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>

docker/brouter/Dockerfile

@@ -0,0 +1,27 @@
+FROM eclipse-temurin:11-jre-jammy
+
+WORKDIR /brouter
+
+# Download latest BRouter release
+ARG BROUTER_VERSION=1.7.7
+RUN apt-get update && apt-get install -y --no-install-recommends wget unzip \
+    && wget -q "https://github.com/abrensch/brouter/releases/download/${BROUTER_VERSION}/brouter-${BROUTER_VERSION}.zip" \
+    && unzip "brouter-${BROUTER_VERSION}.zip" \
+    && rm "brouter-${BROUTER_VERSION}.zip" \
+    && apt-get purge -y wget unzip && apt-get autoremove -y && rm -rf /var/lib/apt/lists/*
+
+# Create directories for segments and profiles
+RUN mkdir -p /data/segments /data/profiles
+
+# Copy default profiles from release
+RUN cp -r profiles2/* /data/profiles/ 2>/dev/null || true
+
+EXPOSE 17777
+
+# BRouter server: <segmentdir> <profiledir> <customprofiledir> <port> <maxthreads>
+CMD ["java", "-Xmx512M", "-Xms128M", "-Xmn32M", \
+     "-DmaxRunningTime=300", \
+     "-cp", "brouter.jar", \
+     "btools.server.RouteServer", \
+     "/data/segments", "/data/profiles", "/data/profiles", \
+     "17777", "4"]