Align URL scanner with shared hints

[alyldas]

Summary

• Add boolean URL scanner checks and sink-based range streaming with early stop support.
• Accept shared-style text hints for cheap clean-text rejection while preserving legacy scan(input) output.
• Keep URL parsing and validation inside the URL package and preserve existing filter wrapper behavior.
• Extend URL benchmarks with scanner setup, check(), bare-domain, hinted clean, and late-match rows.

Validation

• npm ci
• npm run check
• npm run benchmark:url
• npm pack --dry-run
• Public runtime exports and package dry-run contents reviewed

Benchmarks

Latest URL benchmark highlights:

• check hinted short clean: 0.0003 avg ms
• check direct URL: 0.0086 avg ms
• check bare domain: 0.0061 avg ms
• check late-match URL: 0.6098 avg ms
• censor direct URL: 0.0114 avg ms
• censor bare domain: 0.0073 avg ms
• censor obfuscated URL: 0.0114 avg ms
• censor late-match URL: 0.6316 avg ms

Closes #22

No publish, no merge, no tag/release.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

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