feat: Add OSINT features (v0.1.2)

- MAC vendor lookup (IEEE OUI database)
- BLE company_id to manufacturer mapping
- Device profile enrichment in API responses
- Export endpoints: devices.csv, devices.json, alerts.csv, probes.csv
- Auto-populate vendor on device creation
- CLI command: flask download-oui
- Makefile target: make oui

13 tests passing

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "esp32-web"
-version = "0.1.1"
+version = "0.1.2"
 description = "REST API backend for ESP32 sensor fleet"
 requires-python = ">=3.11"
 dependencies = [