Make module-stage LLM handling resilient and report warnings

internal/modules/spoken_word/module_test.go

@@ -132,6 +132,7 @@ func TestSpokenWordModuleValidatorChain(t *testing.T) {
 		got = append(got, v.Name())
 	}
 	want := []string{
+		"proposal_shape",
 		"no_effect",
 		"original_text_presence",
 		"confidence_threshold",
@@ -188,7 +189,7 @@ func TestSpokenWordModuleProposeMapsCorrectionsAndWritesDiagnostics(t *testing.T
 	if len(client.calls) != 1 || client.calls[0].StageName != "spoken_word:proposal" {
 		t.Fatalf("expected one spoken_word:proposal call, got %+v", client.calls)
 	}
-	if len(out) != 1 || out[0].CorrectedText != "I think" {
+	if len(out.Proposals) != 1 || out.Proposals[0].CorrectedText != "I think" {
 		t.Fatalf("unexpected proposals: %+v", out)
 	}
 	diagFiles, globErr := filepath.Glob(filepath.Join(diagDir, "spoken_word", "*proposal*response-payload.json"))