fix: Show empty days in Work Log weekly view

[okaryo]

Summary

• Show the latest 7 local calendar days in the Work Log section
• Display No log for days without entries
• Add tests for recent Work Log day grouping

Checks

• pnpm run format:check
• pnpm run lint
• pnpm run check
• pnpm test
• pnpm run build

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Keep keyboard selection within visible recent logs

Because the rendered list is now derived from the moving seven-day window while workLogs itself is never pruned or reloaded as relativeTimeNowMs advances, leaving the app open across midnight can drop the previously selected oldest-day log from these groups while selectedWorkLogId still points at it. In that state the UI shows no selected row, and keyboard edit/navigation can continue to target an invisible log from outside the displayed week; the selection should be reconciled against the visible groups/logs when this derived window changes.

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