fix(newos4): dashboard shows the real world model and stops dying after 10 s (v4.6.51)

Two defects, both verified live before/after:

1. The World Model panel always said "Not synthesized yet". The page had a
   renderer for data.worldModel and _collectDashboardData() never set it -- the
   model was right there in WorldModelModule._model. Now collected and mapped to
   the renderer's exact keys (model has modules.loaded/skills.count/memory.nodes,
   the page reads modules/skills/memoryNodes), plus changesSinceLastSnapshot and
   the recent-error sample, with an honest "not synthesized" fallback.

2. The page discarded any payload older than 10 s and its own 5 s auto-refresh
   then showed "Cannot connect to newOS4". Stale payloads are now rendered with
   their age ("Data as of 1:20:14 AM - 3m ago"), labelled amber past 5 min.

Also: the Refresh button wrote a localStorage key nobody read -> the terminal now
listens for it and re-collects (page says "No terminal tab answered" when no
terminal tab is open); storage events repaint instantly; the dead /api/dashboard
fetch (404 on all three paths, 5 s stall) is gone; `dashboard --watch` / `--stop`
re-collects every 5 s; header says the data is this browser's instance.

Verified v4.6.51: panel rows "Synthesized 34s ago / v4.6.51 / 46-22 / 136-3 /
1 nodes 0 edges / OK / none recorded"; 130 s-old payload still renders with
"- 3m ago" and no banner (previously "Cannot connect"); storage event moves the
footer 13s -> 0s; watch timer advances the payload, --stop clears it; mobile
360/390 px all OK; 0 console errors.

0 files changed, 0 insertions, 0 deletions