Code review fixes: app 2.9.0, server 2.2.0

Telemetry no longer loses queued batches. The server drops a bad value,
or a sample without a plausible time, instead of rejecting the batch,
and answers 200 with what it dropped. The app sends only values inside
the server's ranges (speed as a magnitude, so reversing is fine) and no
samples before the head unit's clock is set.

Server:
- Pairing hands out and accepts a token only after the device is saved;
  a failed save leaves the request pending.
- A paired token serves only the installation id it was paired with
  (403 otherwise); the shared INGEST_TOKEN still serves any.
- Wrong-password lockouts and open pairing requests are limited per
  client address (last X-Forwarded-For entry), so a stranger cannot
  lock the owner out; a car starting again replaces its own request.
- ABRP forwarding skips samples stamped ahead of the server's clock,
  which used to stop it until a restart.

App:
- Settings written to plaintext during a keystore failure move back
  into encrypted storage; the stored installation id wins.
- The installation id is derived from ANDROID_ID on first start, so a
  reinstall finds its history; a stored or imported id still wins.
- The scanned config file is deleted after import (it holds the token).
- GPS stops while live telemetry is off or the server unconfigured, and
  pauses while parked and idle, keeping the fix the car parked with.
- Range estimates use the monotonic clock.
- One HTTP helper (ServerHttp) for telemetry, sync and pairing.
- Last Turkish strings translated; mise logs shows the NilsMG4 tags.

Grafana reads InfluxDB with its own read-only token (new grafana-influx
Secret, created by hand as described in k8s/README.md).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QLJfZQZeAKAwSqViTmLzki

server/logic_test.go

@@ -75,6 +75,18 @@ func TestForwarderPicksOnlyTheNewestFreshSampleOncePerInterval(t *testing.T) {
 	if _, ok := fresh.pick([]TelemetrySample{{UTC: testNowS - 600}}, now); ok {
 		t.Fatal("forwarded a stale sample")
 	}
+	// A sample from a clock a day ahead is skipped, and does not block the real ones after it.
+	ahead := &Forwarder{MinInterval: 5 * time.Second}
+	got, ok = ahead.pick([]TelemetrySample{{UTC: testNowS + 86400}, {UTC: testNowS - 1}}, now)
+	if !ok || got.UTC != testNowS-1 {
+		t.Fatalf("picked %+v %v", got, ok)
+	}
+	if _, ok := ahead.pick([]TelemetrySample{{UTC: testNowS + 86400}}, now.Add(time.Minute)); ok {
+		t.Fatal("forwarded a sample from the future")
+	}
+	if _, ok := ahead.pick([]TelemetrySample{{UTC: testNowS + 60}}, now.Add(time.Minute)); !ok {
+		t.Fatal("a real sample after a future one was not forwarded")
+	}
 }
 
 func TestForwarderPutsCredentialsInTheBodyNotTheURL(t *testing.T) {