fix(agents): only models that send progress updates read thinking as progress

src/beaver_gateway/agents/claude.py

@@ -17,7 +17,10 @@ from beaver_gateway.agents.policy import PolicyRule  # noqa: TC001
 from beaver_gateway.agents.prompts import PromptSource  # noqa: TC001
 from beaver_gateway.conversations.kinds import KINDS, Kind
 
-__all__ = ["ClaudeAgent", "ClaudeOptions", "Prompts", "SkillSets"]
+__all__ = ["PROGRESS_MODELS", "ClaudeAgent", "ClaudeOptions", "Prompts", "SkillSets"]
+
+PROGRESS_MODELS = frozenset({"claude-opus-5-5", "claude-fable-5-1"})
+"""Models whose non-empty thinking is the text written between tool calls."""
 
 
 class ClaudeOptions(BaseModel):
@@ -123,8 +126,9 @@ class ClaudeAgent(BaseAgent):
 
     @property
     def thinking_is_progress(self) -> bool:
-        """Reasoning arrives empty unless ``display`` is ``summarized``."""
+        """A progress model, unless ``display: summarized`` brings reasoning."""
-        return (self.options.thinking or {}).get("display") != "summarized"
+        summarized = (self.options.thinking or {}).get("display") == "summarized"
+        return self.model in PROGRESS_MODELS and not summarized
 
     def prompt_for(self, kind: Kind) -> tuple[PromptSource, ...] | None:
         return self.prompts.for_kind(kind)

tests/test_conversations.py

@@ -767,9 +767,28 @@ def test_read_conversation_keeps_progress_and_drops_reasoning() -> None:
     )
 
 
-def test_only_claude_agents_read_their_thinking_as_progress(tmp_path: Path) -> None:
+@pytest.mark.parametrize(
+    ("model", "expected"),
+    [
+        ("claude-opus-5-5", True),
+        ("claude-fable-5-1", True),
+        ("claude-opus-5", False),
+        ("claude-sonnet-5", False),
+        ("claude-haiku-4-5-20251001", False),
+        ("claude-next-unknown", False),
+    ],
+)
+def test_only_progress_models_read_their_thinking_as_progress(
+    tmp_path: Path, model: str, expected: bool
+) -> None:
+    assert (
+        ClaudeAgent(name="c", model=model, cwd=tmp_path).thinking_is_progress
+        is expected
+    )
+
+
+def test_summarized_display_and_raycast_are_never_progress(tmp_path: Path) -> None:
     raycast = RaycastAgent(name="r", model="google-gemini-3.1-pro", system_prompt="")
-    claude = ClaudeAgent(name="c", model="claude-opus-5-5", cwd=tmp_path)
     summarized = ClaudeAgent(
         name="s",
         model="claude-opus-5-5",
@@ -777,7 +796,6 @@ def test_only_claude_agents_read_their_thinking_as_progress(tmp_path: Path) -> N
         options=ClaudeOptions(thinking={"type": "adaptive", "display": "summarized"}),
     )
     assert not raycast.thinking_is_progress
-    assert claude.thinking_is_progress
     assert not summarized.thinking_is_progress