Add smoothness, track type, cycleway, and bike route color modes

Four new route visualization modes extracted from BRouter WayTags:

- Smoothness: excellent (green) → impassable (dark red)
- Track Type: grade1 (green, best) → grade5 (red, worst)
- Cycleway: track/lane/shared_lane/no with direction awareness
- Bike Route: icn/ncn/rcn/lcn priority from route_bicycle_* tags

Each mode includes map polyline coloring, elevation chart coloring,
inline legend, hover label, i18n (EN+DE), and mock fixture data.

Dockerfile patched to also expose tracktype in BRouter WayTags
(smoothness, cycleway, and route_bicycle already present).

Dropdown order: plain, elevation, grade, surface, road type, speed
limit, smoothness, track type, cycleway, bike route.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/i18n/src/locales/de.ts

@@ -104,6 +104,10 @@ export default {
       grade: "Steigung",
       highway: "Straßentyp",
       maxspeed: "Tempolimit",
+      smoothness: "Fahrbahnqualität",
+      tracktype: "Wegtyp",
+      cycleway: "Radweg",
+      bikeroute: "Radroute",
       surfaceLegend: "Farbe nach Straßenbelag",
       surfaceUnavailable: "Untergrunddaten für dieses Profil nicht verfügbar",
     },
@@ -115,6 +119,10 @@ export default {
       grade: "Steigungsprofil",
       highway: "Straßentypenprofil",
       maxspeed: "Tempolimitprofil",
+      smoothness: "Fahrbahnqualitätsprofil",
+      tracktype: "Wegtypenprofil",
+      cycleway: "Radwegprofil",
+      bikeroute: "Radroutenprofil",
       low: "Tief",
       high: "Hoch",
     },

packages/i18n/src/locales/en.ts

@@ -104,6 +104,10 @@ export default {
       grade: "Grade",
       highway: "Road Type",
       maxspeed: "Speed Limit",
+      smoothness: "Smoothness",
+      tracktype: "Track Type",
+      cycleway: "Cycleway",
+      bikeroute: "Bike Route",
       surfaceLegend: "Color by road surface type",
       surfaceUnavailable: "Surface data not available for this profile",
     },
@@ -115,6 +119,10 @@ export default {
       grade: "Grade Profile",
       highway: "Road Type Profile",
       maxspeed: "Speed Limit Profile",
+      smoothness: "Smoothness Profile",
+      tracktype: "Track Type Profile",
+      cycleway: "Cycleway Profile",
+      bikeroute: "Bike Route Profile",
       low: "Low",
       high: "High",
     },