refactor(web): remove redundant double parse of diff route search params

[binbandit]

Summary

rawSearch in ChatView is produced by useSearch with a select transform that runs parseDiffRouteSearch. A subsequent useMemo re-parsed the already-parsed result through the same function using an unsafe as Record<string, unknown> cast, producing an identical DiffRouteSearch object.

This removes the redundant useMemo + re-parse and reads rawSearch.diff directly, since rawSearch is already typed as DiffRouteSearch.

Change

• Removed the diffSearch useMemo that called parseDiffRouteSearch(rawSearch as Record<string, unknown>)
• Replaced diffSearch.diff === "1" with rawSearch.diff === "1"
• Net: -5 lines, eliminates an unnecessary re-parse and an unsafe type cast

Verification

• bun lint — passes (only pre-existing warnings)
• bun typecheck — passes across all 7 packages
• bun run test — passes (pre-existing terminalStateStore.test.ts failures unrelated)

Note

Remove redundant double parse of diff route search params by deriving ChatView diff state directly from rawSearch.diff in ChatView.tsx

Remove useMemo for diffSearch and compute diffOpen directly from rawSearch.diff in ChatView.tsx.

📍Where to Start

Start with the ChatView component changes in ChatView.tsx.

^{Macroscope summarized a7a2fae.}

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