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После T1 code-quality review: 2 Important issues из spec §9 mitigation list. (1) try/catch обернул read/write localStorage — в Edge InPrivate / quota-exceeded не падает, fallback на default 300. (2) network.redraw() rAF-throttled через redrawScheduled flag — устраняет potential jank при fast drag на медленном hardware (mousemove может fire'ить >60Hz). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>