Repeated reads of unchanged PDFs, Office documents, and EPUBs re-ran the
full markit conversion every time. Add a transparent, content-addressed
cache for successful conversions keyed by SHA-256(content) + normalized
extension, so repeat reads reuse converted markdown instead of
reconverting.
- packages/utils: XDG-aware getDocumentConversionCacheDir() helper
- coding-agent: markit-cache module (bounded 256 MiB, oldest-first prune,
best-effort writes that never fail conversion) layered over the central
convertFileWithMarkit/convertBufferWithMarkit wrappers
- imageDir conversions stay uncached (cache:"skipped") to preserve PDF
image extraction side effects; failed/empty/aborted conversions are
never cached
- abort-safe: file byte reads run under untilAborted; cache I/O rechecks
the signal
Wolfgang Schoenberger
2cb892ef1f