Nomad changes

.ai-rulez/domains/document-extraction/rules/cache-and-performance.md

@@ -0,0 +1,10 @@
+---
+priority: high
+---
+
+- Cache keys: content-hash based (hash of file bytes + config), not path-based
+- Invalidate cache when extraction config changes (output format, OCR settings, etc.)
+- Check cache before any extraction — cache hits should skip all processing
+- Concurrent batch processing: use configurable worker pool, default to CPU count
+- Stream large files instead of loading into memory — use AsyncRead where possible
+- Monitor cache hit rates — target >80% for repeated extractions