feat(ci): port status visibility and consistent component recursion

[Chaffelson]

Summary

• get_status now reports input/output port counts (total, running, stopped, invalid) and derives processor counts from enumeration rather than the PG aggregate component count — so invalid ports are no longer mis-reported as invalid processors.
• New canvas.list_invalid_ports (parallel to list_invalid_processors) returning ports with validation errors across a PG and its descendants.
• verify_config gains a verify_ports option (default True) and a new port_results key; ports with validation errors now fail verification.
• verify_config controller verification now recurses into descendant PGs (descendants=True), consistent with processor/port verification, while still excluding ancestor-inherited services.

Motivation

Invalid ports (e.g. an output port with no outgoing connection) cause FlowFiles to queue indefinitely with no error, no bulletin, and — previously — no visibility in get_status or verify_config. This makes that state visible and reported consistently across component types.

Behaviour change

• get_status invalid_processors/running_processors values are now processor-accurate (previously included all component types). New *_input_ports / *_output_ports fields are additive.
• verify_config now fails when a controller in a descendant PG is invalid, where it previously only checked the target PG.

Test plan

• make test NIPYAPI_PROFILE=single-user — full suite green (port/processor/controller paths; 21 git-registry errors are unrelated, require GH_REGISTRY_TOKEN)
• New tests: test_list_invalid_ports, test_verify_config_with_invalid_port, test_get_status_port_counts, test_verify_config_includes_descendant_controllers
• make pre-commit clean
• Verified against a live runtime with a known-bad flow (3 unconnected output ports surfaced correctly)

.... Generated with Cortex Code

[codecov]

Codecov Report

❌ Patch coverage is 94.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.93%. Comparing base (0bd2d46) to head (7bedd53).

Files with missing lines	Patch %	Lines
nipyapi/ci/verify_config.py	85.71%	2 Missing ⚠️
nipyapi/ci/get_status.py	96.29%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #409      +/-   ##
==========================================
+ Coverage   76.84%   76.93%   +0.09%     
==========================================
  Files          41       41              
  Lines        4832     4869      +37     
==========================================
+ Hits         3713     3746      +33     
- Misses       1119     1123       +4     

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