docs(promo): K4 Velog Korean intro cross-post draft (canonical → dev.to)

[Hashevolution]

Summary

K4 is the Korean-blog cross-post channel — adds reports/promo-assets/velog-intro-ko.md ready for author to copy-paste into Velog UI. Body is a Korean-native re-write of the dev.to intro article + a v0.3.0 update box appended (the original dev.to article was v0.2.0 framed, but Korean readers arriving fresh deserve current state).

Recommended publish window: 2026-05-20 ~ 2026-05-22 (24–72h after K1 GeekNews publish to capture afterglow).

Verification

• Code-fence balance: 4 outer fence pairs (title/URL/cover-image meta in 3-tick, full body in 4-tick to wrap inner python/bash 3-tick blocks)
• Cover image reference uses raw GitHub URL with ?raw=true (verified pattern from K1 GeekNews body)
• All v0.3.0 update-box PR references (feat(reasoning): verification engine — Phase 2 PR-6 #290 / feat(reasoning): tool router — Phase 2 PR-8 #295 / feat(reasoning): planner — task decomposition (Phase 2 PR-7) #297 / docs(promo): 6 reusable promo screenshots + README hero image #304 / docs(handover): Ali collaboration track — 5 commits → 5 coding tracks + fixture schema v0 #311 / docs(design): Gemma 4 variant 3×3 evaluation plan — pre-registration #315 / docs(design): v0.3.x LLM Provider Contract — Track 1 deliverable #316 / docs(promo): injection-fixtures schema v0 → v1 (Ali refinements accepted) #317 / feat(security): schema v1.1 — catalog_context for catalog_poisoning (Track 2c) #322 / feat(reasoning): synth call-site backend wiring (Track 1 PR-A) #324 / test(reasoning): conformance suite + SDK leakage guard (Track 1 PR-B) #325 / feat(reasoning): JAMES_PLUGINS loader + JAMES_LLM_TEMPERATURE env (Track 1 PR-C) #326) merged on main as of git log origin/main
• "Mini Palantir" trademark disclaimer preserved verbatim
• canonical URL guidance points to dev.to original (Google duplicate-content prevention)
• No core/ files touched — module-size gate N/A
• No bench numbers required — no core/retrieval, core/graph, or core/reasoning touched

Out of scope

• Actual Velog publish — author submits via Velog web UI on chosen day
• K1 GeekNews comment back-link — deliberately NOT done (Korean community convention against self-promo comments)
• dev.to original comment back-link — deliberately NOT done (preserves Ali-watched channel signal-to-noise)
• Velog URL recording into launch-tracker.md — separate micro-PR once URL is live
• K5+ OKKY / Clien / Tistory channels — sequenced AFTER E1 Show HN (2026-05-26) to avoid Korean-community marketing-fatigue

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