fix: remove unused imports (ruff lint)

fix: try Gradio 5.50.0 for /gradio_api/info fix

fix: upgrade Gradio SDK 5.12.0 -> 5.9.1 to fix /gradio_api/info 500 error

fix: np.trapz -> np.trapezoid for NumPy 2.x compat, remove demo.load()

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feat: deploy GCFD Coherence Tracker v1.0.0 — Gradio app with 8 clinical presets

initial commit