SkillOps Paper and Artifacts v1.2.0

SkillOps paper and reproducibility artifacts for v1.2.0.\n\nAssets:\n- skillops-paper.pdf: SHA-256 98957F4295EAFA777A234A77B9A75AFB4DE9294B50E60FE5B72565BD788F03B9\n- skillops-paper-source.zip: SHA-256 38833A57BF1F7001EEE72D3CF2ECD8E5E68B559D6DD17832F46F4F8D6FA46974\n\nThis release adds the external annotation execution package, arXiv endorsement outreach packet, Zenodo file-state audit, and v1.2.0 DOI wiring. It preserves the evidence boundary: external human annotation, powered external statistical validation, and venue submission remain account-side or external-study actions until completed.\n\nPublished Zenodo version DOI: 10.5281/zenodo.20900771. Concept DOI: 10.5281/zenodo.20061198. Zenodo archive: rrrrrredy/skillops-paper-v1.2.0.zip, MD5 92928f0890c188251ea930e6975d48e3; embedded release PDF/source hashes match the assets above.