feat(agent): add odoo review mode with plausibility verdict

agent/config.py

@@ -99,6 +99,10 @@ class Config:
     audit_stdout: bool = False
     audit_retention_days: int = 30
 
+    # M4.2: Odoo-Review-Modus (schema-gebundener Kontext, Plausibilitaets-Verdict).
+    # Feature-Flag: erst mit Odoo-Freigabe aktivieren; default bleibt knowledge-only.
+    review_mode: bool = False
+
     @classmethod
     def from_env(cls) -> Config:
         d = cls()
@@ -140,4 +144,5 @@ class Config:
             audit_retention_days=_env_int(
                 "PV_AUDIT_RETENTION_DAYS", d.audit_retention_days
             ),
+            review_mode=_env_bool("PV_REVIEW_MODE", d.review_mode),
         )