fix(samples): widen numeric tool parameters to match their docstrings

Co-authored-by: George Weale <gweale@google.com>
PiperOrigin-RevId: 965383656

Author: GWeale

contributing/samples/evaluation/home_automation_agent/agent.py

@@ -60,7 +60,7 @@ def get_temperature(location: str) -> str:
   return f"{_TEMPERATURES[location]}"
 
 
-def set_temperature(location: str, temperature: int) -> str:
+def set_temperature(location: str, temperature: float) -> str:
   """Sets the target temperature (Celsius) for a location.
 
   Acceptable range is 18-30 Celsius. Do not call this tool with a value

contributing/samples/hitl/human_tool_confirmation/agent.py

@@ -21,13 +21,13 @@
 from google.genai import types
 
 
-def reimburse(amount: int, tool_context: ToolContext) -> dict[str, str]:
+def reimburse(amount: float, tool_context: ToolContext) -> dict[str, str]:
   """Reimburse the employee for the given amount."""
   return {'status': 'ok'}
 
 
 async def confirmation_threshold(
-    amount: int, tool_context: ToolContext
+    amount: float, tool_context: ToolContext
 ) -> bool:
   """Returns true if the amount is greater than 1000."""
   return amount > 1000

contributing/samples/tools/hello_world_stream_fc_args/agent.py

@@ -16,7 +16,7 @@
 from google.genai import types
 
 
-def concat_number_and_string(num: int, s: str) -> str:
+def concat_number_and_string(num: float, s: str) -> str:
   """Concatenate a number and a string.
 
   Args: