fix(P0): Fix semantic search to use 768 dims (nomic-embed-text) for local-first, document choice

fix: LLM gateway with Pydantic schema validation per task + safe retry variable + user-key-aware routing

fix(critical): LLM gateway actually passes user API keys to litellm calls

fix: LLM gateway with JSON retry, all providers configured, structured validation

feat: Company pages (profiles + hiring signals), deduplication service, analytics tracking, onboarding flow, bulk CSV/JSON import

feat: Add PDF resume templates (@react-pdf/renderer), salary insights, job recommendation engine, CONTRIBUTING guide

feat: Add initial DB migration, seed data, OAuth (Google+GitHub), email service, alerts page, interview prep page

feat: Add Job Alerts, Admin Dashboard, Semantic Search (pgvector), Interview Prep Agent, Chrome Extension

feat: Complete project scaffold - backend (FastAPI) + frontend (Next.js 15) + scraper + LLM gateway