Add dd0c/route project scaffolding: migrations, docker-compose, README

- PostgreSQL schema: orgs, users, api_keys, provider_configs, routing_rules, cost_tables, feature_flags
- TimescaleDB schema: request_events hypertable, hourly/daily continuous aggregates, compression, retention
- docker-compose.yml: postgres, timescaledb, redis for local dev
- README with quick start, architecture overview, pricing tiers
- .env.example, .gitignore

products/01-llm-cost-router/README.md

@@ -0,0 +1,53 @@
+# dd0c/route — LLM Cost Router & Optimization Dashboard
+
+Drop-in OpenAI-compatible proxy that routes AI requests to the cheapest capable model.
+
+## Quick Start
+
+```bash
+# Start local infra
+docker compose up -d
+
+# Run the proxy
+OPENAI_API_KEY=sk-your-key cargo run --bin dd0c-proxy
+
+# Test it
+curl http://localhost:8080/v1/chat/completions \
+  -H "Authorization: Bearer your-dd0c-key" \
+  -H "Content-Type: application/json" \
+  -d '{"model":"gpt-4o","messages":[{"role":"user","content":"Hello"}]}'
+```
+
+## Architecture
+
+- **Proxy Engine** (Rust/Axum) — <5ms overhead, SSE streaming, async telemetry
+- **Router Brain** — Complexity classification, cost-based routing, fallback chains
+- **Dashboard API** — REST API for config, analytics, team management
+- **TimescaleDB** — Time-series telemetry with continuous aggregates
+- **PostgreSQL** — Config, auth, routing rules
+- **Redis** — API key cache, rate limiting
+
+## Project Structure
+
+```
+src/
+  proxy/     — Proxy server (main entry point)
+  api/       — Dashboard API server
+  worker/    — Background jobs (digests, alerts)
+  router/    — Routing logic & complexity classifier
+  auth/      — API key validation, JWT, OAuth
+  config/    — App configuration
+  data/      — Data layer traits (EventQueue, ObjectStore)
+  analytics/ — PostHog PLG instrumentation
+migrations/  — PostgreSQL + TimescaleDB schemas
+tests/       — Unit, integration, E2E tests
+infra/       — CDK / deployment configs
+```
+
+## Pricing
+
+| Tier | Price | Requests/mo | Retention |
+|------|-------|-------------|-----------|
+| Free | $0 | 10K | 7 days |
+| Pro | $49/mo | 1M | 90 days |
+| Enterprise | Custom | Unlimited | 1 year |