⚡ Bolt: Cache static /api/blog.json fetches in BlogApp

[schmug]

💡 What: Implemented a lightweight module-level cache (fetchPromise and cachedPayload) in BlogApp.tsx for fetching the static /api/blog.json data.
🎯 Why: To prevent expensive and redundant network requests when a user repeatedly opens, closes, and re-opens the windowed blog application, which triggers continuous useEffect mount cycles.
📊 Impact: Reduces network requests for /api/blog.json from 1 per component mount to 1 per application lifecycle, saving bandwidth and immediately resolving cached data on subsequent window openings.
🔬 Measurement: Open the devtools network tab, open the Blog application, close it, and reopen it. Only one request will be issued for the blog JSON payload.

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PR created automatically by Jules for task 9324085411807523793 started by @schmug

[google-labs-jules]

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[schmug]

Superseded by #127 (merged to main), which consolidated the best of the duplicate Bolt/Sentinel/Palette scheduled-agent PRs into one reviewed change. Closing as duplicate.

[google-labs-jules]

Superseded by #127 (merged to main), which consolidated the best of the duplicate Bolt/Sentinel/Palette scheduled-agent PRs into one reviewed change. Closing as duplicate.

Understood. Acknowledging that this work is now obsolete as it has been superseded by #127. I am stopping work on this task.