feat(companion): 60s mesh probe window + session pre-warm from the VPN service

Implements the app-side recommendations from the node diagnosis
(HANDOFF-2026-07-23): first session through the public tree takes 15s+
when it works at all, far beyond the old ~8s probe window.

- connect(): mesh ULA probed inside a 60s budget, 15s per-phase timeouts.
- ArchyVpnService: session warmer probes every saved node ULA as soon as
  the tunnel is up (5s cadence first minute, then 60s keep-warm) so the
  UI hits a warm session and it never idles out.
- Served APK: 0.5.5 (vc25); handoff updated with 25-ping evidence that
  public-tree discovery currently fails outright (supports the
  private-tree infra decision).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Dorian
2026-07-23 23:36:34 +01:00
co-authored by Claude Fable 5
parent 82fcccd113
commit 75ecd1d3ea
5 changed files with 89 additions and 14 deletions
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