⚡ Bolt: [Cache Manifest Optimization]

[himattm]

💡 What: Introduced an in-memory Set (manifestCache) that lazily loads the manifest string from localStorage once and is updated synchronously for put, evict, and clear operations.
🎯 Why: LocalStorageThemeCache previously deserialized the entire list of cached theme keys from browser localStorage on every operation. For example, readManifest() was called multiple times which involved window.localStorage.getItem and json.decodeFromString every time it's invoked. This is a significant bottleneck on the WebAssembly (wasmJs) target.
📊 Impact: Expected to significantly reduce I/O overhead from localStorage and eliminate excessive JSON parsing, making subsequent cache accesses instantaneous (O(1)).
🔬 Measurement: Verify by executing cache mutations and ensuring localStorage.getItem or JSON decodes are only run on the first cache access.

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PR created automatically by Jules for task 8106597515145361714 started by @himattm

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[himattm]

Closing as superseded by #35, which is the latest cleaned LocalStorageThemeCache manifest-cache optimization merged to main. Keeping one canonical implementation avoids merging multiple generated variants of the same change.

[google-labs-jules]

Closing as superseded by #35, which is the latest cleaned LocalStorageThemeCache manifest-cache optimization merged to main. Keeping one canonical implementation avoids merging multiple generated variants of the same change.

Understood. Acknowledging that this work is now superseded by #35 and stopping work on this PR.