Rename the misspelled BuildOptions check_for_cyces keyword

[ESultanik]

Closes #157

BuildOptions.__init__ advertised a keyword named check_for_cyces but assigned it to the correctly spelled check_for_cycles attribute, so the signature disagreed with the attribute docstrings, the API docs, and docs/library.rst. Callers passing the documented check_for_cycles=False worked only by accident: the **kwargs catch-all set the unrecognized name as an attribute, and that loop ran after the misspelled parameter had already been assigned, so it happened to overwrite the same attribute.

This renames the parameter to check_for_cycles and keeps check_for_cyces as a deprecated alias:

• The alias is popped out of kwargs before the catch-all runs, so it no longer leaves a misspelled junk attribute behind.
• Using it raises a DeprecationWarning naming the new spelling.
• Passing both spellings raises a TypeError instead of silently choosing one. Without this, a mistake would be invisible, because BuildOptions.__getattr__ returns False for any attribute that was never set.

Nothing in this repository passes either spelling, so the alias exists only for out-of-tree callers. It can be removed in the next release that allows breaking changes, such as 0.4.0.

The **kwargs catch-all is left as is. Rejecting unknown keywords would be a separate breaking change beyond the scope of this issue.

Validation

The four new tests in test/test_builder.py were run against the unfixed code first: all four failed (no DeprecationWarning, no TypeError, and check_for_cycles missing from the constructor signature while check_for_cyces was present). They pass after the fix.

• uv run --frozen --extra dev ruff check graphtage test docs bindist: passes
• uv run --frozen --extra dev pytest: 144 passed
• uv run --frozen --extra dev make -C docs html SPHINXOPTS="-W --keep-going": build succeeded
• uv lock --check: reports the lockfile needs updating, but that reproduces on an unmodified master checkout in this environment because of a global exclude-newer setting. Neither pyproject.toml nor uv.lock is touched by this change.

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https://claude.ai/code/session_01GypKU5KdLfs2Cf8kS2TzJa