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⚡ Bolt: Optimize array allocations in dashboard rendering#264

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bolt-optimize-dashboard-rendering-14993605321287929890
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⚡ Bolt: Optimize array allocations in dashboard rendering#264
schmug wants to merge 1 commit into
mainfrom
bolt-optimize-dashboard-rendering-14993605321287929890

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@schmug schmug commented May 12, 2026

💡 What: Replaced chained .map().join("") calls with single-pass loops (for...of and for) and string concatenation (+=) in renderDomainPanel and renderDriftTable inside src/views/dashboard.ts.
🎯 Why: In hot rendering paths, chained array operations allocate intermediate arrays that are immediately discarded. This increases Garbage Collection (GC) pressure and negatively impacts rendering performance, particularly for lists with many domains or history entries.
📊 Impact: Reduces memory allocations per render cycle by avoiding temporary array creations, which incrementally speeds up HTML generation and lightens GC overhead for the dashboard views.
🔬 Measurement: Verify via profiling memory allocations during repeated /dashboard page renders, or simply by observing pnpm test and pnpm lint passing correctly (which confirms functionality is identical).


PR created automatically by Jules for task 14993605321287929890 started by @schmug

Replaced chained `.map().join("")` calls with single-pass loops
(`for...of` and `for`) and string concatenation in `renderDomainPanel`
and `renderDriftTable` within `src/views/dashboard.ts`. This reduces
intermediate array allocations and lessens Garbage Collection (GC)
pressure on the rendering hot path.

Co-authored-by: schmug <38227427+schmug@users.noreply.github.com>
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