simplify: backend derives lifetime from day totals, app stops sending it

- backend daily PUT: no longer $set lifetime (app's local counter is unreliable after APK wipe)
- backend history GET: derives lifetime as sum of all days' totals, returns it at response level
- app: stops sending lifetime in chunks; reads it from history response
- app: refresh button on consumption pane + 'Şimdi yükle' on log pane (manual cache flush)

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

web/src/app/v1/consumption/daily/route.ts

@@ -9,11 +9,12 @@ export const dynamic = "force-dynamic";
 /**
  * Upsert on (installationId, date), incrementally. The car sends a 2-minute delta chunk
  * (not a cumulative total), so each PUT adds to the day's running totals rather than
- * overwriting them. Lifetime is a snapshot — the latest one wins, so it is $set not $inc.
+ * overwriting them. The app does NOT send lifetime — the backend derives it as the sum of
+ * all days' totals when history is read, so an APK wipe that zeroes the local counter can
+ * never corrupt the cloud's lifetime.
  *
  * $setOnInsert must not touch `day` at all: $inc on `day.km` and $setOnInsert on `day`
- * conflict in MongoDB ("Updating the path 'day' would create a conflict at 'day'").
- * On an insert, $inc treats a missing field as 0 and adds to it, so no seed is needed.
+ * conflict in MongoDB. On an insert, $inc treats a missing field as 0 and adds to it.
  */
 export async function PUT(request: Request) {
   const denied = requireIngest(request);
@@ -24,7 +25,6 @@ export async function PUT(request: Request) {
     const collection = await consumptionCollection();
     const updatedAt = new Date();
     const $set: Record<string, unknown> = { updatedAt };
-    if (record.lifetime) $set.lifetime = record.lifetime;
     if (record.sohPercent !== undefined) $set.sohPercent = record.sohPercent;
     await collection.updateOne(
       { installationId: record.installationId, date: record.date },

web/src/app/v1/consumption/history/[installationId]/route.ts

@@ -27,6 +27,17 @@ export async function GET(request: Request, context: { params: Promise<{ install
       .sort({ date: -1 })
       .limit(400)
       .toArray();
-    return NextResponse.json({ records });
+    // Lifetime = sum of every day's totals. Derived, never stored, so a corrupted or
+    // stale lifetime field in any single document cannot poison the total.
+    const lifetime = records.reduce(
+      (sum, r) => ({
+        km: sum.km + (r.day?.km ?? 0),
+        kwh: sum.kwh + (r.day?.kwh ?? 0),
+        hours: sum.hours + (r.day?.hours ?? 0),
+        socDrop: sum.socDrop + (r.day?.socDrop ?? 0),
+      }),
+      { km: 0, kwh: 0, hours: 0, socDrop: 0 },
+    );
+    return NextResponse.json({ records, lifetime });
   });
 }