Issue 15 runner efficiency

[evermake]

Implement an efficient Runner using Effect to fetch updates in batches and process them concurrently, addressing issue #15.

The previous makeSimple runner fetched and processed updates one by one, which is inefficient for high-throughput bots. This PR introduces a new make function that fetches updates in batches of up to 100 (Telegram's limit) and processes them concurrently using Effect streams, significantly improving performance. The makeSimple function is now a wrapper around make with concurrency: 1 to maintain its original sequential processing guarantee while still benefiting from batched fetching.

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[cursor]

Cursor Agent can help with this pull request. Just @cursor in comments and I'll start working on changes in this branch.
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