core/agent: drop increase-limit hint in favor of truncate tokens

src/plyngent/agent/budget.py

@@ -50,7 +50,7 @@ def truncate_tool_result(
         return (
             f"{text[:max_chars]}\n"
             f"...[Truncated ({max_chars} chars max.; {omitted} chars omitted). "
-            f"You may ask for user to increase the limit via configuration file.]"
+            f"Use `get_truncated` when a `TRUNCATE_TOKEN` is shown.]"
         )
     return f"{text[:max_chars]}\n...[truncated {omitted} characters]"
 

tests/test_agent/test_budget.py

@@ -15,7 +15,8 @@ def test_truncate_tool_result_long() -> None:
     assert "Truncated" in out
     assert "20" in out
     assert "30" in out
-    assert "configuration file" in out
+    assert "get_truncated" in out
+    assert "configuration file" not in out
 
 
 def test_truncate_tool_result_no_hint() -> None:
@@ -23,7 +24,7 @@ def test_truncate_tool_result_no_hint() -> None:
     out = truncate_tool_result(text, 20, hint=False)
     assert out.startswith("a" * 20)
     assert "truncated" in out
-    assert "configuration file" not in out
+    assert "get_truncated" not in out
 
 
 def test_estimate_message_chars() -> None:

tests/test_agent/test_compact.py

@@ -44,7 +44,8 @@ def test_truncate_tool_result_long() -> None:
     assert "Truncated" in out
     assert "20" in out
     assert "30" in out
-    assert "configuration file" in out
+    assert "get_truncated" in out
+    assert "configuration file" not in out
 
 
 def test_truncate_tool_result_no_hint() -> None:
@@ -52,7 +53,7 @@ def test_truncate_tool_result_no_hint() -> None:
     out = truncate_tool_result(text, 20, hint=False)
     assert out.startswith("a" * 20)
     assert "truncated" in out
-    assert "configuration file" not in out
+    assert "get_truncated" not in out
 
 
 def test_compact_shrinks_old_tool_results() -> None: