update version to 0.1.1 and pin examples to the tag
`v0.1` is an annotated tag, which dora 1.0.1 cannot check out: it records the tag object's id as the commit hash, then rejects the checkout for sitting on the peeled commit. `v0.1.1` is lightweight and resolves straight to the commit. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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