Bundle analyzer, task run-now/toggle/weekly, error reporter, OG image, a11y

- Bundle analyzer: @next/bundle-analyzer wired through next.config.ts,
  new `bun run analyze` script (ANALYZE=true next build).
- Scheduled tasks gain:
  - enabled flag round-tripped via a #DISABLED prefix on the crontab line
    (preserves the mc-task marker + payload for re-enable).
  - PATCH /api/schedule/tasks to toggle enabled.
  - POST /api/schedule/tasks/run to execute a task immediately via
    the same buildCommand used for the cron line (60s timeout, kills
    child on client abort).
  - Weekly preset in the UI (day-of-week selector), broader aria-labels
    on all form selects. Human-readable cron renders "Tue at 04:30"
    and next-run calc accounts for weekly.
  - Hover-reveal Run now / Enable / Disable / Remove actions; disabled
    tasks render at 60% opacity with a "disabled" badge and no next-run.
- /api/errors: minimal append-only JSONL reporter (200ms throttle, UA
  and IP captured, fields length-bounded). Falls back to a stable
  path under /home/minecraft/logs/ and never fails the client on
  logging errors.
- ErrorReporter client (production-only) listens to window.error and
  unhandledrejection, fingerprint-dedups via a bounded in-memory set,
  sends with keepalive so unloads still flush.
- app/opengraph-image.tsx: 1200x630 dynamic PNG with live status dot
  (green/red), player count, address. 60s memo on the status probe.
- A11y: aria-labels on log-line count select, scheduled-restart hour
  and minute selects, copy-server-address button (plus focus-visible
  ring). ModManager selected-mod pill upgraded to role=button with a
  real accessible name and a proper × glyph.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

components/ServerControls.tsx

@@ -243,6 +243,7 @@ function ScheduledRestart() {
         <select
           value={h}
           onChange={(e) => setHour(parseInt(e.target.value))}
+          aria-label="Restart hour"
           className="h-10 w-20 rounded-md border border-input bg-muted px-3 text-sm text-foreground"
         >
           {Array.from({ length: 24 }, (_, i) => (
@@ -255,6 +256,7 @@ function ScheduledRestart() {
         <select
           value={m}
           onChange={(e) => setMinute(parseInt(e.target.value))}
+          aria-label="Restart minute"
           className="h-10 w-20 rounded-md border border-input bg-muted px-3 text-sm text-foreground"
         >
           {[0, 15, 30, 45].map((v) => (