feat: add retry/delete for jobs

- db.ts: add resetJob() and deleteJob() statements + exports
- pipeline.ts: export retryJob() — resets job state and re-runs pipeline
- DELETE /api/jobs/[id]: hard-delete terminal jobs (done/failed/cancelled);
  keep cancel-only behavior for active jobs
- POST /api/jobs/[id]/retry: new endpoint; validates failed/cancelled URL job,
  resets and re-runs via retryJob()
- jobs/[id]/+page.svelte: wire Cancel/Retry/Delete buttons with fetch calls;
  fix hardcoded ACCENT → accent store
- jobs/+page.svelte: per-row Retry+Delete icon buttons (visible on hover);
  fix hardcoded ACCENT → accent store

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

src/lib/server/db.ts

@@ -59,6 +59,15 @@ const stmts = {
 		UPDATE jobs SET status = @status, progress = @progress, updated_at = datetime('now')
 		WHERE id = @id
 	`),
+	resetJob: db.prepare(`
+		UPDATE jobs SET
+			status = 'pending', progress = 0, error = NULL,
+			mean_volume = NULL, whisper_job_id = NULL,
+			output_dir = NULL, segments_json = NULL,
+			updated_at = datetime('now')
+		WHERE id = @id
+	`),
+	deleteJob: db.prepare('DELETE FROM jobs WHERE id = ?'),
 	getJob: db.prepare('SELECT * FROM jobs WHERE id = ?'),
 	listJobs: db.prepare('SELECT * FROM jobs ORDER BY created_at DESC, rowid DESC LIMIT 100'),
 	upsertSub: db.prepare(`
@@ -135,3 +144,11 @@ export function getAllSubscriptions(): PushSubscription[] {
 export function deletePushSubscription(endpoint: string): void {
 	stmts.deleteSub.run(endpoint);
 }
+
+export function resetJob(id: string): void {
+	stmts.resetJob.run({ id });
+}
+
+export function deleteJob(id: string): void {
+	stmts.deleteJob.run(id);
+}

src/lib/server/pipeline.ts

@@ -1,4 +1,4 @@
-import { createJob, updateJob, setJobStatus, getJob } from './db.js';
+import { createJob, updateJob, setJobStatus, getJob, resetJob } from './db.js';
 import { downloadYouTube, saveUploadedFile, cleanupJobTmp } from './downloader.js';
 import { prepareAudio, cleanup as cleanupFiles } from './audio.js';
 import { submitJob, streamJob } from './whisper.js';
@@ -50,6 +50,16 @@ export async function startUploadJob(
 	return job.id;
 }
 
+/** Retry a failed/cancelled YouTube job by resetting and re-running the pipeline. */
+export async function retryJob(jobId: string): Promise<void> {
+	const job = getJob(jobId);
+	if (!job) throw new Error('Job not found');
+	resetJob(jobId);
+	runJob(jobId, { type: 'youtube', url: job.source }, job.audioMode as AudioMode).catch((err) => {
+		console.error(`[pipeline] retry job ${jobId} failed:`, err);
+	});
+}
+
 async function runJob(
 	jobId: string,
 	input: { type: 'youtube'; url: string } | { type: 'upload'; buffer: Buffer; filename: string },

src/routes/api/jobs/[id]/+server.ts

@@ -1,5 +1,6 @@
 import { json, error } from '@sveltejs/kit';
-import { getJob, setJobStatus } from '$lib/server/db.js';
+import { getJob, setJobStatus, deleteJob } from '$lib/server/db.js';
+import { rm } from 'fs/promises';
 
 export async function GET({ params }) {
 	const job = getJob(params.id);
@@ -7,12 +8,19 @@ export async function GET({ params }) {
 	return json(job);
 }
 
+const ACTIVE = new Set(['pending', 'downloading', 'preparing', 'transcribing', 'processing']);
+
 export async function DELETE({ params }) {
 	const job = getJob(params.id);
 	if (!job) throw error(404, 'Job not found');
-	if (job.status === 'done' || job.status === 'failed') {
-		throw error(409, 'Job already completed');
+
+	if (ACTIVE.has(job.status)) {
+		// Cancel active job (keeps DB record)
+		setJobStatus(params.id, 'cancelled', 0);
+	} else {
+		// Hard-delete terminal job + clean up output files
+		deleteJob(params.id);
+		if (job.outputDir) rm(job.outputDir, { recursive: true, force: true }).catch(() => {});
 	}
-	setJobStatus(params.id, 'cancelled', 0);
 	return new Response(null, { status: 204 });
 }

