data(brand): Korean descriptions + Wikidata logos for new display/PC brands

[Seungpyo1007]

Summary

Brand metadata enrichment for the 18 new display/PC brands added while wiring the laptop and monitor categories.

• description_ko added for all 18 new brands (ViewSonic, AOpen, AOC, Planar, Chuwi, Thermaltake, Elo, Targus, and 10 others) — concise Korean one-liners describing each brand.
• logo_url added for 8 brands via domain-matched Wikidata P154 (logo image), resolved to commons.wikimedia.org/.../Special:FilePath/... URLs. Only entities whose Wikidata P856 (official website) matched the brand's stored website were used, so no mismatched logos.
• Brands without a confidently-matched Wikidata entity keep logo_url: null (no fabrication).

All records remain verified: false. Validation passes (app/validate.py). Public dump regenerated — only the 18 changed brand detail pages under site/public/v1/brands/<slug>/index.json.

Closes #1

[Seungpyo1007]

🤖 TechEngine · data validation

category   changed   verified
brand         18        false

• python -m app.validate → ✅ passed (0 errors) across all 10 categories (108,575 records).
• description_ko set for 18/18 new brands; logo_url set for 8/18 (Wikidata P154, website-matched).
• Dump regenerated: 18 brand detail pages under v1/brands/<slug>/. No churn beyond the changed set.

No schema changes — additive field fills only.

[Seungpyo1007]

🤖 TechEngine · verify (Tier 0)

Logos sourced by reality-checked linkage, not guesswork:

• Candidate Wikidata entity accepted only when its P856 (official website) equals the brand's stored website domain → then its P154 logo file → Special:FilePath URL.
• 10 brands had no confident match and stay logo_url: null (no fabricated assets).
• All records remain verified: false; promotion stays with the verify-network job.

Safe to rebase-merge.