feat(data/smartphone): add Wikipedia URLs for 7 verified smartphones

[Seungpyo1007]

Closes #1

Summary

Cross-referenced unverified smartphone records (batch 13, 300 sampled records with no overlap against the 3,400 records judged in batches 1-12) against English Wikipedia using exact heading matching and multi-spec verification safeguards.

Verification Results

• Evaluated: 300 sampled smartphone records across 111 brands
• CONFIRM: 7
• AMBIGUOUS: 11
• NOTFOUND: 277
• CONTRADICT: 5

Safeguard Details

• Exact heading match required (_heading_matches)
• Required at least 2 independent agreeing specifications (launch year alone is blocked)
• Hard-gated variant confusion filters (Pro, Max, Ultra, Mini, Lite, 4G vs 5G, etc.)
• Year-only confirms: 0
• Confirmed records:
  • Amazon Fire Phone -> https://en.wikipedia.org/wiki/Amazon_Fire_Phone
  • itel A49 -> https://en.wikipedia.org/wiki/Itel_A49
  • Palm Treo 700w -> https://en.wikipedia.org/wiki/Palm_Treo_700w
  • Vertu Ti -> https://en.wikipedia.org/wiki/Vertu_Ti
  • Casio GzOne Commando V771 -> https://en.wikipedia.org/wiki/Casio_G%27zOne_Commando
  • G1500 -> https://en.wikipedia.org/wiki/LG_G1500
  • Neo 5 -> https://en.wikipedia.org/wiki/Oppo_Neo_5

GSMArena, PhoneDB, DeviceSpecifications, and Namuwiki were not requested.