refactor(input): extract EditPipeline from input views (iOS & Android)#589
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Move the per-keystroke text-change processing sequence (store adjustment, orphan pruning, block continuation, pending styles, formatting, and detection) into a dedicated EditPipeline class on each platform. The views now build an immutable EditContext and delegate to the pipeline, keeping only UI-specific post-processing (formatting on iOS, scroll/cursor sync, event emission on Android stays in the pipeline). Pure structural extraction — no behavioral changes. Co-authored-by: Cursor <cursoragent@cursor.com>
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What/Why?
Move the per-keystroke text-change processing sequence (store adjustment, orphan pruning, block continuation, pending styles, formatting, and detection) into a dedicated EditPipeline class on each platform. The views now build an immutable EditContext and delegate to the pipeline, keeping only UI-specific post-processing (formatting on iOS, scroll/cursor sync, event emission on Android stays in the pipeline).
Pure structural extraction - no behavioral changes.
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