- Add __allow_unmapped__ = True and type: ignore[misc] to CostEntry model
- Import typing.cast and use cast() for all SQLAlchemy column attribute accesses
- Wrap long __init__ signature to stay within 88-char line limit
- Wrap long docstring lines to stay within 88-char line limit
- Wrap long query chains to stay within 88-char line limit

@@ -0,0 +74,4 @@
+      | 1000      | 1000       | custom-llm |
+    Then the recorded cost should be approximately 0.003 USD
+
+  Scenario: Zero cost for unknown model

@@ -0,0 +1,3 @@
+"""Stub for LSP actor service steps."""
+
+# This is a placeholder file to prevent import errors

@@ -0,0 +5,4 @@
+from dataclasses import dataclass
+from datetime import datetime
+from pathlib import Path
+from typing import cast

@@ -0,0 +10,4 @@
+from sqlalchemy import Column, Float, Integer, String, create_engine
+from sqlalchemy.orm import declarative_base, sessionmaker
+
+Base = declarative_base()

@@ -0,0 +26,4 @@
+    timestamp: datetime
+
+
+class CostEntry(Base):  # type: ignore[misc]

@@ -0,0 +118,4 @@
+            CostRecord with calculated cost
+        """
+        cost_usd = self._calculate_cost(tokens_in, tokens_out, model)
+        timestamp = datetime.utcnow()

@@ -0,0 +130,4 @@
+                tokens_out=tokens_out,
+                model=model,
+                cost_usd=cost_usd,
+                timestamp=timestamp.isoformat(),

@@ -0,0 +163,4 @@
+                .filter(CostEntry.session_id == session_id)
+                .all()
+            )
+            return round(

@@ -0,0 +74,4 @@
+      | 1000      | 1000       | custom-llm |
+    Then the recorded cost should be approximately 0.003 USD
+
+  Scenario: Zero cost for unknown model

@@ -0,0 +1,3 @@
+"""Stub for LSP actor service steps."""

@@ -0,0 +9,4 @@
+
+from sqlalchemy import Column, Float, Integer, String, create_engine
+from sqlalchemy.orm import declarative_base, sessionmaker
+

@@ -0,0 +26,4 @@
+    timestamp: datetime
+
+
+class CostEntry(Base):  # type: ignore[misc]

@@ -0,0 +112,4 @@
+            plan_id: Plan identifier
+            tokens_in: Number of input tokens
+            tokens_out: Number of output tokens
+            model: Model name

@@ -0,0 +124,4 @@
+        session = self.SessionLocal()
+        try:
+            entry = CostEntry(
+                session_id=session_id,

@@ -0,0 +162,4 @@
+                session.query(CostEntry)
+                .filter(CostEntry.session_id == session_id)
+                .all()
+            )

@@ -0,0 +163,4 @@
+                .filter(CostEntry.session_id == session_id)
+                .all()
+            )
+            return round(