test(e2e): two engines + local reconciler, live

TAPIR_E2E_RECONCILE=1 runs pianissimo + kb-whisper + gemma4-26b on the audio and
asserts the reconciliation is recorded, every contributor is named in the endpoint, and
the page says what was done. Run 2026-10-01 on 82 s of synthetic Swedish: 3 disputes, all
3 changed; against the known script 2 were right (virket, a missing 'procent') and 1 was
WRONG (Maria -> Vi replaced a correct base reading). A smoke test, not a measurement.

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

cmd/tapir/e2e_upload_test.go

@@ -74,6 +74,11 @@ func TestE2E_UploadTranscribeAndChat(t *testing.T) {
 	cfg.GatewayKey = key
 	cfg.UploadsEnabled = true
 	cfg.UploadTmpDir = filepath.Join(t.TempDir(), "spool")
+	if os.Getenv("TAPIR_E2E_RECONCILE") == "1" {
+		// Two engines and a local model, as ADR-034 describes.
+		cfg.ReconcileBaseModel = envOrDefault("TAPIR_E2E_BASE_MODEL", "iguana/pianissimo")
+		cfg.ReconcileModel = envOrDefault("TAPIR_E2E_RECONCILE_MODEL", "iguana/gemma4-26b")
+	}
 	cfg.FFmpegBin = envOrDefault("TAPIR_E2E_FFMPEG", "ffmpeg")
 	cfg.FFprobeBin = envOrDefault("TAPIR_E2E_FFPROBE", "ffprobe")
 
@@ -134,6 +139,15 @@ func TestE2E_UploadTranscribeAndChat(t *testing.T) {
 		`SELECT status, endpoint, content, audio_seconds, had_video FROM uploaded_transcripts WHERE user_id = $1`, uid).
 		Scan(&status, &endpoint, &content, &secs, &hadVideo))
 	t.Logf("done: endpoint=%s audio_s=%.1f transcript_chars=%d had_video=%v", endpoint, secs, len(content), hadVideo)
+	if os.Getenv("TAPIR_E2E_RECONCILE") == "1" {
+		var recJSON string
+		require.NoError(t, raw.QueryRow(ctx,
+			`SELECT COALESCE(reconciliation::text, 'NULL') FROM uploaded_transcripts WHERE user_id = $1`, uid).Scan(&recJSON))
+		require.NotEqual(t, "NULL", recJSON, "a two-engine run must record its reconciliation")
+		t.Logf("reconciliation: %.600s", recJSON)
+		assert.Contains(t, endpoint, "reconciled by", "every contributor is named in the endpoint")
+		assert.Contains(t, page, "Reconciled from two transcripts")
+	}
 	if os.Getenv("TAPIR_E2E_HAD_VIDEO") == "1" {
 		// A Teams meeting with the camera off: a video file whose audio is what matters.
 		assert.True(t, hadVideo, "the file had a video track and the row must say so")