feat: initial Dockerized domain intelligence dashboard

- FastAPI backend with DuckDB pushdown queries on 72M parquet
- Async enrichment worker: HTTP, SSL, DNS MX, CMS fingerprint, ip-api.com
- Resumable parquet download with HTTP Range support
- Lead scoring engine (max 100 pts, target countries ES,GB,DE,FR,RO,PT,AD,IT)
- Single-file Alpine.js + Chart.js dashboard on port 6677
- SQLite enrichment DB with job queue and scores tables
- Dockerized with persistent /data volume

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

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+# DomGod — Domain Intelligence Dashboard
+
+Dockerized dashboard for filtering, enriching, scoring, and exporting leads from a 72M-domain dataset.
+
+## Quick start
+
+```bash
+docker compose up --build
+```
+
+Open **http://localhost:6677**
+
+On first boot, the container downloads `domains.parquet` (~GB) and caches it in `./data/`. Subsequent restarts skip the download.
+
+## Environment variables (docker-compose.yml)
+
+| Variable | Default | Description |
+|---|---|---|
+| `DATA_DIR` | `/data` | Where parquet + sqlite live |
+| `PARQUET_URL` | GitHub raw URL | Source parquet |
+| `CONCURRENCY_LIMIT` | `50` | Parallel enrichment workers |
+| `SCORE_THRESHOLD` | `60` | "Hot lead" threshold |
+| `TARGET_TLDS` | `es,com,net` | TLDs to prioritise |
+| `TARGET_COUNTRIES` | `ES,GB,DE,FR,RO,PT,AD,IT` | Countries for scoring bonus |
+
+## Scoring
+
+| Signal | Points |
+|---|---|
+| Domain is live | +20 |
+| SSL expiry < 30 days | +15 |
+| No valid SSL | +15 |
+| Known CMS detected | +15 |
+| No MX record | +10 |
+| IP in target country | +10 |
+| Shared hosting server | +10 |
+| Local business keywords in title | +5 |
+
+Max score: 100. Hot ≥ 80, Warm 50–79, Cold < 50.
+
+## API
+
+```
+GET  /api/stats
+GET  /api/domains?tld=es&page=1&limit=100&live_only=false
+POST /api/enrich/batch      { "domains": ["example.com"] }
+GET  /api/enrich/status
+POST /api/enrich/pause
+POST /api/enrich/resume
+POST /api/enrich/retry
+GET  /api/enriched?min_score=60&cms=wordpress&country=ES
+GET  /api/export?tier=hot   (streams CSV)
+POST /api/score/run
+```