Server: InfluxDB 2 storage, live telemetry endpoint, ABRP forwarder

- MongoDB replaced by InfluxDB 2 (one bucket, installationId tag).
  Consumption is stored per chunk at its recordedAt and summed on read,
  so a chunk the car re-sends from its cache overwrites itself instead
  of being counted twice ($inc did count it twice). Lifetime is a
  running total derived on read.
- POST /v1/telemetry takes batches of samples in ABRP's tlm fields; every
  field is bounded, unknown fields are dropped, unread signals stay absent.
- After a successful write the newest fresh sample is forwarded to ABRP
  with ABRP_API_KEY / ABRP_USER_TOKEN from the server environment; rate
  limited, never queued. The car no longer needs ABRP credentials.
- Self-hosting: standalone output, Dockerfile (tests run in the build,
  runs as UID 10001), .env.example and README for the new setup.
- Dev shell gains Node 22 and InfluxDB 2.

Verified locally against InfluxDB 2.7.12: all endpoints, retry
idempotency, and the dashboard pages. Unit tests: 17 pass.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/Dockerfile

@@ -0,0 +1,27 @@
+# Self-hosted image of the car server: Next.js standalone output on Node 22.
+# Configuration comes entirely from the environment at runtime (see .env.example);
+# nothing secret is baked in.
+
+FROM node:22-alpine AS deps
+WORKDIR /app
+COPY package.json package-lock.json ./
+RUN npm ci --no-audit --no-fund
+
+FROM node:22-alpine AS build
+WORKDIR /app
+ENV NEXT_TELEMETRY_DISABLED=1
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+RUN npm test && npm run build
+
+FROM node:22-alpine
+WORKDIR /app
+ENV NODE_ENV=production \
+    NEXT_TELEMETRY_DISABLED=1 \
+    PORT=3000 \
+    HOSTNAME=0.0.0.0
+COPY --from=build --chown=10001:10001 /app/.next/standalone ./
+COPY --from=build --chown=10001:10001 /app/.next/static ./.next/static
+USER 10001:10001
+EXPOSE 3000
+CMD ["node", "server.js"]