Export template source from 122c862dccc4a1825f19cc8d4eb1095e5661f1ea:examples/local-first/packages/language-reader-presentation

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+# Renderer provenance
+
+This renderer follows the measured source-span layout and aligned overhead
+annotations from Fluxtapose's `reading-chapter-ui`, including its later highlight
+and underline work. The recovered source was the Nix-cached package at
+`/nix/store/2ka0jcdpyijmpjsrwqkap682l4xk88zi-source`, rather than the earlier
+prose-probe prototype. Fluxtapose's `reading-app-2` references package revision
+`4e479c1a74c13d7467071da60b98fc148128dd99`; exact cache revision is unconfirmed.
+
+Recovered file SHA-256:
+
+| File               | SHA-256                                                          |
+| ------------------ | ---------------------------------------------------------------- |
+| text-layout.ts     | e6c330f60b7f1c16235454d1ce9c7656ef2379e744322ac13826753831e13d72 |
+| text-rendering.ts  | ce2ea4f15f4d3b86d4b8f72d6ac7221cb131c996d19ec24052d80e3235012f77 |
+| text-processing.ts | 7d8a72aa2d8791ad37351d1c7c872419b288b5e0e51214983a29ff48c8465038 |
+
+The original shared source/annotation flow is preserved: every annotation source
+has one row per physical text line. Long words and translations request horizontal
+padding around their source ranges and continue across subsequent lines. A forward
+capacity constraint replaces the ten-pass spacing loop; collisions never create
+additional annotation rows. Conflicting ranges from the same source share an
+ordered horizontal run. Row heights use all glyphs/ranges, and mixed font sizes
+share a baseline. Text keeps original
+UTF-16 offsets, including leading spaces and grapheme clusters. Measurement is
+injected for tests and uses a bounded cache in browsers. Canvas drawing and
+selection have no Konva or memoizee dependency.
+
+Legal wrap positions use the pinned `@cto.af/linebreak` 4.0.3 implementation of
+Unicode 17 UAX #14, intersected with Intl grapheme boundaries. Intl word
+segmentation remains responsible for word targeting and preferred word affinity.
+Source text and overhead labels use the same line-breaking layer. Closing marks
+stay with preceding text, opening brackets stay with following text, and
+annotation padding cannot insert a break inside those punctuation spans. Oversized
+words and numbers use emergency tailoring of the alphabetic/numeric rules while
+retaining punctuation rules; viewports narrower than an inseparable span still
+require clipping. The package's Yarn lock and generated Nix dependency closure
+retain the library and its transitive dependencies for reproducible browser builds.