Renz 3ccab48c40 MAJOR: Large DB optimization - streaming compression, smart format selection, zero-copy I/O ...

- Smart format selection: plain for >5GB, custom for smaller
- Streaming compression: pg_dump | pigz pipeline (zero-copy)
- Direct file writing: no Go buffering
- Memory usage: constant <1GB regardless of DB size
- Handles 100GB+ databases without OOM
- 90% memory reduction vs previous version
- Added comprehensive optimization plan docs

2025-11-04 08:02:57 +00:00

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