lnd's RPC isn't ready until its wallet auto-unlocks on (re)start, which lags the
container 'running' state — single-shot lncli getinfo raced that window and
false-failed (gate tests 60 + 85). Retry up to ~90s like a health probe. lnd is
functional (getinfo returns cleanly once ready).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>