[BUG] Resolve tools from file failing on Windows

[galuszkm]

Checks

• I have updated to the latest version of strands-compose
• I have checked the documentation and this is not expected behavior
• I have searched ./issues and there are no duplicates of my issue

strands-compose Version

0.1.1

strands-agents Version

1.33.0

Python Version

3.13.8

Operating System

Windows 11

Installation Method

uv

Relevant YAML Config

models:
  default:
    provider: bedrock
    model_id: openai.gpt-oss-20b-1:0

x-system_prompt: &system_prompt |
  You are a text analysis assistant.
  You have tools to count words, count characters, extract sentences,
  and reverse word order in text.
  Always use your tools when analysing text — never estimate by eye.
  Report results clearly with the exact numbers from the tool output.

agents:
  analyst:
    model: default
    tools:
      - ./tools.py
    system_prompt: *system_prompt

entry: analyst

Steps to Reproduce

Run example: 03_tools

Expected Behavior

Tools should be loaded similar to linux runtime

Actual Behavior

ModuleNotFoundError: No module named 'C'

Additional Context

No response

Possible Solution

No response

Related Issues

No response