feat: v0.1.4 — device intelligence dashboard

Add tabbed dashboard at /dashboard/ with three D3.js visualizations:
- Vendor treemap (devices grouped by type and vendor)
- SSID social graph (force-directed, shared probed SSIDs as edges)
- Fingerprint clusters (packed circles by device behavior)

Intelligence API endpoints at /api/v1/intelligence/ with param
validation. Dashboard built on htmx + Pico CSS dark theme + D3 v7,
all vendored locally (make vendor). 13 new tests (59 total).

ROADMAP.md

@@ -29,16 +29,26 @@
 - [x] Sensor config endpoint (GET/PUT)
 - [x] OTA trigger endpoint
 - [x] Calibration trigger endpoint
-- [ ] Sensor history/metrics (moved to v0.1.4)
+- [ ] Sensor history/metrics (moved to v0.1.5)
 
-## v0.1.4 - Zones & Presence
+## v0.1.4 - Device Intelligence Dashboard [DONE]
+
+- [x] Base dashboard layout (htmx + Pico CSS + D3.js dark theme)
+- [x] Vendor treemap (D3 treemap by device type and vendor)
+- [x] SSID social graph (D3 force-directed, shared probed SSIDs as edges)
+- [x] Device fingerprint clusters (D3 packed circles by behavior)
+- [x] Intelligence API endpoints (3 endpoints)
+- [x] Vendored static assets (`make vendor`)
+- [x] Pagination totals, request logging, data retention
+
+## v0.1.5 - Zones & Presence
 
 - [ ] Zone management (assign sensors to areas)
 - [ ] Device zone tracking
 - [ ] Dwell time analysis
 - [ ] Presence history
 
-## v0.1.5 - Production Ready
+## v0.1.6 - Production Ready
 
 - [ ] Authentication (API keys or JWT)
 - [ ] Rate limiting
@@ -46,10 +56,22 @@
 - [ ] Podman container deployment (quadlet/systemd unit)
 - [ ] Production deployment guide
 
+## v0.2.0 - Visualization Dashboard
+
+- [x] Base dashboard layout (htmx + Pico CSS + D3.js) — done in v0.1.4
+- [x] Vendor treemap — done in v0.1.4
+- [x] SSID social graph — done in v0.1.4
+- [x] Device fingerprint clusters — done in v0.1.4
+- [ ] Presence timeline (device enter/leave Gantt chart)
+- [ ] Deauth attack timeline (alert overlay with source/target)
+
 ## Future
 
+- RSSI heatmap / triangulation
+- CSI radar display
+- Temporal knowledge graph
+- Entropy dashboard (ambient awareness metric)
 - WebSocket for real-time updates
-- Web dashboard (htmx + Pico CSS)
 - Home Assistant integration
 - Grafana dashboards
 - Webhook callbacks for alerts