Feature/sprint 8 customer app

[frigini]

Summary by CodeRabbit

• New Features

  • Public Customer Web App added (Next.js): landing, city search, service tags, listings, provider profiles, ratings/reviews, auth, profile edit, provider dashboard and provider tools.

• Documentation

  • Roadmap and README expanded: dual‑stack frontend, Customer Web App docs, sprint updates and MVP moved to 14 Mar 2026.

• API & Security

  • Provider search gains textual term filtering; public provider endpoints, anonymous rate limiting, privacy feature flag and dev fake‑auth toggle added.

• Data & Migrations

  • Provider profiles extended with service names and additional phone numbers; seed data and DB migration included.

• Tests

  • New unit and integration tests for search, public profiles, profile updates and provider flows.