fix(update): ignore Windows system venv holder noise

[yungchentang]

Summary

• Ignore Windows pseudo/system processes when checking live venv Python holders during update.
• Keep user-space Python/Hermes trampoline detection intact.

Root Cause

• _detect_venv_python_processes() treated noisy Windows system process cwd/cmdline metadata as proof of a Hermes venv holder, even when the executable was a system process.

Tests

• python -m pytest tests/hermes_cli/test_update_venv_health.py -q
• python -m py_compile hermes_cli/main.py tests/hermes_cli/test_update_venv_health.py
• git diff --check

Fixes #57829

[teknium1]

Thanks for the focused Windows update fix. Current main still promotes any process whose cmdline contains the venv path (hermes_cli/main.py:9082) or whose hermes_cli.main invocation has a cwd under the install root (hermes_cli/main.py:9084-9086), matching the failure mode reported in #57829. The PR filters the reported system-process class before those fallbacks and its added test retains detection of the user-space Python trampoline.

Automated hermes-sweeper review.

[yungchentang]

Rebased the original focused fix onto current main (1f89f3102f) and force-pushed the PR branch as 50ea329ab4. The implementation still filters the Windows system-process class before the venv/cwd fallbacks, while retaining the user-space Python trampoline regression.

Verification:

• scripts/run_tests.sh tests/hermes_cli/test_update_venv_health.py -q — 19 passed
• git diff --check origin/main...HEAD — clean