⚡ Bolt: Prevent N+1 query bottleneck fetching thread context

[schmug]

💡 What: Replaced mapping over stub.getEmails() and repeatedly calling stub.getEmail() with a single getFullThread() call.
🎯 Why: Resolves an N+1 query performance bottleneck when fetching thread context for AI agent prompts in workers/agent/index.ts.
📊 Impact: Reduces roundtrips to the Durable Object from N+1 to 1 per thread fetch, improving performance scaling.
🔬 Measurement: Verified by running npm run test and npm run typecheck, verifying functional correctness and tests passing.

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PR created automatically by Jules for task 11806872072739408100 started by @schmug

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[schmug]

Closing as superseded by #658.

This is one of 7 re-derivations of the same agent thread-fetch change, opened by a Jules persona that has since been paused. #658 is the one kept open: it collapses the fetch to a single Durable Object call and removes the now-unused EmailMetadata import. Every variant edits .jules/bolt.md, so only one can land without conflict.

[google-labs-jules]

Closing as superseded by #658.

This is one of 7 re-derivations of the same agent thread-fetch change, opened by a Jules persona that has since been paused. #658 is the one kept open: it collapses the fetch to a single Durable Object call and removes the now-unused EmailMetadata import. Every variant edits .jules/bolt.md, so only one can land without conflict.

Understood. Acknowledging that this work is now obsolete and stopping work on this task.