src/routes/api/jobs/[id]/retry/+server.ts

@@ -0,0 +1,16 @@
+import { json, error } from '@sveltejs/kit';
+import { getJob } from '$lib/server/db.js';
+import { retryJob } from '$lib/server/pipeline.js';
+
+export async function POST({ params }) {
+	const job = getJob(params.id);
+	if (!job) throw error(404, 'Job not found');
+	if (!['failed', 'cancelled'].includes(job.status)) {
+		throw error(409, 'Only failed or cancelled jobs can be retried');
+	}
+	if (!job.source.startsWith('http')) {
+		throw error(422, 'Cannot retry a file upload — please re-upload the file');
+	}
+	await retryJob(params.id);
+	return json({ ok: true });
+}

src/routes/jobs/+page.svelte

@@ -3,8 +3,9 @@
 	import type { Job } from '$lib/types.js';
 	import SourceIcon from '$lib/components/SourceIcon.svelte';
 	import Waveform from '$lib/components/Waveform.svelte';
+	import { accent } from '$lib/accent.js';
 
-	const ACCENT = '#cdf24e';
+	const ACCENT = $derived($accent.value);
 
 	let jobs = $state<Job[]>([]);
 	let loading = $state(true);
@@ -51,6 +52,30 @@
 		if (res.ok) jobs = await res.json();
 		loading = false;
 	});
+
+	async function deleteJob(e: MouseEvent, job: Job) {
+		e.preventDefault();
+		e.stopPropagation();
+		if (!confirm(`Delete "${job.title || job.id}"?`)) return;
+		const res = await fetch(`/api/jobs/${job.id}`, { method: 'DELETE' });
+		if (res.ok) jobs = jobs.filter((j) => j.id !== job.id);
+	}
+
+	async function retryJob(e: MouseEvent, job: Job) {
+		e.preventDefault();
+		e.stopPropagation();
+		const res = await fetch(`/api/jobs/${job.id}/retry`, { method: 'POST' });
+		if (res.ok) {
+			const updated = await fetch(`/api/jobs/${job.id}`);
+			if (updated.ok) {
+				const j = await updated.json();
+				jobs = jobs.map((x) => (x.id === job.id ? j : x));
+			}
+		} else {
+			const body = await res.json().catch(() => ({}));
+			alert(body.message ?? 'Retry failed');
+		}
+	}
 </script>
 
 <svelte:head>
@@ -106,6 +131,26 @@
 					{:else}
 						<div class="job-pct mono" style="color: {statusColor[job.status]}">{job.status}</div>
 					{/if}
+
+					<!-- Row actions -->
+					<div class="row-actions">
+						{#if ['failed', 'cancelled'].includes(job.status) && job.source?.startsWith('http')}
+							<button
+								class="row-btn accent"
+								onclick={(e) => retryJob(e, job)}
+								aria-label="Retry"
+								title="Retry"
+							>↺</button>
+						{/if}
+						{#if ['done', 'failed', 'cancelled'].includes(job.status)}
+							<button
+								class="row-btn danger"
+								onclick={(e) => deleteJob(e, job)}
+								aria-label="Delete"
+								title="Delete"
+							>✕</button>
+						{/if}
+					</div>
 				</a>
 			{/each}
 		</div>
@@ -201,6 +246,48 @@
 		flex-shrink: 0;
 	}
 
+	.row-actions {
+		display: flex;
+		gap: 4px;
+		flex-shrink: 0;
+		opacity: 0;
+		transition: opacity 0.15s;
+	}
+
+	.job-row:hover .row-actions {
+		opacity: 1;
+	}
+
+	.row-btn {
+		width: 28px;
+		height: 28px;
+		border-radius: 6px;
+		border: 1px solid transparent;
+		font-size: 12px;
+		cursor: pointer;
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		font-family: inherit;
+		transition: background 0.15s;
+	}
+	.row-btn.danger {
+		border-color: rgba(255, 90, 90, 0.3);
+		background: rgba(255, 90, 90, 0.08);
+		color: #ff8a8a;
+	}
+	.row-btn.danger:hover {
+		background: rgba(255, 90, 90, 0.2);
+	}
+	.row-btn.accent {
+		border-color: color-mix(in oklab, var(--accent) 40%, transparent);
+		background: color-mix(in oklab, var(--accent) 10%, transparent);
+		color: var(--accent);
+	}
+	.row-btn.accent:hover {
+		background: color-mix(in oklab, var(--accent) 20%, transparent);
+	}
+
 	@media (max-width: 768px) {
 		.page {
 			padding: 20px 16px;

src/routes/jobs/[id]/+page.svelte

@@ -4,8 +4,9 @@
 	import type { Job, Segment } from '$lib/types.js';
 	import SourceIcon from '$lib/components/SourceIcon.svelte';
 	import Waveform from '$lib/components/Waveform.svelte';
+	import { accent } from '$lib/accent.js';
 
