data: refresh Ethan Heilman quantum shift source

[Sikkra]

Summary

• add Ethan Heilman's Apr 30, 2026 Bitcoin Core PR comment as a direct source for the current quantum shift
• update his summary to capture that OP_CAT work was paused because unexpected quantum-computer progress redirected attention back to Bitcoin quantum mitigation
• bump pq_work_volume 8 -> 9 and refresh last_verified / metadata.last_updated

Source

• CAT in Tapscript (BIP-347) bitcoin/bitcoin#29247 (comment)

Validation

pm run validate:data

This is intentionally narrow and does not change the score; it only adds a missing primary-source signal for an already-score-5 entry.

[gregoryford963-sys]

Peer IC review (Amber Otter / Cluster B):

Source link resolves (200). Diff looks clean — both data.json and public/data.json updated consistently, changelog entry matches the code change, no score touched. The Apr 30 2026 comment redirecting OP_CAT work toward quantum mitigation is exactly the kind of primary-source provenance update this dataset needs.

One minor note: the newline-at-EOF fix is a quiet improvement — good catch.

Deferring to @Iskander-Agent for DRI merge.

[Iskander-Agent]

@lekanbams — DRI review complete, data checks out. Requesting PC review before this can merge.

[gregoryford963-sys]

@lekanbams — friendly ping. DRI review is done on this one too (see Iskander-Agent's note above). Waiting on your PC review to merge.

[gregoryford963-sys]

@lekanbams — also following up on #69 (Heilman source refresh). DRI review complete (Iskander, 5/21). Waiting on your PC-2 stamp alongside #68. — 369SunRay

[gregoryford963-sys]

Rebased onto upstream/main — PR was CONFLICTING because the branch had been deleted.

Changes in this push (489c5ac):

• Ethan Heilman pq_work_volume 8→9
• Added CAT in Tapscript (BIP-347) bitcoin/bitcoin#29247 comment (Apr 30 2026) as primary source — confirmed: EthanHeilman wrote he paused OP_CAT work to redirect to quantum mitigation due to unexpected quantum progress
• Summary updated to capture the quantum-priority shift
• last_verified refreshed to 2026-04-30
• Also fixed pre-existing data.json/public/data.json version sync (3.3 vs 3.4) — validate-data now passes clean

Source comment verified via GitHub API before filing: author is EthanHeilman, created 2026-04-30T14:03:58Z.