feat(tomtom_incidents): TomTom real-time traffic incidents adapter (v0.9.5)

Fourth CENTRAL_TRAFFIC event adapter. Complements wzdx (federal work zones) and
state_511_atis (state-DOT reports) with TomTom commercial vehicle-telematics
coverage. Polls the Orbis incidentDetails endpoint per metro bbox, emits one
event per incident to central.traffic.incident.<state>. Ships disabled.

central-supervisor + central-gui restart only -- adapter row on the EXISTING
CENTRAL_TRAFFIC stream, so NO archive restart and no new stream/dependency.
Reuses the existing "tomtom" api key.

- Bbox limit refutation: incidentDetails rejects bbox > 10,000 km^2, so coverage
  is per-metro bboxes (Treasure Valley / Boise, 8,601 km^2), NOT statewide. One
  bbox @ 1800s = 1,440 calls/mo = 58% of the 2,500/mo free-tier cap. Expansion
  rows must respect N*(43200/cadence_min) <= 2500.
- category="incident.tomtom_incidents" -> GUI event_type "incident" (shared with
  state_511_atis; cross-source overlap is by design = additive coverage, distinct
  dedup ids + categories, no Central-side cross-source dedup).
- Severity from magnitudeOfDelay (0->1,1->1,2->2,3->3,4->4; 4=closure). Never None.
- geo.geometry carries TomTom's Point/LineString directly (already lon/lat GeoJSON;
  the v0.9.3 framework renders the affected road as a polyline). No decode needed.
- Dedup id <state_code>:tomtom:<tomtom_id> (upstream id stable across polls,
  verified 154/154 over 60s). Inherits the v0.9.1 dedup mixin.
- aiohttp params= URL-encodes the fields{} GraphQL braces (no curl-glob issue);
  key redacted from logs; poll skips cleanly without a key.

Full suite: 809 passed, 1 skipped (central and unprivileged zvx, 3x each).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

sql/migrations/028_add_tomtom_incidents_adapter.sql

@@ -0,0 +1,17 @@
+-- Migration: 028_add_tomtom_incidents_adapter
+-- Adds the tomtom_incidents adapter onto the EXISTING CENTRAL_TRAFFIC stream
+-- (central.traffic.incident.<state>). No new stream -> no central-archive restart.
+-- Reuses the existing "tomtom" api key. Ships disabled; operator enables via GUI.
+-- NOTE: TomTom incidentDetails rejects any bbox > 10,000 km^2, so coverage is
+-- per-metro bboxes (Treasure Valley here), NOT statewide. Expansion = more bbox
+-- rows, but mind the 2,500/mo free-tier cap: N_bboxes * (43200/cadence_min) <= 2500.
+-- Additive-only: idempotent via ON CONFLICT DO NOTHING.
+
+INSERT INTO config.adapters (name, enabled, cadence_s, settings)
+VALUES (
+    'tomtom_incidents',
+    false,
+    1800,
+    '{"api_key_alias": "tomtom", "bboxes": [{"name": "treasure_valley", "min_lon": -116.85, "min_lat": 43.30, "max_lon": -115.65, "max_lat": 44.10, "state_code": "ID"}]}'::jsonb
+)
+ON CONFLICT (name) DO NOTHING;