Bug fixes, arr cleanup API-driven scan, shared JS formatters

Bug fixes:
- fallback.sh: escape sed metacharacters (\ & |) in state_set values
- common.sh: parse PID from lock file content correctly (handles pid:metadata format)
- unraid_api_key_renew.sh: fix path depth (../../../) and sync registry key to conf when stale
- stop.php: only clear pid/status if process is actually dead — D-state survives SIGKILL
- array_started.sh: check ARRAY_START_SCRIPTS empty before printing launch header

Arr cleanup:
- radarr_cleanup.sh / sonarr_cleanup.sh: fetch root folders from arr API instead of
  reverse-looking up the path map — handles multi-root-folder setups correctly

UI:
- varaverk.js: extract shared formatters (_relTime, _fmtBytes, _sz, _uptime, _gb, _tb, _n)
- arrs.php / partnership.php: use shared formatters, remove duplicates
- arrs.php / fallback.php: show error message on fetch failure instead of silent empty
- docker.php: disable rename input during request, restore original value on failure
- setup.php: abort controller timeout on detect fetch
- partnership.php: remove Re-run Phase 2 button opacity dimming

Plugin/unraid/js/varaverk.js

@@ -1,6 +1,47 @@
 // Varaverk — shared JS utilities
 // Page-specific JS lives inline in each page partial.
 
+// ── Shared formatters ────────────────────────────────────────────────────────
+const _GB = 1073741824, _MB = 1048576, _TB = 1099511627776;
+
+// Relative timestamp → "just now" / "5m ago" / "yesterday" / "3d ago"
+function _relTime(ts) {
+  if (!ts) return '—';
+  const d = Math.floor(Date.now() / 1000) - ts;
+  if (d < 60)     return 'just now';
+  if (d < 3600)   return Math.floor(d / 60) + 'm ago';
+  if (d < 86400)  return Math.floor(d / 3600) + 'h ago';
+  if (d < 172800) return 'yesterday';
+  return Math.floor(d / 86400) + 'd ago';
+}
+
+// Bytes → human-readable size (GB / MB / KB)
+function _fmtBytes(b) {
+  if (!b) return '—';
+  if (b >= _GB) return (b / _GB).toFixed(1) + ' GB';
+  if (b >= _MB) return (b / _MB).toFixed(0) + ' MB';
+  return (b / 1024).toFixed(0) + ' KB';
+}
+
+// Bytes → auto-scale TB / GB / MB
+function _sz(b) {
+  if (!b) return '—';
+  if (b >= _TB) return (b / _TB).toFixed(1) + ' TB';
+  if (b >= _GB) return (b / _GB).toFixed(1) + ' GB';
+  return (b / _MB).toFixed(0) + ' MB';
+}
+
+function _gb(b)  { return !b ? '—' : (b / _GB).toFixed(1) + ' GB'; }
+function _tb(b)  { return !b ? '—' : (b / _TB).toFixed(2) + ' TB'; }
+function _n(v)   { return v == null ? '—' : Number(v).toLocaleString(); }
+
+// Seconds → uptime string: "2d 3h 5m" / "3h 5m" / "5m"
+function _uptime(sec) {
+  if (!sec) return '—';
+  const d = Math.floor(sec / 86400), h = Math.floor((sec % 86400) / 3600), m = Math.floor((sec % 3600) / 60);
+  return d > 0 ? `${d}d ${h}h ${m}m` : h > 0 ? `${h}h ${m}m` : `${m}m`;
+}
+
 // Flash a status element briefly then fade
 function vvFlashStatus(el, msg, ok) {
   el.textContent = msg;