[liugedragon]

Changes proposed in this pull request:

• Include the microsecond remainder when rounding precisedelta() to a minimum unit of minutes, hours or days.
• Add it only at the chosen unit's rounding step, including when suppression raises the effective minimum unit.
• Update the documented precision limitation and cover numeric/timedelta inputs, both signs, custom formats, suppressed units and rounding boundaries.

For example:

precisedelta(30.6, minimum_unit="minutes")
# Before: "0.50 minutes"
# After:  "0.51 minutes"

precisedelta(59.999999, minimum_unit="minutes")
# Before: "0.98 minutes"
# After:  "1 minute"

This intentionally improves an existing documented limitation. The old expectation for precisedelta(3630.99, minimum_unit="minutes", format="%.0f") changes from "1 hour" to "1 hour and 1 minute": the remaining 30.99 seconds is above half a minute. An exact 3630-second control preserves the half-even tie, and the existing 90.0001-second documentation example still produces "1.50 minutes".

Month/year decomposition and the default seconds/subsecond path retain their existing behavior. Related #436 addresses sub-day seconds for months/years; #500 addresses exact large integer microsecond counts.

Validation on Windows / Python 3.13.4:

• New cases before the change: 36 failed, 4 passed; after: 40 passed.
• Full suite plus source doctests: 932 passed, 2 skipped, with benchmark timing disabled. Catalogs were compiled with GNU msgfmt through the project's translation script; the two translation-update tests require xgettext in the Windows test process.
• Ruff 0.16.10, Black 26.10.0, mypy 2.4.0 (14 files), and git diff --check: passed.

[Ekko82]

I replayed the 40 added parameter combinations in a focused public-API harness on Windows/Python 3.13.9 at 0485b3d. All pass, along with 48 further calls covering one-microsecond steps at half-unit thresholds, %.12f, suppression, both signs and numeric/timedelta inputs. Against base d16e635, 36 of the original combinations and 32 of the additional calls fail.

For example, timedelta(seconds=3630, microseconds=1) now gives 1 hour and 1 minute with minimum_unit="minutes", format="%.0f", while the exact-half control remains 1 hour.

The full pytest suite, localization tests and lint were not run. The pytest file requires freezegun, which is unavailable in this environment.