refactor(transcript): drop Tonemark rewrite

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/lib/server/pipeline.ts

@@ -96,15 +96,13 @@ async function runJob(
 
 		if (captionSegments) {
 			// Caption fast path — skip whisper
-			const { deduplicateSegments } = await import('./postprocess.js');
 			const { writeOutputs } = await import('./formatter.js');
-			const segments = deduplicateSegments(captionSegments);
-			const paths = await writeOutputs(segments, title, jobId);
+			const paths = await writeOutputs(captionSegments, title, jobId);
 			updateJob({
 				id: jobId,
 				status: 'done',
 				progress: 100,
-				segmentsJson: JSON.stringify(segments),
+				segmentsJson: JSON.stringify(captionSegments),
 				outputDir: paths.srt.replace(/\/[^/]+$/, '')
 			});
 			emitProgress(jobId, { type: 'done' });