fix(lib): resolve B-8 send_keys_safe agy verification bypass and add submission retry test

.agents/skills/lib_py/agents/base.py

@@ -27,6 +27,18 @@ class BaseAgentAdapter:
     def own_key(self) -> str:
         raise NotImplementedError
 
+    @property
+    def input_prompt(self) -> Optional[str]:
+        return None
+
+    @property
+    def input_placeholder(self) -> Optional[str]:
+        return None
+
+    @property
+    def input_rule_pattern(self) -> Optional[str]:
+        return None
+
     def derive_session_name(self, slug: str, role: str = "creator") -> str:
         r = role.lower()
         return f"{slug}-{r}-{self.name}"