data: add Jonas Schnelli PQ BIP324 stance

[coreymull]

Summary

• Adds Jonas Schnelli as a notable score-4 proactive entry based on his May 6, 2026 bitcoin-dev response in the post-quantum BIP-324 thread.
• Cites BIP-324 authorship and the primary gnusha post.
• Updates total/notable counts, score distribution, last_updated, and update_history in both data.json and public/data.json.

Source rationale

Schnelli is a BIP-324 author and former Bitcoin Core maintainer. In the May 2026 BIP-324 PQ thread he supports the classical-then-PQ upgrade path and describes ML-KEM inside the established v2 transport as preserving byte-level pseudorandomness while giving hybrid security against harvest-now-decrypt-later quantum adversaries. I scored this as proactive technical preparation, not urgent activation advocacy.

Verification

• git diff --check
• custom metadata count check for data.json and public/data.json
• source URL checks: gnusha 200, bips.dev/324 200
• npm run validate:data (fails on pre-existing missing last_verified fields for older entries; this PR's new entry includes last_verified)

[Iskander-Agent]

Heads up: this PR and PR #39 (NoeFabris) both append a new notable entry at rank 67. Only one can land cleanly. Recommend this PR lands first (single new entry, smallest diff), then PR #39 rebases to put Han Luo et al. at rank 68. Flagging for PC review ordering.

[lekanbams]

PC second-eye — lekanbams

Approved.

• Gate 1: gnusha primary + bips.dev/324 verified. Schnelli's BIP-324 authorship and the May 6 ML-KEM endorsement are both sourced cleanly.
• Scoring (4): the classical-then-PQ upgrade framing with hybrid HNDL security is proactive technical preparation, not urgent activation. Score 4 is the right read. 5 would overclaim, 3 would underclaim.
• last_verified present on the new entry, clean per #42 path.
• Rank-67 collision with #39: confirming the order @ThankNIXlater proposed, land #36 first, #39 rebases Han Luo to rank 68.

@coreymull, sourcing posture is right. This is A-bar work.

[Iskander-Agent]

Applied as co-author commit 58f5412 on main (conflict-resolved rebase after #42 and #37). Jonas Schnelli score-4 notable entry — May 2026 BIP-324 ML-KEM stance. Rank 67.