-	const ACCENT = '#cdf24e';
+	const ACCENT = $derived($accent.value);
 
 	const jobId = $derived($page.params.id);
 	let job = $state<Job | null>(null);
@@ -108,6 +109,36 @@
 
 	const formats = ['srt', 'txt', 'md', 'json'] as const;
 	const isActive = $derived(!job || !['done', 'failed', 'cancelled'].includes(job.status));
+	const isTerminal = $derived(job !== null && ['done', 'failed', 'cancelled'].includes(job.status));
+	const canRetry = $derived(
+		job !== null &&
+		['failed', 'cancelled'].includes(job.status) &&
+		(job.source?.startsWith('http') ?? false)
+	);
+
+	async function cancelJob() {
+		if (!job) return;
+		await fetch(`/api/jobs/${job.id}`, { method: 'DELETE' });
+		await loadJob();
+	}
+
+	async function deleteJob() {
+		if (!job || !confirm(`Delete job "${job.title || job.id}"?`)) return;
+		const res = await fetch(`/api/jobs/${job.id}`, { method: 'DELETE' });
+		if (res.ok) window.location.href = '/';
+	}
+
+	async function retryJobAction() {
+		if (!job) return;
+		const res = await fetch(`/api/jobs/${job.id}/retry`, { method: 'POST' });
+		if (res.ok) {
+			await loadJob();
+			openStream();
+		} else {
+			const body = await res.json().catch(() => ({}));
+			alert(body.message ?? 'Retry failed');
+		}
+	}
 </script>
 
 <svelte:head>
@@ -143,11 +174,17 @@
 					{#if job.meanVolume != null}· {job.meanVolume.toFixed(1)} dBFS{/if}
 				</div>
 			</div>
+			<div class="job-actions">
 			{#if isActive}
-				<form method="POST" action="/api/jobs/{job.id}?_method=DELETE">
-					<button type="button" class="btn-cancel" aria-label="Cancel job">Cancel</button>
-				</form>
+				<button class="btn-job-action danger" onclick={cancelJob} aria-label="Cancel job">Cancel</button>
 			{/if}
+			{#if canRetry}
+				<button class="btn-job-action accent" onclick={retryJobAction} aria-label="Retry job">↺ Retry</button>
+			{/if}
+			{#if isTerminal}
+				<button class="btn-job-action danger" onclick={deleteJob} aria-label="Delete job">Delete</button>
+			{/if}
+		</div>
 		</div>
 
 		<!-- ── Progress block ────────────────────────────────── -->
@@ -377,20 +414,37 @@
 		text-overflow: ellipsis;
 	}
 
-	.btn-cancel {
+	.job-actions {
+		display: flex;
+		gap: 8px;
+		flex-shrink: 0;
+	}
+
+	.btn-job-action {
 		padding: 8px 14px;
 		border-radius: 8px;
-		border: 1px solid rgba(255, 90, 90, 0.3);
-		background: rgba(255, 90, 90, 0.08);
-		color: #ff8a8a;
 		font-size: 12.5px;
 		font-family: inherit;
 		cursor: pointer;
 		white-space: nowrap;
+		transition: background 0.15s;
 	}
-	.btn-cancel:hover {
+	.btn-job-action.danger {
+		border: 1px solid rgba(255, 90, 90, 0.3);
+		background: rgba(255, 90, 90, 0.08);
+		color: #ff8a8a;
+	}
+	.btn-job-action.danger:hover {
 		background: rgba(255, 90, 90, 0.15);
 	}
+	.btn-job-action.accent {
+		border: 1px solid color-mix(in oklab, var(--accent) 40%, transparent);
+		background: color-mix(in oklab, var(--accent) 10%, transparent);
+		color: var(--accent);
+	}
+	.btn-job-action.accent:hover {
+		background: color-mix(in oklab, var(--accent) 18%, transparent);
+	}
 
 	/* ── Progress card ──────────────────────────────────────── */
 	.progress-card {