Add infrastructure: Terraform, Docker Compose, BRouter, CD pipeline (#2)

Terraform:
- Hetzner CX22 server with Docker, firewall (80/443/22)
- SSH key and output for server IP

Docker Compose:
- Caddy reverse proxy (auto HTTPS)
- Journal and Planner app containers
- BRouter routing engine container
- PostgreSQL + PostGIS
- Garage S3 storage

BRouter:
- Dockerfile based on eclipse-temurin:11-jre
- Segment download script for Germany (4 tiles, ~750MB)

CD Pipeline:
- Build & push Docker images to ghcr.io on main push
- Deploy step commented out (enable when server provisioned)

Scripts:
- PostgreSQL daily backup with 14-day retention
- Dockerfiles for both apps (multi-stage builds)

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

apps/planner/Dockerfile

@@ -0,0 +1,31 @@
+FROM node:24-slim AS base
+RUN corepack enable && corepack prepare pnpm@10.6.5 --activate
+WORKDIR /app
+
+FROM base AS deps
+COPY package.json pnpm-lock.yaml pnpm-workspace.yaml ./
+COPY apps/planner/package.json apps/planner/
+COPY packages/types/package.json packages/types/
+COPY packages/ui/package.json packages/ui/
+COPY packages/map/package.json packages/map/
+COPY packages/gpx/package.json packages/gpx/
+COPY packages/i18n/package.json packages/i18n/
+RUN pnpm install --frozen-lockfile
+
+FROM base AS build
+COPY --from=deps /app/node_modules ./node_modules
+COPY --from=deps /app/apps/planner/node_modules ./apps/planner/node_modules
+COPY . .
+RUN pnpm --filter @trails-cool/planner build
+
+FROM base AS runtime
+COPY --from=deps /app/node_modules ./node_modules
+COPY --from=build /app/apps/planner/build ./apps/planner/build
+COPY --from=build /app/apps/planner/server.ts ./apps/planner/server.ts
+COPY --from=build /app/apps/planner/app/lib ./apps/planner/app/lib
+COPY --from=build /app/apps/planner/package.json ./apps/planner/package.json
+
+WORKDIR /app/apps/planner
+EXPOSE 3001
+ENV PORT=3001
+CMD ["node", "server.ts"]