add clear queue button on execute page

deletes all pending jobs, reverts their review plans back to pending so they
can be re-reviewed and re-approved.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/api/execute.ts

@@ -115,6 +115,20 @@ app.post('/job/:id/cancel', (c) => {
 	return c.json({ ok: true });
 });
 
+// ─── Clear queue ──────────────────────────────────────────────────────────────
+
+app.post('/clear', (c) => {
+	const db = getDb();
+	// Revert review plans for pending jobs back to 'pending' so they can be re-approved
+	db.prepare(`
+		UPDATE review_plans SET status = 'pending', reviewed_at = NULL
+		WHERE item_id IN (SELECT item_id FROM jobs WHERE status = 'pending')
+		AND status = 'approved'
+	`).run();
+	const result = db.prepare("DELETE FROM jobs WHERE status = 'pending'").run();
+	return c.json({ ok: true, cleared: result.changes });
+});
+
 // ─── SSE ──────────────────────────────────────────────────────────────────────
 
 app.get('/events', (c) => {

src/features/execute/ExecutePage.tsx

@@ -54,6 +54,7 @@ export function ExecutePage() {
 	}, []);
 
 	const startAll = async () => { await api.post('/api/execute/start'); load(); };
+	const clearQueue = async () => { await api.post('/api/execute/clear'); load(); };
 	const runJob = async (id: number) => { await api.post(`/api/execute/job/${id}/run`); load(); };
 	const cancelJob = async (id: number) => { await api.post(`/api/execute/job/${id}/cancel`); load(); };
 	const assignNode = async (jobId: number, nodeId: number | null) => {
@@ -86,6 +87,7 @@ export function ExecutePage() {
 
 			<div className="flex gap-3 mb-6">
 				{pending > 0 && <Button onClick={startAll}>▶ Run all pending</Button>}
+				{pending > 0 && <Button variant="secondary" onClick={clearQueue}>✕ Clear queue</Button>}
 				{jobs.length === 0 && (
 					<p className="text-gray-500 m-0">
 						No jobs yet. Go to <Link to="/review">Review</Link> and approve items first.