th-2e1ad2: batch-load pearl labels — session start 5.7s → 0.7s#243
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…tart 5.7s `th prime` (SessionStart) runs `th pearls ready`, which returned ~40 open pearls then fired one more Dolt query PER pearl to load labels. Each Dolt call cold-boots (~140ms), so list-style reads cost 1 + N round-trips — `th agent list` (1 query) 0.5s vs `th pearls list` (1+N) 4.7s against the same DB. Add `attach_labels(Vec<Pearl>)`: one `SELECT ... WHERE pearl_id IN (...)` groups labels in Rust, order preserved, label-sorted. Wire it into ready/list/blocked/ search/due_scheduled (the single-pearl get path keeps load_pearl_with_labels). Measured on the real 1200-pearl store: `th pearls ready` 5.7s -> 0.7s warm. Regression test asserts per-pearl labels with no cross-contamination. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_015ZctFb4oiWoJraHN2db1nX
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Problem
th primeruns on every SessionStart and callsth pearls ready— 5.7s against a 1200-pearl store. Root cause:ready/list/blocked/search/due_scheduledreturned the matching pearls in one query, then fired one more Dolt query per pearl to load labels (N+1). Each Dolt call cold-boots (~140ms), soth agent list(1 query) is 0.5s whileth pearls list(1+N) is 4.7s on the same DB.Fix
attach_labels(Vec<Pearl>)— a singleSELECT pearl_id, label FROM pearl_labels WHERE pearl_id IN (…), grouped in Rust (order preserved, label-sorted). Wired into all five list-style reads. The single-pearlgetpath keepsload_pearl_with_labels(1 pearl = 1 query, nothing to batch).Measured
th pearls readyagainst the real 1200-pearl store: 5.7s → ~0.7s warm.Tests
list_batch_loads_labels_per_pearl— asserts each pearl gets exactly its own labels (no cross-contamination), unlabelled pearls stay empty, label order preserved. Fullsmooth-pearlssuite green.🤖 Generated with Claude Code