fix: auth token persistence, project routes, editor SSR, and agent chat

fix: resolve EmbeddingModelV3 type mismatch with Google provider

feat: add Google Gemini embeddings support

chore: remove references to external proprietary docs

feat: add OpenRouter as LLM provider

fix: Docker infra — drizzle migrations, nginx proxy, health checks

fix: ESM import extensions and replace raw SQL ANY() with drizzle inArray

fix: Docker and environment configuration fixes

feat: add Yjs/Hocuspocus real-time collaborative editing

feat: wire AI orchestrator to route layer with real DB queries

feat: wire frontend to backend API with SWR hooks and SSE streaming

fix: resolve cross-package type errors after branch integration

chore: add open source packaging - LICENSE, README, CONTRIBUTING, CI, templates

feat: add Slack, GitHub Issues, and Jira notification integrations

feat: add GitHub App integration with webhook handling