Additional unit test pack

[AgentDosaku]

What changed

This PR contains only unit test changes (no production/library code changes), with targeted coverage improvements focused on low-coverage files, especially hardware.

Newly added/expanded tests in this update

• tests/unit/mindtrace/hardware/cameras/homography/test_data.py (new)
• tests/unit/mindtrace/hardware/core/test_utils.py (new)
• tests/unit/mindtrace/hardware/sensors/backends/test_base.py (new)
• tests/unit/mindtrace/hardware/cameras/homography/test_calibration.py
• tests/unit/mindtrace/hardware/cameras/homography/test_measurement.py
• tests/unit/mindtrace/hardware/sensors/backends/test_mqtt.py
• tests/unit/mindtrace/hardware/sensors/services/test_connection_manager.py
• tests/unit/mindtrace/cluster/test_run_script_worker.py
• tests/unit/mindtrace/services/core/test_mcp_client_manager.py
• tests/unit/mindtrace/registry/core/test_registry_core_types.py (new)

Highlights

• Added meaningful coverage for homography calibration/data/measuring flows (including multi-view path, serialization roundtrip, and distance APIs).
• Added sensor backend base/mqtt/connection manager edge-path coverage.
• Added run script worker Docker GCP-volume mapping coverage.
• Added MCP descriptor behavior assertions and registry core types.py behavior tests.

Coverage (targeted files)

File	Before	After	Delta
mindtrace/cluster/workers/run_script_worker.py	96.67%	100.00%	+3.33%
mindtrace/hardware/cameras/homography/calibrator.py	65.71%	89.71%	+24.00%
mindtrace/hardware/cameras/homography/data.py	50.00%	100.00%	+50.00%
mindtrace/hardware/cameras/homography/measurer.py	80.82%	98.63%	+17.81%
mindtrace/hardware/core/utils.py	77.78%	94.44%	+16.66%
mindtrace/hardware/sensors/backends/base.py	73.33%	100.00%	+26.67%
mindtrace/hardware/sensors/backends/mqtt.py	84.68%	94.59%	+9.91%
mindtrace/hardware/services/sensors/connection_manager.py	97.22%	100.00%	+2.78%
mindtrace/registry/core/types.py	83.55%	90.79%	+7.24%
mindtrace/services/core/mcp_client_manager.py	95.00%	100.00%	+5.00%

Validation commands run

• ruff check . (fails on existing baseline import-order issues in docker env tests/modules; unchanged by this update)
• ruff format --check . (fails on existing baseline formatting files; unchanged by this update)
• ds test --unit (same known baseline: 3 failed, 2 errors, docker-daemon-dependent tests)

Notes

• Existing unrelated baseline failures are unchanged in nature (Docker daemon unavailable in this environment).
• No library code changes were made.

Test-count statistic (corrected)

• Added 55 net new test cases (def test_*) across 15 new test files (22 test files touched total).

[AgentDosaku]

Rollout update: pushed 2 additional unit-test commits focused on targeted low-coverage modules (especially hardware) with no production code changes.

Included in this pass:

• homography: calibrator/data/measurer expansions
• sensors: backend base/mqtt + connection manager edge paths
• core/cluster/registry: run_script_worker, mcp_client_manager, registry core types

Validation run in this environment:

• ruff check . (baseline fails unchanged)
• ruff format --check . (baseline fails unchanged)
• ds test --unit (same known baseline: 3 failed, 2 errors; docker-daemon dependent)

Notable remaining lower-coverage targeted files after this pass:

• registry/core/registry.py (70.61%)
• services/core/launcher.py (75.51%)
• registry/backends/s3_registry_backend.py (75.60%)
• registry/backends/gcp_registry_backend.py (76.20%)
• cluster/core/cluster.py (88.08%)

Coverage table in PR description has been refreshed for all targeted files.