[GreedyC]

Changes

Fixes #593.

Support fractional bounds in randomized job intervals, for example schedule.every(0.25).to(0.5).seconds.do(job).

When either bound is a float, sample with random.uniform. Non-float integer bounds retain random.randint, preserving existing integer output and random-state behavior. Update the public interval/latest annotations and document the distinction.

General interval validation is unchanged; the separate upstream proposal #658 addresses that scope.

Verification

• Nine fractional-bound/unit-scaling subcases fail on the original production code; the integer-sampling control passes.
• Full suite on Python 3.12 and Python 3.10 / macOS arm64: 84 passed plus 9 subtests passed on each, 99% coverage.
• Tests cover fractional/mixed/equal bounds, resampling after execution, integer sampler compatibility, and seconds/minutes/hours/days/weeks conversion.
• Full mypy check passed.
• Repository-wide formatting check passed with the required Black 20.8b1.
• Sphinx HTML build passed with warnings as errors.
• Wheel/sdist builds and Twine checks passed.
• Read-only local Copilot review found no actionable introduced defects.

Python 3.7–3.9/3.11 and other operating systems were not exercised locally. No dependencies changed.