Rename package and APKs to NilsMG4, credit Fatih, add SPECS.md

- applicationId com.evsuite.abrp -> com.stinnesbeck.nilsmg4 (the car
  build is .unstable); the Java namespace is unchanged. Installs next to
  upstream's app rather than over it.
- APK names NilsMG4-*.apk, debug builds included; build-car follows.
- OTA install-result action, cache/download names, User-Agent and log
  tags follow the new name.
- About credits fatihdonmezdev / FatihsMG4.
- SPECS.md journals what changed and what is still to do, starting
  with pointing the About link and QR code at git.stinnesbeck.com/nils/mg4.

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

SPECS.md

@@ -0,0 +1,55 @@
+# SPECS — Nils' MG4
+
+Journal for this fork of [fatihdonmezdev/FatihsMG4](https://github.com/fatihdonmezdev/FatihsMG4):
+what has been changed, and what is still to do.
+
+- Our repository: https://git.stinnesbeck.com/nils/mg4
+- Upstream: https://github.com/fatihdonmezdev/FatihsMG4 (itself a fork of malys / EVABRPUploader
+  and Leon Kernan / ABRP_Uploader). Credited in the app's About dialog.
+
+## To do
+
+- [ ] **About dialog link and QR code → https://git.stinnesbeck.com/nils/mg4.**
+      Both come from `REPOSITORY_URL` in `app/src/main/java/com/evsuite/abrp/MainActivity.java`
+      and `about_repository` in `app/src/main/res/values/strings.xml`. They still point to Fatih's
+      GitHub repository.
+- [ ] **Re-enable OTA updates against our own releases.** `RELEASES_API` in
+      `app/src/unstable/java/com/evsuite/abrp/OtaUpdater.java` points at `updates.invalid` on purpose,
+      so checks fail. The updater speaks the GitHub releases API and only allows GitHub hosts
+      (`ALLOWED_HOSTS`). For git.stinnesbeck.com it needs the host on the allowlist, and the
+      response parsing checked against that server's releases API. Release assets must be named
+      `NilsMG4-unstable-<version>.apk` with a `.sha256` sidecar (`build-car` writes both).
+- [ ] **Fix the unit tests.** They don't compile upstream: `AbrpApiTest`, `TelemetryPayloadTest`
+      and others still use `AbrpApi`/`TelemetryPayload`, which upstream commit `ea8032a` deleted.
+- [ ] **Charging currency.** Prices and costs are shown in Turkish lira (`₺/kWh`, `₺`) in
+      `pane_charging.xml` and `MainActivity.java`.
+- [ ] **Cloud consumption sync.** `CONSUMPTION_INSTALLATION_ID` in `app/build.gradle` is a fixed
+      UUID inherited from upstream. Set our own before configuring `CONSUMPTION_API_URL` /
+      `CONSUMPTION_API_TOKEN`, so our data cannot land under upstream's id.
+- [ ] **Translate the rest.** The `web/` dashboard (Next.js) and docs (`CHANGELOG.md`, `OTA.md`'s
+      message table, comments in `mise.toml`/`app/build.gradle`) are still Turkish or French.
+- [ ] **Docs still use the old package ID.** `README.md`, `OTA.md`, `CHANGELOG.md`, `mise.toml` and
+      `docs/MG4_PLATFORM_INSTALL.md` refer to `com.evsuite.abrp(.unstable)` and `FatihsMG4-*.apk`.
+- [ ] **Move hardcoded UI strings into `strings.xml`.** Many are inline in Java and layouts.
+
+## Done
+
+- 2026-10-17 — Translated the app UI from Turkish to English.
+- 2026-10-17 — Nix flake: `nix develop` provides JDK 21 and the Android SDK. `build-car` builds the
+  unstable APK and signs it with the AOSP test platform key, which the MG4 head unit uses
+  (cert SHA-256 `c8a2e9bc…192ab8`).
+- 2026-10-17 — OTA update checks disabled by pointing at an unresolvable host (see To do).
+- 2026-10-17 — Renamed to "Nils' MG4": package ID `com.stinnesbeck.nilsmg4` (`.unstable` for the car
+  build), APK names `NilsMG4-*.apk`. It installs next to the old FatihsMG4 app instead of replacing
+  it, and starts with empty settings and history.
+
+## Installing on the car
+
+```
+nix develop
+build-car
+adb push build/car/NilsMG4-unstable-<version>.apk /data/local/tmp/update.apk
+adb shell "pm install -r -f -d -t /data/local/tmp/update.apk"
+```
+
+To remove the old upstream app: `adb uninstall com.evsuite.abrp.unstable`.

