furiosa 551da0b159 fix(version): add file-based caching to prevent bd version contention ...

Under high concurrency (17+ agents), the bd version check spawns
multiple git subprocesses per invocation, causing timeouts when
85-120+ git processes compete for resources.

This fix:
- Caches successful version checks to ~/.cache/gastown/beads-version.json
- Uses cached results for 24 hours to avoid subprocess spawning
- On timeout, uses stale cache if available or gracefully degrades
- Prints warning when using cached/degraded path

Fixes: https://github.com/steveyegge/gastown/issues/503

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-25 11:15:29 -08:00

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