feat(transcribe): a non-Swedish upload skips the Swedish-only base engine and is not reconciled (#61)

The other engine transcribes alone, then the cloud fallback if it fails and the job is
still live. A cancelled job never reaches the fallback (mutation-checked).

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

internal/adapters/transcribe/ensemble.go

@@ -51,6 +51,9 @@ func (e *Ensemble) Plan() []progress.Planned {
 // progress.Reporter in ctx (a no-op when nobody listens).
 func (e *Ensemble) Transcribe(ctx context.Context, wavPath string) (domain.Transcription, error) {
 	rep := progress.From(ctx)
+	if domain.LanguageFrom(ctx) != domain.LangSwedish {
+		return e.transcribeOther(ctx, rep, wavPath)
+	}
 	b, berr := e.run(ctx, rep, "engine_a", e.base, wavPath)
 	if err := ctx.Err(); err != nil {
 		return domain.Transcription{}, err
@@ -89,6 +92,28 @@ func (e *Ensemble) Transcribe(ctx context.Context, wavPath string) (domain.Trans
 	return e.single(f, e.fallback.Name(), "both local engines failed"), nil
 }
 
+// transcribeOther handles a recording that is not Swedish (tapir#61). The base engine is
+// Swedish-only, so it never receives the audio, and with one reading there is nothing to
+// reconcile: the other engine transcribes alone, then the cloud fallback if it fails and the
+// job is still live. The phases that did not run are shown as skipped by the tracker.
+func (e *Ensemble) transcribeOther(ctx context.Context, rep progress.Reporter, wavPath string) (domain.Transcription, error) {
+	t, err := e.run(ctx, rep, "engine_b", e.alt, wavPath)
+	if err == nil {
+		t.Endpoint = e.alt.Name()
+		return t, nil
+	}
+	if e.fallback == nil || ctx.Err() != nil {
+		return domain.Transcription{}, fmt.Errorf("%s: %w", e.alt.Name(), err)
+	}
+	f, ferr := e.run(ctx, rep, "fallback", e.fallback, wavPath)
+	if ferr != nil {
+		return domain.Transcription{}, errors.Join(
+			fmt.Errorf("%s: %w", e.alt.Name(), err), fmt.Errorf("%s: %w", e.fallback.Name(), ferr))
+	}
+	f.Endpoint = e.fallback.Name()
+	return f, nil
+}
+
 // run is one engine call, reported as a phase. A job that was stopped is not a broken
 // engine, so a cancelled context is never reported as a failed phase.
 func (e *Ensemble) run(ctx context.Context, rep progress.Reporter, key string, be Backend, wav string) (domain.Transcription, error) {