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perf(#315): memoize subrepo detection within loadConfig (3 scans → 1) (#398)

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loadConfig called detectSubRepos(cwd) at up to 3 sites per invocation (root-config
requiresFilesystem migration, workstream-config requiresFilesystem migration, and the
planning.sub_repos filesystem re-sync) — all with the same cwd, yielding identical
results. Introduce a per-call lazy memo (getDetectedSubRepos) so the directory scan
runs at most once per loadConfig call while preserving all conditional logic. Fixes #315.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Tom Boucher
2026-05-27 20:21:50 -04:00
committed by GitHub
parent 4361d83279
commit a393e28b34
3 changed files with 137 additions and 3 deletions
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type: Fixed
pr: 315
---
`loadConfig` now memoizes `detectSubRepos(cwd)` per call, collapsing up to 3 redundant directory scans into 1 when migrations and filesystem re-sync both trigger.