data(brand): real descriptions for recognizable brands

[Seungpyo1007]

Summary

Replace the generic placeholder brand descriptions ("Phone brand observed in the GSMArena mobile devices dataset…") with real, factual EN + KO descriptions for 53 recognizable brands (Sony Ericsson, Palm, Vodafone, Orange, O2, Casio, Dell, HP, Amazon, T-Mobile, Bosch, Haier, Sagem, Sonim, Telit, Thuraya, Benefon, Qtek, E-TEN, MiTAC, Karbonn, Intex, verykool, Yezz, …).

Changes

• 53 data/brand/**/*.json: real description_en + description_ko (replacing the placeholder + filling the missing Korean field).
• 53 matching site/public/v1/brands/<slug>/index.json dump details refreshed (descriptions are verbatim passthrough, so the dump matches a full regenerate).
• 7 genuinely-obscure brands (Chea, XCute, MWg, Parla, NIU, WND, …) intentionally keep their provenance placeholder — no fabricated facts.
• Descriptions are conservative (region/segment) for unaudited brands (verified: false); audit can refine later.

Verification

• python -m app.validate PASS
• python TechEngine/integrity_check.py data --strict PASS
• git diff --check origin/main...HEAD PASS
• Local site build skipped (isolated worktree has no node_modules); change is build-safe description text and the TechEngine homepage validation builds the site.

Closes #1

[TechEngineBot]

TechEngine change review: PASS

• PR: data(brand): real descriptions for recognizable brands #45
• Ref: data/brand-descriptions
• Commit: 0ae2742
• Requested by: @Seungpyo1007
• Run: https://github.com/GetTechAPI/TechEngine/actions/runs/27915012863

Check	Result
python -m app.validate	PASS
python integrity_check.py TechAPI/data --strict	PASS

Changed data

Category	Added	Modified	Deleted	Added verified	Added unverified	Added Kaggle-sourced
brand	0	0	0	0	0	0
soc	0	0	0	0	0	0
smartphone	0	0	0	0	0	0
tablet	0	0	0	0	0	0
watch	0	0	0	0	0	0
pda	0	0	0	0	0	0
gpu	0	0	0	0	0	0
cpu	0	0	0	0	0	0

Changed record examples

• No data file changes detected.

Heuristic review

• Heuristic warnings: none found.

[TechEngineBot]

TechEngine validation stats: PASS

• PR: data(brand): real descriptions for recognizable brands #45
• Ref: data/brand-descriptions
• Commit: 0ae2742
• Run: https://github.com/GetTechAPI/TechEngine/actions/runs/27915012863

Data summary

Category	Total	Verified	Unverified	Missing verified	Tracked	Verified % of tracked
brand	189	0	189	0	189	0.0%
soc	2104	58	2046	0	2104	2.8%
smartphone	90118	184	89934	0	90118	0.2%
tablet	3048	0	3048	0	3048	0.0%
watch	378	0	378	0	378	0.0%
pda	110	0	110	0	110	0.0%
gpu	2030	0	2030	0	2030	0.0%
cpu	3977	976	3001	0	3977	24.5%
all	101954	1218	100736	0	101954	1.2%

Warning

Tracked verified coverage is below 50% for brand 0.0% (0/189), tablet 0.0% (0/3048), watch 0.0% (0/378), pda 0.0% (0/110), gpu 0.0% (0/2030), smartphone 0.2% (184/90118), all 1.2% (1218/101954), soc 2.8% (58/2104), and 1 more.
Tracked coverage excludes records missing the verified field; see the Missing verified column for those records.
This does not fail validation. Keep imported records verified: false until manual audit, but treat this as follow-up verification work before relying on the affected categories as curated data.

Validation notes

• Full advisory outlier listings are suppressed on successful runs because they are dataset-wide and mostly stable between PRs.
• Failure runs still include a detailed log excerpt for debugging.

Key output:

## app.validate
## integrity_check.py --strict
loaded CPU=3977 GPU=2030
✅ integrity gate: no hard anomalies.

Integrity section	Flagged lines
structural	0
CPU name/tier consistency (desktop mainstream only)	0
CPU single>multi (cinebench/geekbench — should be multi>=single)	0
CPU era-vs-score outliers	8
CPU cross-source ratio outliers (possible wrong-variant)	152
GPU cross-source ratio outliers + sanity	18