Updates the default TCP port throughout the codebase to match the
documentation changes made in the previous commit.
Changes:
- config.py: Update TCP port validator default (line 136)
- config.py: Update environment variable fallback default (line 255)
- test_config.py: Update test assertions (lines 117, 145)
- test_bridge.py: Update test assertion and fixture (lines 23, 63)
- test_command_forwarding.py: Update test fixture (line 20)
- test_rate_limiting.py: Update test fixtures (lines 22, 37)
Co-authored-by: JingleManSweep <jinglemansweep@users.noreply.github.com>
