fix: Establish Windows support test coverage

[beatenevo]

Feature description

Systematically test PowerContext on Windows and document the supported environment, test results, platform-specific failures,prerequisites, and remaining limitations. Fix clear cross-platform issues and add Windows CI coverage where appropriate.

Problem and proposed solution

Problem

Windows support has not been tested systematically. The project may work for the main SQLite and HTTP flows, but platform-specific issues can remain undetected, including path formatting differences, Windows symlink permissions, and behavior of native or database-related dependencies.

Without a documented Windows baseline, it is difficult to distinguish a real PowerContext bug from an environment limitation, and future changes may introduce regressions without being detected.

Proposed solution

Run the unit and end-to-end test suites on supported Windows and Python versions, record the initial failures, and classify each one.

Are you willing to contribute to this feature?

• Yes, I am willing to contribute code, docs, or design feedback.