humanspeak / svelte-diff / 37069552858

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feat: add syntax-highlighted code diffs for Svelte (#219)

* docs: prepare code diff plans against merged improvements

* test: capture literal source fidelity regression

* docs: record literal source regression baseline

* feat: add literal source diff computation

* test: preserve template quantifier in diff mode fixture

* docs: verify literal diff plan and prepare highlight integration

* docs: resume highlight plan after connection recovery

* build: add optional tanstack highlight dependency

* docs: record verified highlight dependency bootstrap

* docs: use distinct code diff test filenames on macos

* feat: add highlighted code diffs

* fix: align code diff navigation tests and type examples

* test: select code diff controls by accessible role

* fix: support code diff keyboard scrolling in safari

* test: isolate known docs analytics csp diagnostic

* docs: refine highlighted diff playground requirements

* feat: make code diff examples interactive playgrounds

* docs: record highlighted code diff verification

* docs: close completed code diff plans

* fix: use line mode in code diff examples

* docs: record line mode example verification

* fix: persist async refactor example defaults

* fix: disable code editor form restoration

* refactor: simplify diff caching and skip template scan for plain text

- Replace CodeDiff's hand-rolled caches with one memoizeLast helper,
  dropping the JSON.stringify key that copied both sources per rerender
- Return early from findNamedGroups when the text has no `(?<`
- Drop the redundant expectedPatterns field from SvelteDiff's cache key
- Hoist the per-segment newline check into a template const
- Tidy computeDiff types, imports, and cleanup timing
- Reuse RendererClasses in CodeDiffProps; document composeCodeDiff

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

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Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

240 of 270 branches covered (88.89%)

Branch coverage included in aggregate %.

109 of 119 new or added lines in 5 files covered. (91.6%)

396 of 406 relevant lines covered (97.54%)

11034.32 hits per line