app/build.gradle

@@ -31,7 +31,7 @@ android {
     }
 
     defaultConfig {
-        applicationId "com.evsuite.abrp"
+        applicationId "com.stinnesbeck.nilsmg4"
         minSdk 27
         targetSdk 36
         versionCode 56
@@ -113,7 +113,7 @@ android {
 }
 
 // Version publiée par la CI pour composer le nom de l'asset APK : ce nom DOIT être
-// comparable par l'updater ("FatihsMG4-unstable-1.0.42.apk"). Le tag de la
+// comparable par l'updater ("NilsMG4-unstable-1.0.42.apk"). Le tag de la
 // pré-release est la constante "unstable", écrasée à chaque build.
 tasks.register('printUnstableVersion') {
     doLast {
@@ -129,8 +129,11 @@ androidComponents {
                 // Le canal unstable garde un nom de fichier stable : l'updater identifie
                 // la version par le tag de la pré-release, jamais par le nom d'APK.
                 output.outputFileName.set(variant.flavorName == "unstable"
-                        ? "FatihsMG4-unstable.apk"
+                        ? "NilsMG4-unstable.apk"
-                        : "FatihsMG4-${variant.flavorName}-${output.versionName.get()}.apk")
+                        : "NilsMG4-${variant.flavorName}-${output.versionName.get()}.apk")
+            } else {
+                // Debug builds: NilsMG4-stable-debug.apk, NilsMG4-unstable-debug.apk.
+                output.outputFileName.set("NilsMG4-${variant.flavorName}-${variant.buildType}.apk")
             }
         }
     }

app/src/main/java/com/evsuite/abrp/ConsumptionCloudClient.java

@@ -28,7 +28,7 @@ import java.util.List;
  * picks up right where the old one left off instead of showing zeroes.
  */
 final class ConsumptionCloudClient {
-    private static final String TAG = "FatihsMG4.Mongo";
+    private static final String TAG = "NilsMG4.Mongo";
     private static final long CONSUMPTION_SYNC_INTERVAL_MS = 2 * 60_000L;
     private static final long CHARGE_RETRY_INTERVAL_MS = 5 * 60_000L;
     private static final long HISTORY_FETCH_INTERVAL_MS = 5 * 60_000L;

app/src/main/java/com/evsuite/abrp/ConsumptionTracker.java

@@ -216,7 +216,7 @@ final class ConsumptionTracker {
         if (cloudLifetime.km > local.km) {
             lifetime.set(cloudLifetime.km, cloudLifetime.kwh, cloudLifetime.hours, cloudLifetime.soc);
             persist();
-            Log.i("FatihsMG4.Consumption", "Lifetime baseline synced from cloud: "
+            Log.i("NilsMG4.Consumption", "Lifetime baseline synced from cloud: "
                     + cloudLifetime.km + " km (was " + local.km + " km)");
         }
     }

app/src/main/res/values/strings.xml

@@ -128,7 +128,7 @@
     <string name="about_action">About</string>
     <string name="about_title">About Nils\' MG4</string>
     <string name="about_version">Version %1$s</string>
-    <string name="about_attribution">Fork of malys / EVABRPUploader\nand Leon Kernan / ABRP_Uploader</string>
+    <string name="about_attribution">Fork of fatihdonmezdev / FatihsMG4,\nmalys / EVABRPUploader\nand Leon Kernan / ABRP_Uploader</string>
     <string name="about_repository">github.com/fatihdonmezdev/FatihsMG4</string>
     <string name="about_made_with_love">MG4 EH32 · SWI69</string>
     <string name="about_logo_description">Nils\' MG4 logo</string>

app/src/testUnstable/java/com/evsuite/abrp/OtaUpdaterTest.java

@@ -102,13 +102,13 @@ public class OtaUpdaterTest {
     @Test
     public void versionIsReadFromTheAssetName() {
         // The release tag is the constant "unstable", so the asset name carries the build.
-        assertEquals("1.0.42", OtaUpdater.versionFromAssetName("FatihsMG4-unstable-1.0.42.apk"));
+        assertEquals("1.0.42", OtaUpdater.versionFromAssetName("NilsMG4-unstable-1.0.42.apk"));
-        assertEquals("1.0.100", OtaUpdater.versionFromAssetName("FatihsMG4-unstable-1.0.100.APK"));
+        assertEquals("1.0.100", OtaUpdater.versionFromAssetName("NilsMG4-unstable-1.0.100.APK"));
     }
 
