fix(deps): raise the rich floor the typer floor requires, and pin the floors before installing them wheel-only

[lesnik512]

This PR changes how the floors job installs, following CI6 of the standard (modern-python/.github#115). It first pins every declared floor with builds allowed (uv pip compile ... --resolution lowest-direct --no-deps), then installs those pins with --no-build, plus the dev group at newest.

uv sync --resolution lowest-direct --no-build doesn't fail on a floor that has no wheel for the interpreter. It skips that version and climbs to the lowest one that has a wheel, so the leg passes on a version this repo never declared. Pinning first makes the wheel-only install fail on the real floor instead. compose2pod#139 piloted this.

The comments claiming --no-build fails on a wheel-less floor are removed, since that claim was false. The dev-group comment is removed too: dev dependencies now install at newest, so their floors no longer need to give a usable harness under a lowest resolution.

[lesnik512]

Fixed in the second commit. typer>=0.13 requires rich>=10.11.0, so the declared rich>=10.2 could never be installed alongside it. The old lowest-direct job raised rich silently; exact pins surfaced it on every leg. The floor is now rich>=10.11.