Nick Shirokov 0e680d151d Remove unused styles, add empty row compression to DSL ...

- Decompiler: remove styles not referenced by any cell or rowStyle
- Decompiler: compress consecutive empty rows into {"empty": N}
- Compiler: support {"empty": N} row placeholder
- DSL spec: document empty field on rows

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-08 20:09:13 +03:00

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Remove unused styles, add empty row compression to DSL

2026-02-08 20:09:13 +03:00