Add Digit Scanner#5

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michaelkleber wants to merge 18 commits intoMysticial:masterfrom

michaelkleber:master

Commits on Jan 15, 2026

Commits on Jan 17, 2026

Create README.md explaining digit scanning
michaelkleber
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Commits on Jan 20, 2026

Efficiency improvement: test bit before atomic_or
michaelkleber
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Speed up by tracking unconditionally some info that gets discarded.
michaelkleber
committed

Commits on Feb 1, 2026

If almost all strings are found, report which are missing.
michaelkleber
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Inlcude any leading 0's in the last-seen digit string.
michaelkleber
committed