ReadViewSDK/.planning/phases/03-page-metadata-pagination/03-03-SUMMARY.md

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# 03-03 Summary
## Outcome
Wave 3 exposed real-book pagination diagnostics and confirmed that offset-compatible highlight/search presentation stayed intact.
- Added builder-level `RDEPUBTextChapterPaginationDiagnostic`
- `RDEPUBTextBookBuilder` now records `lastBuildPaginationDiagnostics`
- `ReadViewDemo/ViewController.swift` reports pagination evidence from sample EPUBs in UI/runtime logs
- `RDEPUBTextContentView.swift` still computes highlight/search overlap from absolute `pageStartOffset` / `pageEndOffset`, now via an explicit helper
## Demo Evidence
Runtime log from the simulator:
- `EPUB 资源验证2/2 通过`
- `分页诊断:宝山辽墓材料与释读 · 章节 10 · attachment 页 54 · semantic break 页 57 · reasons [attachmentBoundary:31, blockBoundary:26, frameLimit:17, chapterEnd:4] · page break: blockBoundary`
This confirms the stronger paginator is active on real EPUB content and not silently falling back to pure visible-range slicing.