data(smartphone): import PhoneDB raw variants (batch 2-3) + normalize names

[Seungpyo1007]

Summary

Continues the PhoneDB variant-level import (batch 1 landed in #27). Adds ~5,450 new variant-level smartphones + 86 SoC seeds, normalizes 7,168 device names (fixes the #27 double-space heuristic warnings), and refreshes the public dump. All raw seed (verified: false) with per-record source_urls to phonedb.net.

Changes vs main

• +5,450 smartphones (PhoneDB device ids ~25,227→16,228; years skew 2020–2023).
• +86 SoC seeds (auto-detected chipsets, verified: false).
• 2,596 existing (batch-1) smartphone names normalized (whitespace collapse).
• site/public/v1 dump refreshed as the final commit → now 24,655 smartphones / 1,773 SoC (was stale at 19,205 / 1,560).
• Distinct per-batch commit messages (brand/year); Refs #1 in each commit body.

Validation (local)

• python -m app.validate → ✅ passed
• python TechEngine/integrity_check.py data --strict → ✅ no hard anomalies
• Dump generated from an isolated git-archive snapshot + fresh DB (so a concurrent session's in-progress writes to the shared data/ dir could not contaminate it).

Closes #1

[Seungpyo1007]

Validation review — PASS ✅

Commands run (local):

• python -m app.validate → ✅ passed
• python TechEngine/integrity_check.py data --strict → ✅ no hard anomalies

Data changes vs main:

category	added	modified
smartphone	5,450	2,596 (name normalize)
soc	86	—

Example record — data/smartphone/samsung/2026/samsung-sm-s9480-galaxy-s26-ultra-5g-...json:

{ "slug": "samsung-sm-s9480-galaxy-s26-ultra-5g-dual-sim-td-lte-cn-hk-tw-512gb-samsung-miracle-3",
  "name": "Samsung SM-S9480 Galaxy S26 Ultra 5G Dual SIM TD-LTE CN HK TW 512GB (Samsung Miracle 3)",
  "brand": "samsung", "soc": "qualcomm-snapdragon-8-elite-gen-5-sm8850-1-ad-for-galaxy",
  "release_date": "2026-03-11", "ram_gb": 12, "battery_mah": 5000, "os": "Android",
  "verified": false, "source_urls": ["https://phonedb.net/index.php?m=device&id=25688"] }

Heuristic warnings: the double-space names flagged on #27 are fixed (7,168 normalized). Remaining integrity-gate ratio outliers are pre-existing GPU/CPU benchmark notes, unrelated to this PR.

Site build: N/A (no site/ changes).

[Seungpyo1007]

Dataset stats (post-merge projection)

category	total	verified	unverified	verified %
smartphone	24,655	184	24,471	0.7%
soc	1,773	58	1,715	3.3%
brand	189	—	—	—
cpu	3,977	—	—	—
gpu	2,030	—	—	—

Warning

Verified coverage is far below 50% (smartphone 0.7%, soc 3.3%) — expected for bulk raw seed imports. Verification is deferred to TechEngine / manual audit per the import workflow.