fix(data): add source citations for 45 laptop/monitor records

[Seungpyo1007]

Summary

Upgrades uncited data/laptop/ and data/monitor/ records from
dataset-only provenance (huggingface Ammok / abhinavflac GitHub / Kaggle
Amazon-monitor) to source-verified by adding authoritative
manufacturer, Wikipedia, or vendor spec-page citations that confirm the
stored values, and setting verified: true. Original dataset provenance
URLs are retained alongside the new sources. No value was invented and no
citation was fabricated.

Methodology

1. Scanned data/laptop/ and data/monitor/ live for records with
   verified != true. None had empty source_urls — every record already
   carried a bulk-dataset link, so the gap was uncited, not unsourced.
   Live scope: laptop 1995 total / 1890 unverified;
   monitor 882 total / 882 unverified.
2. For a high-confidence subset of well-documented models, looked up the
   manufacturer spec page (Apple / Microsoft / Google / ASUS / Dell /
   Gigabyte / MSI / Samsung / LG / BenQ / ViewSonic) or the Wikipedia
   infobox and compared the stored specs (size, resolution, refresh,
   CPU/GPU, RAM, storage, weight).
3. Source confirms the values -> added the source URL, set
   verified: true.
4. Source contradicts a value -> corrected the value to match the cited
   source (never invented) and cited it.
5. No confirmable per-model source (generic dataset configs, or records
   whose CPU/GPU contradicted the spec page with no clean single-source
   fix) -> left the record as-is, uncited.

Counts

Records touched: 45 (24 laptop + 21 monitor)

• Newly cited-and-verified (no value change): 35

  • Laptops (16): Apple MacBook 12" x3, MacBook Pro 2015/16/17 x7,
    Microsoft Surface Laptop (1st gen) x2, ASUS Zenbook 14 OLED
    UX3405MA / UX3405CA x2, plus MacBook Air x2 (see below — 2 cited-only).
  • Monitors (19): Dell U2723QE/U2724D/U3223QE/S2722DC/S3422DWG,
    Gigabyte M27Q/M28U/M32UC/GS34WQC/AORUS FV43U, MSI G273CQ/G27C4X/
    MAG274UPF, Samsung Odyssey Neo G8/G55A, LG 24GS60F, BenQ EX2710Q/
    XL2566K, ViewSonic VX3218-PC-MHD.

• Value-corrected-with-citation: 10

  • Apple MacBook Air 2017 weight 1340 -> 1350 g (Apple: 1.35 kg) x2
  • Microsoft Surface Laptop weight 1252 -> 1250 g (Wikipedia/MS: 1.25 kg) x3
  • Google Pixelbook weight 1100 -> 1110 g (Google: 1.11 kg) x3
  • LG 24GN60R size 24.0 -> 23.8 in (LG spec) x1
  • Samsung Odyssey G9 49" DQHD resolution 3440x1440 -> 5120x1440,
    ppi 76 -> 109 (Samsung spec) x1

• Left uncited (no confirmable source in this pass): 2727
  (1866 laptop + 861 monitor) — remaining bulk-dataset records not
  individually verified in this batch; untouched, keep existing provenance.

Verification

• python -m app.validate -> passed.
• python integrity_check.py <data> --strict -> "integrity gate: no hard
  anomalies" (no verified-without-sources, no dup/slug issues).
• Static dump regenerated with python -m app.dump from TechEngine against
  this worktree (fresh scratch DATABASE_URL, TECHAPI_DATA_DIR -> this
  worktree data/) as the final commit; laptop/monitor detail pages reflect
  the new citations and corrections. Unrelated scoring / updated_at drift
  for other categories was excluded to keep the PR scoped.

Closes #296