Oleksandr Pavlyk 5fd21dd7fa Load script tooling dependencies lazily ...

Add a shared nvbench_tooling_deps helper for importing packages required
by NVBench console tools. Missing tooling packages now raise a dedicated
error with an install recipe instead of failing with a raw ImportError.

Update script imports to work both as installed package modules and as
direct source-tree scripts by using the __package__ import pattern for
nvbench_json and the new tooling helper.

Defer nvbench-compare dependencies to the points where they are needed:
NumPy/colorama during normal comparison setup, tabulate during table
rendering, jsondiff only for device mismatch reporting, and plotting
packages only for plot modes.

Update tests to initialize compare tooling when calling internals
directly and add coverage for the tooling dependency loader.

Closes #384

2026-06-30 06:40:45 -05:00

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