The pql-backed sidebar panes fetch once on first build. If that fetch
fired too early — the planning DB still settling at startup, or a db-busy
SQLite lock under concurrent pql writes (pql exits 69) — the pane showed
"pql … failed" and stayed there until a manual refresh re-fired it.
Retry transient failures at the single chokepoint, PqlClient._run: on a
busy/locked signal (exit 69, or stderr mentioning database is locked /
busy) retry a few times with short backoff before throwing. Genuine
errors aren't busy, so they still surface immediately.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
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