feat: include job config and run history in export/import backup

Export bumped to version 3, now includes jobs (with raw unmasked
config) and job_runs arrays. Import restores them when present and
restarts the scheduler. Payloads without a jobs key leave jobs
untouched, keeping v1/v2 backups fully compatible.

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

server/db.js

@@ -235,6 +235,33 @@ export function getAllHistory() {
   return db.prepare('SELECT * FROM instance_history ORDER BY vmid, changed_at').all();
 }
 
+export function getAllJobs() {
+  return db.prepare('SELECT id, key, name, description, enabled, schedule, config FROM jobs ORDER BY id').all();
+}
+
+export function getAllJobRuns() {
+  return db.prepare('SELECT * FROM job_runs ORDER BY job_id, id').all();
+}
+
+export function importJobs(jobRows, jobRunRows = []) {
+  db.exec('BEGIN');
+  db.exec('DELETE FROM job_runs');
+  db.exec('DELETE FROM jobs');
+  const insertJob = db.prepare(`
+    INSERT INTO jobs (id, key, name, description, enabled, schedule, config)
+    VALUES (@id, @key, @name, @description, @enabled, @schedule, @config)
+  `);
+  for (const j of jobRows) insertJob.run(j);
+  if (jobRunRows.length) {
+    const insertRun = db.prepare(`
+      INSERT INTO job_runs (id, job_id, started_at, ended_at, status, result)
+      VALUES (@id, @job_id, @started_at, @ended_at, @status, @result)
+    `);
+    for (const r of jobRunRows) insertRun.run(r);
+  }
+  db.exec('COMMIT');
+}
+
 export function getConfig(key, defaultVal = '') {
   const row = db.prepare('SELECT value FROM config WHERE key = ?').get(key);
   return row ? row.value : defaultVal;