Rename app and persist all-time consumption to MongoDB

server/README.md

@@ -0,0 +1,21 @@
+# FatihsMG4 consumption API
+
+The Android app never connects to MongoDB directly and never contains a MongoDB URI. This
+service accepts authenticated all-time totals and upserts them into the `consumption` collection.
+
+## Run
+
+1. Copy `.env.example` to `.env` and fill in the MongoDB Atlas URI and a random API token.
+2. Export the variables (Node does not load `.env` automatically), then run `npm install` and
+   `npm start`.
+3. Build the Android app with the public HTTPS service address and the same token:
+
+   ```sh
+   CONSUMPTION_API_URL=https://your-api.example.com \
+   CONSUMPTION_API_TOKEN=your-random-token \
+   ./gradlew assembleUnstableRelease
+   ```
+
+If either Android build variable is missing, cloud sync is disabled and local consumption
+tracking continues unchanged. MongoDB receives one continuously updated document per installation,
+containing all-time `km`, `kwh`, `hours`, and `socDrop` totals plus the manually entered `sohPercent`.