     @Test
     public void assetNameWithoutAVersionIsIgnored() {
-        assertNull(OtaUpdater.versionFromAssetName("FatihsMG4-unstable.apk"));
+        assertNull(OtaUpdater.versionFromAssetName("NilsMG4-unstable.apk"));
         assertNull(OtaUpdater.versionFromAssetName("unstable"));
     }
 
@@ -125,14 +125,14 @@ public class OtaUpdaterTest {
     public void sha256SidecarFormatsAreParsed() {
         String hash = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef";
         assertEquals(hash, OtaUpdater.parseExpectedSha256(hash,
-                "FatihsMG4-unstable-2.2.7.apk"));
+                "NilsMG4-unstable-2.2.7.apk"));
         assertEquals(hash, OtaUpdater.parseExpectedSha256(
-                hash + "  *FatihsMG4-unstable-2.2.7.apk\n",
+                hash + "  *NilsMG4-unstable-2.2.7.apk\n",
-                "FatihsMG4-unstable-2.2.7.apk"));
+                "NilsMG4-unstable-2.2.7.apk"));
         assertNull(OtaUpdater.parseExpectedSha256(hash + "  another.apk",
-                "FatihsMG4-unstable-2.2.7.apk"));
+                "NilsMG4-unstable-2.2.7.apk"));
         assertNull(OtaUpdater.parseExpectedSha256("not-a-hash",
-                "FatihsMG4-unstable-2.2.7.apk"));
+                "NilsMG4-unstable-2.2.7.apk"));
     }
 
     @Test
@@ -150,14 +150,14 @@ public class OtaUpdaterTest {
                 .put(release(true, asset("2.2.5")));
         OtaUpdater.Update update = OtaUpdater.selectUpdate(releases, "2.2.2.0-unstable");
         assertEquals("2.2.6", update.versionName);
-        assertTrue(update.apkUrl.endsWith("FatihsMG4-unstable-2.2.6.apk"));
+        assertTrue(update.apkUrl.endsWith("NilsMG4-unstable-2.2.6.apk"));
     }
 
     @Test
     public void stableDraftForeignAndUnversionedAssetsCannotWin() throws Exception {
         JSONObject foreign = asset("9.0.0").put("browser_download_url", "https://example.com/app.apk");
-        JSONObject unversioned = asset("9.0.0").put("name", "FatihsMG4-unstable.apk");
+        JSONObject unversioned = asset("9.0.0").put("name", "NilsMG4-unstable.apk");
-        JSONObject stableName = asset("9.0.0").put("name", "FatihsMG4-stable-9.0.0.apk");
+        JSONObject stableName = asset("9.0.0").put("name", "NilsMG4-stable-9.0.0.apk");
         JSONArray releases = new JSONArray()
                 .put(release(false, asset("9.0.0")))
                 .put(release(true, asset("9.0.0")).put("draft", true))
@@ -216,7 +216,7 @@ public class OtaUpdaterTest {
     }
 
     private static JSONObject asset(String version) throws Exception {
-        String name = "FatihsMG4-unstable-" + version + ".apk";
+        String name = "NilsMG4-unstable-" + version + ".apk";
         return new JSONObject().put("name", name).put("browser_download_url",
                 "https://github.com/fatihdonmezdev/FatihsMG4/releases/download/unstable/" + name);
     }

app/src/unstable/AndroidManifest.xml

@@ -27,7 +27,7 @@
             android:name=".OtaInstallResultReceiver"
             android:exported="false">
             <intent-filter>
-                <action android:name="com.evsuite.abrp.OTA_INSTALL_RESULT" />
+                <action android:name="com.stinnesbeck.nilsmg4.OTA_INSTALL_RESULT" />
             </intent-filter>
         </receiver>
     </application>

app/src/unstable/java/com/evsuite/abrp/OtaInstallResultReceiver.java

@@ -19,7 +19,7 @@ import android.widget.Toast;
  */
 public final class OtaInstallResultReceiver extends BroadcastReceiver {
 
-    static final String ACTION_INSTALL_RESULT = "com.evsuite.abrp.OTA_INSTALL_RESULT";
+    static final String ACTION_INSTALL_RESULT = "com.stinnesbeck.nilsmg4.OTA_INSTALL_RESULT";
 
     private static final String TAG = "EVABRP.Update";
 

app/src/unstable/java/com/evsuite/abrp/OtaUpdater.java

@@ -53,7 +53,7 @@ import java.security.MessageDigest;
 final class OtaUpdater {
 
     private static final String TAG = "OtaUpdater";
-    private static final String CACHE_PREFIX = "FatihsMG4-ota-";
+    private static final String CACHE_PREFIX = "NilsMG4-ota-";
 
