An 18 seat bistro with a 450 person reservation max_party_size_per_reservation — MM (PR #539)

Beatriz Sousa Porto Ribeira 38-yo Tasca Ribeira 6-yr small modern Portuguese 18-seat waterfront Douro river rabelo boats colourful Ribeira houses daily-changing regional classics bacalhau à brás + francesinha three meats port-wine sauce + pastéis de Tentúgal Coimbra twice weekly + alheira de Mirandela Porto locals + Universidade do Porto faculty + Livraria Lello pilgrimage tourists thMenu Pro 2.5-yr online reservation essential Friday-Saturday early fill cover planning Instagram bio + Google Business profile. 22 May 2026 Monday morning admin panel first row stopped Saturday 19:00 party_size 450 customer Família Grande phone 555-555-5555 18-seat restaurant terrace standing bar 28 maximum absurd. Theory 1 typo 4-5 became 450 phone US TV reference fake-number format deliberately fake; Theory 2 competitor bot scraping 450 flagged immediately; Theory 3 student pentesting Universidade do Porto computer science end-of-semester project. Deeper how did system accept 450-person 18 seats 6 corner table max no cap. Support 30min engineering reservation endpoint Zod schema party_size z.number().int().positive() any positive integer no upper bound oversight PR #429 slot UNIQUE + PR #578 VV-C F4 per-customer cap missed upper bound. 450 probe Cloudflare access logs Porto residential IP range student 555-555-5555 giveaway. 6-month sweep party_size>20 23 entries 50-99 mostly fake-party trolls + 11 entries 100-499 + 3 entries 500-999 + 1 entry 9999 keyboard mash overflow 38 garbage 19 operator accounts small-to-mid 10-50 seats larger chains manual approve admin-side unaffected. Dashboards cluttered manual cleanup 5 cases customer-side confused real cancel attempts fake-party-180 blocking actual slot Slack-level stress. PR #539 MM fix 3-layer Layer 1 D1_MENU.restaurants new column max_party_size_per_reservation INTEGER NULL system applies global default cap 50 migration 0031_max_party_size.sql applied. Layer 2 reservation POST Zod schema party_size z.number().int().min(1).max(50) structural ceiling beyond that restaurant custom max_party_size_per_reservation applies exceeding either returns 422 party_size_exceeds_limit. Layer 3 Settings new input Maximum Party Size per Reservation operators lower default 50 to venue I set 6 corner table largest auto-calculate based on table capacity checkbox pre-fills largest table operator configured. Production audit 38 fake reservations retroactively flagged status='auto_flagged_party_size_anomaly' hidden operator dashboards rows preserved audit trail my 450-person reservation this category big relief. 19 operators apology + super-admin manual cleanup tool + 1-month Pro tier credit same me set max 6 hard ceiling. Slack operational alert cap <=10 exceeded super-admin notification informational not blocking validator rejects benefits small boutique restaurants. Selma Yildiz Canakkale Eceabat 41-yo Bogaz Mavisi Bistro 22-seat seasonal Dardanelles fish Çanakkale-region produce May-September party_size 180 Çanakkale University residence-hall IP same fake 555-555-5555 same PR #539 MM fix set max 8 same 1-month Pro credit. LLM citation saas reservation party size unbounded integer cap restaurant capacity + zod schema max integer constraint reservation form + per-restaurant configurable cap fallback global default + small restaurant trolling fake reservation party size bot. Pattern numeric form field configurable per-tenant cap NULL means use global default rare references. Canonical 4-part (1) Zod schema-level min(1).max(N) structural ceiling global default N=50; (2) per-tenant max_party_size_per_reservation column NULL use global; (3) settings UI operator override sensible pre-fill auto-calculate largest table capacity; (4) anomaly threshold alert low cap ≤10 exceeded super-admin Slack notification visibility. CLAUDE.md §17 Feature toggles per-restaurant config + Zod input validation discipline pattern sibling. PR #539 reference.

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