Add Versus mirror site

[Sun-sunshine06]

Summary

• Adds a Versus mirror under sites/versus with product categories, rankings, search, detail pages, side-by-side comparisons, saved comparisons, and benchmark users.
• Covers smartphones, headphones, cameras, graphics cards, and smartwatches with 20 seeded products and specification-aware search.
• Registers versus as the next site on the upstream 15-site base, exposed on port 40015.
• Adds Docker build-time seed generation for the code-generated SQLite seed DB.

Verification

• sites/versus/venv/Scripts/python.exe -m py_compile sites/versus/app.py
• python -m py_compile control_server.py
• tasks.jsonl JSON parse check passed
• Flask test client smoke: /, /categories, /category/smartphones, /item/iphone-15-pro, /compare, /compare/iphone-15-pro-vs-samsung-galaxy-s24-ultra, /rankings, /search?q=sony+headphones, /login all returned 200
• Login as alice.j@test.com and save comparison flow returned 200

Note

• This branch is rebased onto aiming-lab/WebHarbor main and does not include hqhq1025 fork-only site changes.

[Susan571]

Reviewer checklist (WebHarbor Review Guide)

Reviewer note: Source-level review (checked out pull/41/head). The mechanical Docker pipeline (build, curl 200, md5 reset) was not run in my environment — please pair with a Docker-capable mechanical pass.

Visual fidelity: ❌ FAIL

• Compare/rankings IA fits versus.com conceptually and templates are richer than a bare skin, but all product imagery is the /product-art/<slug>.svg placeholder (shapes + brand initials + "{score} Versus Score"). No real product photos → fails the real-images check.

Functional depth: ✅ PASS

• Category browse, brand/price/min-score filters, product detail, side-by-side compare with a winner, compare-picker, rankings, search, login, save-comparison, account.
• Data quality is strong: real product names with plausible real specs (Sennheiser Momentum 4 = 60 h battery, Sony WH-1000XM5 = 30 h, Nikon Z8 = 45.7 MP, RTX 4080 Super = 16 GB/320 W). Best data of this contributor's set.

Task quality: ⚠️ Request changes (10 tasks)

• Good: Versus--1 (headphones ≥50 h → only Momentum 4 qualifies; real distractors), Versus--3 (camera ≥40 MP → Z8 + X-T5), Versus--6 (phones ≤ $1000 highest score → excludes S24 Ultra at $1299). These need spec-reading with near-miss distractors.
• Leak risk: the Versus Score is rendered on cards/art, so score-comparison tasks (--0, --2) may be answerable without opening detail. Move the deciding value behind the detail/compare page.
• Only 10 tasks (need 15–20); Versus--5 leaks the password.

Verdict: Request changes

(1) Use real product images; (2) hide the score on cards for score-comparison tasks; (3) provide 15–20 tasks with more ≥5-step reasoning; (4) remove the credential leak. This is the closest of the contributor's set to acceptable on functionality/data.