     /**
      * Pre-releases live here; the unstable channel tracks them.
@@ -167,7 +167,7 @@ final class OtaUpdater {
 
     /**
      * Version carried by an unstable asset name:
-     * "FatihsMG4-unstable-1.0.42.apk" -> "1.0.42".
+     * "NilsMG4-unstable-1.0.42.apk" -> "1.0.42".
      *
      * The release tag is the fixed string "unstable" (one rolling pre-release), so the asset
      * name is what identifies a build. Returns null when the name carries no version.
@@ -203,7 +203,7 @@ final class OtaUpdater {
         try {
             conn.setInstanceFollowRedirects(false);
             conn.setRequestProperty("Accept", "application/vnd.github.v3+json");
-            conn.setRequestProperty("User-Agent", "FatihsMG4-Android");
+            conn.setRequestProperty("User-Agent", "NilsMG4-Android");
             conn.setConnectTimeout(TIMEOUT_MS);
             conn.setReadTimeout(TIMEOUT_MS);
             int status = conn.getResponseCode();
@@ -302,7 +302,7 @@ final class OtaUpdater {
             connection.setInstanceFollowRedirects(false);
             connection.setConnectTimeout(TIMEOUT_MS);
             connection.setReadTimeout(TIMEOUT_MS);
-            connection.setRequestProperty("User-Agent", "FatihsMG4-Android");
+            connection.setRequestProperty("User-Agent", "NilsMG4-Android");
             try {
                 int status = connection.getResponseCode();
                 if (status >= 300 && status <= 399) {
@@ -584,7 +584,7 @@ final class OtaUpdater {
         if (downloads == null || (!downloads.isDirectory() && !downloads.mkdirs())) {
             throw new IllegalStateException("Downloads directory unavailable");
         }
-        File destination = new File(downloads, "FatihsMG4-OTA-update.apk");
+        File destination = new File(downloads, "NilsMG4-OTA-update.apk");
         try (FileInputStream input = new FileInputStream(source);
              FileOutputStream output = new FileOutputStream(destination, false)) {
             byte[] buffer = new byte[64 * 1024];

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "FatihsMG4 — Android Automotive build environment";
+  description = "NilsMG4 — Android Automotive build environment";
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
@@ -57,7 +57,7 @@
               root=$(git rev-parse --show-toplevel 2>/dev/null || pwd)
               cd "$root"
               if [ ! -f app/build.gradle ]; then
-                echo "build-car: run this from the FatihsMG4 checkout" >&2
+                echo "build-car: run this from the NilsMG4 checkout" >&2
                 exit 1
               fi
 
@@ -81,10 +81,10 @@
               ./gradlew assembleUnstableDebug "$@"
               version=$(./gradlew -q printUnstableVersion "$@" | tail -1)
 
-              in=app/build/outputs/apk/unstable/debug/app-unstable-debug.apk
+              in=app/build/outputs/apk/unstable/debug/NilsMG4-unstable-debug.apk
               mkdir -p build/car
               aligned=build/car/aligned.apk
-              out="build/car/FatihsMG4-unstable-$version.apk"
+              out="build/car/NilsMG4-unstable-$version.apk"
 
               "${buildTools}/zipalign" -f -p 4 "$in" "$aligned"
               # Options come before the input APK; apksigner rejects the other order.
@@ -122,7 +122,7 @@
 
             shellHook = ''
               echo "sdk.dir=$ANDROID_HOME" > local.properties
-              echo "FatihsMG4 dev shell — JDK $(java -version 2>&1 | head -1 | cut -d'"' -f2), SDK at $ANDROID_HOME"
+              echo "NilsMG4 dev shell — JDK $(java -version 2>&1 | head -1 | cut -d'"' -f2), SDK at $ANDROID_HOME"
               echo "  ./gradlew assembleStableDebug     # debug APK"
               echo "  ./gradlew assembleUnstableDebug   # build that can update itself (OTA)"
               echo "  build-car                         # unstable build signed for the car"

settings.gradle

@@ -22,7 +22,7 @@ dependencyResolutionManagement {
     }
 }
 
-rootProject.name = "FatihsMG4"
+rootProject.name = "NilsMG4"
 include ':app'
 include ':evhardware'
 project(':evhardware').projectDir = file('EVHardware/lib')